User's Manual for XTC Transmitters, Series 340 Pressure Transmitter-Controllers (UM340-1, Rev. 5; April 2000) - PDF 1.9MB

USER'S MANUAL
UM340-1
Rev: 5
April 2000
H
XTCTM Transmitters
Series 340 Pressure Transmitter-Controllers
UM340-1
CONTENTS
TABLE OF CONTENTS
SECTION AND TITLE
PAGE
1.0 INTRODUCTION .......................................................................................................................1-1
1.1 SECTION CONTENTS .............................................................................................................1-1
1.2 PRODUCT DESCRIPTION ......................................................................................................1-2
1.3 CONFIGURATION...................................................................................................................1-8
1.4 PRODUCT SUPPORT ..............................................................................................................1-8
2.0 MODEL 275 UNIVERSAL HART COMMUNICATOR...........................................................2-1
2.1 INTRODUCTION .....................................................................................................................2-1
2.2 COMMUNICATOR CONNECTIONS ......................................................................................2-1
2.3 CONTROLS OVERVIEW.........................................................................................................2-4
2.3.1 Liquid Crystal Display .......................................................................................................2-4
2.3.2 Software-Defined Function Keys........................................................................................2-4
2.3.3 Action Keys .......................................................................................................................2-6
2.3.4 Alphanumeric and Shift Keys.............................................................................................2-7
2.3.4.1 Rapid Selection of Menu Options ...............................................................................2-7
2.3.4.2 Data Entry..................................................................................................................2-7
2.4 GETTING TO KNOW THE COMMUNICATOR .....................................................................2-8
2.4.1 Display Icons .....................................................................................................................2-8
2.4.2 Menu Structure ..................................................................................................................2-8
2.4.3 Reviewing Installed Devices ..............................................................................................2-9
2.5 MAIN MENU..........................................................................................................................2-10
2.5.1 Offline Menu ...................................................................................................................2-11
2.5.1.1 New Configuration...................................................................................................2-11
2.5.1.2 Saved Configuration.................................................................................................2-14
2.5.2 Online Menu ....................................................................................................................2-16
2.5.3 Frequency Device Menu...................................................................................................2-19
2.5.4 Utility Menu ....................................................................................................................2-19
2.5.4.1 Configure Communicator .........................................................................................2-19
2.5.4.2 System Information ..................................................................................................2-20
2.5.4.3 Listen for PC............................................................................................................2-20
2.5.4.4 Storage Location ......................................................................................................2-20
2.5.4.5 Simulation................................................................................................................2-20
2.6 USING THE QUICK ACCESS KEY.......................................................................................2-21
2.6.1 Adding Quick Access Key Options ..................................................................................2-22
2.6.2 Deleting Quick Access Key Options.................................................................................2-23
3.0 COMMISSIONING AND BENCH TESTING ...........................................................................3-1
3.1 COMMISSIONING PROCEDURE ...........................................................................................3-1
3.1.1 Test Equipment Needed .....................................................................................................3-2
3.2 ESTABLISHING COMMUNICATION ....................................................................................3-3
3.3 TESTING THE TRANSMITTER ..............................................................................................3-3
3.4 REVIEWING CONFIGURATION DATA.................................................................................3-3
3.5 CHECKING TRANSMITTER OUTPUT...................................................................................3-4
4. 0 INSTALLATION........................................................................................................................4-1
4.1 EQUIPMENT DELIVERY AND HANDLING..........................................................................4-2
4.1.1 Factory Shipment ...............................................................................................................4-1
4.1.2 Receipt of Shipment...........................................................................................................4-1
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4.1.3 Storage...............................................................................................................................4-1
4.2 ENVIRONMENTAL CONSIDERATIONS...............................................................................4-1
4.3 INSTALLATION CONSIDERATIONS ....................................................................................4-2
4.3.1 Mechanical ........................................................................................................................4-2
4.3.2 Electrical............................................................................................................................4-3
4.3.3 Impulse Piping for Models 340D, A, and G ........................................................................4-4
4.3.4 Transmitter Operating Mode and Network Type...............................................................4-10
4.3.4.1 Analog Mode ...........................................................................................................4-10
4.3.4.2 Digital Mode ............................................................................................................4-14
4.3.5 Power Supply Requirements.............................................................................................4-14
4.3.5.1 Point-to-Point Network ............................................................................................4-16
4.3.5.2 Multi-Drop Network ................................................................................................4-16
4.3.6 Cable Capacitance and Maximum Length.........................................................................4-17
4.3.6.1 Cable Capacitance....................................................................................................4-17
4.3.6.2 Maximum Cable Length Calculation ........................................................................4-17
4.3.7 Network Junctions............................................................................................................4-18
4.3.8 Safety Barriers .................................................................................................................4-19
4.3.9 Connection of Miscellaneous Hardware............................................................................4-19
4.3.10 Shielding and Grounding................................................................................................4-20
4.4 MECHANICAL INSTALLATION, MODELS 340D, A, AND G ............................................4-21
4.4.1 Pipe Mounting, Models 340D, A, and G...........................................................................4-21
4.4.2 Flat Surface Mounting, Models 340D, A, and G ...............................................................4-25
4.4.3 Direct Mounting to Process, Model 340D.........................................................................4-28
4.5 MECHANICAL INSTALLATION, MODEL 340F .................................................................4-29
4.6 MECHANICAL INSTALLATION, ALL MODELS................................................................4-32
4.6.1 Smart Display Installation, Repositioning, and Removal...................................................4-32
4.6.2 Electrical Conduit and Cable Installation ..........................................................................4-34
4.6.2.1 Conduit ....................................................................................................................4-34
4.6.2.2 Cables ......................................................................................................................4-35
4.6.2.3 Access to Transmitter Terminal Compartment ..........................................................4-35
4.7 ELECTRICAL INSTALLATION ............................................................................................4-36
4.7.1 Loop Wiring ....................................................................................................................4-36
4.7.2 Transient Suppressor Option ............................................................................................4-37
4.8 HAZARDOUS AREA INSTALLATION ................................................................................4-37
5.0 POST-INSTALLATION CHECKOUT ......................................................................................5-1
5.1 EQUIPMENT REQUIRED........................................................................................................5-1
5.2 INSTALLATION REVIEW.......................................................................................................5-1
5.3 EQUIPMENT CONNECTION ..................................................................................................5-2
5.4 VERIFICATION .......................................................................................................................5-2
5.4.1 Communication Test ..........................................................................................................5-2
5.4.2 Communications Error Check ............................................................................................5-3
5.4.3 Verify Analog Output Signal..............................................................................................5-3
6. 0 ON-LINE CONFIGURATION AND OPERATION .................................................................6-1
6.1 REMOTE CONFIGURATION AND OPERATION ..................................................................6-1
6.1.1 Configuration.....................................................................................................................6-1
6.1.1.1 Sensor Input Block .....................................................................................................6-2
6.1.1.2 Totalizer Block...........................................................................................................6-4
6.1.1.3 Characterizer..............................................................................................................6-5
6.1.1.4 Operator Display Block ..............................................................................................6-5
6.1.1.5 Transmitter ID............................................................................................................6-7
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6.1.1.6 Output Block..............................................................................................................6-7
6.1.1.7 Alarm Block...............................................................................................................6-8
6.1.1.8 SP Track & Hold Block..............................................................................................6-9
6.1.1.9 A/M Transfer .............................................................................................................6-9
6.1.1.10 Controller...............................................................................................................6-10
6.1.2 SEND and SAVE a Configuration....................................................................................6-11
6.1.3 Quick Access Key Functions............................................................................................6-12
6.1.3.1 XMTR Variables......................................................................................................6-12
6.1.3.2 Status.......................................................................................................................6-13
6.1.3.3 Totalizer Control ......................................................................................................6-14
6.1.3.4 PID Control..............................................................................................................6-14
6.1.3.5 Range Xmtr..............................................................................................................6-15
6.2 LOCAL TRANSMITTER OPERATION .................................................................................6-16
6.2.1 Smart Display Functionality .............................................................................................6-16
6.2.2 Toggling the Display Manually ........................................................................................6-17
6.3 LOCAL TRANSMITTER CONFIGURATION (CONTROLLER OFF)...................................6-18
6.3.1 Set Local Zero..................................................................................................................6-18
6.3.2 Set Local Fullscale ...........................................................................................................6-18
6.3.3 Adjust Local Damping .....................................................................................................6-19
6.4 LOCAL TRANSMITTER-CONTROLLER CONFIGURATION (CONTROLLER ON)..........6-20
6.4.1 Local A/M, Setpoint, and Valve Adjustments ...................................................................6-20
6.5 DISABLING THE MAGNETIC SWITCHES..........................................................................6-22
7. 0 CALIBRATION AND MAINTENANCE ..................................................................................7-1
7.1 CALIBRATION ........................................................................................................................7-1
7.1.1 Equipment Required...........................................................................................................7-1
7.1.2 Zero Trim ..........................................................................................................................7-3
7.1.2.1 Removing Zero Shift ..................................................................................................7-4
7.1.3 On-Line Zero Adjust ..........................................................................................................7-5
7.1.4 Calibrate Digital-to-Analog Converter (DAC) ....................................................................7-5
7.2 PREVENTIVE MAINTENANCE..............................................................................................7-7
7.2.1 Tool and Equipment Requirements.....................................................................................7-7
7.2.2 Transmitter Exterior Inspection ..........................................................................................7-7
7.2.3 Transmitter Exterior Cleaning ............................................................................................7-8
7.2.4 Transmitter Enclosure Interior Inspection ...........................................................................7-8
7.2.5 Transmitter Calibration ......................................................................................................7-8
7.2.6 Impulse Piping ...................................................................................................................7-8
7.3 TROUBLESHOOTING .............................................................................................................7-9
7.3.1 Analog Output ...................................................................................................................7-9
7.3.2 Digital Output (Communication) ......................................................................................7-10
7.3.3 Diagnosing a Defective Transmitter .................................................................................7-10
7.3.3.1 Additional Troubleshooting for Electronics Module Failure......................................7-11
7.3.3.2 Additional Troubleshooting for a Sensor Assembly ..................................................7-12
7.4 ASSEMBLY REMOVAL AND REPLACEMENT..................................................................7-12
7.4.1 Replacing the Electronics Module ....................................................................................7-13
7.4.2 Sensor Assembly Removal and Replacement....................................................................7-13
7.4.3 Terminal Board Assembly Removal and Replacement......................................................7-15
7.5 NON-FIELD-REPLACEABLE ITEMS ...................................................................................7-15
7.6 TRANSMITTER REPLACEMENT.........................................................................................7-16
7.7 MAINTENANCE RECORDS .................................................................................................7-16
7.8 RECOMMENDED SPARE AND REPLACEMENT PARTS ..................................................7-17
7.9 SOFTWARE COMPATIBILITY.............................................................................................7-17
7.10 RETURN SHIPMENT...........................................................................................................7-18
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8.0 CIRCUIT DESCRIPTION ..........................................................................................................8-1
8.1 SENSOR ASSEMBLY ..............................................................................................................8-1
8.2 ELECTRONICS MODULE.......................................................................................................8-1
8.3 THEORY OF OPERATION ......................................................................................................8-3
8.3.1 Pressure to Frequency Conversion......................................................................................8-3
8.3.2 Frequency to Digital Conversion ........................................................................................8-3
8.3.3 D/A Conversion and Current Signal Transmission..............................................................8-4
8.3.4 Communication Format......................................................................................................8-4
8.4 TRANSIENT SUPPRESSOR OPTION .....................................................................................8-4
9.0 MODEL DESIGNATIONS AND SPECIFICATIONS...............................................................9-1
9.1 MODEL DESIGNATIONS .......................................................................................................9-1
9.2 ACCESSORIES.........................................................................................................................9-8
9.3 SPECIFICATIONS....................................................................................................................9-8
9.3.1 Mechanical ........................................................................................................................9-8
9.3.2 Performance and Functional Specifications ......................................................................9-12
9.3.3 Two-Wire Cable...............................................................................................................9-15
9.3.4 Environmental..................................................................................................................9-15
9.3.5 Hazardous Area Classification..........................................................................................9-17
9.3.5.1 CSA Hazardous Locations Precautions.....................................................................9-18
9.3.6 Special Conditions For Safe Use ......................................................................................9-18
A.0 APPENDIX A - FUNCTION BLOCKS ....................................................................................A-1
A.1
WRITE PROTECT BLOCK ............................................................................................. A-2
A.2
SENSOR INPUT BLOCK ................................................................................................ A-2
A.3
CHARACTERIZER ......................................................................................................... A-4
A.4
TOTALIZER BLOCK ...................................................................................................... A-4
A.5
OPERATOR DISPLAY BLOCK ...................................................................................... A-5
A.6
TRANSMITTER ID BLOCK ........................................................................................... A-8
A.7
ALARM BLOCK ............................................................................................................. A-9
A.8
SETPOINT TRACK AND HOLD BLOCK .................................................................... A-10
A.9
CONTROLLER BLOCK................................................................................................ A-10
A.10
A/M TRANSFER BLOCK ............................................................................................. A-12
A.11
OUTPUT BLOCK .......................................................................................................... A-13
B.0 APPENDIX B - HAZARDOUS AREA INSTALLATION........................................................ B-1
C.0 TRANSMITTER CONFIGURATION DOCUMENTATION .................................................C-1
D.0 APPENDIX D - ELEVATION AND SUPPRESSION CORRECTIONS.................................D-1
D.1
HOW ADJUSTMENT IS MADE .....................................................................................D-1
D.2
ELEVATION CALCULATION EXAMPLE ....................................................................D-2
D.3
SUPPRESSION CALCULATION EXAMPLE .................................................................D-2
D.4
RECOMMENDED METHOD FOR 340 TRANSMITTERS.............................................D-3
E.0 APPENDIX E - CENELEC EEX D INSTALLATIONS........................................................... E-1
F.0 APPENDIX F - STATIC PRESSURE CORRECTION ............................................................ F-1
W.0 APPENDIX W - WARRANTY................................................................................................W-1
PARTS LIST
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LIST OF ILLUSTRATIONS
FIGURE AND TITLE
PAGE
1-1
1-2
1-3
1-4
1-5
1-6
1-7
Model 340D Transmitter................................................................................................................1-3
Models 340A and 340G .................................................................................................................1-4
Model 340F Differential Transmitter with Flange ..........................................................................1-5
Traditional Process Variable Measurement ....................................................................................1-6
Model 340 in Transmitter-Controller Role .....................................................................................1-6
Optional Smart Display..................................................................................................................1-7
Terminal Board..............................................................................................................................1-7
2-1
2-2
2-3
2-4
2-5
2-6
Model 275 Universal HART Communicator ..................................................................................2-2
HART Communicator Connections to a Transmitter Loop .............................................................2-3
Communicator Display Icons.........................................................................................................2-8
Offline Menu Tree .......................................................................................................................2-11
Online Menu Tree for Model 340 Transmitter..............................................................................2-17
Generic Online Menu Tree...........................................................................................................2-18
3-1 Bench Test Connections.................................................................................................................3-1
3-2 Field Test Connections ..................................................................................................................3-2
4-1 Differential Flow Measurement Piping for Gas or Liquid ...............................................................4-5
4-2 Differential Liquid Measurement Piping ........................................................................................4-6
4-3 Absolute or Gauge Pressure Measurement Piping ..........................................................................4-7
4-4 Steam Service, Below the Line Mounting ......................................................................................4-8
4-5 Open and Closed Tank Level Measurement, Flange Mounted Differential Transmitters .................4-9
4-6 Point-To-Point Network (Analog Mode) ......................................................................................4-11
4-7 Model 353/354 to Model 340 Connections (Analog Mode) ..........................................................4-12
4-8 Wiring for Controller Operation...................................................................................................4-13
4-9 Multi-Drop Network (Digital Mode) ............................................................................................4-15
4-10 2" Pipe Mount Bracket, Model 340D .........................................................................................4-23
4-11 2" Pipe Mount Bracket, Models 340A and G..............................................................................4-24
4-12 Universal Mounting Bracket, Model 340D.................................................................................4-26
4-13 Universal Mounting Bracket, Models 340A and G .....................................................................4-27
4-14 Flange Mounted Transmitter, Model 340F .................................................................................4-30
4-15 Smart Display Removal and Repositioning ................................................................................4-33
4-16 Conduit Drain and Explosion Proof Installations ........................................................................4-35
4-17 Conductor Terminations.............................................................................................................4-37
5-1 Equipment Connection for System Checkout .................................................................................5-2
7-1 Bench Test Connections.................................................................................................................7-2
7-2 Field Test Connections ..................................................................................................................7-2
8-1 Block Diagram, Electronics Module and Sensor Assembly ............................................................8-2
9-1 Dimensions, Model 340D Transmitter .........................................................................................9-10
9-2 Dimensions, Models 340A and G.................................................................................................9-11
A-1 Function Block Arrangement in Model 340 Transmitters ............................................................. A-1
Control Drawing for Model 340 Transmitter ........................................................................................ B-2
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CONTENTS
D-1
D-2
D-3
D-4
UM340-1
Elevated Span Example ...............................................................................................................D-1
Suppressed Span Example ...........................................................................................................D-1
Elevation Calculation Example ....................................................................................................D-2
Suppression Calculation Example ................................................................................................D-2
LIST OF TABLES
TABLE AND TITLE
PAGE
1-1 Model Number vs. Figure References ............................................................................................1-2
2-1 Function Keys with Their Labels and Actions Performed ...............................................................2-5
2-2 Moore Products Co. Device Descriptions.....................................................................................2-10
4-1 Operating Mode and Network......................................................................................................4-10
4-2 Flange and Extension Dimensions................................................................................................4-31
9-1
9-2
9-3
9-4
9-5
9-6
9-7
Model 340D, Model Designation ...................................................................................................9-2
Model 340A, Model Designation ...................................................................................................9-3
Model 340G, Model Designation ...................................................................................................9-4
Model 340F, Model Designation....................................................................................................9-5
Model 340 Sterling High Performance ...........................................................................................9-6
Model 340 with Tantalum Diaphragms ..........................................................................................9-7
Model 340 Accessories ..................................................................................................................9-8
CHANGES FOR REVISION 5, MAY 1998
Significant changes for Revision 5 are listed below and are indicated in text by change bars in the page
margins.
Cover
APACS (Advanced Process Automation and Control System) logo and acronym
removed. Rev 4 changed to Rev 5.
Section 7
Subsection 7.1.2.1 revised to include a statement concerning zero off set correction.
Section 9
Subsection 9.3.2 revised with updated Maximum Working Pressure specifications.
Appendix A
Totalizer information updated.
Parts List
Update to Rev 3 includes new service parts kit information.
CHANGES FOR REVISION 5, APRIL 2000
Sections 1, 4 and 9
Section 9
Illustrations revised to improve PDF.
Subsections 9.3.5 and 9.3.6 revised.
The Moore logo is a registered trademarks of Siemens Moore Process Automation, Inc.
XTC, Smart Display, DDP, and MycroSENSOR are trademarks of Siemens Moore Process Automation, Inc.
All other trademarks are the property of their respective owners.
Siemens Moore Process Automation, Inc. assumes no liability for errors or omissions in this document or for the application and
use of information included in this document. The information herein is subject to change without notice.
Procedures in this document have been reviewed for compliance with applicable approval agency requirements and are
considered sound practice. Neither Siemens Moore Process Automation, Inc. nor these agencies are responsible for repairs
made by the user.
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UM340-1
INTRODUCTION
1.0 INTRODUCTION
This user’s manual is for the APACS XTC Model 340 Series of Smart Pressure Transmitter-Controllers.
NOTE
Throughout this manual the term transmitter includes both transmittercontroller operation and transmitter-only operation. The term transmittercontroller is used when discussing controller-related operations, such as
the Controller function block.
All information needed to bench test, install, configure, calibrate, and service a transmitter is included in
this user’s manual.
IMPORTANT
Save this user’s manual for installing, configuring, operating, and
servicing a Model 340 transmitter.
1.1 SECTION CONTENTS
Ten sections and four appendices make up this manual. A brief description of each section follows.
Section 1, INTRODUCTION, describes each section in this manual and provides a brief description of the
Model 340 Smart Pressure Transmitter-Controller line.
Section 2, MODEL 275 UNIVERSAL HART COMMUNICATOR, describes use of the HART
Communicator to test, configure, and calibrate a transmitter.
Section 3, COMMISSIONING AND BENCH TESTING, provides procedures to perform a bench test of
the transmitter to ensure proper operation of all functions. Start-up configuration is described here. If
desired, go to Section 6 to perform a complete configuration. The calibration procedure in Section 7 can be
performed following configuration if the mounting position will induce a zero shift.
Section 4, INSTALLATION, furnishes specific information for mechanical and electrical installation.
Section 5, POST-INSTALLATION CHECKOUT, describes how to confirm that the transmitter has been
installed correctly.
Section 6, ON-LINE CONFIGURATION AND OPERATION, describes on-line configuration and
operation and local configuration using the magnetic switches.
Section 7, CALIBRATION AND MAINTENANCE, provides calibration procedures for analog and
digital modes and a zeroing procedure for mounting position. It also furnishes preventive maintenance,
troubleshooting, and assembly replacement procedures. A spare and replacement parts list is provided at
the back of this manual.
Section 8, CIRCUIT DESCRIPTION, contains an assembly-level circuit description to support transmitter
servicing.
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INTRODUCTION
UM340-1
Section 9, MODEL DESIGNATIONS AND SPECIFICATIONS, furnishes tables describing transmitter
model numbers, and it contains mechanical, functional, performance, and environmental specifications.
Hazardous area certifications are also listed.
Section 10, GLOSSARY, contains definitions of various transmitter-related terms.
APPENDIX A describes transmitter function blocks and the parameters available.
APPENDIX B contains hazardous area installation drawings and information needed for barrier selection.
APPENDIX C provides configuration documentation for entering application-specific configuration data
for the transmitter.
APPENDIX D explains how to perform elevation and suppression calculations necessary for certain liquid
level gauging applications.
WARRANTY contains the product warranty statements and information concerning servicing of the
product during the warranty period.
PARTS LIST shows exploded views of the four basic models of 340 Series transmitters and a list of onhand spare parts and field-replaceable parts.
1.2 PRODUCT DESCRIPTION
Model 340 transmitters are part of the Moore Products Co. XTC line of smart pressure and temperature
field devices. They provide reliable, accurate, stable, and cost-effective measurement of differential,
absolute, and gauge pressures.
Pressure sensor style influences a Model 340’s physical dimensions and mechanical installation. Note that
a sensor style can involve one or more pressure measurement methods (i.e., differential, absolute, and
gauge), as shown in Table 1-1.
TABLE 1-1 Model Numbers vs. Figure References
MODELS
PRESSURE SENSOR
REFER TO
Model 340D, all
Differential
Figures 1-1, 4-10, 4-12, and 9-1
Model 340A
Absolute, with tantalum diaphragm
Model 340G
Gauge, with tantalum diaphragm
Model 340S
Saturated SteaMeter™
Model 340A
Absolute
Model 340G
Gauge
Model 340F
Differential, flanged level
Figures 1-2, 4-11, 4-13, and 9-2
Figures 1-3 and 4-14
Differential, flanged level, with extension
1-2
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INTRODUCTION
120º
Nameplate
Enclosure
Rotation
Magnetic
Switches:
Zero
Damping
Full Scale
120º
Electronics Module and
Optional Smart Display
Electrical Entrance,
1/2-14 NPT or
M20 X 1.5 Tapped
Hole, 2 Places
Enclosure
Ground
Screw
Loop Terminals
and Isolated Tie
Point
_
+
TIE
End Cap
H
Vent/Drain Plug
Process Connection
Block, 1/2 NPT
Tapped Hole
(See Note 1)
Enclosure Rotation
Set Screw
Process Connection
1/4 NPT
Tapped Hole
Embossed Arrow
Indicates High
Pressure Port
7/16-20 Tapped
Hole, 8 Places
X03024S2
Notes:
Vent/Drain Plug
(Side Vent Options Top, Bottom, or Both)
1. Process Connection Blocks can be rotated 180º to give the following
connection centers: 2.00 (50.1), 2.13 (54.1), or 2.25 (57.2).
Dimensions are in inches (millimeters).
2. Also shows Models 340A and 340G with tantalum diaphragms.
FIGURE 1-1 Model 340D Transmitter (See Note 2)
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INTRODUCTION
UM340-1
120º
Nameplate
Enclosure
Rotation
Magnetic
Switches:
Zero
Damping
Full Scale
120º
Electronics Module and
Optional Smart Display
Enclosure
Ground
Screw
Electrical Entrance,
1/2-14 NPT or
M20 X 1.5 Tapped
Hole, 2 Places
Loop Terminals
and Isolated Tie
Point
_
+
TIE
Capsule
Assembly
Enclosure Rotation
Set Screw
X03025S2
1/2 NPT Process
Inlet Connection
Note:
1. For a Model 340A or G with tantalum diaphragms, see Figure 1-1.
FIGURE 1-2 Model 340A And 340G (See Note 1)
1-4
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INTRODUCTION
120º
Nameplate
Enclosure
Rotation
Magnetic
Switches:
Zero
Damping
Full Scale
120º
Electronics Module and
Optional Smart Display
Enclosure
Ground
Screw
Electronics Module
1/2-14 NPT or
M20 X 1.5 Tapped
Hole, 2 Places
7/16-20
Tapped Hole,
4 Places
Loop Terminals
and Isolated Tie
Point
_
+
TIE
H
Embossed Arrow
Indicates High
Pressure Port
Extension
Process
Connection
1/4 NPT
Tapped Hole,
See Note 1
Vent/Drain Plug
Vent/Drain Plug
(Side Vent Options
Top, Bottom, or Both)
Enclosure Rotation
Set Screw
Note:
1. A Process Connection Block with 1/2 NPT process
connection can be installed.
X03026S2
FIGURE 1-3 Model 340F Differential Transmitter with Flange
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INTRODUCTION
UM340-1
Each transmitter is a microprocessor-based, self-contained pressure-to-current transducer. The heart of the
transmitter is the MycroSENSOR™. Developed and patented by Moore Products Co., the MycroSENSOR
is a silicon, dual-capacitance pressure sensor assembly. It generates a direct digital output signal that is
proportional to input pressure.
The direct digital output in conjunction with the microprocessor provides Direct Digital Processing
(DDP™). DDP provides advanced processing and compensation for varying ambient temperature and
static pressure. This yields improved performance, stability, and reliability compared to conventional
analog transmitters. Although signal processing is digital, a transmitter can be configured to operate in
either an analog mode or a digital mode, for a Point-to-Point or a Multi-Drop network, respectively.
ANALOG MODE: A single transmitter is connected to a controller, recorder, or other field device. A loop
known as a Point-to-Point network interconnects the instruments. Figure 1-4 shows a traditional
application.
Single-Loop
Digital Controller
X03028S0
2 Wire
4-20 mA
2 Wire
4-20 mA
I/P
Model 773
Model 352
H
Model 340D
Configured as a
Transmitter Only
Flow
FIGURE 1-4 Traditional Application
Figure 1-5 shows an application using the Model 340’s built-in controller function, with a Model 385 Loop
Operator’s Station. Here the transmitter-controller’s 4-20 mA output is the valve signal, which is sent
directly to the final control element. The measured variable and other variables are communicated to the
Loop Operator’s Station using the HART protocol.
Optional Loop
Operator's Station
2 Wire
4-20 mA
I/P
Model 773
H
Flow
Model 340D
Configured
as a TransmitterController
Model 385
X03027S0
FIGURE 1-5 Transmitter-Controller Application
1-6
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UM340-1
INTRODUCTION
The HART® (Highway Addressable Remote Transducer) protocol is used for communication between the
transmitter and a HART Communicator, a personal computer running configuration software, or another
remote device. This is done by superimposing the HART digital signal on the analog current.
Communications can transfer a new or edited configuration, remotely monitor the process variable, or
service a transmitter.
DIGITAL MODE: When the Model 340 is used only as a transmitter, 1-15 transmitters can be parallel
connected to a Multi-Drop network using only twisted-pair cable. The HART protocol is employed to send
all process variable information to a HART-compatible controller , recorder, or other device.
A Model 340 can be equipped with an optional Smart Display™ (Figure 1-6) to permit local viewing of
output variables and to make local configuration easier. Connection to the loop is made using a terminal
board with three screw terminals (Figure 1-7), which is located on the opposite end of the transmitter
enclosure from the Smart Display.
Shown with
Enclosure Cap
Removed
PV
TOTAL
PB
%
ENG
SP
V
AM
X03029S2
FIGURE 1-6 Optional Smart Display
HART Communicator Connections
Shown with Enclosure Cap Removed
Loop (+) and (-) Screw Terminals
on Terminal Board or Transient
Suppression Terminal Board
_
+
TIE
Insulating Cover
TIE Terminal - Used as a floating tie
point (splice). It is isolated from the
Transmitter circuitry and the enclosure.
X03030S2
FIGURE 1-7 Terminal Board
All Model 340 transmitters have an intrinsically safe, explosion proof, NEMA 4x (IP67/68), field
mountable, hardened enclosure. Electrical conduit connections are ½ NPT or M20. All process wetted
materials are 316 stainless steel or better. The flush-mount process connection of the Model 340F is
compatible with standard ANSI and metric flange sizes for tanks and pipes.
May 1998
1-7
INTRODUCTION
UM340-1
1.3 CONFIGURATION
A Model 340 transmitter must be configured before use. Each transmitter is shipped with either a default
configuration or, if specified at time of order, a custom configuration defined by the user. The user may
need to edit the default configuration before the transmitter is used in a loop.
1.4 PRODUCT SUPPORT
Product support can be obtained from the Moore Products Co. Technical
Information Center (TIC). TIC is a customer service center that provides
direct phone support on technical issues related to the functionality,
application, and integration of all products supplied by Moore Products Co.
To contact TIC for support, either call 215-646-7400, extension 4TIC
(4842). The following information should be at hand when contacting TIC for
support:
•
Caller ID number, or name and company name
•
When calling for support for the first time, a “personal caller number” is assigned. This number is
mailed in the form of a caller card. Having the number available when calling for support will allow the
TIC representative taking the call to use the central customer database to quickly identify the caller’s
location and past support needs.
•
Product part number or model number and version
•
If there is a problem with the product’s operation:
•
Is the problem intermittent or constant?
•
What steps were performed before the problem occurred?
•
What steps have been performed since the problem occurred?
•
What symptoms accompany the problem? Is an error message displayed?
•
What is the installation environment: temperature range, humidity, vibration, etc?
■
1-8
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
2.0 MODEL 275 UNIVERSAL HART COMMUNICATOR
The Model 275 Universal HART Communicator is a handheld interface that provides a common
communication link to XTC 340 Series transmitters and other HART-compatible instruments.
This section describes HART Communicator connections, liquid crystal display, keypad, and on-line and
off-line menus. It also provides short overviews of some of the Communicator’s functions. The
Communicator is shown in Figure 2-1. For information about the Communicator’s battery pack, Memory
Module, Data Pack, and maintenance procedures, refer to the manual supplied with the Communicator.
2.1 INTRODUCTION
From a wiring termination point, the HART Communicator interfaces with a Model 340 transmitter or
other HART device using a 4-20 mA loop, provided a minimum load resistance of 250Ω is present between
the Communicator and the power supply. The Communicator uses the Bell 202 frequency-shift keying
(FSK) technique of high-frequency digital signals imposed on a standard transmitter current loop of 4-20
mA. Because no net energy is added to the loop, HART communication does not disturb the 4-20 mA
signal. The Communicator can be used in hazardous and non-hazardous locations.
WARNING
Explosions can cause death or serious injury. Before connecting the HART
Communicator in an explosive atmosphere, make sure that the instruments in the
loop are installed in accordance with intrinsically safe or non-incendive field wiring
practices. Refer to the Communicator nameplate and the manual supplied with the
Communicator for certifications and approvals before connecting.
2.2 COMMUNICATOR CONNECTIONS
The Communicator can interface with a transmitter from the control room, the instrument site, or any
wiring termination point in the loop. Connections are made through loop connectors on the Communicator’s
connection panel (Figure 2-1). The connection panel also may have a jack for the optional NiCad
recharger, and it has a serial port for a future connection to a personal computer (PC).
To interface with a transmitter or other HART device, connect the HART Communicator in parallel with
the instrument or load resistor. The connections are nonpolar. For intrinsically safe FM and CSA wiring
connections, see the manual supplied with the Communicator.
WARNING
Explosions can result in death or serious injury. Before making connections to the
serial port or NiCad recharger jack in an explosive atmosphere, check the
Communicator nameplate and the manual supplied with the Communicator for
approvals.
Figure 2-2 illustrates typical wiring connections between the HART Communicator and a loop with a
Model 340 transmitter or other HART-compatible device on a loop. The Communicator is quickly
connected into a transmitter loop.
May 1998
2-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
Connection Panel
Loop Connections,
Non-Polar
Serial Port
NiCad Recharger Jack,
Optional
X03032S0
LCD
F1
F2
F3
F4
Function Keys,
Software Defined
HART Communicator
Communicator Nameplate
On Back - See nameplate
for certifications and approvals
before connecting in a
hazardous location.
Communicator Model Number
and Serial Number On Back
I
ABC
DEF
1
2
3
JKL
MNO
PQR
4
5
6
STU
VWX
YZ/
7
8
#%&
0
Keypad number sequence
may be different from that
shown.
Action Keys
On/Off (I/O)
Up Arrow
Quick Access Key (>>>)
Previous Menu (Back, left arrow)
Down Arrow
Select (Forward, right arrow)
O
<
Alphanumeric Keys
9
>
.
GHI
* :+
_
Shift Keys - Use to select
alphabetic and other
characters above a
number, period or dash.
FIGURE 2-1 Model 275 Universal HART Communicator
2-2
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
Current Sense
Resistor 250 to
1100; See Note 3
X03033S0
Non-Hazardous
Location
Range Resistor
250, typical
Controller,
Recorder, or
Other 1-5 Vdc
Device; See
Note 2
Circuit
Junction
Hazardous
Location
+
Model 340
Terminals
_
_
+
TIE
See Note 4
I
I
O
O
I
O
See
Note 1
See
Note 1
I
O
Notes:
1. HART Communicator Connections:
Non-hazardous location - Connect as shown above.
Hazardous location - Refer to Communicator nameplate and the Manual supplied
with the Communicator for certifications and approvals before connecting.
The HART Communicator is a non-polar device.
2. The System Power Supply may be part of the host input device or a separate device.
3. Network resistance equals the sum of the barrier resistances and the current sense resistor.
Minimum value 250 Ohms; maximum value 1100 Ohms.
4. Supply and return barriers shown. Interconnect all cable shields and ground only at the barriers.
FIGURE 2-2 HART Communicator Connections to a Transmitter Loop
May 1998
2-3
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
A 40" (1 m) cable with a dual banana plug on one end and two mini-grabber plugs on the other is provided.
The dual banana plug is inserted into the top of the Communicator; the mini-grabber clips are connected to
lugs in the Model 340’s terminal board compartment or to the loop’s current sense resistance, usually at a
receiving instrument (see Note below).
NOTE
The HART protocol requires a network (loop) resistance between 250Ω and 1100Ω
to support communications. See Section 4.3.5 to determine resistance value and
loop supply voltage.
2.3 CONTROLS OVERVIEW
As shown in Figure 2-1, the front of the HART Communicator has five major functional areas: liquid
crystal display (LCD), function keys, action keys, alphanumeric keys, and shift keys. The next five sections
describe how each of these functional areas is used to enter commands and display data.
2.3.1 Liquid Crystal Display
The liquid crystal display (LCD) is an 8-line by 21-character display that provides communication between
the user and a connected device. When the HART Communicator is connected to a Model 340 transmitter
or other HART-compatible device, the top line of the Online menu displays the model name of the device
and its tag. A typical display is shown below:
MPCO 340A:PT100
Online
1->Loop Override
2 Calibrate/Test
3 Configure Xmtr
çz
HELP |SAVE
The bottom line of each menu is reserved for dynamic labels for the software-defined function keys, F1-F4,
which are found directly below the display. More information on software-defined function keys is given in
the next section.
2.3.2 Software-Defined Function Keys
The four software-defined function keys (softkeys), located below the LCD and marked F1 through F4, are
used to perform software functions as indicated by the dynamic labels. Pressing the function key
immediately beneath a label activates the displayed function.
The label appearing above a function key indicates the function of that key for the current menu. For
example, in menus providing access to on-line help, the HELP label appears above the F1 key. In menus
providing access to the Online menu, the HOME label appears above the F3 key. Table 2-1 lists these
labels and describes what happens when each function key is pressed.
2-4
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
TABLE 2-1 Function Keys with Their Labels and Actions Performed
F1
F2
F3
F4
HELP
ON/OFF
ABORT
OK
Access on-line help
activate or deactivate a
bit-enumerated binary
variable
terminate current task
Acknowledge
information on the
LCD
RETRY
DEL
ESC
ENTER
try to reestablish
communication
delete current character
or Quick Access Key
menu item
leave a value
unchanged
accept user-entered
data
EXIT
SEND
QUIT
EXIT
leave the current menu
send configuration data
to device
terminate session
because of a
communication error
leave the current menu
YES
PGUP
PGDN
NO
Answer to yes/no
question
move up one help
screen
move down one help
screen
answer to yes/no
question
ALL
PREV
NEXT
ONE
Include current Quick
Access Key item on
Quick Access Key
menu for all devices
go to previous message
in a list of messages
go to next message in a
list of messages
include Quick Access
Key item for one device
NEXT
SAVE
HOME
go to the next variable
in off-line edit
save information to
Communicator
go the top menu in the
device description
FILTR
MARK
BACK
Open customization
menu to sort
configurations
toggle marked variable
in configuration to be
sent to a field device
go back to the menu
from which HOME
was pressed
XPAND
EDIT
opens detailed
configuration
information
edit a variable value
CMPRS
ADD
closes detailed
configuration
information
add current item to
Quick Access Key
menu
May 1998
2-5
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2.3.3 Action Keys
Directly beneath the LCD and software-defined function keys are six blue, white, and black action keys.
Each has a specific function as described below:
I
O
ON/OFF KEY – Use to power-up the Communicator. When the Communicator is turned on, it
automatically searches for a HART-compatible device on the 4-20 mA loop. If no device is
found, the Communicator displays the Main menu:
HART Communicator
1->Offline
2 Online
3 Frequency device
4 Utility
If a HART-compatible device is found, the Communicator displays the Online menu:
MPCO 340A:PT100
Online
1->Loop Override
2 Calibrate/Test
3 Configure Xmtr
çz
HELP |SAVE
UP ARROW KEY – Use to move the cursor up through a menu or list of options or to scroll
through lists of available characters when editing fields that accept both alpha and numeric
data.
DOWN ARROW KEY – Use to move the cursor through a menu or a list of options or to
scroll through lists of available characters when editing fields that accept alpha and numeric
data.
LEFT ARROW/PREVIOUS MENU KEY – Use to move the cursor to the left or back to the
previous menu.
RIGHT ARROW/SELECT KEY – Use to move the cursor to the right or to select a menu
option.
QUICK ACCESS KEY (HOT KEY) – When the Communicator is on and connected to a
HART-compatible device, pressing the Quick Access Key instantly displays the Quick Access
Key menu of user-defined options. When the Communicator is off and the Quick Access Key is
pressed, the Communicator automatically powers-up and displays the Quick Access Key
menu.
See Section 2.6 for more information on using the Quick Access Key.
2-6
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
IMPORTANT
When performing certain operations, the message “OFF KEY DISABLED”
indicates that the Communicator cannot be turned off. This feature helps prevent
accidental shutoff of the Communicator while the output of a device is fixed or a
device variable is being edited.
2.3.4 Alphanumeric and Shift Keys
The alphanumeric keys perform two functions: (1) rapid selection of menu options and (2) data entry. The
shift keys located below the alphanumeric keys on the keypad are used during data entry to select from
among the characters available above each number.
2.3.4.1 Rapid Selection of Menu Options
From any menu, use the keypad to select available options in two ways. First, use the UP or DOWN arrow
keys, followed by the RIGHT ARROW/SELECT key, to access available options displayed on the LCD.
As an alternative, use the rapid select feature. Simply press the number on the alphanumeric keypad that
corresponds to the desired menu option. For example, to quickly access the Utility menu from the Main
menu, simply press “4” on the keypad.
2.3.4.2 Data Entry
Some menus require data entry. Use the alphanumeric and shift keys to enter all alphanumeric information
into the HART Communicator. Pressing an alphanumeric key alone while editing causes the large character
in the center of the key (number 0-9, decimal point, or dash) to be entered.
Pressing and releasing a shift key activates shift and causes the appropriate arrow icon (ã, á, or ä) to
appear in the upper right-hand corner of the LCD. When shift is activated, the indicated alpha characters or
symbols are entered when the keypad is used.
Example
To enter a number, such as “7,” simply press the number key.
To enter one of the small characters appearing above the large numeral (i.e., a letter, space, or
mathematical symbol), first press and release the corresponding shift key at the bottom of the keypad, then
press the desired alphanumeric key. To enter the letter “E,” press and release the middle shift key, then
press the number “2” key.
To deactivate a shift key without entering a letter, space, or mathematical symbol, simply press that shift
key again.
May 1998
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MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2.4 GETTING TO KNOW THE COMMUNICATOR
The HART Communicator operates in either of two modes: on-line or off-line. Off-line operation is used to
create or edit a configuration that can then be downloaded to a HART device, such as the Model 340. Online operation is used to download a configuration to a HART device, upload a configuration, edit HART
device operating parameters, and monitor process values.
For off-line operation, the Communicator need not be connected to a HART device. On-line operation
requires a connection to a HART device.
The menu that appears first when the Communicator is turned on depends on the mode. When the
Communicator is powered-up in off-line mode, the first menu displayed is the Main menu. When the
Communicator is powered-up in on-line mode, the first menu displayed is the Online menu. To work offline when connected to the loop, access the Main menu from the Online menu by pressing the LEFT
ARROW/PREVIOUS MENU key.
2.4.1 Display Icons
Several different symbols (icons) appear on the LCD to show the state of the Communicator and provide
visible response to actions of the user. Figure 2-3 shows the display icons and how they relate to keypad
functions.
HART Communication
( indicates connected
device is configured in
the burst mode)
HARTCommunicator
Access Additional
Menu Items
Device Info
2 Dev Type
3 Dev ID
4 Tag
5 MM/DD/YY
6 Write Protect
Low Battery
0
10/10/10
Yes
Access
Previous
Menu
X03034S0
FIGURE 2-3 Communicator Display Icons
2.4.2 Menu Structure
The HART Communicator uses a hierarchical menu structure. That is, high-level menus are accessed first,
and they provide access to lower-level menus. This structure groups related functions together and
minimizes the number of options displayed at once.
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May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
To learn how the menu structure works, perform the following actions:
1. With the Communicator off-line (not attached to any devices), press the ON/OFF key to turn the
Communicator on. It displays the Main menu, with the cursor (->) positioned at “1 Offline.”
2. Access the Utility menu by pressing the DOWN arrow key three times, then pressing the RIGHT
ARROW/SELECT key. The display changes to show the Utility menu.
3. Access the Configure Communicator menu from the Utility menu by pressing the RIGHT
ARROW/SELECT key. The display changes to show the Configure Communicator menu.
4. Access the Contrast menu by pressing the DOWN arrow once, then pressing the RIGHT
ARROW/SELECT key. The display shows a message explaining how to adjust the LCD contrast.
5. Press ESC (F3) to return to the Configure Communicator menu.
6. Press the LEFT ARROW/PREVIOUS MENU key two times to return to the Main menu.
7. Press the ON/OFF key to turn the Communicator off.
2.4.3 Reviewing Installed Devices
For the HART Communicator to recognize a HART-compatible device, it must have a description for that
device installed. The HART Communicator is supplied from the factory with descriptions for Model 340
Transmitters and other HART-compatible devices from leading manufacturers. In addition, it contains a
generic device description, which allows limited access to most HART devices when no device description
for that specific device exists in the Communicator.
To review the currently installed devices on the Communicator, use the following steps:
1. Turn on the Communicator (off-line) to display the Main Menu.
2. From the Main menu, press “4” on the keypad for quick access to the Utility Menu.
3. From the Utility menu, press “5” on the keypad to access the simulation mode. The LCD shows the
Manufacturer menu, which contains a list of manufacturers whose device descriptions are installed in
the Communicator.
4. Press the DOWN arrow until Moore Products appears. Press the RIGHT ARROW/SELECT key to
reveal the Model menu, which lists the Moore Products Co. devices currently installed in the
Communicator (see Table 2-2).
5. To end the review of devices, press the LEFT ARROW/PREVIOUS MENU key three times.
6. Turn off the Communicator or proceed to the next section.
May 1998
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MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
TABLE 2-2 Moore Device Descriptions
MODEL
FIELD DEVICE
REVISION
DESCRIPTION
APPROXIMATE VINTAGE1
340B
Dev V1, DD V1
340 Transmitter-Controllers
(pushbutton design)
8/90 - 8/96, Model #s 340__B…
340A
Dev V1, DD V1
340 Transmitter (pushbutton design)
8/90 - 8/94, Model #s 340__A…
344
Dev V1, DD V1
344 Transmitter-Controller
8/90 - 8/94 Model #s 344…
Dev V2, DD V1
344 Transmitter-Controller
8/90 - Present, Model #s 344…
341 Type 5
Dev V1, DD V1
341 Transmitter
8/94 - Present, Model #s 341…
340A Type 6
Dev V1, DD V1
340 Transmitter (pushbutton design)
8/94 - 8/96, Model #s 340__A…
Dev V2, DD V1
340 Transmitter (magnetic switch
design)
Present, Model #s 340__B…
Note
1
Always verify the Model and Field Device Revision for the device at hand using the Quick Access
Key\Status\Model command of the Model 275 HART Communicator.
2.5 MAIN MENU
When the Communicator is not connected to a device, the
first menu to appear after powering up is the Main menu (at
right). If the Communicator is turned on when connected to a
device, access the Main menu by pressing the LEFT
ARROW/PREVIOUS MENU key. Depending on which
submenu of the on-line series is displayed, it may be
necessary to press the LEFT ARROW/PREVIOUS MENU
key more than once. Alternatively, press HOME (F3) to
display the Online menu, followed by the LEFT
ARROW/PREVIOUS MENU key to display the Main menu.
HART Communicator
1->Offline
2 Online
3 Frequency Device
4 Utility
From the Main menu, access additional menus by moving the cursor to them with the UP or DOWN arrow
keys, followed by pressing the RIGHT ARROW/SELECT key, or simply by pressing the appropriate
number (1-4) on the alphanumeric keypad.
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May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
2.5.1 Offline Menu
The Offline menu provides access to two other menus: New Configuration and Saved Configuration. These
two configuration menus can be used without connecting to a HART-compatible device, but it is not
possible to send saved data to a device if no device is connected.
From the Main menu, press “1” on the keypad or the RIGHT ARROW/SELECT key to access the Offline
menu. The complete menu tree for the Offline Menu is shown in Figure 2-4.
1 New
Configuration
Manufacturer
Model
2 Saved
Configuration
Name
Saved Configuration
1 Edit
2 Copy to . . .
3 Send
4 Print
5 Delete
6 Rename
7 Compare
Fld dev rev
Edit
1 Mark all
2 Unmark all
3 Edit
individually
4 Save as . . .
From Blank Template
1 Mark all
2 Unmark all
3 Edit individually
4 Save as . . .
Save As . . .
1 Location
2 Name
3 Data Type
Save As . . .
1 Location
2 Name
3 Date Type
FIGURE 2-4 Offline Menu Tree
2.5.1.1 New Configuration
This option is used to compile a custom set of device configuration data for downloading later to one or
more HART-compatible devices. Downloading the same data to multiple devices ensures that they all store
identical configuration data.
Use the following steps to compile off-line, new device configuration data:
2. Press “1” to enter a new configuration. The Manufacturer
menu appears.
HART Communicator
Offline
çz
1->New configuration
2 Saved configuration
3. Choose a manufacturer by scrolling to the manufacturer name
with the DOWN arrow, then pressing RIGHT
ARROW/SELECT. The Model menu appears.
HELP
1. From the Main menu, press “1” to access the Offline menu.
4. From the Model menu, choose a device by scrolling through
the list, then pressing RIGHT ARROW/SELECT. The Field
Device Revision (Fld dev rev) menu appears.
The Field Device Revision menu contains the currently
installed software revisions for the field device and device
descriptions (DD) for the model selected from the Model
menu.
May 1998
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MODEL 275 UNIVERSAL HART COMMUNICATOR
Select the software revision (RIGHT ARROW/SELECT or
number) to access the Blank Template menu (at right). To
discover the software revision for a particular device, connect
the Communicator to the device and follow instructions given
in the device manual.
To find the software revision number for a Model 340
Transmitter, establish a connection to the Communicator,
then press the Quick Access Key. From the Quick Access
Key menu, press “1” to view the Status menu. The software
revision is line 3. If the software revision is not displayed,
press “3” to view the Software rev screen.
UM340-1
Unnamed
From Blank Template çz
1->Mark all
2 Unmark all
3 Edit individually
4 Save as...
HELP |SAVE
5. With the Blank Template menu displayed, choose from the
options available, as follows:
Mark All – Flag all configurable variables before sending
them to a HART-compatible device.
Unmark All – Remove the flags from all configurable
variables in the configuration. Unmarked configuration
variables cannot be sent to a connected HART-compatible
device.
Edit Individually – Open the Edit individually menu (at
right).
Example
The Edit individually menu permits the user to change a
configuration parameter. For example, to change the
engineering units from inH2O to mmH2O, press the EDIT
function key (F3) to display the Measured Var Unit menu
(below right).
With the Measured Variable Unit menu displayed, use the
DOWN arrow to highlight the new unit, then press the
ENTER function key (F4). Or, to leave the Unit variable
menu without making any change, press the ESC function key
(F3) to return to the Edit individually menu. From the Edit
individually menu, use EXIT to go back to the Blank
Template menu.
Unnamed
Edit individually
Unit
in H2O
Not marked to send
NEXT |MARK |EDIT |EXIT
Unnamed
Measured Var Unit
inH2O
inH2O
inHg
ftH2O
ê mmH2O
ESC |ENTER
Save As. . .
Selecting the Save As option allows a new configuration to be
saved to either the Memory Module or the Data Pack.
The Memory Module holds up to 10 typical configurations,
and contains the operating system software and device
application software in non-volatile memory. The Data Pack
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May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
stores up to 100 typical configurations in nonvolatile,
removable memory.
Example
From the Offline menu, choose 1 New configuration. This
displays the Manufacturer menu. Choose a device, then
choose a model from the Model menu. Choose a software
revision from the Fld dev rev menu.
The Communicator creates a configuration and displays the
Blank Template menu. Choose Save as... to display the Save
as... menu (at right). With the Location highlighted, press the
SAVE (F2) function key to save the configuration.
If the location highlighted is the Module, but the
configuration is to be stored in the Data Pack, or vice versa,
press the RIGHT ARROW/SELECT key to display the
Location menu. Choose either Module or Data Pack by
pressing ENTER (F4). This displays the Save as... menu
again. Press SAVE (F2) to save the configuration in the
desired location.
Unnamed
Save as...
çz
1->Location
Module
2 Name
3 Data Type Standard
HELP|SAVE
The Save As... menu also is used to enter or edit the
configuration Name and Data Type. To name a configuration,
simply choose option 2, then use the keypad with shift keys to
enter the name as shown at right.
Unnamed
Name
UNNAMED
MYNAME#1
When the Save As... menu is displayed, one of the options –
Standard, Partial, or Full – will be shown. To change the
option, move the cursor to the Data Type ______ line of the
Save As... menu and press the RIGHT ARROW/SELECT
key to display the Data Type menu (below right).
HELP|SAVE
Data Type Standard refers to all user-editable variables in a
device configuration. Data Type Partial refers to only the
marked editable variables. Data Type Full refers to a all
device variables, whether user-editable or not. In general, it is
best to save as Data Type Standard. Saving as Data Type
Full preserves a complete configuration for future reference.
Unnamed
Data Type
Standard
Standard
Partial
Full
HELP
ESC|ENTER
When all changes have been made, save the new
configuration to either the Memory Module or the Data Pack
and return to the Offline menu.
May 1998
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MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2.5.1.2 Saved Configuration
The second option on the Offline menu is the Saved Configuration
menu, which permits access to previously stored configuration
data.
1. Press “2” from the Offline Menu to display the Saved
Configuration menu (at right).
2. Select either Module Contents or Data Pack Contents to open
stored configurations. Both storage locations list all saved
configurations by assigned Tag. See XPAND (below) for
more configuration identification details. (Note: The PC
option shown on the menu is not operational with firmware
release 1.6.)
The Module Contents menu, which lists the configurations
currently stored in the Memory Module, is shown at right.
The Data Pack menu is similar. Both give the user several
options for handling and viewing configuration data, as
explained below.
HART Communicator
Saved Configuration çz
1->Module Contents
2 Data Pack Contents
3 PC
HELP
HART Communicator
Data Pack Contents
->PT101
PT102
PT103S
PT104
çz
FILTR
FILTR|XPAND
The FILTR function key (F1) opens a menu that provides
both Sort and Filter options. These options select only the
chosen configurations from all those stored. This is
particularly valuable for the Data Pack, which stores up to
100 configurations.
Sort allows unique device configurations to be grouped and
displayed by Tag, Descriptor, or user-assigned Name.
Filter allows configurations to be grouped and displayed
according to certain characters within the chosen device
identifier (Tag, Descriptor, or Name). It is useful for selecting
all the tags from a certain area of the process or plant.
When setting up a Filter (see display at right), two wildcard
characters, the period (.) and the asterisk (*) are used. The
period replaces a single character of any value. The asterisk
replaces one or more alphanumeric characters of any value.
For example, if A-*-.1 is entered as the filter, the
configurations displayed will be all those with device tags
starting with A-, followed by any combination of characters
(e.g., XYZ, S2, 3R) followed by a dash, followed by any
single character (e.g., 1, D, M), and ending with a 1. The tags
A-M1-B1, A-N2-Z1, or A-SF-X1 would display, whereas the
tags BA53, PT101, or ATT48 would not display.
2-14
HART Communicator
Tag Filter
*
A-*-1
HELP|DEL |ESC |ENTER
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
XPAND
The XPAND function key allows a user to view the Tag,
Descriptor, and Name for the configuration being edited or
viewed. Selecting Compress restores the previous compressed
display, which shows only the current Tag, Descriptor, or
Name.
3. With the Module Contents or Data Pack Contents menu
displayed, press the RIGHT ARROW/SELECT key to open
the Saved Configuration menu for a device that was
highlighted (at right).
Edit – displays the Edit menu, providing the same functions
as described under “Edit individually” in Section 2.5.1.1.
When editing off-line, only stored data may be edited.
Moreover, data stored as a Partial configuration must be
converted to a Standard configuration, then saved, prior to
editing.
PT118
Saved Configuration
1->Edit
2 Copy to...
3 Send
4 Print
5 Delete
HELP
çz
Copy To... – specifies the storage location for a copy of the
configuration. Copy To... also provides a way to change the
configuration name.
Send – sends a saved configuration to a connected device.
Print – not implemented with firmware release 1.6.
Delete – removes a saved configuration from memory. A
confirmation message appears. Press Yes or No to complete the
function.
Rename – provides access to the configuration name editing
menu. After making name changes, enter and save the data to
return to the previous storage location menu.
Compare – compares a selected device configuration from a
stored location with other device configurations. The HART
Communicator can compare device types, variables, marked lists,
and other configuration parameters. Messages appear indicating if
the configurations compared are the same or different.
May 1998
2-15
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2.5.2 Online Menu
The Online menu permits a Model 340 Transmitter to be tested and configured while it is operating.
Options available through the Online menu are summarized in Figure 2-5. The Online menu is displayed
immediately if a device description for the connected device exists in the Communicator. If not, the Generic
Online menu is displayed (see Figure 2-6).
Main Menu
From the Main menu, with a HART-compatible device connected,
press “2” to access the Online menu (at right). The Online menu
displays the name of the device at the top of the LCD, if it is a
supported device. If a device description for the connected device
is not present in the Communicator, contact the manufacturer of
the device.
When no device description is found, the Communicator provides
a generic interface, which enables users to perform functions
common to all HART-compatible devices. Model 340-specific
menu options are described in detail in Sections 3 and 6.
MPCO 340A:PT100
Online
1->Loop override
2 Calibrate/Test
3 Configure Xmtr
çz
HELP |SAVE
Generic Menu
The Generic Online menu (at right) is the first menu in the generic
interface. It displays critical, up-to-date device information.
Configuration parameters for the connected device may be
accessed using the Device setup option. Figure 2-6 shows the
complete Generic Online menu tree.
From the Online menu, use the options below to change device
configurations.
1151:GENERIC
♥
Online
çz
1->Device setup
2 PV
50.0000 inH2O
3 AO
12.000 mA
4 LRV
0.0000 in H2O
5 URV 100.0000 in H2O
SAVE
Device setup – provides access to the Device Setup menu.
Configurable device parameters common to all HART-compatible
devices can be accessed from this menu.
Primary Variable (PV) –the dynamic primary variable and the
related engineering unit. When the primary variable contains too
many characters to display on the Online menu, access the PV
menu to view the primary variable and related engineering units
by pressing “1.”
Analog Output (AO) – the dynamic output and the related
engineering units. The analog output is a signal on the 4-20 mA
scale that corresponds to the primary variable. When analog
output contains too many characters to display on the Online
menu, access the PV AO Menu to view the analog output and
related engineering unit by pressing “3.”
2-16
May 1998
UM340-1
1 Loop Override
2 Calibrate/Test
3 Configure Xmtr
MODEL 275 UNIVERSAL HART COMMUNICATOR
1 Self test
2 Calibrate
1 Zero trim
2 Calibrate DAC
3 On-Line Zero
1 Write protect
1 Enable
2 Disable
2 Sensor Input
1 MV Units
2 MV Lo
3 MV Hi
4 Damping
5 Transfer Fct
6 Transfer Fct Cutoff
7 Zero Dropout
8 Active Input
3 Totalizer Block
1 Fullscale value
2 Timebase
3 Multiplier
4 Units
5 Zero Dropout
6 Local display
4 Characterizer
1 Characterizer
2 Characterizer Posi
3 X1
4 Y1
5-10 ETC.
5 Operator Display
1 PV Units
2 PV Lo
3 PV Hi
4 AutoRerange
5 Local Units
6 Autotoggle
7 Toggle Time
6 Transmitter ID
7 Output Block
1 Tag
2 Descriptor
3 Message
4 Date
5 Device S/N
6 Polling addr
1 Failsafe Level
8 Alarm Block
9 SP Track & Hold
A/M Transfer
Controller
1 Tracking SP
2 PUSP
1 Power-Up Mode
2 Auto Only
3 PUV
1 Linear
2 Square Root
3 3/2 Power
4 5/2 Power
1 MV
2 MV Lo
3 MV Hi
4 Set Lo
5 Set Hi
1 OFF
2 ON
1 % Range
2 PV Units
3 MV Units
4 %, MV and PV
5 Totalizer Only
1 Alarm 1
2 A1 Setpoint
3 A1 Type
4 Alarm 2
5 A2 Setpoint
6 A2 Type
7 Self Clear NAK
8 Out of Service
1 Controller
2 Type
3 Action
4 PG
5 TI
6 TD
7 DG
8 MR
9 MR Tracking
FIGURE 2-5 Online Menu Tree for Model 340 Transmitter
May 1998
2-17
MODEL 275 UNIVERSAL HART COMMUNICATOR
1 Device setup
2 PV
3 AO
4 LRV
5 URV
1 Process
variables
1 Present variable
2 Percent range
3 Analog output
2 Diagnostics
and Service
1 Test device
2 Loop Test
3 Calibration
3 Basic Setup
4 Detailed setup
5 Review
UM340-1
1 Self test
2 Status
1 Rerange
1 Keypad Input
2 Apply Values
1 Tag
2 Unit
3 Range values
4 Device info.
5 Xfer functn
6 Damp
2 Trim analog output
3 Sensor trim
1 D/A trim
2 Scaled D/A trim
1 Sensors
1 Process variables
2 Sensor service
3 Unit
2 Signal condition
3 Output condition
4 Device
information
1 Date
2 Descriptor
3 Message
4 Write protect
5 Meter type
1 Process variables
2 Range values
3 Unit
4 Xfer Fnctn
5 Damp
1 Process variables
2 Analog output
3 AO Alrm typ
4 HART output
1 Field device info
2 Sensor information
3 Meter type
4 Self test
1 Sensor trim
2 Characterize
1 Loop test
2 D/A trim
3 Scaled D/A Trim
1 Poll Address
2 Number of Request
Preambles
3 Burst mode
4 Burst option
1 Tag
2 Date
3 Descriptor
4 Message
5 Model
6 Write protect
7 Revision #’s
8 Final asmbly num
9 Dev id
10 Distributor
FIGURE 2-6 Generic Online Menu Tree
Lower Range Value (LRV) – the current lower range value and
the related engineering unit. When the lower range value contains
too many characters to display on the Online menu, access the PV
LRV Menu to view the lower range value and related engineering
unit by pressing “4.”
Upper Range Value (URV) – the current upper range value and
the related engineering unit. When the lower range value contains
too many characters to display on the Online menu, access the PV
URV Menu to view the upper range value and related engineering
unit by pressing “5.”
2-18
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
2.5.3 Frequency Device Menu
From the Main menu, press “3” to access the Frequency Device menu. This menu displays the frequency
output and corresponding pressure output for current-to-pressure devices. For Model 340 transmitters, the
display frequency and pressure values are both “none.”
2.5.4 Utility Menu
From the Main menu, press “4” to access the Utility menu (at
right). This menu provide functions that affect the operation of
the Communicator, not the connected devices.
2.5.4.1 Configure Communicator
From the Utility Menu, press “1” to access the Configure
Communicator menu (below right). Use this menu to set the
polling, adjust the contrast of the LCD, set the Communicator
shutoff time, or set how many diagnostics messages to ignore
before a warning message is displayed.
Use the Polling option to direct the HART Communicator to
search for a connected device. The Communicator finds every
device in the loop and lists them by tag number. If Polling is
Never Poll, then the Communicator will not find a connected
device.
HART Communicator
Utility
çz
1->Configure Communic
2 System Information
3 Listen for PC
4 Storage Location
5 Simulation
HART Communicator
Configure Communica çz
1->Polling
2 Contrast
3 Off Time
4 Ignore diagnostics
HELP
The Contrast menu is used to change the LCD contrast. Contrast
returns to the default value when the Communicator is turned off.
Off Time is used to set the Communicator to turn off
automatically when not in use to conserve battery power.
The Communicator normally displays diagnostic messages from a
connected device. The Ignore Diagnostics option permits the user
to specify the number of messages to ignore so that messages will
not be displayed as often, extending the time between displayed
messages. The message count defaults to a nominal count of 50
each time the Communicator is turned on.
May 1998
2-19
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2.5.4.2 System Information
From the Utility menu, press “2” to access the System
Information menu (at right). This menu can be used to provide
information on the motherboard (e.g., firmware revision number),
the module hardware and software characteristics, and the Data
Pack EEPROM.
2.5.4.3 Listen for PC
HART Communicator
System Information
1->Motherboard
2 Module
3 Data Pack
çz
HELP|DEL |ESC |ENTER
Not implemented in firmware release 1.6.
2.5.4.4 Storage Location
From the Utility menu, the Storage Location menu (at right)
provides access to data concerning the Memory Module or the
Data Pack. Information available through this menu includes a
label for the Memory Module or Data Pack, a feature that
displays the total storage used (bytes) and the storage remaining
(“free” bytes). The PC selection is not implemented in firmware
release 1.6.
HART Communicator
Storage location
1->Module
2 Data Pack
3 PC
çz
HELP|DEL |ESC |ENTER
2.5.4.5 Simulation
The HART Communicator provides a mode that allows users to
simulate an on-line connection to a HART-compatible device
without connecting to the device. The simulation mode is a
training tool that allows users to become familiar with different
devices before configuring them in a critical environment.
Simulation of an on-line connection is done by selecting a
manufacturer from the Manufacturer menu, then selecting a
device from the Model menu, just as is done when on-line. After
selecting a software revision, the Online menu for the simulated
device is displayed. Functions are the same as those available
when on-line.
2-20
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
2.6 USING THE QUICK ACCESS KEY
Pressing the Quick Access Key (Hot Key) while on-line displays the Quick Access Key menu, a userdefinable menu that provides immediate access to up to 20 frequently performed tasks. The Quick Access
Key menu is accessible when the Communicator is powered and on-line, or when the Communicator is off,
by simply pressing the Quick Access Key. For the Quick Access Key to be active, the Communicator must
be connected properly to a HART-compatible device.
From the factory, the Quick Access Key menu includes (for Model 340 only):
•
XMTR Variables – View such variables as percent range, process value, set point, and valve.
•
Status – Determine model number and other transmitter identification information, errors, alarm status,
and totalizer status.
•
Totalizer Control – Stop, start, reset, and clear the totalizer.
•
PID Control – Change setpoint, change valve, change mode from auto to manual, and tune controller
•
Range Xmtr – Choose measured variable and process variable units, set high and low values, auto
rerange, and choose a transfer function
Use of these functions is described in Section 6.1.3. More options can be added to provide rapid access to
frequently performed tasks. User-defined options can be deleted later, but the five factory options are
permanent.
To use the Quick Access Key:
1. Connect the Communicator to a HART-compatible device.
2. Press the Quick Access Key (upper right-hand key in the
action keys group). The Communicator will power-up and
display the Quick Access Key menu (at right).
Before any custom options have been installed, the Quick
Access Key menu displays only the five factory-installed
options. To add options, see Section 2.6.1.
MPCO 340A:PT100
Quick Access Key
çz
1à
à XMTR Variables
2 Status
3 Totalizer Control
4 PID Control
5 Range Xmtr
SAVE
3. Use the UP and DOWN arrows followed by the RIGHT
ARROW/SELECT key to choose an option, or press the
option’s number on the keypad. The menu for the chosen
option displays.
4. Follow the instructions given in Section 6.1.3 to use the
option selected.
5. When finished, press the Quick Access Key to return to the
previous menu.
May 1998
2-21
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2.6.1 Adding Quick Access Key Options
The Quick Access Key menu contains space for up to 20 on-line options. For example, if device tags and
damping must be changed often, simply add both of them to the menu. The Communicator automatically
saves them so they can be accessed quickly by pressing the Quick Access Key.
From one of the menus or submenus reached via the Online menu, use the following steps to add
customized options to the Quick Access Key Menu:
1. Using the UP or DOWN arrow keys, move the menu bar to
highlight the option to be added to the Quick Access Key
menu (e.g., Damping, under the Configure Xmtr\Sensor Input
menu).
2. Press any shift key, release it, then press the Quick Access
Key. The Hotkey Configuration menu displays (at right).
The Hotkey Configuration menu displays the new topic being
added to the list of current Quick Access Key options. For
example, in the figure at right, Damping is being added.
3. Press ADD (F3) to add the option. Pressing EXIT (F4)
terminates the procedure and displays the menu that was
displayed when “Shift,” Quick Access Key was pressed.
MPCO 340A:PT100
Hotkey Configuration
ADD: Damping
XMTR Variables
Status
Totalizer Control
PID Control
ADD |EXIT
4. After pressing ADD (F3), either press ALL (F1) to add the
new option to the Quick Access Key menu for all the HARTcompatible devices supported by the Communicator or press
ONE (F4) to add the option to the Quick Access Key Menu
only for the type of device that is currently connected.
5. Next, the question “Mark as read-only variable on Quick
Access Key menu?” may appear. Press YES (F1) to mark the
variable for this option as read-only. Press NO (F4) to mark
the variable as read/write. Marking a parameter for a device
as read-only allows users to view, but not change, the
parameter using the Quick Access Key Menu. Marking it as
read/write permits the value to be changed from the Quick
Access Key menu.
Finally, “Display value of variable on hotkey menu?” is
displayed. Press YES (F1) to display the current variable
associated with the option next to the option on the Quick
Access Key menu as shown at right for Damping and Tag.
Press NO (F2) not to display the variable on the Quick
Access Key menu.
MPCO 340A:PT100
Quick Access Key
çz
á 3 Totalizer Control
4 PID Control
5 Range Xmtr
6 Damping
2.00 s
7->Tag
PT100
HELP|SAVE
6. When finished adding options, press EXIT (F4) to exit the
Hotkey Configuration menu and return to the menu of the last
option deleted.
2-22
May 1998
UM340-1
MODEL 275 UNIVERSAL HART COMMUNICATOR
2.6.2 Deleting Quick Access Key Options
Use the following steps to delete an option from the Quick Access
Key menu:
1. From any on-line menu, press any shift key, release it, then
press the Quick Access Key.
2. The Hotkey Configuration menu displays (at right).
3. Using the UP or DOWN arrow key, move the menu bar to
highlight the option to be deleted and press DEL (F2).
Factory-provided options cannot be deleted.
4. When finished deleting options, press EXIT (F4) to exit the
Hotkey Configuration menu and return to the menu of the last
option deleted.
MPCO 340A:PT100
Hotkey Configuration
ADD: Descriptor
á PID Control
Range Xmtr
Damping
Tag
DEL |ADD |EXIT
n
May 1998
2-23
MODEL 275 UNIVERSAL HART COMMUNICATOR
UM340-1
2-24
May 1998
UM340-1
COMMISSIONING AND BENCH TESTING
3.0 COMMISSIONING AND BENCH TESTING
Before operating a Model 340 on-line, the instrument should be set up either at the bench or in the field and
commissioned using the HART Communicator. Commissioning consists of checking that the transmitter is
operational and that all configuration information is correct. For an in-depth discussion of transmitter
configuration, refer to Section 6 On-Line Configuration and Operation.
3.1 COMMISSIONING PROCEDURE
A Model 340 can be commissioned either before or after installation. Commissioning on the bench before
installation is recommended. A complete transmitter functional test can be performed and configuration
procedures can be practiced. If commissioning after installation, install the transmitter as described in
Section 4, then return to this section.
To commission the transmitter on the bench, make the connections shown in Figure 3-1. For commissioning
in the field, use either the set-up shown in Figure 3-2 or the appropriate figure in Section 4.
Digital
Milliammeter
Bench Power
Supply (DC)
_
X03036S0
+
+
250
_
Model 340
Terminals
Note:
Loop current can also be
displayed on optional
Smart Display in 0-100%.
_
+
TIE
I
O
FIGURE 3-1 Bench Test Connections
May 1998
3-1
COMMISSIONING AND BENCH TESTING
UM340-1
X03037S0
+
_
Digital
Milliammeter
Circuit
Junction
1
+
Controller,
Recorder,
Indicator, or
other 1-5 Vdc
Device
See Note 1
2
Model 340
Terminals
3
250
_
_
+
System Power
Supply
_
TIE
+
Notes:
1. Remove jumper between Circuit Junction terminals 1 and 2 and connect
DMM as shown. Reconnect jumper after disconnecting DMM.
I
O
2. Loop current can also be shown on transmitter's optional Smart
Display in 0-100%.
FIGURE 3-2 Field Test Connections
3.1.1 Test Equipment Needed
TEST EQUIPMENT
DESCRIPTION (see Specifications, Section 9.3.2)
Power Supply
10 to 42 Vdc, see Section 4.3.6
Multimeter:
Current
Range: 4 to 20 mA to measure loop current
Voltage
Range: 10-50 Vdc to measure power supply and loop voltage
Current Sense Resistor
250 to 1100Ω to support HART digital communications
Configuration Device
HART Communicator
NOTE
Test equipment should be 2 to 10 times more accurate than the transmitter
accuracy.
3-2
May 1998
UM340-1
COMMISSIONING AND BENCH TESTING
3.2 ESTABLISHING COMMUNICATION
1. Connect the transmitter, power supply, and HART
Communicator in a loop.
2. Apply power to the transmitter.
3. Press the HART Communicator’s ON/OFF key. The first
display is the Online menu (at right).
4. If the Online menu does not appear, or if a “Device not
found” message displays, check connections and try again.
3.3 TESTING THE TRANSMITTER
MPCO 340A:PT100
Online
1->Loop Override
2 Calibrate/Test
3 Configure Xmtr
çz
HELP |SAVE
Although a Model 340 Transmitter continuously performs an online self-test, a more extensive self-test can be performed when
communication with the HART Communicator has been
established.
1. From the Online menu, choose option 2, Calibrate/Test to
display the Calibrate and Test selections.
2. From the Calibrate/Test menu, choose option 1, Selftest.
Press the RIGHT ARROW/SELECT key to start the test.
3. The Communicator will display a warning screen (at right). If
a process might be harmed by a change in transmitter output,
press “1,” ABORT to stop the test. If it is okay to proceed,
press “2,” CONTINUE.
MPCO 340A:PT100
WARNING! Self test
may bump transmitter
output.
1 ABORT
2 CONTINUE
ABORT|ENTER
4. The transmitter performs the self-test.
• If testing is successful, the message “Transmitter
PASSED the transmitter selftest” displays.
• If testing fails, the message “Transmitter FAILED the
transmitter selftest” displays, and the transmitter goes to
the prescribed failsafe condition.
5. Press OK (F4) to acknowledge the test results and display the
Calibrate/Test menu.
3.4 REVIEWING CONFIGURATION DATA
Before placing a transmitter in service, use the HART
Communicator to check that the proper configuration information
has been stored.
1. Establish communication as described in Section 3.2.
2. From the Online menu, press “3” to view the Configure Xmtr
menu (at right). For each of the function blocks on this menu,
check to see if each of the parameters is set to the correct
value as recorded in user documentation of parameters
(Appendix C). See Section 6 for detailed information on
changing function block parameters.
May 1998
MPCO 340A:PT100
Configure Xmtr
çz
1->Write protect
2 Sensor Input
3 Totalizer Block
4 Characterizer
ê5 Operator Display
HELP |SAVE |HOME
3-3
COMMISSIONING AND BENCH TESTING
UM340-1
3. For each function block, perform the following steps:
1) Use the UP or DOWN arrow key to highlight the function block. Press the RIGHT
ARROW/SELECT key to view the function block options.
2) Examine each of the options on the function block menu, changing values if necessary. When the
first change is made, the SAVE softkey changes to SEND.
4. When all configuration parameters have been examined and
changed as needed, press SEND to download the
configuration to the transmitter. The SEND softkey changes
to SAVE.
5. If this configuration will be used for other transmitters, save
the configuration to either the Memory Module or Data Pack
by pressing SAVE (F3) from the Configure Xmtr menu or
any of its submenus.
3.5 CHECKING TRANSMITTER OUTPUT
After the transmitter configuration has been confirmed and
adjusted if necessary, check to be sure that the transmitter is
reading the proper pressure in the proper units. Use a dead weight
tester or other acceptable plant pressure standard to apply 0, 25,
50, 75, and 100% of input values to the transmitter. Check that
the corresponding outputs are 4, 8, 12, 16, and 20 mA.
With the transmitter configured properly, and with the test
equipment in place, perform the following steps:
1. Connect the HART Communicator and press the Quick
Access Key.
2. From the Quick Access Key menu, choose 1 XMTR
Variables to view the current transmitter output (at right).
3. Apply pressure representing 0% of the configured range.
Wait at least 5 seconds.
4. Choose “6” to see the current display. The current should
read 4.00 mA.
5. Repeat steps 1-4 for pressures representing 25, 50, 75, and
100% of the configured range. Check for the corresponding
pressure readings and current values.
MPCO 340A:PT100
♥
XMTR Variables
çz
1->% Range
34.0%
2 MV
8 ftH2O
3 PV
495 BBL
4 SP
495 BBL
ê5 V
15.0%
HELP |SAVE
This completes commissioning and bench testing of the transmitter.
n
3-4
May 1998
UM340-1
INSTALLATION
4.0 INSTALLATION
Transmitter installation is discussed in this section. Topics include: equipment delivery and handling,
environmental and installation considerations, and mechanical and electrical installation.
IMPORTANT
Before installing or servicing a transmitter:
•
Read the information on the nameplate and ensure that the correct model is at hand and that the correct
procedures are followed. See Section 9.1, Model Designations for an explanation of the model
designation alphanumeric sequence shown on the nameplate.
•
The installation must conform to the National Electrical Code and all other applicable construction and
electrical codes. Refer to the installation drawings in Appendix B when locating a transmitter in a
hazardous area.
•
Refer to Section 9.3.6 Special Conditions for Safe Use for approval agency requirements that affect
installation and use of the instrument. Refer to Appendix E for CENELEC for EEx d installations.
4.1 EQUIPMENT DELIVERY AND HANDLING
4.1.1 Factory Shipment
Prior to shipment, a transmitter is fully tested and inspected to ensure proper operation. It is then packaged
for shipment. Most accessories are shipped separately. Everything in a box is indicated on the box label.
4.1.2 Receipt of Shipment
Each carton should be inspected at the time of delivery for possible external damage. Any visible damage
should be recorded immediately on the carrier’s copy of the delivery slip.
Each carton should be unpacked carefully and its contents checked against the enclosed packing list. At the
same time, each item should be inspected for any hidden damage that may or may not have been
accompanied by exterior carton damage.
If it is found that some items have been damaged or are missing, notify Moore Products Co. immediately
and provide full details. In addition, damage must be reported to the carrier with a request for their on-site
inspection of the damaged item and its shipping carton.
4.1.3 Storage
If a transmitter is to be stored for a period prior to installation, review the environmental specifications in
Section 9.3.
4.2 ENVIRONMENTAL CONSIDERATIONS
Many industrial processes create severe environmental conditions. The conditions at each transmitter
location must be within the specifications stated in Section 9.3.
May 1998
4-1
INSTALLATION
UM340-1
Although the transmitter is designed to perform in harsh conditions, it is prudent to choose a location that
minimizes the effects of heat, vibration, shock, and electrical interference.
CAUTION
Exceeding the specified operating temperature limits can adversely affect
performance and may damage the instrument.
4.3 INSTALLATION CONSIDERATIONS
Sections 4.3.1 and 4.3.2 outline basic considerations needed to achieve a successful mechanical/ electrical
installation. The remaining sections then provide detailed pre-installation information.
4.3.1 Mechanical
•
XTC transmitters are suitable for, but not limited to:
–
Flow Measurement
–
Gauge Pressure Measurement
–
Level Measurement
–
Draft Pressure Measurement
–
Absolute Pressure Measurement
–
–
High Differential Pressure Measurement
Hydrostatic Tank Gauging Measurement
•
Determine if an optional Smart Display for local monitoring of transmitter output is required. Refer to
Section 9.1 for model designation or 9.2 for accessory part numbers.
•
Determine physical mounting of the transmitter. Consider:
– Optional brackets for pipe mounting or surface mounting
– Pipe or tank wall thickness, diameter, rigidity, and freedom from vibration
– Clearance for installation and maintenance and for reading the optional Smart Display
– Need to rotate Smart Display for viewing ease
Refer to Figures 9-1, 9-2, and 4-14 for transmitter dimensions and the figures in Sections 4.4 and 4.5
for typical mechanical installations. Refer to Section 9.3 for mechanical and environmental
specifications.
•
Determine if an explosion-proof or intrinsically safe installation is required. Refer to transmitter
nameplate for electrical classifications and to Sections 4.8 and 9.3.
An intrinsically safe installation requires user-supplied intrinsic safety barriers that must be installed in
accordance with barrier manufacturer’s instructions for the specific barriers used.
Transmitter certification is based on the “entity” concept in which the user selects barriers that permit
the system to meet the entity parameters.
4-2
May 1998
UM340-1
INSTALLATION
•
Models 340 D, A, and G – Consider pressure piping recommendations. Refer to Section 4.3.3.
•
Determine conduit routing. Refer to Section 4.6.2.
•
Consider bolting the transmitter to a two- or three-valve manifold.
Model 340D – Install a three-valve manifold because this device provides both an equalizing valve and
high and low pressure block valves. Use the equalizing valve to equalize pressure between inputs
before calibrating or servicing the transmitter. Use block valves to isolate the transmitter from the
process for servicing or removal.
Models 340A and G – Install a two-valve manifold for similar purposes to those listed above.
Model 340F – Consider using flushing rings to flush and clean the process connection without
removing the flange.
Prepare installation site drawings showing the following:
•
Location of the Master Device (e.g., HART Communicator or controller)
•
Location and identification of each transmitter
•
Routing plan of signal cable(s)
•
Location of any signal cable junctions for connecting the HART Communicator
4.3.2 Electrical
•
Determine transmitter operating mode (analog or digital) and type of Network needed; refer to Section
4.3.4.
•
Determine minimum power supply requirements. Refer to Section 4.3.5.
•
Select twinaxial cable type and determine maximum cable length. Refer to Section 4.3.6.
•
Determine the need for network junctions. Refer to Section 4.3.7.
•
Intrinsically Safe installations will need barriers. Refer to Section 4.3.8.
•
Consider the effect of connecting additional equipment (e.g., recorder, loop powered display) to the
network. Refer to Section 4.3.9.
•
Read Section 4.3.10 for shielding and grounding recommendations.
May 1998
4-3
INSTALLATION
UM340-1
4.3.3 Impulse Piping for Models 340D, A, and G
Impulse piping is the piping to be connected to the transmitter’s process connection(s). For suggested flow
and level measurement piping arrangements, refer to:
•
Model 340D - Figures 4-1 and 4-2
•
Model 340A or G - Figures 4-3 and 4-4
•
Model 340F - Figure 4-5
Note the following when planning and installing piping.
•
Install impulse piping in accordance with ANSI Code B31.1.0.
•
Make impulse piping length as short as possible to reduce frictional loss and temperature-induced
pressure variations. However, when using impulse lines on a high temperature process, locate the
transmitter far enough away from the heat source to keep it within temperature specifications [28°C
(50ºF) per foot cooling to a normal ambient is assumed for uninsulated impulse lines].
•
For lines between the process and transmitter, use impulse piping of 3/8" OD or larger to avoid friction
effects (causes lagging) and blockage.
•
Use the least number of fittings and valves possible to minimize leakage problems. TFE/PTFE tape is the
recommended thread sealant for process connections at the transmitter.
•
Valves used in pressure service should be either globe or gate type. Valves used in gas service should
be of a type that does not permit condensate to build up behind the valve.
•
Install sediment chambers with drain valves to collect solids suspended in process liquids or moisture
carried with non-condensing gases.
•
Install air chambers with vent valves at high point in piping to vent gas entrained in process liquid.
•
Remote diaphragm seals can be used to keep corrosive liquid or gas from the transmitter pressure inlets
and isolation diaphragm (see PI34-6 for details).
•
Alternatively, use sealing fluid to isolate the process from the transmitter. Sealing fluid must be of
greater density than process fluid and non-miscible.
•
For transmitters located above the process, slope piping from the transmitter at least 1 inch/foot (83
mm/M) down toward process. For transmitters below the process, slope piping at least 1 inch/foot (83
mm/M) up to process.
•
Protect pressure lines (by shielding if necessary) from objects or equipment that may bend or kink the
line causing fluid flow restriction.
•
Protect the pressure lines from extreme temperature ranges. Lines should be protected from freezing by
installing a heat trace.
•
A three-valve manifold should be used with a Model 340D. A two-valve manifold can be used with a
Model 340A or G transmitter to permit servicing and zero checks.
4-4
May 1998
UM340-1
INSTALLATION
Low
Pressure
Side
Low
Pressure
Side
Flow
High
Pressure
Side
High
Pressure
Side
Model 340D
Model 340D
3-Valve
Manifold
Flow
3-Valve
Manifold
Horizontal Main Line Flow
Transmitter Below Orifice - Preferred for Liquids and Steam
Horizontal Main Line Flow
Transmitter Above Orifice - Preferred for Gas Flow
High
Pressure
Side
Low
Pressure
Side
Low
Pressure
Side
Flow
Flow
Model 340D
High
Pressure
Side
3-Valve
Manifold
Model 340D
3-Valve
Manifold
Vertical Main Line Flow
Transmitter Below Orifice
Vertical Main Line Flow
Transmitter Above Orifice
X03038S0
FIGURE 4-1 Differential Flow Measurement Piping for
Gas and Liquid
May 1998
4-5
INSTALLATION
UM340-1
Fill Connection
LP Shut-Off
Valve
LP Shut-Off
Valve
Max. Range
HP Shut-Off
Valve
Max. Range
Span
Span
Min. Range
LP line
empty not filled
with condensate.
Suppressed-Zero: To
calculate maximum
distance, subtract
actual span setting
from range limit given
in specification.
Min. Range
HP Shut-Off
Valve
Note 3
Note 1
HP
See
Section 9
Specifications
for range
limit.
Elevated-Zero,
Distance Y,
Note 5
LP line
filled with
condensate
Note 3
Distance X
See Note 4
LP
HP
LP
Dripleg and Drain Valve
B. Pressurized (Closed) Vessel Installation:
Condensable Fluid
A. Pressurized (Closed) Vessel Installation:
Non-Condensable Fluid
Notes:
Max. Range
1. Transmitter may be mounted at or below the
minimum level to be measured.
HP Shut-Off
Valve
2. Open or vented vessels require only a high pressure
(HP) connection.
Span
Vent
Min. Range
Suppressed-Zero: To
calculate maximum
distance, subtract
actual span setting
from range limit given
in specification.
3. High pressure line senses static pressure plus level.
Low pressure line senses pressure only. The two
pressures oppose each other, canceling the effect
of static pressure.
4. Distance "X" can be any distance since both high
and low pressure lines have equal and opposite
forces which cancel the forces created by this
distance.
Vent
HP
C. Open Vessel Installation
5. Entire length of low pressure pipe is kept full of
condensate to act as a reference.
LP
6. See Appendix D for information on calculating
suppressed and elevated zero ranges.
X03039S0
FIGURE 4-2 Differential Liquid Measurement Piping
4-6
May 1998
UM340-1
INSTALLATION
For gases,
mounting
above the line
is preferred.
Model 340A
Safety
Shut-Off
Valve
(Gas)
Shut-Off
Valve
Union
Safety Shut-Off
Valve (Steam or
Liquid)
For liquids and
steam, mounting
below the line
is preferred.
Model 340A
OR
Shut-Off
Valve
OR
Air Chamber
with Vent Valve.
Install at high
point to collect
air entrained
in liquids.
Safety
Shut-Off
Valve
(Gas)
Union
Suppressed-Zero Range
Non-Corrosive Dry Gases and Liquids
Safety Shut-Off
Valve (Liquid)
Elevated Zero-Range
Non-Corrosive Dry Gases and Liquids
Model 340A
Sediment Chamber
and Drain Valve.
Used to collect solids
in liquid suspension
or moisture carried
with non-condensing
gas.
Shut-Off
Valve
Union
Safety
Shut-Off
Valve
(Gas)
X03040S0
Safety Shut-Off
Valve (Liquid)
OR
Model 340A
Safety
Shut-Off
Valve
(Gas)
OR
Safety Shut-Off
Valve (Liquid)
Elevated Zero-Range Wet Gases (Non-Condensing)
and Liquids with Solids in Suspension
Dripleg with Drain Valve,
Used to collect solids in
liquid suspension or
moisture carried with
non-condensing gases.
Shut-Off
Valve
Union
Suppressed Zero-Range Wet Gases (Non-Condensing)
and Liquids with Solids in Suspension
FIGURE 4-3 Absolute or Gauge Pressure Measurement Piping
May 1998
4-7
INSTALLATION
UM340-1
Safety
Shut-Off
Valve
Filling Tee with
Hex Plug
Model 340A
Shut-Off
Valve
X03041S0
Drain
Valve
To Drain
FIGURE 4-4 Steam Service, Below the Line Mounting
4-8
May 1998
UM340-1
INSTALLATION
Non-Condensing
Atmosphere
Dry Line Leg
Flange on High
Pressure Side
Max. Level
Span
H1
Low Pressure
Side Vented to
Atmosphere
Min. Level
Max. Level
Span
H1
Min. Level
Blowdown
Valve
Closed Tank, Non-Condensing Atmosphere, Level Measurement
Open Tank, Level Measurement
Notes:
Filled
Reference
Line
Max. Level
Blowdown
Valve
Condensing
Atmosphere
2. Open or vented vessels require only a high pressure
(HP) connection.
Span
H2
3. High pressure line senses static pressure plus level.
Low pressure line senses pressure only. The two
pressures oppose each other, canceling the effect
of static pressure.
H1
Min. Level
Flange on High
Pressure Side
Low Pressure
Side
Plugged
Filling "T"
Closed Tank, Condensing Atmosphere, Level Measurement
X03043S0
1. Transmitter may be mounted at or below the
minimum level to be measured.
4. Distance "X" can be any distance since both high
and low pressure lines have equal and opposite
forces which cancel the forces created by this
distance.
5. Entire length of low pressure pipe is kept full of
condensate to act as a reference.
6. See Appendix D for information on calculating
suppressed and elevated zero ranges.
FIGURE 4-5 Open and Closed Tank Level Measurement,
Flange Mounted Differential Transmitters
May 1998
4-9
INSTALLATION
UM340-1
4.3.4 Transmitter Operating Mode and Network Type
A transmitter outputs either an analog current or an equivalent digital signal, depending upon the selected
operating mode. The operating mode also determines the type of network (Point-to-Point or Multi-Drop) to
be installed, as shown in Table 4.1 and the following subsections.
TABLE 4-1 Operating Mode and Network
OPERATING MODE
NETWORK TYPE
NETWORK FIGURE(S)
Analog
Point-to-Point
4-6, 4-7, and 4-8
Digital
Multi-Drop
4-9
4.3.4.1 Analog Mode
When a transmitter is configured for analog mode operation, the following statements apply.
•
The transmitter outputs a 4-20 mA signal for input to devices such as controllers and recorders.
•
A Point-to-Point network is used comprising a transmitter, Primary/Secondary Master, and other nonsignaling devices. The transmitter polling address is 0 (zero).
–
Point-to-Point networks are shown in Figures 4-6, 4-7, and 4-8.
•
The optional Smart Display can be used for local indication of transmitter output.
•
Each transmitter is factory configured for analog mode unless otherwise ordered. The polling address is
set to zero (0).
•
A HART Communicator is used for configuration, diagnostics, and reporting the current process
variable.
4-10
May 1998
UM340-1
INSTALLATION
250
See Note 2
Controller,
Recorder,
Indicator, or
other 1-5 Vdc
Device
See Note 1
System Power
Supply
Network
Junction
Model 340
Terminals
See Note 5
See Note 6
+
_
+
_
TIE
_
See Note 3
+
I
O
Network for Non-Hazardous Locations
Non-Hazardous
Location
Hazardous
Location
250
See Note 2
I
O
Controller,
Recorder,
Indicator, or
other 1-5 Vdc
Device
See Note 1
See Note 6
+
_
+
_
TIE
System Power
Supply
+
See Note 4
_
See Note 3
Model 340
Terminals
See Note 5
Network for Hazardous Locations
Notes:
1. The System Power supply is shown separate from the host input device. In practice, it may be part of
the host input device. The host input device can be either a HART or non-HART signaling device, a
Primary Master or Secondary Master.
2. Network resistance equals the sum of the barrier resistances and the current sense resistor.
Minimum value 250 Ohms; maximum value 1100 Ohms.
3. Connect The HART Communicator as shown in Figure 2-2 for hazardous or non-hazardous locations.
The HART Communicator is a non-polar device.
4. Supply and return barriers shown. Interconnect all cable shields and ground only at the barriers.
5. For access to Model 340 terminals, remove enclosure cap.
6. Maximum loop cable length calculated by formula in Section 4.3.
X03044S1
FIGURE 4-6 Point-To-Point Network (Analog Mode)
May 1998
4-11
INSTALLATION
UM340-1
Non-Hazardous
Location
Hazardous
Location
250
See Note 1
See Note 6
20
I
O
Model 353/354
Terminals
See Note 4
21
_
+
TIE
5
6
GND
See Note 3
See Note 2
Model 340
Terminals
See Note 5
Common Ground Bus
Notes:
1. Network resistance equals the sum of the barrier resistances and the current sense resistor.
Minimum value 250 Ohms; maximum value 1100 Ohms.
2. Connect the HART Communicator as shown in Figure 2-2 for hazardous or non-hazardous locations.
The HART Communicator is a non-polar device.
4. Model 353 or Model 354 terminal assignments:
20 - Analog Input 1 (AIN1+)
21 - Analog Input Common (AINC)
5 - Two-Wire Transmitter Power (+26 Vdc)
6 - Station Common
GND - Case/Safety Ground
See User's Manual UM353-1 or User's Manual UM354-1 for details.
5. For access to Model 340 terminals, remove enclosure cap.
MG001430
3. Supply and return barriers shown. Interconnect all cable shields and ground only at the barriers.
6. Maximum loop cable length calculated by formula in Section 4.3.
FIGURE 4-7 Model 353/354 to Model 340 Connections (Analog Mode)
4-12
May 1998
UM340-1
INSTALLATION
Current Sense
Resistor,
See Note 3
Non-Hazardous
Location
Hazardous
Location
Note 6
+
Power
Supply,
Note 2 _
Model 340
Terminals,
Note 1
+
Network
Junction
X03063S0
HART Communicator
See
Note 7
TIE
Note 4
I
O
_
Note 5
_
Pneumatic
Signal
To Valve
+
Model 773
I/P Transducer
Notes:
1. Model 340 configured as a Transmitter-Controller (Controller Function Block ON).
TIE terminal isolated from ground and from plus (+) and minus (-) terminals.
For access to Transmitter terminals, remove enclosure cap closest to the electrical conduit entrances.
2. The System Power Supply may be part of a host input device or a separate device as shown.
3. Network resistance equals the sum of the barrier resistances and the current sense resistor.
Minimum value 250 Ohms; maximum value 1100 Ohms.
4. Supply and return barriers shown.
5. Interconnect all cable shields and ground only at the barriers.
6. Maximum loop cable length calculated by formula in Section 4.3.6.
7. HART Communicator is a non-polar device.
Before connecting in a hazardous location, check Communicator nameplate for approvals.
FIGURE 4-8 Wiring for Controller Operation
May 1998
4-13
INSTALLATION
UM340-1
4.3.4.2 Digital Mode
When a transmitter is configured for digital mode operation, the following statements apply.
•
The process variable is transmitted digitally. The analog output of each transmitter is “parked” at 4
mA.
•
Employs a Multi-Drop network. See Figure 4-9.
•
The optional Smart Display can be used for local indication of transmitter output.
The number of allowable network elements is:
–
–
Primary and Secondary Masters - 1 each
Transmitters - 1 to 15
•
The HART communication source can be a Primary or Secondary Master. A Primary Master can be
used for data acquisition, maintenance, or control purposes. A Secondary Master, the HART
Communicator, for example, may be used for configuration, diagnostics, and reporting current process
variable.
•
Place the transmitter in the digital mode by assigning it a polling address (1 to 15) when configuring
the Transmitter ID block with the HART Communicator (see Section 6).
•
Each transmitter must have a unique address.
4.3.5 Power Supply Requirements
A power supply is needed to power the transmitter(s). The power supply can be:
•
A separate stand-alone supply capable of powering several transmitters. It can be mounted in a control
room or in the field. Follow the power supply manufacturer’s recommendations with regard to
mounting and environmental considerations.
•
Located in a controller (such as a Primary Master) or
other station able to safely provide additional operating
current and meet the power supply specifications of
Section 9.3.
The total Network Resistance is the sum of the Current Sense
Resistance, end-to-end Barrier Resistance (if used), wire
resistance, and any other resistances in the loop. The minimum
Network Resistance (see Glossary) required to support HART
communications is 250Ω. The maximum resistance is 1100Ω.
4-14
750
X03047S1
Network Resistance, Ohms
Determine needed power supply output voltage by calculating
the Network Resistance and consulting the adjacent figure. It
shows the minimum power supply voltage needed for the
calculated Network Resistance.
1100
500
Operating
Region
250
0
10
15
30
42
Power Supply, Vdc
May 1998
UM340-1
INSTALLATION
See Note 4
Non-Hazardous
Location
250
See Note 2
I
Network
Primary
Master
See Note 1
O
System
Power Supply
_
+
+
_
+
_
See Note 5
_
+
TIE
Model 340
Transmitter 1
See Notes 3 & 6
Hazardous
Location
TIE
Model 340
Transmitter 2
See Notes 3 & 6
_
+
TIE
Model 340
Transmitter 15
See Notes 3 & 6
Notes:
1. The System Power Supply is shown separate from the host input device. In practice, it may be part of the
host input device. The host input device can either be a HART or non-HART signaling device, a Primary
Master or Secondary Master.
2. Network resistance equals the sum of the barrier resistances and the current sense resistor.
Minimum value 250 Ohms; maximum value 1100 Ohms.
3. A maximum of 15 transmitters may be connected. All must be configured for digital mode.
4. Connect the HART Communicator as shown in Figure 2-2 for hazardous or non-hazardous locations.
The HART Communicator is a non-polar device.
5. Supply and return barriers shown. Interconnect all cable shields and ground only at the barriers.
6. For access to Model 340 terminals, remove enclosure cap.
X03046S1
FIGURE 4-9 Multi-Drop Network (Digital Mode)
May 1998
4-15
INSTALLATION
UM340-1
4.3.5.1 Point-to-Point Network
The graph in Section 4.3.5 defines an analog mode transmitter’s operating region for the allowable ranges
of supply voltage and network resistance. Perform the following calculations to ensure that the power
supply output voltage permits the transmitter to remain within the indicated operating range.
1. Calculate the minimum power supply output voltage.
The minimum network power supply voltage requirement is a function of Network Resistance and full
scale current (20 mA), and is calculated by the following formula:
Minimum Power Supply Output Voltage = 10 volts + (0.02 × Network Resistance in ohms)
Power supply output voltage must be greater than the calculated value. The minimum voltage across
the input terminals of a transmitter is 10 volts.
2. Calculate the maximum power supply output voltage.
The maximum network power supply voltage is a function of Network Resistance and zero scale
current (4 mA), and is calculated by the following formula:
Maximum Power Supply Output Voltage = 42 volts + (0.004 × Network Resistance in ohms)
Power supply output voltage must be less than the calculated value. The maximum voltage permitted
across the input terminals of a transmitter is 42 volts.
4.3.5.2 Multi-Drop Network
Perform the following simple calculations to ensure that the power supply output voltage permits the
Transmitter to remain within its operating range.
1. Calculate the minimum power supply output voltage.
Minimum network power supply voltage is a function of Network Resistance and the total current draw
of all transmitters in the network, and is calculated by the following formula:
Minimum Supply Output Voltage = 10 volts + [(0.004 × number of transmitters on Network) × (Network Resistance)]
Power supply output voltage must be greater than the calculated value. The minimum voltage across
the input terminals of a transmitter is 10 volts.
2. Calculate the maximum power supply output voltage.
Maximum network power supply voltage is a function of Network Resistance and total current draw of
all the transmitters in the network, and is calculated by the following formula:
Maximum Supply Output Voltage = 42 volts + [(0.004 × number of transmitters on Network) x (Network Resistance)]
Power supply output voltage must be less than the calculated value. The maximum voltage permitted
across the input terminals of a transmitter is 42 volts.
The maximum number of transmitters that can be connected to a Multi-Drop Network is 15. Each
transmitter is “parked” in a low current draw mode (4 mA) to conserve power. Ensure that the network
power supply is capable of sourcing the total current consumed by the number of transmitters on the
network.
4-16
May 1998
UM340-1
INSTALLATION
4.3.6 Cable Capacitance and Maximum Length
A cable length calculation is necessary when HART communication is to be employed. Cable capacitance
directly affects maximum network length.
4.3.6.1 Cable Capacitance
Cable type, conductor size, and recommended cable model numbers are stated in Section 9.3.3 Two-Wire
Cable.
Cable capacitance is a parameter used in the calculation of the maximum length of cable that can be used
to construct the network. The lower the cable capacitance the longer the network can be. Manufacturers
typically list two capacitance values for an instrumentation cable:
1. Capacitance between the two conductors.
2. Capacitance between one conductor and the other conductor(s) connected to shield. This capacitance is
the worst case value and is to be used in the cable length formula.
4.3.6.2 Maximum Cable Length Calculation
The maximum permissible single-pair cable length is 10,000 feet (3000 meters) or less as determined by
the following formula:
65,000,000
Cf + 10,000
L=
–
R×C
–

C
Formula Definitions:
L: The maximum total length of cable permitted to construct the network. L = feet when C is in pF/ft;
L = meters when C is in pF/meter.
R: The Network Resistance which is the ohmic sum of the current sense resistance and barrier
resistance (both return and supply), if any, in the network and the resistance of the wire.
C: Cable capacitance per unit length between one conductor and the other conductor connected to the
shield. C may be in pF/ft or pF/meter.
Cf: Total input terminal capacitance of field instruments; the Primary Master is excluded. Cf is given
by the following formula:
Cf = (sum of all Cn values) x (5000)
Where Cn is an integer (e.g., 1, 2, 3) corresponding to the input terminal capacitance of a Field
Instrument. Cn values are determined as follows:
May 1998
4-17
INSTALLATION
FIELD INSTRUMENT CAPACITANCE
UM340-1
Cn VALUE
Less than 5000 pF
1
5000 pF to less than 10000 pF
2
10000 pF to less than 15000 pF
3
15000 pF to less than 20000 pF
4
20000 pF to less than 25000 pF
5
For field instruments without Cn values, use Cn = 1
Example Calculation:
Assume a network consists of two field instruments (both Cn = 1).
Let R = 250Ω, C = 40 pF/ft, Cf = (1 + 1) x 5000 = 10,000
65,000,000
10,000 + 10,000
Then L = ––––––––– – ––––––––––––– = 6000 feet (1800 meters)
(250)(40)
40
4.3.7 Network Junctions
A network junction is shown in Figure 4-8. It is a wiring junction installed at a convenient point in the loop
to facilitate wiring, testing, and troubleshooting. Typically the junction is a conventional terminal block
mounted on a panel with a protective cover, cabinet, or junction box to enclose and protect wiring
terminals.
Multiple junctions can be installed to provide field access terminals for the connection of a HART
Communicator. Note the following:
•
Network with barriers – Locate a junction anywhere along the network in the non-hazardous area.
•
Network without barriers – A junction may be located anywhere along the network between the power
supply and transmitter.
•
A junction should be a simple electrical series connection containing NO repeaters or other devices
(active or passive) that can degrade HART communications.
4-18
May 1998
UM340-1
INSTALLATION
4.3.8 Safety Barriers
Installed safety barriers must comply with the following:
•
Locate intrinsic safety barriers between the system power supply (e.g., Primary Master, if used)
residing in the non-hazardous area and the transmitter(s) in the hazardous area.
•
Combined or separate supply and return barriers may be used.
•
For an intrinsically safe application, the DC voltage applied to the safe side of the barrier must be 0.6
Vdc less than the rated barrier working voltage.
•
An active supply barrier must be operated within its specified input working voltage.
•
Barrier shunt impedance to ground to the HART range of frequencies (500 Hz to 2500 Hz) shall not be
less than 5000Ω.
•
Barrier end-to-end resistance, stated by the manufacturer, is used in calculating the maximum Network
cable length and minimum and maximum network voltages.
•
The barrier shall be installed and wired in accordance with the manufacturers instructions.
•
Refer to Appendix B for a list of barriers tested for use with typical HART Primary Masters.
4.3.9 Connection of Miscellaneous Hardware
Miscellaneous non-signaling hardware (e.g., recorders, current meters) may be connected to a Point-toPoint network in accordance with the following list.
IMPORTANT
No non-signaling hardware (meters or measuring devices) may be connected to a
Multi-Drop network since the transmitters, in this mode, do not output an analog
process variable.
•
Miscellaneous hardware may be series or parallel connected to the network according to its function.
•
Miscellaneous hardware must be passive two-terminal devices.
•
Miscellaneous hardware may not generate any type of noise or signals, other than noise that is inherent
in resistive components.
•
Individual miscellaneous hardware must meet the following requirements:
– Capacitance to ground ........................ 50 pF maximum
–
Resistance to ground............................1 MΩ minimum
–
Impedance if series connected ................ Less than 10Ω
–
Impedance if parallel connected........Greater than 50kΩ
May 1998
4-19
INSTALLATION
UM340-1
The maximum number of miscellaneous devices per network is 16. The combined electrical characteristics
may not exceed the following:
–
Maximum capacitance to ground ...................... 800 pF
–
Minimum resistance to ground ..........................62.5kΩ
–
Maximum series impedance .................................160Ω
–
Minimum parallel impedance .............................3125Ω
4.3.10 Shielding and Grounding
GROUNDING
Ground the transmitter’s enclosure housing through a 16 AWG (or larger) copper wire to a low resistance
ground, such as a nearby metal cold water pipe. A screw is provided in the side of the housing for this
purpose. The ground wire should be installed even though the housing is often grounded through the
electrical conduit or, in some transmitter models, through the process connections and piping.
SHIELDING
Shielded loop cable is recommended. The preferred method of grounding that shield is shown in Figures 4-6
through 4-9.
Ground the cable shield at one point. Multiple grounds can cause signal error and poor HART
performance. The location of the ground connection is often determined by the installation environment
(hazardous or non-hazardous) or by the requirements of a regulating agency.
The following grounding practices are field proven and will reduce magnetically coupled interference.
Select the appropriate option from the three bulleted items below for the installation at hand.
•
Hazardous location - ground the shield(s) only at the barrier(s) or as recommended on the appropriate
control (installation) drawing and by the certifying agency.
•
Non-hazardous location - ground the shield at the network power supply.
•
4-20
•
Ground the cable shield to the power supply ground terminal. Do not connect the cable shield at the
transmitter.
•
If a network junction box is used, splice the input and output cable shields and isolate them from
ground.
Non-hazardous location - ground the shield at the Transmitter
•
Ground the cable shield at the ground screw inside the transmitter’s signal terminal compartment.
•
Power supply (+) and (-) connections must be floated.
•
If a network junction box is used, splice input and output shields and isolate them from ground.
May 1998
UM340-1
INSTALLATION
4.4 MECHANICAL INSTALLATION, MODELS 340D, A, AND G
This section describes the mechanical installation of a transmitter and the installation of electrical conduit
for wiring. Transmitter dimensions are given in Figures 9-1, 9-2, and 4-14 and Table 4-2. Related
mounting information for optional mounting bracket kits is provided in Figures 4-10, 4-11, 4-12, and 4-13.
Table 1-1 cross-references model numbers and figure numbers.
Mount a transmitter in any position (orientation). The mounting position can cause a zero shift, however,
any zero shift is simply calibrated out with the transmitter installed in its final mounting position. Refer to
Section 7 Calibration and Maintenance for details.
Be sure to allow sufficient clearance for:
•
Installation of impulse piping
•
Installation of conduit
•
Removal of the enclosure end cap
•
Viewing of the optional Smart Display (enclosure can be rotated)
4.4.1 Pipe Mounting, Models 340D, A, and G
A transmitter can be mounted to a vertical or horizontal 2-inch pipe using an optional mounting bracket kit;
kit part numbers are given in Section 9.2.
1. Refer to the appropriate figure and determine orientation of bracket and transmitter on selected pipe.
Model 340D or 340A or G with tantalum diaphragm, 2" Pipe Mount Bracket and
316SS Bracket................................................................................................................... Figure 4-10
Model 340A or G, 2" Pipe Mount Bracket and 316SS Bracket ........................................... Figure 4-11
Model 340D or Model 340A or G with tantalum diaphragm, Universal Bracket .................. Figure 4-12
Model 340A or G, Universal Bracket ................................................................................. Figure 4-13
2. Fasten transmitter to mounting bracket. Perform one of the following depending upon transmitter model
number and bracket at hand.
Model 340D, 2" Pipe Mount Brackets
1) Refer to Figure 4-10 and align a pair of holes in the transmitter end caps (manifold) with either of
the two pairs of elongated holes in the bracket.
2) Using the two supplied 7/16-20 x 3/4 bolts, secure the transmitter to the bracket.
May 1998
4-21
INSTALLATION
UM340-1
Models 340A and G, 2" Pipe Mount Brackets
1) Note direction of pipe run, then refer to Figure 4-11 and orient the transmitter against the
mounting bracket.
2) Install the supplied U-bolt, lockwashers, and nuts to secure the transmitter to the bracket.
Model 340D or Model 340A or G with Tantalum Diaphragm, Universal Bracket
1) Refer to Figure 4-12 and align a pair of holes in the transmitter end caps (manifold) with either
of the two pairs of elongated holes in the bracket. If the transmitter has a Smart Display, be
sure it can be viewed as this bracket limits enclosure rotation.
2) Using the two supplied 7/16-20 x 3/4 bolts, secure the transmitter to the bracket.
Models 340A and G, Universal Bracket
1) Refer to Figure 4-13 and orient the transmitter against the mounting bracket.
2) Install the Adapter Bracket using the supplied screws.
3) Using the supplied U-bolt, lockwashers, and nuts, install the transmitter to the bracket.
3. Fasten mounting bracket to pipe.
1) At the selected location on the pipe and in the desired orientation, place the pipe groove side of the
mounting bracket against the desired part of the pipe surface.
As necessary, loosen the enclosure rotation set screw and rotate the enclosure to clear the pipe or
provide for viewing an optional Smart Display.
2) Slip the supplied U-bolt around the pipe and through one of the two pairs of mounting holes in the
bracket.
3) Place a supplied washer and hex nut on each end of the U-bolt and hand tighten the nuts. Rotate
the bracket around the pipe to place the transmitter in the desired position, then secure the bracket
to the pipe. Do not over tighten nuts.
4. Reposition the optional Smart Display as necessary. Refer to Section 4.6.1.
4-22
May 1998
UM340-1
INSTALLATION
4.12
(104.7)
0.88
(22.4)
Notes:
1. Includes 2" Pipe Mount 316SS
Bracket.
Vent/Drain Plug
Clearance Hole,
4 places
Standard mounting bracket is for
Model 340D and Models 340A
and G with tantalum diaphragms.
9.62
(244.3)
2. Dimensions are in inches
(millimeters).
U-Bolt Pipe
Mounting Hole,
0.34 (8.64)
Dia., 4 places
3. Diaphragm plane for transmitter
in adjacent orientation. Supplied
for anticipating position induced
zero-shift.
5.20
(132.1)
Transmitter
Mounting Hole,
4 places
2.32
(58.9)
5.46
(138.7)
1.75 (44.4)
Req'd to
Remove Cap
4.39
(111.5)
0.50
(12.7)
0.75 (19.1)
3.50
(88.9)
Diaphragm
Plane, See
Note 3
5.21
(132.3)
10.76
(273.3)
6.43
(163.3)
H
Enclosure Rotation
Set Screw
Supplied U-Bolt,
Lockwashers,
and Nuts
Diaphragm
Plane,
Edge View,
See Note 3
1/4 NPT
Process Connection
on End Caps
Mount to Bracket with
7/16"-20 Bolts and
Lockwashers, 4 places
3.60
(91.4)
2.32
(58.9)
X03048S2
FIGURE 4-10 2” Pipe Mount Bracket, Model 340D (See Note 1)
May 1998
4-23
INSTALLATION
UM340-1
4.12
(104.6)
0.88
Transmitter
(22.4)
Mounting
Flanges and
U-Bolt Mounting
Holes
Notes:
1. Includes 2" Pipe Mount 316SS Bracket.
See Figure 4-10 for Model 340A or G
with tantalum diaphragms.
U-Bolt Pipe
Mounting Hole,
0.34 (8.6)
Dia, 4 places
8.06
(204.7)
2. Dimensions are in inches (millimeters).
3. Diaphragm plane for transmitter in
adjacent orientation.
2.32
(58.9)
5.46
(138.7)
4.39
(111.5)
1.75 (44.4)
Req'd to
Remove Cap
0.50
(12.7)
0.75 (19.1)
3.50
(88.9)
6.51
(165.4)
Diaphragm Plane,
Edge View,
See Note 3
Supplied U-Bolt,
Lockwashers,
and Nuts
10.77
(273.6)
Enclosure Rotation
Set Screw
2.32
(58.9)
1/2 NPT
Process Connection
4.12
(104.6)
5.29
(134.4)
2.52
(64.0)
X03049S2
FIGURE 4-11 Pipe Mount Bracket, Models 340A and G (See Note 1)
4-24
May 1998
UM340-1
INSTALLATION
4.4.2 Flat Surface Mounting, Models 340D, A, and G
The transmitter can be mounted to a flat surface using the Universal Mounting Bracket kit and user
supplied 5/16-inch bolts.
Refer to either Figure 4-12 or 4-13 and the following for mounting guidance:
1. Fasten the mounting bracket to a flat surface.
1) Determine transmitter location and orientation. Note: For Model 340D or Model 340A or G with
tantalum diaphragm, if the transmitter has a Smart Display, be sure it can be viewed as this
bracket limits enclosure rotation.
2) Lay out the mounting hole pattern on the selected surface. Drill four mounting holes in the wall or
plate (typically, 0.344-inch diameter to accept 5/16-inch bolts).
3) Consider the thickness of the mounting surface and the selected mounting hardware (e.g., screw
anchors, nuts and washers) in determining the required length of the mounting bolts.
4) Place the pipe-groove side of the bracket against the mounting surface site and align the bracket
and surface mounting holes. Install the bracket with user supplied 5/16-inch bolts, washers, and
hex nuts.
2. Fasten the transmitter to the Mounting Bracket; refer to Section 4.4.1, step 2.
As necessary, loosen the enclosure rotation set screw and rotate the enclosure for best viewing of the
optional Smart Display.
3. Reposition the optional Smart Display as necessary. Refer to Section 4.6.1.
May 1998
4-25
INSTALLATION
UM340-1
Supplied U-Bolt,
Lockwashers,
and Nuts
6.00
(152.4)
Vent/Drain Plug
Clearance Holes
4 Holes
4.32
(109.7)
4.17
(105.9)
Pipe Mounting
OR
2.16
(54.9)
2.82
(71.6)
1.41
(35.8)
User Supplied
Hardware
.34 (8.7) Dia,
4 Holes
2.82
(71.6) 1.41
2.10
(35.8)
(53.3)
Wall Mounting
Mount to Bracket
with 7/16"-20 Bolts
and Lockwashers,
4 places
10.30
(261.6)
H
Diaphragm
Plane,
Edge View
Notes:
1. Also shows Models 340A and 340G
with tantalum diaphragm.
2. Dimensions are in inches (millimeters).
0.75
(19.1)
6.79
(172.5)
5.09
(129.3)
Diaphragm
Plane
X03050S2
FIGURE 4-12 Universal Mounting Bracket, Model 340D (See Note 1)
4-26
May 1998
UM340-1
INSTALLATION
Adapter
Bracket
6.00
(152.4)
Supplied U-Bolt,
Lockwashers,
and Nuts
1/4"-20 x 1/2"
Round Head
Screws,
4 places
Mounting
Bracket
Pipe Mounting
4.17
(105.9)
OR
4.16
(105.7)
0.34 (8.7) Dia,
4 Holes
2.10
(53.3)
Supplied U-Bolt,
Lockwashers,
and Nuts
2.82
(71.6)
2.08
(52.8)
2.82
(71.6)
1.41
(35.8)
User Supplied
Hardware
1.41
(35.8)
Wall Mounting
Adapter Bracket
X03051S2
Notes:
Diaphragm
Plane,
Edge View
Diaphragm
Plane
1. For a Model 340A or 340G with tantalum
diaphragms, see Figure 4-12.
2. Dimensions are in inches (millimeters).
FIGURE 4-13 Universal Mounting Bracket, Models 340A and 340G (See Note 1)
May 1998
4-27
INSTALLATION
UM340-1
4.4.3 Direct Mounting to Process, Model 340D
The transmitter can be interfaced to the process through a
two- or three-valve manifold and supported by the piping
connections (3-inch nipples) if mounted directly at the point
of measurement.
Transmitter process connections are on 2.13-inch (54 mm)
centers to allow direct mounting (bolting) to a manifold
with the same spacing. Each transmitter process connection
has two tapped 7/16-20 mounting holes and a 1/4 NPT
tapped pressure inlet.
Process orifice flanges with standard 2.13-inch spacing
permit a transmitter and two- or three-valve manifold
combination to be direct mounted.
Nipple Mount for
Liquid Service
Orifice
Flanges
Low
Pressure
Side
Flow
High
Pressure
Side
3-Valve
Manifold
Model 340D
X03054S0
The procedure for mounting a transmitter to a two- or three-valve manifold, and the manifold to the orifice
flanges, is covered by the installation instructions supplied by the manifold manufacturer.
The following is a guide and may need to be modified for some installations. TFE/PTFE tape is the
recommended thread sealant for process connections at the transmitter.
1. If installed, remove process connection blocks from the transmitter’s end caps (process manifold).
2. Press supplied O-ring seals into the grooves in the face of the two- or three-valve manifold and bolt the
transmitter end caps to the transmitter side of the two- or three-valve manifold.
3. Thread ½" nipples of 3 inches (or less) length into the high- and low-pressure ports of the orifice
flanges. Thread sealant must be used.
4. Thread the process connection blocks directly onto the nipples. Thread sealant must be used. The ½
NPT tapped hole in a process connection block is off center to accommodate 2-inch or 2.25-inch
centers (Figure 9-1). For 2.13" pipe centers, the tapped holes should be offset to the right side.
5. Place the supplied TFE/PTFE gaskets on the connection blocks and bolt them to the manifold.
6. Reposition the optional Smart Display as necessary. Refer to Section 4.6.1.
4-28
May 1998
UM340-1
INSTALLATION
4.5 MECHANICAL INSTALLATION, MODEL 340F
The Model 340F Transmitter can be flange mounted directly to the point of measurement on a vessel to
provide a liquid level measurement. The flange-mounted diaphragm is factory assembled to the highpressure side of the transmitter.
Figure 4-14 shows a typical Model 340F in an ANSI and metric flange. Table 4-2 includes the following
mounting information:
•
Flange thickness
•
Flange diameter and pressure rating
•
Number of flange mounting holes
•
Flange mounting hole diameter
•
Flange bolt circle diameter
Refer to Figure 4-14 and Table 4-2 when performing the following procedure:
1. Determine needed bolt length. The user must supply mounting bolts, nuts, and washers. Bolt length is
determined by the combined thickness of the flange mounted on the vessel and the transmitter’s flange.
2. As necessary, loosen the enclosure rotation set screw and rotate the enclosure for clearance and best
viewing of the optional Smart Display.
3. Bolt the transmitter’s flange to the vessel’s flange. Four mounting positions (90-degree increments) are
possible with 2-inch flanges and eight positions (45-degree increments) are possible with 4-inch
flanges.
4. Reposition the optional Smart Display as necessary. Refer to Section 4.6.1.
May 1998
4-29
INSTALLATION
UM340-1
5.46
(138.7)
4.39
(111.5)
0.50
(12.7)
7/16"-20
Tapped Hole,
8 Places
3.50
(88.9)
"ED"
5.20
(132.1)
4.45
(113.0)
Vent/
Drain
Plug
1.22
(31.0)
1/4 NPT
Process
Connection
Bolt Circle
"BC"
Diaphragm
Plane,
Edge View
Note 2
"L"
"RF"
Flange Dia
"D"
Enclosure
Rotation
Set Screw
3.60
(91.4)
"T"
2.50
(63.5)
5.78
(146.8)
Vent/Drain Plug
(Side Vent Options Top, Bottom, or Both)
X03052S3
Notes:
1. Dimensions are in inches (millimeters). See table in text for dimensions that
depend upon model number.
2. Diaphragm plane for transmitter in adjacent orientation.
FIGURE 4-14 Flange Mounted Transmitter, Model 340F
4-30
May 1998
UM340-1
INSTALLATION
TABLE 4-2 Flange and Extension Dimensions
A. Flange Dimensions
SIZE
2" – 150#
2" – 300#
3" – 150#
3" – 300#
4" – 150#
4" – 300#
50MM –
10/16 BAR
50MM –
25/40 BAR
80MM –
10/16 BAR
80MM –
25/40 BAR
100MM –
10/16 BAR
100MM –
25/40 BAR
DIM
“D”
6.00
(152.40)
6.50
(165.10)
7.50
(190.50)
8.25
(209.55)
9.00
(228.60)
10.00
(254.00)
6.50
(165.00)
6.50
(165.00)
7.87
(200.00)
7.87
(200.00)
8.66
(220.00)
9.25
(235.00)
DIM
“BC”
4.75
(120.65)
5.00
(127.00)
6.00
(152.40)
6.625
(168.28)
7.50
(190.50)
7.875
(200.03)
4.92
(125.00)
4.92
(125.00)
6.30
(160.00)
6.30
(160.00)
7.09
(180.00)
7.48
(190.00)
DIM
“T”
0.75
(19.05)
0.88
(22.23)
0.94
(23.81)
1.13
(28.58)
0.94
(23.81)
1.25
(31.75)
0.71
(18.00)
0.79
(20.00)
0.79
(20.00)
0.94
(24.00)
0.79
(20.00)
0.94
(24.00)
DIM
“ED”
1.95
(49.53)
1.95
(49.53)
2.81
(71.37)
2.81
(71.37)
3.70
(93.98)
3.70
(93.98)
Consult
Factory
DIM
“RF”
BOLT
DIA
5/8
NO. OF
BOLTS
4
5/8
8
5/8
4
3/4
8
5/8
8
3/4
8
M16
4
M16
4
M16
8
M16
8
M16
8
M20
8
0.06
(1.58)
0.12
(3.00)
FLANGE
PER
ANSI
B16.5
DIN
2526
TYPE
C
B. Extension Length
DIM
“L”
0
(0.00)
2.00
(50.80)
4.00
(101.60)
6.00
(152.40)
Notes:
1. Dimensions are in inches (millimeters).
2.
End cap can be rotated 180º for top or bottom vent/drain, side vent option only.
May 1998
4-31
INSTALLATION
UM340-1
4.6 MECHANICAL INSTALLATION, ALL MODELS
The following subsections describe installation and orienting of the Smart Display and installation of
electrical conduit and cables.
4.6.1 Smart Display Installation, Repositioning, and Removal
This section describes field installation and orientation of a Smart Display for easiest viewing. The display
can be rotated in increments of 90 degrees.
Install a Smart Display:
1. Turn off power to the transmitter.
2. Remove the enclosure cap by turning counterclockwise.
3. Remove the Smart Display from its packaging.
4. While holding the Smart Display in front of the transmitter enclosure, rotate it in quarter turns to find
the viewing position where reading is easiest. (Four positions, 90 degrees apart, are possible.)
5. Remove 2 screws at the perimeter of the electronics module inside the transmitter enclosure. Insert
these screws in the Smart Display so that the screws align with the holes in the electronics module
(Figure 4-15).
6. Bring the Smart Display close to the transmitter until the screws can be inserted loosely into the
Module. Without tightening the screws, press gently on the Smart Display until it engages connector J1
on the electronics module and can be pushed no further.
7. Use a flat blade screwdriver to tighten the screws fully.
8. Install an enclosure cap with sightglass by turning clockwise. Tighten cap to compress the O-ring.
Turn on power to the transmitter.
Rotate a Smart Display:
1. Turn off power to the transmitter.
2. Remove the enclosure cap with sightglass by turning counterclockwise.
3. Using a flat blade screwdriver, loosen the two screws holding the Smart Display. Lift the Smart
Display, loosening the screws further if necessary, until it can be separated from the electronics
module.
4. While holding the Smart Display in front of the transmitter enclosure, rotate it in quarter turns to find
the viewing position where reading is easiest. (Four positions, 90 degrees apart, are possible.)
5. Observe the positions of the holes in the electronics module inside the transmitter. Depending on the
mounting position chosen, it may be necessary to move the screws so they will line up with these holes.
4-32
May 1998
UM340-1
INSTALLATION
Original Orientation
Shown with Enclosure Cap Removed
Display Repositioned 180°
Electrical Entrance
Smart Display
PV
TOTAL
PB
%
ENG
PV
SP
SP
V
V
AM
AM
TOTAL
PB
%
ENG
Meter Mounting
Screw, Qty 2
Electrical Entrance
Notes:
Display Repositioned 90° CCW
1. Display can be rotated in 90° increments.
2. Remove enclosure cap for access to the Display.
3. Display plugs into J1 on Electronics Module.
PV
TOTAL
PB
%
ENG
SP
V
AM
Display Orientation Examples
Electronics Module,
Front View, Simplified
Loop Feedthrough,
2 places
J1 Mates with 1 of 4
Display Connectors
on back of Display
Board - which connector
depends upon Display
orientation.
Magnetic Switch Jumper,
Shown in Disable
Position
J1
U5
Model 340
Enclosure,
Top View
Display
Connector,
4 places
Sensor
Cable
P3
PV
TOTAL
PB
%
Electronics
Module
ENG
SP
V
AM
Smart
Display:
Front,
Back
Display Details, Exploded View
J1 and Mating
Display Board
Connector
Display Board
Top View, Sectioned
X03055S2
FIGURE 4-15 Smart Display Removal and Repositioning
May 1998
4-33
INSTALLATION
UM340-1
1. Bring the Smart Display close to the transmitter until the screws can be inserted loosely into the holes
in the electronics module. Without tightening the screws, press the Smart Display gently until it
engages connector J1 on the electronics module and can be pushed no further.
2. Use a flat blade screwdriver to tighten the screws fully.
3. Replace the enclosure cap by turning clockwise. Tighten cap to compress the O-ring. Turn on power to
the transmitter.
Remove a Smart Display:
1. Turn off power to the transmitter.
2. Remove the glass-faced enclosure cap by turning counterclockwise.
3. Using a flat blade screwdriver, loosen the two screws holding the Smart Display. Lift the Smart
Display, loosening the screws further if necessary, until it can be separated from the electronics
module.
4. Use the screws to secure the electronics module
5. Place the Smart Display in an electrostatic protective container.
6. Replace the enclosure cap by turning clockwise. Tighten cap to compress the O-ring. Turn on power to
transmitter.
4.6.2 Electrical Conduit and Cable Installation
All electrical conduit and all signal wires must be supplied by the user. Access to electrical terminals is
described in Section 4.6.2.3.
For conduit and cable routing, refer to user’s installation drawings. Installation of conduit and cabling
should follow the guidelines given below.
4.6.2.1 Conduit
•
Transmitter conduit inlets accept male conduit fittings. Refer to the transmitter’s nameplate and
Section 9.1 to determine whether conduit threads are ½-14 NPT or M20 x 1.5.
Seal ½ NPT fittings with TFE/PTFE tape; seal M20 fittings with a soft-setting sealing compound rated for
at least 105°C (221°F).
•
When routing conduit, avoid areas that might subject the conduit to chemical or physical abuse or
areas with high electromagnetic interference/radio frequency interference (EMI/RFI) conditions.
•
Install conduit for field wiring.
•
If a high humidity environment can exist and the transmitter is located at a low point in the conduit run,
install drain seals at the transmitter’s conduit inlets to prevent condensation from entering the
transmitter. See Figure 4-16.
•
Remove all sharp edges or burrs from conduit that may damage wires.
•
18 inches of flex conduit is recommended at each transmitter.
4-34
May 1998
UM340-1
INSTALLATION
Plug Unused
Entrance
Conduit for
Field Wiring
(DC Power)
Drain Seal
Install Conduit Seal: Crouse-Hinds
Type EYS or Equivalent
Plug Unused
Entrance
Conduit for
Field Wiring
(DC Power)
Conduit Drain
Explosion Proof
X03056S2
FIGURE 4-16 Conduit Drain and Explosion Proof Installations
4.6.2.2 Cables
•
Mark or tag each cable conductor as either LOOP (+) or LOOP (-) to ensure correct connection at the
transmitter.
•
Use pulling grips and cable lubricants for easier cable pulling. Pull cable through conduit into
transmitter terminal compartment.
•
Do not exceed the maximum permitted pulling tension on the cables. Maximum tension is normally
specified as 40% of the cable’s breaking strength.
•
Do not exceed the maximum conduit fill specified by the National Electric Code.
4.6.2.3 Access to Transmitter Terminal Compartment
1. Remove the enclosure cap closest to the electrical entrance by turning counterclockwise. A cap wrench
is needed to remove an enclosure cap from a CENELEC approved transmitter.
2. Replace the enclosure cap by turning clockwise.
May 1998
4-35
INSTALLATION
UM340-1
4.7 ELECTRICAL INSTALLATION
This section describes loop wiring for Point-to-Point and Multi-Drop networks. Refer also to Section 4.8
for installation in hazardous locations. Figure 4-17 shows typical conductor terminations.
WARNING
Electrical shock hazard. Remove electrical power from all
involved equipment, wires, and terminals.
4.7.1 Loop Wiring
The following should already have been completed:
•
Selection of either analog or digital operating mode and corresponding Point-to-Point or Multi-Drop
network; Section 4.3.4.
•
Selection of a power supply; Section 4.3.5.
•
Mechanical installation of transmitter(s) installed; either Section 4.4 or Section 4.5.
•
Pulling of loop cable through conduit and into terminal compartment; Section 4.6.2.
To connect the transmitter to the loop, perform the following steps.
1. Access the transmitter signal terminals by turning the enclosure cap nearest to the electrical entrance
counterclockwise.
2. Determine method of connection to transmitter signal terminals; see Figure 4-17 for typical connection
methods.
3. Strip loop cable and conductors. Install ring tongue or spring spade terminals for #6 screws and the
cable conductor gauge. If terminals will not be used, tin conductor ends and form a loop.
4. Connect the loop cable to the LOOP (+) and (-) terminals inside the transmitter’s enclosure. Refer to
Figures 4-6 through 4-9 for the needed connections for the type of network. Terminals will
accommodate wire sizes up to 16 AWG.
5. Reinstall the enclosure cap. Tighten cap to compress the O-ring.
6. If one of the two electrical conduit entrances in the housing is not used, it should be plugged. Refer to
the transmitter’s nameplate and Section 9 to determine whether entrance holes accept ½ NPT or M20 x
1.5 fittings.
Seal ½ NPT fitting with TFE/PTFE tape; seal M20 fitting with a soft setting sealing compound rated for at
least 105ºC (221ºF).
7. Ground the enclosure by installing a 16 AWG (or larger) copper wire between the enclosure ground
screw and a low resistance ground, such as a nearby metal cold water pipe.
4-36
May 1998
UM340-1
INSTALLATION
Display Board Lug for connecting HART Communicator.
Display Board terminal for connecting Point-To-Point or
Multi-Drop Network.
Notes:
1. Remove Enclosure Cap for
access to Terminals.
2. Stranded wire is recommended.
Terminal Screw
No. 6
Solid
Conductor
with Loop
Formed in
End of Lead
Stranded
Conductor
with Spring
Spade
Terminal
Stranded
Conductor
with Ring
Tongue
Terminal
X03057S0
FIGURE 4-17 Conductor Terminations
4.7.2 Transient Suppressor Option
When installing a transmitter with the integral transient suppressor option, perform the following additional
steps to ensure proper operation of the transient suppressor.
1. Install a 50-ohm quenching resistor in series with the loop when the transmitter is powered from a
power supply rated at above 0.5 A.
2. Ground the transmitter enclosure using either the external or internal grounding screw to prevent
damage or personal injury in the event of nearby lightning strikes. The recommended ground strap is 12
gauge stranded copper wire. Always ground transmitters according to the National Electrical Code
(ANSI C1-1971).
3. Ensure that the polarity of both the positive and negative terminal board terminals is POSITIVE with
respect to the transmitter enclosure.
4.8 HAZARDOUS AREA INSTALLATION
Drawings showing transmitter installation data for hazardous areas are located in Appendix B. Entity
parameters, barrier selection, and important wiring information are specified on these drawings. The
appendix also contains a list of tested barriers.
Before installing a transmitter in a hazardous area, check the nameplate and Sections 9.1 and 9.3 of this
manual for required approvals or certifications.
May 1998
4-37
INSTALLATION
UM340-1
Explosion-Proof Installation
If the installation is required to be explosion-proof as defined by the National Electrical Code, refer to a
current copy of the Code and the following:
•
User-supplied explosion-proof conduit seals (glands) are required on transmitter housing conduit
outlets and any installed junction boxes. See Figure 4-16.
•
Explosion-proof glands must provide a good seal. Apply a sealing compound around the sealing
surface if necessary.
•
Power wiring conduit entries at the transmitter must have a minimum of five threads fully engaged.
•
The enclosure cap must be installed and have a minimum of eight threads fully engaged with no
damaged threads permitted.
•
Go to Section 4.7 for wiring connections to the transmitter’s terminals. Refer to Appendix B for
hazardous area installation.
This completes the physical installation.
n
4-38
May 1998
UM340-1
POST-INSTALLATION CHECKOUT
5.0 POST-INSTALLATION CHECKOUT
This section provides guidelines to verify that the proper transmitter is installed, correctly wired, and
operational prior to placing the system in service. If the transmitter was not commissioned on the bench
prior to installation, refer to Section 3 before proceeding.
5.1 EQUIPMENT REQUIRED
•
User configuration data for transmitter(s) under test (see Appendix C)
•
HART Communicator (see Section 2 of this manual)
•
Laboratory grade digital multimeter (DMM); for calibrating the 4 to 20 mA output signal
Voltmeter Section
Accuracy ±0.01% of reading
Resolution 1.0 mV
Ammeter Section
Input impedance 10 MΩ
Accuracy ±0.1% of reading
Resolution ±1 µA
Shunt resistance 15Ω or less
5.2 INSTALLATION REVIEW
1. Note the model designation and certifications on the transmitter’s nameplate and compare to model
specified in user’s documentation (P&I drawing).
2. Refer to Section 9 to confirm that the correct model with the correct certifications has been installed.
Confirm that any needed hazardous area barriers have been installed and all other installation
requirements have been met.
3. Check all wiring for correct and secure connection. Refer to Section 4 of this manual and user’s
documentation for wiring diagrams.
4. Check wire runs to be sure wires are protected from abrasion or other damage, correctly supported,
and isolated from other signal or power wiring.
5. Check that a current sense resistor of the correct value has been installed.
6. Apply power to the power supply or other loop power source (e.g., controller). Use the DMM to check
power supply output voltage.
May 1998
5-1
POST-INSTALLATION CHECKOUT
UM340-1
5.3 EQUIPMENT CONNECTION
1. Connect the HART Communicator across a network junction, the current sense resistor, range resistor,
or the transmitter under test as shown in Figure 5-1. There is no connection polarity as the HART
Communicator is a non-polar device.
2. Connect a DMM in series with either loop wire; see Figure 5-1. Set the DMM to read 4-20 mA.
Jumper
See Note 2
_
Network
Junction
Digital
+ Milliammeter
+
Controller,
Recorder,
Indicator, or
other 1-5 Vdc
Device
Range
Resistor
Current
Sense
Resistor
_
Model 340
Terminals
_
System Power
Supply
_
+
TIE
+
See Note 1
I
I
O
O
I
O
X03059S0
I
O
Notes:
1. HART Communicator Connections:
Non-hazardous location - Connect as shown above.
Hazardous location - Refer to the Communicator nameplate and the Manual supplied with the
Communicator for certifications and approvals before connecting.
2. Connect the DMM (set to mA) in series with either loop wire. Remove jumper to install DMM and
replace when DMM is removed.
FIGURE 5-1 Equipment Connection for System Checkout
5.4 VERIFICATION
This section covers communication test, communication error check, analog output verification, and
configuration verification.
5.4.1 Communication Test
This test verifies that the HART Communicator and transmitter(s) can communicate properly. From user
configuration documentation, obtain transmitter IDs, addresses, and tags.
5-2
May 1998
UM340-1
POST-INSTALLATION CHECKOUT
1. Turn on the HART Communicator.
If the Communicator finds a transmitter on a Point-To-Point Network, the Online menu with the
transmitter’s type and tag name is displayed. Go to Section 5.4.2.
If the Communicator displays: No device found at address 0. Poll?, go to either step
2 or 3.
2. POINT-TO-POINT NETWORK
Check the following: Communicator connections, all other loop connections, power to transmitter,
transmitter address (0), transmitter model number. Repair as necessary and repeat step 1.
3. MULTI-DROP NETWORK
Press Yes (F1) to enter digital mode and search for devices with polling addresses of 1-15.
If the Communicator finds a transmitter on a Multi-Drop Network, the Online menu with the
transmitter’s type and tag name is displayed. Each transmitter connected to the loop can be interrogated
in sequence. Go to the next Section.
If the Communicator displays: No device found. Press OK, check all loop connections,
power to transmitters, transmitter addresses (1-15), transmitter model numbers, etc. Repair as
necessary and repeat step 1.
5.4.2 Communications Error Check
1. Establish communication; the Online menu displays. Press the Quick Access Key to display the Quick
Access Key menu.
2. Press “2” on the keypad to display the Status menu. Press “2” again to start checking for errors. The
Communicator checks for errors.
3. If no error is present, the message “No Errors” displays. Go to step 4.
If one or more errors is detected, one or more error codes is displayed. Go to step 4, then refer to
Section 7.3 Troubleshooting to confirm and resolve the error(s).
4. Press OK (F4). Turn off the Communicator or press the LEFT ARROW/PREVIOUS MENU key to
return to the menu for the next procedure.
5.4.3 Verify Analog Output Signal
This test verifies that a transmitter is operating properly and is capable of transmitting a 0% or 100%
analog output signal that can be received at its destination. The test applies only to transmitters operating in
analog mode.
1. Establish communication; the Online menu displays. Press
“1” or RIGHT ARROW/SELECT to select Loop Override.
May 1998
5-3
POST-INSTALLATION CHECKOUT
2. A warning appears: “WARN–Loop should be removed from
automatic control.” If the loop status cannot be changed for
operational reasons, press ABORT (F3) to end this procedure
and return to the Online menu. If it is okay to proceed, go to
step 3.
3. Remove the loop from automatic control, then press OK (F4).
When OK is pressed, a list of analog output options is
displayed (at right).
4. Press “1” on the keypad or ENTER (F4) to select the 4 mA
option. The Communicator displays the message “Fld dev
output is fixed at 4.000 mA.” Press OK (F4) to confirm and
proceed with testing or press ABORT (F3) and proceed to
step 8.
UM340-1
MPCO 340A:PT100
Choose analog output
level
1 4mA
2 20mA
3 Other
4 End
ABORT|ENTER
5. Read the DMM. The value should be 4 mA.
6. Repeat steps 4 and 5 using the 20 mA output level. The
DMM reading should be 20 mA.
7. For outputs other than 4 or 20 mA, choose option 3, Other,
and enter any desired output value. The DMM reading should
be the entered value in mA.
8. To end the loop override session, press “4” on the keypad or
the ABORT (F3) softkey. The message “Returning fld dev to
original output” appears.
9. When the message “NOTE–Loop may be returned to
automatic control” appears, return the loop to automatic
control, then press OK (F4). This completes verification of
analog output.
IMPORTANT
Failure to exit loop override correctly can cause
the transmitter to remain parked at a fixed
current.
This completes the system checkout. Disconnect test equipment, connect any disconnected wires, and
restore any removed protective covers on the transmitter or other devices.
n
5-4
May 1998
UM340-1
ON-LINE OPERATION
6.0 ON-LINE CONFIGURATION AND OPERATION
On-line operation includes remote configuration and monitoring involving communication between the
HART Communicator (host device) and Model 340 (field device). It also includes local configuration using
the transmitter’s built-in magnetic switches.
Figures 3-1 and 5-1 show the connections for on-line configuration. Here, the HART Communicator and
Model 340 are directly communicating, and data may be uploaded from the transmitter to the HART
Communicator or downloaded from the HART Communicator to the transmitter. In addition, the Model
340 can be configured locally using built-in magnetic switches.
The first part of this section contains the steps to configure and monitor a Model 340 from a HART
Communicator. The latter part of the section describes local operation of a transmitter using its magnetic
switches.
6.1 REMOTE CONFIGURATION AND OPERATION
6.1.1 Configuration
Each transmitter is shipped with default data stored in its memory. Some of this data controls
communication and transmitter operation and cannot be altered by the user. Other data is used to make the
transmitter respond to changes in pressure with a change in current or digital output and is alterable by the
user. This data includes configuration parameters that are used to set up the transmitter.
Begin configuration as described in the following pages. Note that a two-column format is used for the
remainder of this section: HART Communicator screens are shown in the right-hand column, related
procedure steps in the left-hand column.
1. Establish communication with a transmitter (see Section 3.2).
The Online menu is displayed.
2. Press “3” on the Communicator keypad to display the
Configure Xmtr menu (at right). This menu shows the list of
function blocks and other transmitter features that can be
configured.
The top line on the display shows the transmitter type and the
transmitter tag number.
MPCO 340A:PT100
Configure Xmtr
çz
1->Write Protect
2 Sensor Input
3 Totalizer Block
4 Characterizer
â 5 Operator Display
HELP |SAVE |HOME
Write Protection
Write protecting a transmitter prevents other instruments on the
loop from changing configuration parameters. To change the
write protection of transmitter, follow the steps below.
1. From the Configure Xmtr menu, press “1” on the keypad to
display the Write protect menu. This menu offers two
options:
• Disable – Permits transmitter parameters to be changed
and a configuration to be downloaded to a transmitter by
pressing SEND key.
• Enable – Prevents changes to transmitter parameters and
downloading of a configuration to a transmitter.
May 1998
6-1
ON-LINE OPERATION
2. From the Write protect menu (at right), choose either Enable
or Disable. Write protection is now either enabled or disabled
for the transmitter to which the Communicator is connected.
3. When the Configure Xmtr menu appears again, turn off the
Communicator before continuing with configuration.
Function Blocks
There are 12 function blocks in a Model 340 transmitter,
including the Write Protect block discussed above. Each block
contributes a specific operation and each operation is defined by
one or more user-defined parameters. Configuration is the process
of selecting the needed function blocks and entering or editing the
parameters Appendix A describes each function block with its
parameters. Appendix C provides the default value for each
parameter.
UM340-1
MPCO 340A:PT100
Write protect
1 Disable
2 Enable
ABORT|ENTER
After parameters have been defined, the new configuration
information for that block can be sent immediately to a
transmitter, or the user can change the parameters of other
function blocks, then send the configuration for all the function
blocks at once.
NOTE
Configurations cannot be sent if write protect
mode is enabled.
The next several sections describe configuration of individual
function blocks. To configure a specific function block:
1. Choose the function block to be configured by pressing the
DOWN arrow until the function block’s name is highlighted
on the Configure Xmtr menu (e.g., Sensor Input at right).
2. Press RIGHT ARROW/SELECT to display the menu for the
chosen function block.
3. Go to the section of this manual for the chosen function block
(Sections 6.1.1.1-6.1.1.10).
MPCO 340A:PT100
Configure Xmtr
çz
1 Write Protect
2->Sensor Input
3 Totalizer Block
4 Characterizer
â 5 Operator Display
HELP |SAVE |HOME
6.1.1.1 Sensor Input Block
Sensor Input block parameters and the range of values are described in Appendix A. Default values are in
Appendix C.
1. From the Sensor Input menu, press “1” on the keypad to
display the Measured Var Unit menu. The current MV unit is
shown directly beneath the menu name (right).
2. To change the MV unit, use the UP or DOWN arrow keys to
highlight the desired unit. Units are listed in Appendix A
under the Sensor Input Block description.
3. Press ENTER (F4) to select the highlighted unit and display
the Sensor Input menu.
6-2
MPCO 340A:PT100
Measured Var Unit
inHg
é inHg
ftH2O
mmH2O
ê mmHg
HELP
HOME
May 1998
UM340-1
ON-LINE OPERATION
4. To view or change either MV Lo or MV High, scroll to the
menu item, then press RIGHT ARROW/SELECT.
5. Use the keypad to enter the new value, then press ENTER
(F4). Press ESC (F3) to display the Sensor Input menu
without making a change.
6. To view or change the Damping value, scroll to highlight the
menu item, then press RIGHT ARROW/SELECT, or press
“4” on the keypad.
7. Enter a new value for Damping (in seconds), then press
ENTER (F4). Press ESC (F3) to return to the Sensor Input
menu without making a change.
8. To choose a transfer function, scroll to highlight the menu
item, then press RIGHT ARROW/SELECT, or press “5” on
the keypad to see the transfer function options (at right).
9. Scroll to the desired transfer function, then press ENTER
(F4) to select this function or ABORT (F3) to abandon the
procedure and return to the Sensor Input menu.
10. To view or change the transfer function cutoff value, scroll to
highlight the Transfer Fct Cutoff item, then press RIGHT
ARROW/SELECT, or press “6” on the keypad.
MPCO 340A:PT100
Square Root
1 Linear
2 Square Root
3 3/2 Power
4 5/2 Power
ABORT|ENTER
11. Type a new value for the transfer function cutoff, then press
ENTER (F4), or press ESC (F3) to return to the Sensor Input
menu without making a change.
12. To view or change the zero dropout value, scroll to highlight
the menu item, then press RIGHT ARROW/SELECT, or
press “7” on the keypad.
13. Type a new value for zero dropout, then press ENTER (F4),
or press ESC (F3) to return to the Sensor Input menu without
making a change.
14. To range the transmitter by applying actual URV and LRV
pressures, scroll to highlight Active Input, then press RIGHT
ARROW/SELECT, or press “8” on the keypad. The Active
Input menu (at right) displays. The screen shows the actual
pressure measurements.
15. Rerange by performing the following procedure:
1) Apply the LRV pressure to the transmitter.
MPCO 340A:PT100
♥
Active Input
çz
1 MV
0 inHg
2 MV Lo
1 inHg
3 MV Hi
1 inHg
4 Set Lo
5 Set Hi
HELP |SEND |HOME
2) Scroll to the Set Lo menu option or press “4” on the
keypad. Press RIGHT ARROW/SELECT to enter the
current measured value as the LRV.
3) The display recycles and shows the new LRV.
4) Apply the URV pressure to the transmitter.
May 1998
6-3
ON-LINE OPERATION
UM340-1
5) Scroll to the Set Hi menu option or press “5” on the
keypad. Press RIGHT ARROW/SELECT to enter the
current measured value as the URV.
6) The screen recycles and shows the new URV.
7) Press the LEFT ARROW/PREVIOUS MENU key two
times to return to the Sensor Input menu.
NOTE
To conserve battery power, do not leave the HART Communicator in the Sensor
Input mode.
16. Go to the next section or the next desired function block.
6.1.1.2 Totalizer Block
Totalizer block parameters and the range of values are described in Appendix A. Default values are in
Appendix C.
1. From the Totalizer Block menu, press “1” on the keypad to
display the Fullscale value menu (at right).
2. Use the keypad to enter the desired fullscale value. Press
ENTER (F4) to confirm the new value and return to the
Totalizer Block menu.
3. To change the timebase, press “2” on the keypad to view the
Timebase menu.
MPCO 340A:PT100
Fullscale value
12.00
12.00
DEL |ESC |ENTER
4. Use the UP or DOWN arrow key to scroll to the appropriate
timebase value. Press ENTER (F4) to select the new value or
press ESC (F3) to return to the Totalizer Block menu without
making a change.
5. From the Totalizer Block menu, press “3” to display the
Multiplier menu.
6. Use the keypad to enter a new multiplier value. Press ENTER
(F4) to select the new value or press ESC (F3) to return to the
Totalizer Block menu without making a change.
7. From the Totalizer Block menu, press “4” to display the
Units menu.
8. Use the keypad to enter a new unit value. Press ENTER (F4)
to select the new unit or press ESC (F3) to return to the
Totalizer Block menu without making a change.
9. From the Totalizer Block menu, press “5” to display the Zero
Dropout menu.
10. Use the keypad to enter a new zero dropout. Press ENTER
(F4) to select the new value or press ESC (F3) to return to the
Totalizer Block menu without making a change.
6-4
May 1998
UM340-1
ON-LINE OPERATION
11. From the Totalizer Block menu, press “6” to display the
Local Display menu (at right). The current selection is shown
underneath the menu name.
12. To enable or disable the transmitter’s Smart Display, scroll to
the desired choice, then press ENTER (F4) to select the new
choice or press ESC (F3) to return to the Totalizer Block
menu without making a change.
13. Go to the next section or the next desired function block.
6.1.1.3 Characterizer
The Characterizer block allows the output signal to be adjusted to suit unique situations, such as an
irregular tank shape or non-linear valve. Characterizer block parameters and the range of values are
described in Appendix A. Default values are in Appendix C.
MPCO 340A:PT100
1. From the Characterizer menu (at right), press “1” on the
Characterizer
çz
keypad to display the Characterizer submenu.
1->Characterizer
2. Use the UP or DOWN arrow key to choose either
2 Characterizer Posi
characterizer ON or OFF, then press ENTER (F4) to select
3 X1
10.00
that choice or press ESC (F3) to return to the Characterizer
4 Y1
10.00
menu without making a change.
â 5 X2
20.00
HELP
|SEND
|HOME
3. To view or change the characterizer position, press “2” on the
keypad to display the Characterizer Position menu.
4. Use the UP or DOWN arrow key to choose either Transmitter
Output or Controller Output as the characterizer position,
then press ENTER (F4) to select that choice or press ESC
(F3) to return to the Characterizer menu without making a
change.
5. To enter values to define the characterizer curve, scroll to any
X or Y line on the Characterizer menu and press RIGHT
ARROW/SELECT to display the X or Y menu.
6. Type the desired value for X or Y, then press ENTER (F4) to
confirm the new value or press ESC (F3) to return to the
Characterizer menu without making a change. Continue until
all necessary changes have been made to the characterizer
curve.
7. Go to the next section or the next desired function block.
6.1.1.4 Operator Display Block
Operator Display block parameters and the range of values are
described in Appendix A. Default values are in Appendix C.
1. From the Operator Display menu (at right), press “1” on the
keypad to display the Process Var Unit menu.
2. Type the alphabetic or alphanumeric sequence for the process
engineering variable unit, then press ENTER (F4) to confirm
May 1998
MPCO 340A:PT100
Operator Display
çz
1->PV Units
GPM
2 PV Lo
0.00 GPM
3 PV Hi
85.95 GPM
4 AutoRerange
â 5 Local Units
|SEND |HOME
6-5
ON-LINE OPERATION
UM340-1
the new unit or press ESC (F3) to return to the Operator
Display menu without making a change.
3. To change the PV low value, press “2” on the keypad to
display the Process Var Lo menu.
4. Type the desired low value for the process variable range,
then press ENTER (F4) to confirm the new value or press
ESC (F3) to return to the Operator Display menu without
making a change.
5. To change the PV high value, press “3” on the keypad to
display the Process Var Hi menu.
6. Type the value for the desired high value for the process
variable range, then press ENTER (F4) to confirm the new
value or press ESC (F3) to return to the Operator Display
menu without making a change.
7. To turn the Auto Rerange feature on or off, press “4” on the
keypad to view the AutoRerange menu.
8. Use the UP or DOWN arrow key to select either Off or On,
then press ENTER (F4) to confirm the selection or press ESC
(F3) to return to the Operator Display menu without making a
change.
9. To change the units to be displayed locally, or the
combination of units to be displayed during autotoggling,
press “5” on the keypad to display the list of local units (at
right).
10. Use a keypad number to select a local display units option
and return to the Operator Display menu. Alternatively, use
the UP or DOWN arrows to scroll to the desired option, then
press ENTER (F4) to confirm your selection or press
ABORT (F3) to return to the Operator Display menu without
making a change.
MPCO 340A:PT100
MV Units
1 % Range
2 PV Units
3 MV Units
4 %, MV, and PV
5 Totalizer Only
ABORT|ENTER
11. To turn the Autotoggle feature Off or On, press “6” on the
keypad to view the Autotoggle menu.
12. Use keypad numbers 1 or 2 to select either Off or On and
return to the Operator Display menu. Alternatively, use the
UP or DOWN arrows to scroll to the desired option, then
press ENTER (F4) to confirm the new selection or press
ABORT (F3) to return to the Operator Display menu without
making a change.
13. To enter a toggle time value in seconds, press “7” on the
keypad to display the Toggle Time menu.
14. Type the desired toggle time value, then press ENTER (F4) to
confirm the new value or press ESC (F3) to return to the
Operator Display menu without making a change.
15. Go to the next section or the next desired function block.
6-6
May 1998
UM340-1
ON-LINE OPERATION
6.1.1.5 Transmitter ID
Transmitter ID block parameters and the range of values are described in Appendix A. Default values are
in Appendix C.
1. From the Transmitter ID menu (at right), press “1” on the
keypad to display the Tag menu.
2. Type the alphanumeric tag for the transmitter (up to 8
characters), then press ENTER (F4) to confirm the new name
or press ESC (F3) to return to the Transmitter ID menu
without making a change.
3. To change the transmitter’s descriptor, press “2” on the
keypad to display the Descriptor menu.
MPCO 340A:PT100
Transmitter ID
1à
à Tag
2 Descriptor
3 Message
4 Date
â 5 Device S/N
HELP|SEND|HOME
çz
4. Type the alphanumeric descriptor (up to 16 characters), then
press ENTER (F4) to confirm the descriptor or press ESC
(F3) to return to the Transmitter ID menu without making a
change.
5. To change the message text for the transmitter, press “3” on
the keypad to display the Message menu.
6. Type the desired message text (up to 32 characters), then
press ENTER (F4) to confirm the message or press ESC (F3)
to return to the Transmitter ID menu without making a
change.
7. To enter a date, press “4” on the keypad to display the Date
menu (at right).
8. Type the date in DD/MM/YY format, then press ENTER
(F4) to confirm the new name or press ESC (F3) to return to
the Transmitter ID menu without making a change.
9. To enter the transmitter serial number, press “5” on the
keypad to display the Device S/N menu.
MPCO 340A:PT100
Date
06/23/96
0/23/96
HELP|
ESC
|ENTER
10. Type the serial number (no letters permitted), then press
ENTER (F4) to confirm the new number or press ESC (F3)
to return to the Transmitter ID menu without making a
change.
11. To enter a polling address, press “6” on the keypad to display
the Poll addr menu.
12. Type a polling address (0, or 1-15), then press ENTER (F4)
to confirm the new polling address or press ESC (F3) to
return to the Transmitter ID menu without making a change.
13. Go to the next section or the next desired function block.
6.1.1.6 Output Block
The Output block is used to set the failsafe level at one of three positions:
• Lo – 3.85 mA
• Hi – 22.5 mA
May 1998
6-7
ON-LINE OPERATION
•
UM340-1
Last Output – The last output (in mA) before failure occurred.
1. From the Configure Xmtr menu, press “7” on the keypad to
display the Output Block menu.
2. To change the failsafe value, press “1” or the RIGHT
ARROW/SELECT key to display the Failsafe Level menu (at
right).
3. Use the UP or DOWN arrow keys to scroll to the desired
failsafe level, then press ENTER (F4) to select the level or
ESC (F3) to return to the Output Block menu without making
a change.
MPCO 340A:PT100
Failsafe Level
Lo
Lo
Hi
Last Output
ESC
|ENTER
4. Press the LEFT ARROW/PREVIOUS MENU key once to
display the Configure Xmtr menu.
5. Go to the next section or the next desired function block.
6.1.1.7 Alarm Block
Alarm block parameters and the range of values are described in Appendix A. Default values are in
Appendix C.
MPCO 340A:PT100
1. From the Alarm Block menu (at right), press “1” on the
keypad to display the Alarm 1 menu.
2. Use the UP or DOWN arrow key to select Enable or Disable,
then press ENTER (F4) to confirm the selection or press ESC
(F3) to return to the Alarm Block menu without making a
change.
3. To change the Alarm 1 setpoint, press “2” on the keypad to
display the Alarm 1 SP menu. This menu (at right) shows the
measured variable units as well as the current setpoint value.
4. Type a setpoint value, then press ENTER (F4) to confirm the
new value or press ABORT (F3) to return to the Alarm Block
menu without making a change.
5. To change the Alarm 1 type, press “3” on the keypad to
display the A1 Type menu.
Alarm Block
çz
1à
à Alarm 1
Disable
2 A1 Setpoint
3 A1 Type
Low
4 Alarm 2
Disable
â 5 A2 Setpoint
SAVE |HOME
MPCO 340A:PT100
Units are in ftH2O
A1arm 1 Setpoint
1.25
1.25
DEL |ABORT|ENTER
6. Use the UP or DOWN arrow key to choose either Low or
High, then press ENTER (F4) to confirm the new type or
press ESC (F3) to return to the Alarm Block menu without
making a change.
NOTE
Configuration of the preceding functions is
identical for Alarm 2.
7. To turn the self-clearing NAK (non-acknowledgment) on or
off, press “7” on the keypad to display the Self Clearing NAK
menu. On means that alarms for conditions that no longer
6-8
May 1998
UM340-1
ON-LINE OPERATION
exist will be cleared automatically. Off means that all alarms
must be acknowledged.
8. Use the UP or DOWN arrow key to choose either On or Off,
then press ENTER (F4) to confirm the selection or press ESC
(F3) to return to the Alarm Block menu without making a
change.
9. To choose whether to disable alarms when the transmitter is
out of service, press “8” on the keypad to display the Out of
Service menu.
10. Use the UP or DOWN arrow key to choose either Off or On,
then press ENTER (F4) to confirm the selection or press ESC
(F3) to return to the Alarm Block menu without making a
change.
11. Go to the next section or the next desired function block.
6.1.1.8 SP Track & Hold Block
SP Track & Hold block parameters and the range of values are described in Appendix A. Default values
are in Appendix C.
MPCO 340A:PT100
1. From the SP Track & Hold menu (at right), press “1” on the
SP Track & Hold
çz
keypad to display the Tracking SP menu.
1à
à Tracking SP
No
2. Use the UP or DOWN arrow key to select No or Yes, then
2 PUSP
press ENTER (F4) to confirm the selection or press ESC (F3)
to return to the SP Track & Hold menu without making a
change.
SAVE|HOME
3. To change the power-up setpoint (PUSP), press “2” on the
keypad to display the Power-Up Setpoint menu. The current
unit is displayed on this menu.
4. Type the setpoint value, then press ENTER (F4) to confirm
the selection or press ABORT (F3) to return to the SP Track
& Hold menu without making a change.
5. Go to the next section or the next desired function block.
6.1.1.9 A/M Transfer
A/M Transfer block parameters and the range of values are described in Appendix A. Default values are in
Appendix C.
MPCO 340A:PT100
1. From the A/M Transfer menu (at right), press “1” on the
A/M Transfer
çz
keypad to display the Power Up Mode menu.
1à
à Power Up Mode
A
2. Use the UP or DOWN arrow key to select A or M, then press
2 Auto Only
No
ENTER (F4) to confirm the selection or press ESC (F3) to
3 PUV
0.00%
return to the A/M Transfer menu without making a change.
3. To change the Auto Only selection, press “2” on the keypad
to display the Auto Only menu.
May 1998
SAVE |HOME
6-9
ON-LINE OPERATION
UM340-1
4. Use the UP or DOWN arrow key to select Yes (A/M change
from Communicator only) or No (magnetic switches can be
used to change mode), then press ENTER (F4) to confirm the
selection or press ESC (F3) to return to the A/M Transfer
menu without making a change.
5. To change the power-up valve percentage, press “3” on the
keypad to display the Power-Up Valve menu.
6. Type a new amount for the power-up valve percentage, then
press ENTER (F4) to confirm the new value or press ESC
(F3) to return to the A/M Transfer menu without making a
change.
7. Go to the next section or the next desired function block.
6.1.1.10 Controller
Controller block parameters and the range of values are described in Appendix A. Default values are in
Appendix C.
1. From the Controller menu (at right), press “1” on the keypad
to display the Controller menu.
2. Use the UP or DOWN arrow key to select OFF or ON, then
press ENTER (F4) to confirm the selection or press ESC (F3)
to return to the Controller menu without making a change.
3. To select the type of controller, press “2” on the keypad to
display the Type menu. The current type is displayed below
the menu name.
MPCO 340A:PT100
Controller
çz
1à
à Controller
OFF
2 Type
PID
3 Action
Direct
4 PG
1.00
â 5 TI
1.00 min/rep
SAVE |HOME
4. Use the UP or DOWN arrow key to select Undefined, PID,
PD, or ID, then press ENTER (F4) to confirm the selection or
press ESC (F3) to return to the Controller menu without
making a change.
5. To change the action of the controller, press “3” on the
keypad to display the Action menu.
6. Use the UP or DOWN arrow key to select Direct or Reverse,
then press ENTER (F4) to confirm the selection or press ESC
(F3) to return to the Controller menu without making a
change.
7. To change the proportional gain, press “4” on the keypad to
display the Proportional Gain menu.
8. Type the new value for proportional gain, then press ENTER
(F4) to confirm the new value or press ESC (F3) to return to
the Controller menu without making a change.
MPCO 340A:PT100
Time Integral
1.00 min/rep
1.00
9. To change the time integral, press “5” on the keypad to
display the Time Integral menu (at right).
10. Type the new time integral value (minutes/repeat), then press
ENTER (F4) to confirm the new value or press ESC (F3) to
return to the Controller menu without making a change.
6-10
DEL |ESC |ENTER
May 1998
UM340-1
ON-LINE OPERATION
11. To change the time derivative, press “6” on the keypad to
display the Time Derivative menu.
12. Type the new time derivative value (minutes), then press
ENTER (F4) to confirm the new value or press ESC (F3) to
return to the Controller menu without making a change.
13. To change the derivative gain, press “7” on the keypad to
display the Derivative Gain menu.
14. Type the new value for derivative gain, then press ENTER
(F4) to confirm the new value or press ESC (F3) to return to
the Controller menu without making a change.
15. To change the manual reset value, press “8” on the keypad to
display the Manual Reset menu.
16. Type the new value for manual reset (percent), then press
ENTER (F4) to confirm the new value or press ESC (F3) to
return to the Controller menu without making a change.
This completes configuration of the function blocks.
6.1.2 SEND and SAVE a Configuration
When the Configure Xmtr menu is first displayed, it shows a
SAVE (F2) softkey. As each function block menu is displayed,
the SAVE softkey continues to be displayed.
As soon as a change is made to any parameter, the SAVE softkey
changes to SEND. Pressing SEND downloads the configuration
with the new values to the transmitter, and the softkey returns to
SAVE.
During a configuration session, it is the user’s choice whether to
press SEND each time a change is made or wait until all changes
have been made. Attempting to turn off the Communicator
without sending data causes an error message to be displayed (at
right).
MPCO 340A:PT100
There is unsent data.
Send it before
shutting off?
Press YES (F1) to send the changed configuration data to the
transmitter. The new configuration replaces the previous
configuration in the transmitter.
YES
NO
Press NO (F2) to turn off the Communicator without sending the
changes (changes are lost).
If data is sent to the transmitter, the SAVE softkey displays.
Pressing SAVE allows data to be saved in the Memory Module or
the Data Pack. Each saved configuration is given a unique name
that can be used to retrieve the configuration later to save effort
when configuring additional transmitters (see Section 2.5.1.2).
May 1998
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UM340-1
6.1.3 Quick Access Key Functions
The next few paragraphs describe how to use the factory-supplied Quick Access Key options. Userselected options can be added to the Quick Access Key menu as described in Section 2.6.1. To access the
Quick Access Key functions, press the Quick Access Key (1) to power-up the Communicator or (2) from
any online menu when connected to a transmitter.
The five Quick Access Key options provided with Model 340 Transmitters are:
•
XMTR Variables
•
Status
•
Totalizer Control
•
PID Control
•
Range Xmtr
6.1.3.1 XMTR Variables
Parameters observable (but not changeable) from the XMTR Variables menu are those being supplied
“live” from the connected transmitter, as follows:
MENU ITEM
NUMBER
PARAMETER
DESCRIPTION
1
% Range
Percent of range (0-100%).
2
MV
Measured variable.
3
PV
Process variable.
4
SP
Setpoint.
5
V
Valve.
6
Current
Current in milliamperes.
7
Tot
Totalizer count.
1. From the XMTR Variables menu, press a key from “1”
through “7” to observe the desired variable.
2. Press EXIT (F4) to return to the XMTR Variables menu.
Press LEFT ARROW/PREVIOUS MENU to return to the
Quick Access Key menu.
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UM340-1
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6.1.3.2 Status
The Status menu provides data about the connected transmitter, as follows:
MENU ITEM
NUMBER
PARAMETER
DESCRIPTION
1
Model Number
Model number and other identification data.
2
Errors
Check for errors and report.
3
Alarms
Check for alarms and report.
4
Totalizer Status
Report on totalizer interrupts.
1. From the Status menu, press “1” to display the Model
Number menu (at right).
2. If no data shows for a particular attribute, press the number
of the attribute (e.g., “3” for Software rev) to view the
attribute value, then press EXIT (F4) to return to the Model
Number menu.
3. In the same manner, press “2” through “6” on the keypad to
observe any attributes not showing on the display, then press
EXIT (F4) to return to the Model Number menu.
MPCO 340A:PT100
Model Number
çz
1->Tag
PT100
2
340D2BH12B5NNFF
3 Software rev
2
4 Sensr s/n 1377010
â 5 USL
5.87 inHg
HELP |SAVE
4. Press LEFT ARROW/PREVIOUS MENU to display the
Status menu.
5. To observe errors, press “2” on the keypad to initiate a check
for errors. The Communicator checks for errors, then displays
“No Errors” or appropriate error codes (see Section 7). Press
OK to display the Status menu.
6. To view the alarms status, press “3” on the keypad to display
the Alarms menu (at right). Depending on the Communicator
configuration, data may be showing for each transmitter
attribute.
7. Press the appropriate keypad number to observe the current
status (1, 2, or 3) or observe or change the alarm setpoint (4
or 5).
MPCO 340A:PT100
Alarms
çz
1->Alarm 1
Silent
2 Alarm 2
Silent
3 Out of Service Off
4 A1 Setpoint
5 A2 Setpoint
SAVE
8. After observing data for any variable, press the F3 (EXIT or
ABORT) softkey to return to the Alarms menu.
9. If desired, type a new setpoint for Alarm 1 or Alarm 2, press
ENTER (F4) to confirm the new value or press ABORT (F3)
to return to the Alarms menu without making a change.
10. Press the LEFT ARROW/PREVIOUS MENU key to display
the Status menu.
May 1998
6-13
ON-LINE OPERATION
UM340-1
11. Press “4” on the keypad to display the Totalizer Status menu
(at right).
12. If no data are showing for a particular parameter, press its
number on the keypad (e.g., “3” for Interrupt) to view the
parameter’s value, then press EXIT (F4) to return to the
Totalizer Status menu.
MPCO 340A:PT100
Totalizer Status
çz
1->Reset Interrupt No
2 Power Interrupt
3 Interrupt
No
4 Stopped
Yes
SAVE
13. Press the LEFT ARROW/PREVIOUS MENU key twice to
display the Quick Access Key menu.
6.1.3.3 Totalizer Control
The Totalizer Stopped/Running menu (at right) permits direct
control of the Totalizer.
1. Press the number of the desired action or use the UP or
DOWN arrows to scroll to the action and press ENTER (F4).
The action occurs immediately and the Quick Access Key
menu is displayed. To take no action, press ABORT (F3).
2. To take another action, or reverse an action taken in error,
press “3” to display the Totalizer menu again.
MPCO 340A:PT100
Totalizer Stopped
çz
1->Stop Totalizer
2 Start Totalizer
3 Reset Totalizer
4 Reset/Start Tot
5 Clear Reset Flag
ABORT|ENTER
3. Press the number of the desired action. The action occurs and
the Quick Access Key menu is displayed.
6.1.3.4 PID Control
The PID Control menu permits easy access to controller functions, as follows:
MENU ITEM
NUMBER
PARAMETER
DESCRIPTION
1
Change setpoint
Enter a new setpoint value.
2
Change valve
Enter a new value.
3
Go Auto/Manual
Observe auto/manual status, change controller operation
from auto to manual or vice versa.
4
Tune
Change action of the controller and enter new values for
proportional gain, time integral, time derivative, derivative
gain, and manual reset.
1. From the PID Control menu, press “1” to change the setpoint.
2. Type a new setpoint value. When finished, press ENTER
(F4) to confirm the new value or press ABORT (F3) to return
to the PID Control menu without making a change.
3. To change the valve value, press “2” on the keypad.
4. Type a new value. When finished, press ENTER (F4) to
confirm the new value or press ABORT (F3) to return to the
PID Control menu without making a change.
6-14
May 1998
UM340-1
5. To change the auto/manual status, press “3” on the keypad to
display the Go Auto/Manual menu (at right).
6. Press “1” to observe the current mode (if not displayed on the
menu) or “2” or “3” to change the mode. Mode changes take
a few seconds, then the Go Auto/Manual menu is displayed
again. Press the LEFT ARROW/PREVIOUS MENU key to
return to the PID Control menu.
7. To tune the controller, press “4” on the keypad to display the
Tune menu (at right).
8. The functions available on the Tune menu are the same as
those described for the Controller function block. To make
changes, choose the parameter to change by pressing its
number on the menu, type the new amount in the field
provided, then press SEND (F3).
9. When finished making changes, press the LEFT
ARROW/PREVIOUS MENU key twice to return to the
Quick Access Key menu.
ON-LINE OPERATION
MPCO 340A:PT100
Go Auto/Manual
çz
1->Current ModeManual
2 Automatic Mode
3 Manual Mode
SAVE
MPCO 340A:PT100
Tune
çz
1->Action
Direct
2 PG
1.00
3 TI
1.00 min/rep
4 TD
0.00 min
5 DG
1.00
SAVE
6.1.3.5 Range Xmtr
The Range Xmtr menu (at right) permits measured variable and
process variable units and Lo/Hi values to be changed. It also
provides access to Auto Rerange and Transfer Function menus.
1. Press the number of the desired menu option or use the UP or
DOWN arrows to scroll to the option, then press RIGHT
ARROW/SELECT.
2. To make changes to measured variable (MV) values or select
a transfer function, follow the procedures given for the Sensor
Input function block, Section 6.1.1.1.
MPCO 340A:PT100
Range Xmtr
1->MV Units
2 MV Lo
1
3 MV Hi
1
4 PV Units
â 5 PV Lo
0.00
HELP|SAVE
çz
inHg
inHg
inHg
Q5AH
Q5AH
3. To make changes to process variable (PV) values or set Auto
Rerange On or Off, follow the procedures given for the
Operator Display function block, Section 6.1.1.4.
4. When finished, press SEND to download the changed data to
the transmitter. If desired, press SAVE to store the new
configuration in the Memory Module or Data Pack.
5. Press the LEFT ARROW/PREVIOUS MENU key to return
to the Quick Access Key Menu.
May 1998
6-15
ON-LINE OPERATION
UM340-1
6.2 LOCAL TRANSMITTER OPERATION
The Model 340 has three built-in magnetic switches for local operation. They are located on the electronics
module and are actuated through the wall of the transmitter enclosure using the Moore Products Co.
magnetic screwdriver supplied with each unit.
P/N 20027-84
X02810S0
MOORE PRODUCTS CO.
Straight-Slot Tip
Magnetic End
IMPORTANT
Use only the Moore magnetic screwdriver to actuate the magnetic switches. Other
magnets can cause inconsistent behavior of one or more switches.
The three switch targets are labeled Z (zero), FS (fullscale), and D (damping). Although pushbuttons are
not involved, use of these switches is often called “pushbutton mode.” Local functions that can be
performed with the magnetic switches are described below.
6.2.1 Smart Display Functionality
The optional Smart Display can display the measured variable (MV), process variable (PV), valve (V),
setpoint (SP) in PV or MV units, and the output of the totalizer (TOTAL). See Figure 1-6.
The PV and MV units appearing on the Smart Display are chosen during configuration of the Operator
Display function block (see Section 6.1.1.4) from the following options:
• % range – show values as percent of full span (%)
• PV units – show values in the units chosen for the process variable (ENG)
• MV units – show values in the units chosen for the measured variable (none)
• %, MV, and PV – show values in all three types of units
The units displayed during transmitter operation depend on (1) the local units option chosen during
configuration of the Operator Display block, (2) whether the Controller block is ON or OFF, and (3)
whether the Totalizer display is ENABLED or DISABLED. Possibilities are as follows:
Local Display
Code
Controller
(from
Controller
block)
Totalizer Display
(from Totalizer
Block)
Variables Available on Local Display
MV
Off
Off
MV
MV
Off
On
MV, Total
MV
On
Off
P in MV units, SP in MV units, V in %
MV
On
On
P in MV units, SP in MV units, V in %,
Total
PV
Off
Off
PV
PV
Off
On
PV, Total
PV
On
Off
P in PV units, SP in PV units, V in %
6-16
May 1998
UM340-1
ON-LINE OPERATION
Local Display
Code
Controller
(from
Controller
block)
Totalizer Display
(from Totalizer
Block)
Variables Available on Local Display
PV
On
On
P in PV units, SP in PV units, V in %, Total
%
Off
Off
%
%
Off
On
%, Total
%
On
Off
P in %, SP in %, V in %
%
On
On
P in %, SP in %, V in %, Total
MV/PV/%
Off
Off
MV, PV, %
MV/PV/%
Off
On
MV, PV, %, Total
MV/PV/%
On
Off
P in MV units, P in PV units, PV in %, SP in
MV units, SP in PV units, SP in %, V in %
MV/PV/%
On
On
P in MV units, P in PV units, PV in %, SP in
MV units, SP in PV units, SP in %, V in %,
Total
Total Only
Off
Off
Total
Total Only
Off
On
Total
Total Only
On
Off
Total
Total Only
On
On
Total
The valve is always displayed on the Smart Display as a percentage of controller output and the “V” and
“%” annunciators are lit. The setpoint is displayed in the same units as the process variable, and the “SP”
and “ENG,” or “%,” or (none) annunciators are lit.
If the applied pressure is outside the configured range, the display flashes.
6.2.2 Toggling the Display Manually
While conducting testing or for other reasons it may be necessary to change the functioning of the Smart
Display. Simply touch the magnetic end of the magnetic screwdriver momentarily to one of the targets to
perform the following:
Z - Halts autotoggling of display if autotoggle is “on.” Touch this target again to resume autotoggling. If
left alone, the transmitter will time out and resume autotoggling automatically after 5 minutes.
FS - Manually toggle variables on the display if more than one variable has been configured for display
(e.g., Local Display Code = %/MV/PV).
D - No function
May 1998
6-17
ON-LINE OPERATION
UM340-1
6.3 LOCAL TRANSMITTER CONFIGURATION (CONTROLLER OFF)
The local configuration changes described below apply to transmitters with the controller turned off. Local
functions for a transmitter-controller are described in Section 6.4.
6.3.1 Set Local Zero
The Z switch is used to set the lower range value (LRV) of the transmitter to equal the applied pressure.
The procedure below assumes that the transmitter is field mounted to an operating process.
1. Adjust the process pressure to the zero value.
2. Hold the magnetic end of the screwdriver on the Z switch for 5 seconds or more, then remove the
screwdriver from the target. The “PB” annunciator on the optional Smart Display should remain lit
after removing the screwdriver; if it does not, repeat this step. If working without a Smart Display, be
sure to count seconds properly or hold the screwdriver for 7 or 8 seconds to be sure pushbutton mode is
activated.
NOTE
Pushbutton mode times-out after 1 minute of inactivity. If the PB annunciator goes
out, repeat step 2 before proceeding.
Pushbutton mode can be deactivated by (1) momentarily holding the magnetic screwdriver on the D
switch or (2) waiting 1 minute for the automatic time-out to occur.
3. Set the zero value by momentarily pressing the magnetic end of the screwdriver on the Z switch. The
“PB” annunciator on the Smart Display extinguishes, indicating a return to normal mode.
The currently applied pressure has now been stored as the LRV (0% range value).
NOTE
When a new 0% value is set, the transmitter’s 100% value is automatically shifted
to maintain the original span, except as follows:
•
If the process is out of range of the transmitter, then no new zero value is
stored.
•
If the new zero value would shift the fullscale value past the sensor limit,
the new fullscale value is automatically set to the appropriate sensor limit
(except when this would produce a span that is too small, in which case
neither zero nor fullscale values are stored).
4. The zero set is complete. To set a new fullscale, go to the next section.
6.3.2 Set Local Fullscale
The FS switch is used to set the upper range value (URV) of the transmitter to equal the applied pressure.
The procedure below assumes that the transmitter is field mounted to an operating process. Changing the
fullscale value does not change the zero value.
1. Adjust the process pressure to the fullscale value.
2. Hold the magnetic end of the screwdriver on the FS switch for 5 seconds or more, then release the
pushbutton. The “PB” annunciator on the Smart Display should remain lit after removing the
6-18
May 1998
UM340-1
ON-LINE OPERATION
screwdriver; if it does not, repeat this step. If working without a Smart Display, be sure to count
seconds properly or hold the screwdriver for 7 or 8 seconds to be sure pushbutton mode is activated.
NOTE
Pushbutton mode times-out after 1 minute of inactivity. If the PB annunciator goes
out, repeat step 2 before proceeding.
Pushbutton mode can be deactivated by (1) momentarily holding the magnetic screwdriver on the D
switch or (2) waiting 1 minute for the automatic time-out to occur.
3. Enter the fullscale value by momentarily pressing the magnetic end of the screwdriver on the FS
switch. Observe that the “PB” annunciator on the Smart Display extinguishes, indicating a return to
normal mode.
The currently applied pressure has now been stored as the URV (100% range value).
NOTE
Changing the fullscale value of the transmitter does not affect the zero value. If the
input value is either smaller than the minimum span or larger than the maximum
span allowed by the transmitter, then no new fullscale value is stored.
4. The fullscale set is complete. To adjust damping, go to the next section.
6.3.3 Adjust Local Damping
Adjusting the damping changes the value of the digital filter’s time constant. The D, Z, and FS switches are
used to select one of 10 damping values. The HART Communicator can be used to confirm the damping
settings.
1. Hold the magnetic end of the screwdriver on the D switch for 5 seconds or more, then release the
pushbutton. The “PB” annunciator on the Smart Display should remain lit after removing the
screwdriver; if it does not, repeat this step. If working without a Smart Display, be sure to count
seconds properly or hold the screwdriver for 7 or 8 seconds to be sure pushbutton mode is activated.
NOTE
Pushbutton mode times-out after 1 minute of inactivity. If the PB annunciator goes
out, repeat step 1 before proceeding.
Pushbutton mode can be deactivated by (1) momentarily holding the magnetic screwdriver on the D
switch or (2) waiting 1 minute for the automatic time-out to occur.
2. Set the damping value to 0 seconds by momentarily touching the Z switch with the magnetic end of the
screwdriver at least 10 times. This establishes a known starting point: 0 seconds. When a Smart
Display is present, it alternately displays “0.00” and “SEC” at this point.
May 1998
6-19
ON-LINE OPERATION
UM340-1
3. Change to a new damping value by momentarily touching the FS switch “N” times to step to the value
nearest the desired damping value (DV, in seconds) as shown below. If the desired damping value is
exceeded, lower the damping value by momentarily touching the magnetic screwdriver to the Z switch
for each step.
N
1
2
3
4
5
6
7
8
9
DV
0.1
0.2
0.5
1
2
5
10
20
30
While setting damping, the Smart Display shows alternately “SEC” for seconds and the new damping
value in seconds. Observe that the value is correct.
4. When the desired damping value has been set, momentarily touch the D switch with the magnetic end
of the screwdriver. This stores the damping value in the transmitter and returns the transmitter to
normal mode.
6.4 LOCAL TRANSMITTER-CONTROLLER CONFIGURATION (CONTROLLER ON)
When the controller is on, magnetic switches accessible through the enclosure can be used to perform the
following functions:
•
Transfer control from auto (A) to manual (M) mode or vice versa
•
Change setpoint
•
Store setpoint as power-up setpoint (PUSP)
•
Change valve
•
Store valve as power-up valve (PUV)
The procedures below are performed using a Moore Products Co. magnetic screwdriver and the three
switch targets Z (zero), FS (fullscale), and D (damping) located on the upper side of the transmitter
enclosure (see Section 6.2).
6.4.1 Local A/M, Setpoint, and Valve Adjustments
These procedures assume that the transmitter is field mounted to an operating process and contains an
optional Smart Display to show the Auto and Manual control mode and process variable, set point, and
valve values.
Change A/M Control Mode
The active control mode is shown on the Smart Display by a lit “A” (Auto) or “M” (Manual) annunciator.
1. Hold the magnetic screwdriver on the D target for at least 5 seconds. The “PB” annunciator will light
and remain lit as long as the switch is activated.
2. When the control mode annunciator changes from “A” to “M” or “M” to “A,” remove the screwdriver
to release the switch. The control mode is now changed.
6-20
May 1998
UM340-1
ON-LINE OPERATION
Change and Store Setpoint
The controller must be in the Auto control mode to change the setpoint. If it is not, change the mode using
the preceding procedure.
1. Hold the magnetic screwdriver on the Z switch for at least 5 seconds. When the “SP” and “PB”
annunciators are both lit, remove the screwdriver from the switch. The displayed number is the active
setpoint value.
NOTE
If no action is taken within 1 minute, the display reverts to the process value. If that
occurs, repeat step 1 before proceeding.
2. To change the setpoint value to a new value:
• Touch the magnetic screwdriver repeatedly to the FS switch to increase the setpoint value in
0.01% increments of span or touch the magnetic screwdriver repeatedly to the Z switch to decrease
the set point in 0.01% increments of span.
• Alternatively, hold the magnetic screwdriver over either switch for more than 1 second. Setpoint
value increases or decreases rapidly as long as the switch is held.
NOTE
The new setpoint is not yet stored as the power up setpoint (PUSP) in the
transmitter. If the pushbutton mode is allowed to time out before storage is
accomplished (“PB” annunciator goes out), the controller operates with the new
setpoint, but will revert to the PUSP in the event of power-down.
3. To store the new setpoint in the transmitter as the PUSP, touch the magnetic screwdriver momentarily
to the D switch. The controller stores the setpoint value and returns to normal mode. This completes
the setpoint storage procedure.
Change and Store Valve Signal
The controller must be in Manual control mode to change the valve signal. If it is not, change the mode
using the “Change A/M Control Mode” procedure before proceeding.
1. Hold the magnetic screwdriver on the FS switch for at least 5 seconds. When the “V,” “%,” and “PB”
annunciators are lit, remove the screwdriver from the switch. The displayed number is the current valve
signal in percent.
NOTE
If no action is taken within 1 minute, the display reverts to the process value. Repeat
step 1 before proceeding.
Interpreting a valve open/close position depends upon knowing if the final control
element is configured as reverse or direct acting. For direct acting, 0% indicates a
fully closed valve and 100% indicates a fully opened valve. The opposite is true for
reverse acting.
May 1998
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ON-LINE OPERATION
UM340-1
2. To change the valve to a new value between -10% and 110%:
• Touch the magnetic screwdriver repeatedly to the FS switch to increase the percentage in 0.01%
increments or touch the magnetic screwdriver repeatedly to the Z switch to decrease the valve
signal in 0.01% increments.
• Alternatively, hold the magnetic screwdriver over either switch for more than 1 second. Valve
signal increases or decreases rapidly as long as the switch is held.
NOTE
The new valve signal is not yet stored permanently in the transmitter. If the
pushbutton mode times-out before storage is accomplished (“PV” annunciator
appears and process value is displayed), the controller operates with the new valve
signal, but will revert to the original valve signal in the event of power-down or
Master Reset.
To store the new valve signal in the transmitter, touch the magnetic screwdriver momentarily to the D
switch. The controller stores the valve signal and returns to normal mode. This completes the valve signal
storage procedure.
6.5 DISABLING THE MAGNETIC SWITCHES
The magnetic switches described above may be disabled using a jumper located on the optional Smart
Display board (see Figure 4-15).
To disable the magnetic switches, move the jumper to the DIS position.
If a Smart Display is not installed, then the magnetic switches cannot be disabled.
n
6-22
May 1998
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CALIBRATION AND MAINTENANCE
7.0 CALIBRATION AND MAINTENANCE
This section describes calibration, preventive maintenance, and troubleshooting. The Calibration section
contains procedures to calibrate a Model 340 and to eliminate any position-induced zero shift. The
Maintenance section has preventive maintenance procedures that are employed to protect the reliability of
the transmitter. Should a malfunction occur, procedures in the Troubleshooting section can help minimize
downtime. This section also includes transmitter removal and replacement procedures, recommended spare
and replacement parts, software compatibility, and return shipment instructions.
WARNING
In Division 1 areas, where an explosion-proof rating is required, remove power from
the transmitter before removing the transmitter’s enclosure cap for access to the
electrical terminal compartment.
7.1 CALIBRATION
A transmitter is calibrated at the factory and should not require field calibration, except to eliminate any
position-induced zero shift. Sections 7.1.2 and 7.1.3 describe field calibration, which is performed using a
Model 275 HART Communicator.
Transmitter calibration should be checked annually and the procedures in this section performed if the
transmitter is found to be out of tolerance.
7.1.1 Equipment Required
Prior to performing calibration, obtain the following:
• HART Communicator, which has built-in calibration programs
• Laboratory grade digital multimeter (DMM) for calibrating the 4 to 20 mA output signal
Voltmeter Section
Accuracy ±0.01% of reading
Resolution 1.0 mV
Input impedance 10 MΩ
Ammeter Section
Accuracy ±0.1% of reading
Resolution ±1 µA
•
•
Shunt resistance 15Ω or less
24 Vdc power supply; for bench calibration
Resistor 250Ω ±1%, carbon, ¼ watt; for bench calibration
Depending on whether bench or field calibration is to be done, make connections as shown in either Figure
7-1 or Figure 7-2.
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MAINTENANCE
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Digital
Milliammeter
Bench Power
Supply (DC)
_
X03036S0
+
+
250
_
Model 340
Terminals
Note:
Loop current can also be
displayed on optional
Smart Display in 0-100%.
_
+
TIE
I
O
FIGURE 7-1 Bench Test Connections
X03037S0
Digital
Milliammeter
+
_
Circuit
Junction
1
Controller,
Recorder,
Indicator, or
other 1-5 Vdc
Device
+
See Note 1
2
250
Model 340
Terminals
3
_
_
+
System Power
Supply
_
TIE
+
Notes:
1. Remove jumper between Circuit Junction terminals 1 and 2 and connect
DMM as shown. Reconnect jumper after disconnecting DMM.
I
O
2. Loop current can also be shown on transmitter's optional Smart
Display in 0-100%.
FIGURE 7-2 Field Test Connections
7-2
May 1998
UM340-1
CALIBRATION AND MAINTENANCE
7.1.2 Zero Trim
Model 340 transmitters are calibrated at the factory in a vertical position ( nameplate up). If a transmitter
is installed (or will be installed) in another orientation, it may need recalibration to eliminate positioninduced zero shift, depending upon transmitter type and direction of rotation. Maximum zero shift is 1.2
inches H2O (299 Pa).
Each time a transmitter is rotated from the orientation in which it was zeroed, there is the possibility of zero
shift and the need for re-zeroing. Zero shift can be predicted, as follows:
•
There is no zero shift with transmitter rotation as long as diaphragm orientation with respect to the
earth does not change.
For example, in the drawing below, rotating the transmitter 90° either clockwise or counterclockwise
from the nameplate-on-top reference orientation will not cause a zero shift because diaphragm
orientation with respect to earth has not changed.
MOORE
MOORE
Diaphragm
Plane
M O O R E
M O O R E
Diaphragm
Plane
MOORE
MOORE
Diaphragm
Plane
90° Counterclockwise Rotation
•
Reference Orientation
90° Clockwise Rotation
Maximum zero shift occurs when rotating the transmitter causes diaphragm orientation with respect to
the earth to be changed 90°.
Diaphragm
Plane,
Edge View
H
H
H
Diaphragm
Plane,
Edge View
90° Counterclockwise Rotation
Reference Orientation
Diaphragm
Plane,
Edge View
90° Clockwise Rotation
For example, in the drawing below, rotating the transmitter 90° either clockwise (terminal board end
down) or counterclockwise (display end down) from the nameplate-on-top orientation will cause
maximum zero shift because the diaphragm orientation changed from vertical to horizontal.
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7.1.2.1 Removing Zero Shift
Zero shift is easily removed by performing the following procedure. Prepare by performing the following
steps:
1. Mount the transmitter in its final mounting position (orientation).
IMPORTANT
A bench re-zeroing can be performed provided the transmitter is exactly positioned
(oriented) as it will be when installed in the field. However, field re-zeroing is more
accurate.
2. Pipe the transmitter and adjust applied pressures.
•
Model 340D Differential Pressure Transmitter - For best performance, NO pressures, other than
atmospheric, should be applied to the transmitter’s process HIGH and LOW input pressure ports
unless used in a process that has a constant measurable static pressure. In this case perform this
procedure at the operating static pressure.
For field mounted differential pressure transmitters with piping connected to the LOW pressure
port, the manipulation of piping valves and/or drains may be needed to ensure the appropriate
requirement is met.
•
Model 340A Absolute Pressure Transmitter - To zero the transmitter, a full vacuum must be pulled
on the transmitter. A zero off-set will occur with less than a full vacuum.
3. Connect the HART Communicator to the transmitter and
apply power.
4. From the Online menu, press “2” on the keypad to access the
Calibrate/Test menu. From the Calibrate/Test menu, press
“2” to access the Calibrate menu (at right).
If the transmitter zero is being calibrated at the bench, be sure
the transmitter is positioned exactly as it will be when
installed.
MPCO 340A:PT100
Calibrate
1->Zero trim
2 Calibrate DAC
3 On-Line Zero
5. Press “1” on the keypad or press the RIGHT
ARROW/SELECT key to access the Zero trim menu.
HELP |SAVE |HOME
çz
6. The Communicator displays the message “WARN–Loop
should be removed from automatic control.” If it is
permissible to do this, do so, and press OK (F4). If not, press
ABORT (F3) to terminate this procedure.
7. If OK was pressed, the Communicator displays the message “WARN–This will affect sensor
calibration.” Press OK (F4) to continue or press ABORT (F3) to terminate this procedure without
calibrating the sensor zero.
If OK was pressed, the Communicator displays “Apply 0 input to sensor.” Make sure 0 input is being
applied to the transmitter, then press OK (F4).
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May 1998
UM340-1
CALIBRATION AND MAINTENANCE
8. The Communicator automatically re-zeros the sensor while displaying the message “Sensor input
stabilizing.” It then displays “Sensor zero succeeded” followed by “NOTE–Loop may now be returned
to automatic control.” This signifies that the zero has been adjusted correctly.
To terminate the procedure, do not change the input and press ABORT (F3).
9. Return the loop to automatic control if necessary, then press OK (F4) to return to the Calibrate menu.
This completes the zero trim procedure.
7.1.3 On-Line Zero Adjust
In some processes, the zero reference can change, for example, due to uneven changes of product density in
the impulse piping. On-line zero adjustment changes the zero reference by a percentage of span while
process pressure is applied to the transmitter.
The on-line zero adjust also is very useful for zeroing absolute transmitters when a good vacuum pump is
not available.
1. Establish communication between the Communicator and
transmitter. Refer to Section 3.2 as necessary.
2. From the Online menu, press “2” to display the
Calibrate/Test menu. Press “2” to display the Calibrate menu.
3. Press “3” to begin the On-Line Zero process. The
Communicator displays the message “Enter adjustment
amount” (at right).
4. Enter the desired zero adjustment as a percent of span, then
press ENTER (F4) to confirm the entry.
5. The Communicator displays the message “Is PV sufficiently
adjusted?” Press “1” for YES to complete on-line zero
adjustment, or press “2” for NO.
MPCO 340A:PT100
Enter adjustment
amount
0.00%
1.0 %
HELP |DEL
|ABORT |ENTER
6. Pressing NO returns the display to that shown in step 3. Enter
a new value for the zero adjust and repeat step 5.
7.1.4 Calibrate Digital-to-Analog Converter (DAC)
Calibration of the DAC is not normally required and should be performed only after all other options have
been exhausted. Bench calibration is recommended; perform steps 1 through 15.
1. Disconnect the transmitter from the process by performing the steps in Section 7.6.
NOTE
Removing a transmitter can interrupt power to other transmitters powered from a
common power source. Note the effect this can have on process control and
operation and, if necessary, follow the proper procedures to shut down the
process.
When disconnecting the LOOP leads, carefully insulate each lead as it is removed
to prevent accidental shorts.
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MAINTENANCE
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2. Remove the enclosure cap to access the terminal compartment.
3. Connect the HART Communicator and DMM to the loop as shown in either Figure 7-1 or 7-2. Set the
DMM to measure 4-20 mA.
4. Establish communication between the Communicator and transmitter. Refer to Section 3.2 as
necessary.
Be sure the polling address is set to 0. Refer to Section 6.1.1.5 as necessary.
5. From the Online menu, press “2” to display the Calibrate/Test menu. Press “2” to display the Calibrate
menu.
6. Press “2” to begin the Calibrate DAC process. The Communicator displays the message “WARN–
Loop should be removed from automatic control.” If it is permissible to do this, do so, and press OK
(F4). If not, press ABORT (F3) to terminate this procedure.
7. If OK was pressed, the Communicator displays the reminder message “Connect reference meter.” If
necessary, press ABORT (F3) to terminate the procedure and make the meter connection. Return to
step 3 and start over.
8. If OK was pressed, the Communicator displays “Setting fld
dev output to 4 mA.” Press OK (F4) to continue or press
ABORT (F3) to terminate the procedure.
9. Observe the DMM reading, type the reading on the screen
displayed (at right), and press ENTER (F4) to confirm the
value. Press ABORT (F3) to terminate the procedure without
calibrating the DAC.
10. The Communicator displays a confirmation message “Fld dev
output 4.000 mA equal to reference meter?” If this is true,
press “1” to indicate YES. If it is false, press “2” to indicate
NO.
MPCO 340A:PT100
Enter meter value
4.000
HELP |DEL
|ABORT |ENTER
If the answer NO is selected, the display goes back to the one
shown in step 9. Enter the correct value and proceed.
11. After completing the 4.000 mA calibration, the
Communicator displays the message “Setting fld dev output
to 20 mA.” Press OK (F4) to continue or press ABORT (F3)
to terminate the procedure.
12. Observe the DMM reading, type the reading on the screen
displayed (at right), and press ENTER (F4) to confirm the
value. Press ABORT (F3) to terminate the procedure without
calibrating the DAC.
13. The Communicator displays a confirmation message “Fld dev
output 20.000 mA equal to reference meter?” If this is true,
press “1” to indicate YES. If it is false, press “2” to indicate
NO.
MPCO 340A:PT100
Enter meter value
20.00
HELP |DEL
|ABORT |ENTER
If the answer NO is selected, the display goes back to the one
shown in step 12. Enter the correct value and proceed.
14. After completing the 20.000 mA calibration, the
Communicator displays the message “Returning fld dev to
7-6
May 1998
UM340-1
CALIBRATION AND MAINTENANCE
original output” followed by the “Loop may be returned to
automatic control.” Press OK (F4) to continue and terminate
the procedure.
15. Disconnect the test equipment, reconnect the jumper on the
circuit junction terminals (Figure 7-2), and if necessary return
the polling address to the appropriate value.
This completes calibration of the transmitter.
7.2 PREVENTIVE MAINTENANCE
Preventive maintenance consists of periodic inspection of the transmitter, cleaning the external surface of
the transmitter’s enclosure, draining condensate from conduit, and blowing-down or purging impulse piping
to keep it free of sediment. Preventive maintenance should be performed at regularly scheduled intervals.
7.2.1 Tool and Equipment Requirements
The following tools and equipment are required for servicing:
•
Set of Phillips and flat-blade screwdrivers.
•
Set of open-end or box-end wrenches.
•
Torque wrench (30 ft-lbs), 11/16" socket; used for connection block bolts.
•
Digital multimeter (DMM); see Section 7.1.1 for specifications
7.2.2 Transmitter Exterior Inspection
The frequency of the inspection will depend on the severity of the transmitter’s environment.
1. Inspect the exterior of the transmitter enclosure for accumulated oil, dust, dirt, and especially any
corrosive process over-spray.
2. Check that both enclosure caps are fully threaded onto the enclosure, compressing the O-ring between
the cap and the enclosure. The O-ring must not be cracked, broken, or otherwise damaged.
3. If an optional Smart Display is installed, inspect the protective viewing glass for cleanliness and
damage. Replace a cracked or punctured glass; see Section 7.4 and the Parts List at the back of this
Manual.
4. Inspect both enclosure electrical conduit entrances for possible moisture leaks. An unused conduit
entrance must be plugged and sealed. Inspect the cable clamps of all watertight cable conduits for loose
clamps and deteriorated sealing material. Tighten clamps and reseal as necessary.
5. If a conduit drain is installed, inspect the drain seals for obstructions.
6. If subjected to vibration, inspect all transmitter and mounting bracket hardware for tightness. Tighten
loose hardware as necessary. Consider steps to reduce vibration.
7. Inspect process connection blocks for evidence of leakage, both at the impulse pipe connections and at
the block interface to the transmitter end caps. If necessary, add sealant to pipe threads, tighten block
bolts, and replace block TFE/PTFE seals.
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MAINTENANCE
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7.2.3 Transmitter Exterior Cleaning
After an exterior inspection of the transmitter, the enclosure can be cleaned with the transmitter operating.
1. Clean the enclosure (except enclosure cap glass) and process manifold with a mild, nonabrasive liquid
detergent, and a soft bristle brush, sponge, or cloth. Rinse the weatherproof enclosure with a gentle
spraying of water.
If the transmitter is subjected to heavy process over-spray, keep the enclosure free of excessive
accumulation of process residue. Hot water or air may be used to flush away process residue if the
temperature of the cleaning medium does not exceed the operating temperatures of the transmitter as
listed in Section 9.3.4 Environmental.
2. Clean enclosure cap glass with a mild, nonabrasive liquid cleaner and a soft, lint-free cloth.
7.2.4 Transmitter Enclosure Interior Inspection
WARNING
Do not open the transmitter enclosure in an area where there may be risk of
explosion or where process or environmental substances can contaminate the
transmitter interior.
Remove the two enclosure caps periodically to inspect the interior of the transmitter enclosure. No
accumulation of dust, dirt, or water (condensate) should be present inside the enclosure. If condensate is
present, install a conduit drain (see Figure 4-16).
Check that all wire connections are tight.
Enclosure threads must be coated with a wet, paste-type, anti-seize compound such as Never-Seez by
Emhart Bostik. Inspect the enclosure O-ring for damage.
7.2.5 Transmitter Calibration
An annual calibration check should be performed to ensure that the transmitter is within specifications.
Refer to Section 7.1 for details.
7.2.6 Impulse Piping
To ensure accuracy and continued satisfactory performance, impulse piping must be kept clean and
inspected for damage.
Sediment or other foreign particles must not clog or collect in piping or the pressure chamber of the process
manifold’s process connection blocks. A build up of residue can cause faulty measurement.
1. Inspect impulse piping for loose, bent, or cracked piping. Replace damaged piping.
2. At regular intervals, blow down the piping without passing line fluids containing suspended solids
through the process manifold’s process connection blocks.
The time interval between blowdowns is determined by the user’s previous experience with such
systems or determined by evaluating system performance only after the transmitter has been in
operation for a period of time.
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May 1998
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CALIBRATION AND MAINTENANCE
7.3 TROUBLESHOOTING
This Section provides guidance and procedures to assist in identifying and correcting a malfunctioning
transmitter. Section 7.2.1 lists needed tools and equipment.
It is recommended that all documentation associated with the transmitter, including piping and loop wiring
diagrams and configuration documentation, be obtained and made available to maintenance personnel to
facilitate troubleshooting.
The most common symptom of a malfunctioning transmitter is incorrect, erratic, or no output. A
malfunction can affect the transmitter’s analog output (4-20 mA) or its digital (HART) output.
Furthermore, a malfunction can be the result of external forces and not a transmitter fault at all. Section
7.3.1 discusses troubleshooting techniques for the analog output. Section 7.3.2 discusses troubleshooting
techniques for the digital output. Section 7.3.3. describes verifying a true transmitter failure should Section
7.3.1 or 7.3.2 not yield desirable results.
7.3.1 Analog Output
An analog output problem can appear as one of the following:
• No output or very low output. – There is no transmitter output or the output remains low despite
changes in the process.
• High output. – Transmitter output remains high despite changes in the process.
• Erratic output. – Transmitter output varies when process does not.
• Sluggish Response – Transmitter seems to respond to process changes very slowly.
Often an analog output problem is caused by incorrect transmitter configuration or by something external
to the transmitter. The following list shows possible causes and corrective actions for these problems. If
reviewing this list and performing applicable corrective actions does not remedy the problem, proceed to
Section 7.3.3 Diagnosing a Defective Transmitter.
Check Impulse Piping
• Check that high and low pressure pipe connections are not reversed.
• Check for leaks or blockage.
• Check for entrapped gas in liquid lines or for liquid in dry lines.
• Check for sediment in transmitter’s process connection blocks.
• Check that blocking valves are fully open and that bypass valves are tightly closed.
• Check that the density of the fluid in piping is unchanged.
Check Loop Power Supply/Wiring
• Check loop power supply for blown fuse or tripped circuit breaker.
• Check for 10 Vdc minimum across loop +/- terminals in transmitter terminal compartment.
• Check power supply output voltage: 15 Vdc minimum; 42 Vdc maximum.
• Check polarity of loop wiring at both power supply and transmitter.
• Check for loose or broken loop wiring at power supply terminals, supply barriers (if used), junction
boxes, and transmitter terminal compartment.
• Check for disconnected or broken current sense resistor.
• Check for short between shield and loop + wire.
• Check for accumulation of moisture in transmitter terminal compartment.
• Check loop cable for proper type and length.
• Check for electrical interference between the loop cable and any adjacent cables in a cable tray or
conduit.
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MAINTENANCE
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Check Transmitter Configuration
• Check for proper operating mode: analog, address 0; digital, address 1-15.
• Check controller status: on or off.
• Check characterizer status: on or off.
• Check for appropriate transfer function.
• Check zero dropout value.
Check for a Transmitter Stuck in Override Mode
• Re-enter Loop Override from HART Communicator Online menu and properly exit Loop Override
Mode.
Check for Variable Process Fluid Flow
• Install mechanical dampers in process pressure piping.
• Select a higher damping value (software filter time constant).
Check Primary Element
• Check that primary element is correctly installed.
• Check element for damage and leaks.
• Note any changes in process fluid properties that can affect output.
7.3.2 Digital Output (Communication)
A malfunctioning digital output can indicate a defective communication circuit. More commonly, however,
these problems are caused by an incorrect or poor installation. It is possible to install a transmitter such
that the 4-20 mA signal is correct, yet the digital HART signal is not.
The most common symptom of a communication problem is the inability to locate a transmitter on the loop
using a HART Master Device, such as the HART Communicator. Typical messages from the HART
Communicator include: device disconnected, no device found, or communication error.
If communication problems occur, check the following. Refer to the specifications in Section 9 as
necessary.
• Check that loop resistance is >250Ω, <1100Ω.
• Check that electrical noise on loop is not excessive: power supply ripple should not exceed 12 mVp-p.
• Check that there are no high inductance devices in the loop (I/P for example). Install a HART
communication filter across such a device.
• Check that the power supply voltage is high enough for the installed total loop resistance. Refer to
Section 4.
• Refer to Section 4 and confirm that loop cable length is not excessive.
• Check that the HART Master is connected across a load.
7.3.3 Diagnosing a Defective Transmitter
Should the above not remedy the problem, the sensor assembly or electronics module may have failed.
If the failure permits HART communication, use the HART Communicator to access the transmitter.
Microprocessor based self-diagnostic tests continuously examine the sensor assembly and electronics
module.
Perform the procedure below to access the diagnostic displays and determine if a fault exists.
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May 1998
UM340-1
CALIBRATION AND MAINTENANCE
1. If not already in communication with the suspect transmitter, establish communication (see Section
3.2).
2. Press the Quick Access Key and then press “2” to view the Status Menu. If “FAILSAFE” is displayed
the transmitter has entered the failsafe mode.
3. From the Status menu, press “2” to obtain a list of errors. Note which of the error messages in the table
below is displayed (multiple errors can be displayed).
4. Confirm that the fault still exists. Press the Quick Access Key again to return to the Online menu.
Activate the selftest function by choosing “2” Calibrate/Test, then press “1” to perform a self-test. The
transmitter will display a warning message, then perform the test.
• If the fault was temporary – possibly as a result of excessive electrical noise or a power line spike
– the Communicator will display “Transmitter PASSED transmitter selftest.” If the transmitter
passes the selftest, it automatically exits the failsafe mode and resumes normal operation. No
further action is required.
• If the fault remains, the Communicator displays the message “Transmitter FAILED transmitter
selftest.” Repeat the test for additional confirmation. If the transmitter fails again, consult the table
below and perform the appropriate corrective action.
CODE
PROBABLE CAUSE
CORRECTIVE ACTION
E2 ROM
ROM CHECKSUM match failed.
Replace electronics module.
E3 RAM
Microprocessor failed, RAM inoperative.
Replace electronics module.
E4 EPROM
Microprocessor cannot retain
configuration or calibration data
Reconfigure/recalibrate transmitter.
Perform transmitter self-test (step 4). If
self-test fails, replace transmitter.
E5 TIMER
A major cycle interrupted itself.
Replace electronics module.
E6 SENSOR
CHECKSUM match failed. Database
Rev. No. does not match software Rev.
No.
Replace sensor assembly.
If a Smart Display is installed on the transmitter it will display the word “FAIL” if any one of these
error codes is detected.
7.3.3.1 Additional Troubleshooting for Electronics Module Failure
Establish communications between the HART Communicator and transmitter, then check transmitter
status.
If transmitter status checks OK, exit the Status menu to the Online menu and select Loop Override. Verify
the loop by setting the output current to 4, 12, and then 20 mA (read current on Smart Display or ammeter
connected to the loop).
If selected loop currents are significantly out of tolerance, or loop current cannot be set, replace the
electronics module (see Section 7.4.1). If the transmitter passes the loop override test, continue
troubleshooting.
All Model 340 electronic modules are interchangeable. Try substituting an electronics module from a
known good transmitter or from spare parts stock. This may require reconfiguration of the transmitter.
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7.3.3.2 Additional Troubleshooting for a Sensor Assembly
The sensor assembly cannot be independently field tested because special pressure generating/measuring
equipment, instrumentation, and software are required to confirm operational integrity. The procedures
below, consisting of a combination of transmitter self-diagnostics and a known particular symptom, and
electronics module substitution, can be used to confirm a sensor assembly problem.
First, if “Transmitter FAILED transmitter selftest” is displayed by the HART Communicator, perform the
following:
1. Check for obvious physical damage to the sensor assembly or evidence of a loss of fill fluid.
2. Use the Quick Access Key to reach the Status\Errors Menu. If the sensor assembly EEPROM has
failed, the message “E6 SENSOR” will display.
3. Transmitter self-diagnostics may not report a failure of the sensor assembly or enhanced mode
oscillator (EMO). To identify this type of failure:
• From the Errors display, press the LEFT ARROW/PREVIOUS MENU key, followed by “1” on
the Communicator keypad to display the MV (item 2 on the menu) and Current (item 6 on the
menu). If the EMO or sensor has failed, the values of the MV and I are as follows:
– MV is equal to -156.7% of the sensor assembly’s upper range limit as listed in Section 9.3
Specifications.
– I 3.84 mA (if URV > LRV) or 21.6 mA (if URV < LRV)
Example
This example illustrates the MV displayed in the event of failure of transmitter with a Range D sensor
assembly (URL +450 inH2O). For a sensor input block configured for one of the following MV units,
the corresponding - 156.7% value is listed:
MV UNITS
URL
MV at Failure
PSI
16.25 PSI
-25.4 PSI
inHg
33.7 inHg
-52.8 inHg
mmHg
842.4 mmHg
-1320.0 mmHg
inH20
450 inH2O
-705 inH2O
If defective, the entire sensor assembly must be replaced (see Section 7.4.2).
4. If steps 1 and 2 do not confirm a sensor assembly defect, replace the electronics module with an onhand spare (see Section 7.4.1). If the problem still exists and all other loop elements and wiring have
been thoroughly tested, return the transmitter for repair.
7.4 ASSEMBLY REMOVAL AND REPLACEMENT
The Smart Display, sensor assembly, electronics module, and terminal board are not user-serviceable. To
replace the Smart Display, follow the procedure given in Section 4.6.1.
This section describes removal and replacement of the electronics module, sensor assembly, and terminal
board. These procedures can be accomplished easily with standard hand tools (see Section 7.2.1 for a list
of tools).
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CALIBRATION AND MAINTENANCE
7.4.1 Replacing the Electronics Module
Replacing the electronics module requires reaching inside the enclosure. Since the sensor assembly cable is
short, and space is tight, use care when engaging the keyed connectors.
1. If present, remove the Smart Display as described in Section 4.6.1.
2. Gently pull the electronics module forward (i.e. out of the enclosure) until the sensor assembly cable
can be grasped with thumb and forefinger. While holding the cable, pull the electronics module until it
disengages from the sensor cable. Refer to Figure 4-15 as necessary.
3. Set the electronics module aside in an electrostatic protective container. Remove the new electronics
module from its container.
4. Carefully align the keyed connector on the sensor assembly sensor cable with the jack on the back of
the new electronics module. Press the connector into the jack until it is seated fully.
5. Align the tubular extensions on the electronics module cup with the two RFI feed-through pins inside
the enclosure. Press in and gently rock the electronics module until it can be pressed in no farther.
6. Install the Smart Display and enclosure cap. Power and configure the transmitter. Use the optional
Smart Display or the HART Communicator (Section 5) to ensure that the electronics module is
functioning correctly.
7.4.2 Sensor Assembly Removal and Replacement
The sensor assembly is not field repairable. It must be replaced if defective. The transmitter must be
removed to a workbench to accomplish removal and replacement.
Removal
1. If the transmitter is controlling a process, use the proper procedures to shut down the process. Turn off
power to the transmitter.
2. Close all appropriate impulse piping valves to isolate the process from the sensor assembly.
3. Disconnect the impulse piping from the sensor’s high and low pressure end caps and separate the pipes
from the caps. Drain process fluid from the sensor.
4. Unscrew the rear enclosure cap protecting the terminal board compartment.
5. Tag and disconnect the wires at the terminal board.
6. Disconnect the conduit from the transmitter enclosure and pull the wires free of the enclosure. Replace
the rear enclosure cap.
7. Disconnect the transmitter from its mounting bracket and remove it to a workbench.
8. Clamp the end cap portion of the sensor assembly in a bench vise with the transmitter in an upright
position. Use wood blocks to protect the end caps from being damaged by the vise.
9. Remove the enclosure cap for access to the electronics module. If an optional Smart Display is
installed, remove it as described in Section 4.6.1. Store the Smart Display in a static protective bag.
10. Pull the electronics module just clear of the enclosure and, while holding the sensor assembly sensor
cable P1 connector firmly in one hand and the electronics module in the other, pull the two apart.
11. From inside the enclosure compartment, remove the enclosure positioning limit screw (10-32 Allen
head) and lockwasher from the sensor assembly’s tube. Retain screw and lockwasher.
May 1998
7-13
MAINTENANCE
UM340-1
12. Loosen the enclosure rotation set screw on the enclosure stem and gently pull the enclosure away from
the tube of the sensor assembly. An O-ring on the sensor assembly’s tube will offer some resistance to
pulling. To overcome this resistance, gently rotate the enclosure left and right while pulling. Set the
enclosure aside.
13. Clean any process fluid or other contamination from the sensor assembly, including the flange if a
340F model, and repack the entire assembly for return or disposal.
NOTE
Normally, the sensor assembly is not disassembled, but is replaced in its
entirety. A flanged sensor assembly is never field disassembled. If the sensor
assembly is disassembled for any reason, replace the TFE/PTFE seals (P/N 1596554) between the capsule and end caps, lubricating them on one side only with
Dow Corning No. 4 compound to hold them in place. Install the end caps.
Insert the four bolts and tighten in an “X” pattern – lower right, upper left,
lower left, upper right. Torque to 30 ft-lbs, then replace the sensor assembly as
described below.
Replacement
1. Unpack the replacement sensor assembly.
2. Refer to the Parts List exploded view drawing. Reposition the sensor assembly in the bench vise with
the sensor’s tube pointing up. Use wood blocks to protect the end caps from damage.
3. Carefully fit the sensor cable through the enclosure neck. Slowly slide the enclosure down on the sensor
assembly while rotating the enclosure left and right to overcome the resistance to the tube’s O-ring.
4. When the cable end appears in the enclosure, pull it toward the enclosure opening while continuing to
slide the enclosure over the sensor assembly. When a stop inside the enclosure is hit, positioning is
correct.
5. Retrieve and install the enclosure positioning limit screw previously removed, a 10-32 Allen head
screw and lockwasher.
6. Retrieve the electronics module and connect the sensor cable P1 connector to it.
7. Align the electronics module carefully on the RFI feed-throughs and press it in place.
8. If applicable, install the previously removed Smart Display (see Section 4.6.1).
9. Orient the enclosure and tighten the previously loosened set screw on the enclosure neck.
10. Replace the enclosure cap and tighten until O-ring seats.
11. If desired, perform mounting shift zero shift calibration (see Section 7.1) before field installation of the
transmitter.
12. Reinstall transmitter at field site by performing, in reverse, Removal steps 1 to 7. If not already done,
perform a zero shift calibration (see Section 7.1). Refer to Section 4 for installation connections.
13. Turn on system power and open valves to restore transmitter to service. Check all connections for
leaks.
CAUTION
Do not exceed the Maximum Overrange ratings when placing the transmitter into
service. Properly operate all shut-off and equalizing valves. Ratings are listed in
Section 9.
7-14
May 1998
UM340-1
CALIBRATION AND MAINTENANCE
14. Check transmitter configuration as described in Section 3.4.
7.4.3 Terminal Board Assembly Removal and Replacement
This procedure concerns replacing the terminal board assembly. Optionally, a terminal board assembly
may contain a transient suppressor. Be sure to install the correct type of terminal board assembly.
Removal
The terminal board assembly usually can be replaced at the installation site; if not, remove the transmitter
for bench servicing.
1. If the transmitter (controller version) is controlling a process, use the proper procedures to the shut
down the process.
2. Turn off the transmitter and remove the enclosure cap to access the terminal board.
3. Retrieve the wrist strap from the maintenance kit and snap it on wrist. Connect the ground clip to the
transmitter or mounting bracket.
4. Using a medium-size flat-blade screwdriver or a T-10 Torx® wrench, remove the terminal board
mounting screw (just above the Moore Products Co. logo).
5. Lift the terminal board straight out of the compartment.
6. Discard the defective board.
Replacement
1. Retrieve the wrist strap from the maintenance kit and snap it on wrist. Connect the ground clip to the
transmitter or mounting bracket.
2. Remove the replacement terminal board assembly from its packaging, carefully align it with the
enclosure casting and the two feed-throughs, and press firmly until it seats inside the enclosure.
3. Insert and tighten the terminal board mounting screw.
4. Replace the enclosure cap and tighten. If necessary, reinstall the transmitter in the field.
5. Restore power to the transmitter. Calibration is not required.
7.5 NON-FIELD-REPLACEABLE ITEMS
Certain components are not replaceable except at the factory. These are:
•
Enclosure cap display
viewing glass:
Agency regulations do not permit field replacement of a broken or
damaged glass as this would invalidate the enclosure’s explosion proof
rating. Replace the entire damaged enclosure end cap assembly.
•
RFI feed-throughs
Potted
7.6 TRANSMITTER REPLACEMENT
To replace a transmitter, refer to the procedure below and one or more of the following Sections in the
Installation section of this Manual:
•
4.4 Mechanical Installation, Models 340D, A, and G
•
4.5 Mechanical Installation, Model 340F
May 1998
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MAINTENANCE
•
4.6 Mechanical Installation, All Models
•
4.7 Electrical Installation
•
4.8 Hazardous Area Installations
UM340-1
WARNING
Before loosening process connections, be certain that process material will not cause
injury to personnel. Depressurize transmitter and drain process material as
necessary.
Removal
1. Remove power from transmitter. Close shut-off valves and open by-pass valves.
2. Remove the enclosure cap for access to the terminal board and disconnect the conduit and loop wiring.
Refer to Section 4.7 Electrical Installation. Replace the enclosure cap.
3. Disconnect the transmitter from the process. Refer to the Mechanical Installation section for the
transmitter at hand; see above list.
WARNING
Be certain that disconnecting transmitter from process will not release process
material.
1) Model 340D, A, and G – Disconnect all process piping (e.g., impulse piping or 3-valve manifold).
Then remove transmitter from mounting bracket.
2) Model 340F – Remove the transmitter from mating flange.
Replacement
1. Fasten transmitter to mounting bracket. Refer to Mechanical Installation section for transmitter at
hand.
2. Connect transmitter to process.
3. Connect conduit and loop wiring. Refer to Sections 4.6.2 Electrical Conduit and Cable Installation and
4.7 Electrical Installation.
4. Apply power to transmitter and configure. Refer to Section 6 On-Line Configuration and Operation.
5. Check all connections, then open shut-off valves and close by-pass valves.
7.7 MAINTENANCE RECORDS
An accurate record keeping system for tracking maintenance operations should be established and kept up
to date. Data extracted from the record may serve as a base for ordering maintenance supplies, including
spare parts. The record may also be useful as a troubleshooting tool. In addition, maintenance records may
be required to provide documentary information in association with a service contract. It is suggested that,
as appropriate, the following information be recorded:
1. Date of service incident
2. Name or initials of service person
3. Brief description of incident symptoms and repairs performed
4. Replacement part or assembly number
5. Software compatibility code of original part
6. Software code of replacement part
7-16
May 1998
UM340-1
7.
8.
9.
10.
11.
CALIBRATION AND MAINTENANCE
Serial number of original part
Serial number of replacement part
Issue number of original circuit module
Issue number of replacement circuit module
Date of completion
7.8 RECOMMENDED SPARE AND REPLACEMENT PARTS
The quantity and variety of spare parts is determined by how much time a transmitter can be permitted to
remain out of service or off line.
Replaceable parts are shown in the Parts List at the back of this manual. Consult the Parts List to select
spare parts to stock and to obtain spare and replacement part numbers. Contact the factory if assistance is
needed in determining quantity and variety of spare parts.
When ordering a part, provide the following information for the item, module or assembly to be replaced or
spared. This information will help ensure that a repair addresses the observed problem, and that a
compatible part is supplied.
1. Part number from Parts List or from a label on the assembly
2. The single-digit software revision level
3. Model and serial number from the transmitter’s nameplate
4. User purchase order number of original order, available from user records
5. New user purchase order number for the assembly to be replaced or spared
6. Reason for return for repair; include system failure symptoms, station failure symptoms, and error
codes displayed.
Returns should be packaged in original shipping materials if possible. Otherwise, package item for safe
shipment or contact factory for shipping recommendations. Refer to Section 7.10 to obtain a Return
Material Authorization (RMA) number.
IMPORTANT
The electronics module and Smart Display must be placed in static shielding bags to
protect them from electrostatic discharge.
7.9 SOFTWARE COMPATIBILITY
Transmitter software controls the transmitter’s operating routines and its HART communications with
loop-connected stations and gateways. When requesting technical information or during troubleshooting, it
often is necessary to know the transmitter’s software revision level. A single digit identifies the transmitter
software revision level.
To view the software revision level:
1. Establish communication with the transmitter (see Section 3.2).
2. From the Online menu, press the Quick Access Key.
3. From the Quick Access Key menu, press “2” to access the Status menu, then press “1.” to access the
Model Number menu.
4. The third item on the Model Number menu is the software revision number. If this number is not
displayed, press “3” to display the Software rev screen, then press EXIT (F4).
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UM340-1
5. Turn off the Communicator or press the Quick Access Key to return to the Online menu.
7.10 RETURN SHIPMENT
The return of equipment or parts for any reason must always be coordinated with the manufacturer. Should
it become necessary to make a return shipment, be sure to contact Moore Products Co. first and obtain
packaging information and carrier recommendations.
Equipment Return Within North America
To Return Equipment
• Call the Repair Service Group at (215) 646-7400, ext. 4RMA (4762) weekdays between 8:00 a.m. and
4:45 p.m. Eastern Time to obtain an RMA number. Mark the RMA number prominently on the outside
of the shipment.
• When calling for an RMA number, provide the reason for the return. If returning equipment for repair,
failure information (e.g., error code, failure symptom, installation environment) will be requested. A
purchase order number will be requested.
Material Safety Data Sheet
• A Material Safety Data Sheet (MSDS) must be included with each item being returned that was stored
or used anywhere hazardous materials were present.
Packaging
• Package assembly in original shipping materials. Otherwise, package it for safe shipment or contact the
factory for shipping recommendations. A module must be placed inside a static shielding bag to protect
it from electrostatic discharge.
Equipment Return Outside of North America
Contact the nearest Moore Products subsidiary. Provide the reason for the return. A purchase order number
will be requested. Request equipment packaging and shipping instructions.
n
7-18
May 1998
UM340-1
CIRCUIT DESCRIPTION
8.0 CIRCUIT DESCRIPTION
This section provides a basic circuit description of a Model 340 Pressure Transmitter-Controller. Figure 81 shows the functional block diagram, which consists of the sensor module and the electronics module.
The Model 340 Transmitter family consists of four model types: Differential Pressure (340D), Absolute
Pressure (340A), Gauge Pressure (340G), and Flange-Mounted Liquid Level (340F). All models use the
same interchangeable electronics module.
All Model 340 Transmitters can communicate with a HART Communicator or a Primary Master controller
using the HART protocol.
8.1 SENSOR ASSEMBLY
The sensor assembly is part of the sensor assembly, which includes the process diaphragms and process
end caps. The sensor assembly includes an electrically erasable programmable read-only memory
(EEPROM) chip, a custom application-specific integrated circuit (ASIC), and a capacitive pressure sensor
element.
During the characterization process at the factory, all sensor assemblies are subjected to a controlled series
of temperature and pressure cycles. Data recorded from the series is used to generate characterization
factors, which are stored in the sensor assembly’s EEPROM. The appropriate sensor range limits (Range
1, 2, 3, or 4) also are stored in the EEPROM. Because the characterization data is stored in EEPROM, no
calibration is required when replacing a sensor assembly.
The capacitive sensor element contains two silicon-based capacitors: a sense capacitor (Cs) whose value
changes in response to an applied process pressure, and a reference capacitor (Cr) whose value is
independent of pressure. Layers of glass and silicon are combined to form the capacitive sensor element.
These layers are anodically bonded to form a seal that is stronger than the glass itself and provides a
monolithic structure that is extremely stable and has no measurable hysteresis.
The custom ASIC, which is mounted on the header of the capacitive sensor element, contains oscillator,
amplifier, and buffer circuitry. The capacitive sensor element is part of the ASIC’s oscillator and forms an
enhanced multimode oscillator (EMO), which generates three frequencies based on the capacitive
measurements of Cs, Cr, and Cs+Cr. These frequencies are amplified and buffered by the ASIC and
presented as CMOS-compatible square wave outputs for processing by the electronics module.
8.2 ELECTRONICS MODULE
The electronics module, located in the transmitter’s enclosure, consists of one surface mount electronics
board attached to a plastic cup, which holds the board within the enclosure. A separate terminal board,
located on the opposite side of the enclosure dividing wall, contains surge and noise filter circuitry and may
include an optional transient suppressor board.
The electronics module consists of:
• Standard Bell 202 modem that uses the frequency shift keying (FSK) technique to communicate via the
HART protocol
May 1998
8-1
ACCURACY CALCULATIONS
Terminal
Board
UM340-1
Loop
+
_
4-20 mA and Bidirectional HART
Communication to Control System
X03072S0
Electronics Module
*R XA = HART received communications from loop
*T XA = HART transmission to loop
Comm. = Communication
Surge and
Noise Filter
FSK = Frequency Shift Keying
4-20 mA *TXA
Electronics Module
Loop
Supply
Voltage
*RXA
Power Supply
Current
Limiting
Low Voltage
DC
Low Voltage
Power Supply
Monitor
HART Comm.
Bandpass Filter
and Zero Cross
Detector
HART Comm.
FSK
Bell 202
Modem
R XA
Magnetic
Switches for:
Zero
Fullscale
Damping
RESET
RXD
TXD
Memory
Correction Data
Sensor Data
Microcontroller
Sensor
Linearization
Rerange
Damping
Configuration
Communication
CTRL
*TXA
Process
Pressure
Capacitive
Sensor
CS , C R
& CP
EMO ASIC
(Enhanced
Mode
Oscillator)
FO
MR, MT
Current Output
Serial D/A and
Voltage to
F/D ASIC
Current
(Frequency
Pulse
to Digital)
On/Off Converter
Sensor Assembly
FIGURE 8-1 Block Diagram, Electronics Module and Sensor Assembly
8-2
May 1998
UM340-1
•
•
•
•
•
•
CIRCUIT DESCRIPTION
Microcontroller that:
– Controls communications
– Corrects and linearizes the input pressure signal
– Stores configuration data in nonvolatile EEPROM, where it is retained when power is interrupted,
permitting the transmitter to become functional upon power-up
– Performs local operation and control functions entered by way of zero, fullscale, and damping
magnetic switches or from a HART Communicator
– Performs proportional-integral-derivative (PID) control functions (transmitter-controller only)
Custom ASIC that provides:
– A clock to the Microcontroller
– Frequency-to-digital conversion of the pressure signal from the sensor assembly
– Serial digital-to-analog (D/A) conversion of the sensor assembly’s signal to drive the voltage-tocurrent (V/I) converter
– Multiplexing of display information to the optional Smart Display
3.5 Vdc power supply with current limiting that provides DC operating power to the sensor assembly
and electronics module
Power supply voltage monitor that generates a Microcontroller reset signal when the network (loop)
supply voltage is interrupted
Bandpass filter that passes HART signals and rejects low-frequency analog signaling
Voltage-to-current (V/I) converter that converts the output of the ASIC’s D/A conversion to a 4-20 mA
loop output signal
8.3 THEORY OF OPERATION
The following description applies to all Model 340 transmitters since they operate similarly.
8.3.1 Pressure to Frequency Conversion
The process variable applied to the capacitive pressure sensor changes the value of the sensor’s Cs
capacitor, thereby generating a sense frequency (Fs) by the EMO that is directly proportional to the applied
pressure. The EMO uses the reference capacitor (Cr) and the sum of both capacitors (Cs+r) to generate
additional frequencies Fr and Fs+r. One at a time, each of the three frequencies is gated to the EMO ASIC
by digital commands from the electronics module.
8.3.2 Frequency to Digital Conversion
The first of the three frequencies (Fr, Fs+r, and Fs) generated by the EMO is applied to the ASIC. Two
counters in the ASIC count the time and number of cycles for each frequency. This data is stored and a
Mode Toggle (MT) command is sent to the EMO to switch to the next frequency. When all three
frequencies are stored, the Microcontroller shifts the data into its serial port.
The Microcontroller uses a specially developed algorithm that cancels the effects of parasitic capacitance
and calculates the true ratio Cr/Cs. When the ratio is equal to one (1), the pressure difference between the
two capacitors is known to be zero. A ratio less than one corresponds to a positive pressure difference and
a ratio greater than one to a negative pressure difference. The ratio is linearized and temperature corrected
to produce an accurate pressure signal, which is sent back to the ASIC for D/A conversion.
May 1998
8-3
ACCURACY CALCULATIONS
UM340-1
8.3.3 D/A Conversion and Current Signal Transmission
The pressure signal received by the ASIC is applied to a 16-bit D/A Converter and Multiplexer. The
Multiplexer sends serial clock and display information to the optional Smart Display board, where it is
decoded and displayed on the Smart Display as pressure in engineering units.
The D/A Converter translates the digitized pressure signal into a pulse width-modulated signal with a pulse
width directly proportional to the magnitude of the process pressure. The pulses are filtered and applied to
an operational amplifier, which drives a V/I converter, whose output is a Darlington transistor pair acting
as a pass transistor that outputs a standard 4-20 mA current signal to the network (output loop).
8.3.4 Communication Format
The Model 340 communicates, via the HART protocol, with the HART Communicator and any Primary
Master controller connected to the network.
HART communication uses phase-continuous frequency-shift-keying (FSK) at 1200 bits/sec and
frequencies of 1200 Hz (logic 1) and 2200 Hz (logic 0). HART communication is superimposed (AC
coupled) on the analog 4-20 mA signal. Because the digital signaling is high frequency AC, its DC average
is zero and does not interfere with analog signaling.
A 2-pole active filter connected to the loop input receives HART transmissions. The filter effectively rejects
low frequency analog signaling and other out-of-band interference, preventing a compromise of the digital
reception. The filtered signal is applied to a Zero Crossing Detector, which converts the filtered information
into clean pulses of uniform amplitude before introduction to the Bell 202 modem.
The modem receives and processes (e.g., demodulates) the serial FSK signal (Rxa) and outputs the signal
(Rxd) to the Microcontroller where serial to parallel conversion is performed.
In response to the received signal, the Microcontroller outputs a signal (Txd) to the modem where it is
modulated and fed into the feedback circuit of the V/I Converter for transmission (Txa) over the loop.
8.4 TRANSIENT SUPPRESSOR OPTION
The integral transient suppressor operates using a spark gap and zener diode to protect both the positive
and negative signal terminals from transient spikes.
Positive or Negative
Terminal Board
Terminal
Gas Filled
Spark
Gap
X03071S0
Zener
Diode
Internal Connection
To Electronics Module
Transmitter Enclosure
Connected to Earth Ground
The spark gap is capable of conducting large amounts of current, but its response time is long compared to
the rise time of most transients. The faster zener diode begins conducting during the rapidly rising portion
of the transient, with the current flow through the zener diode limited by the inductor.
Once the spark gap begins to conduct, the current flow through the zener diode is reduced and the large
transient current flows from the signal terminal, through the spark gap, to the transmitter enclosure. The
spark gap continues to conduct until the current falls below 0.5 amperes.
n
8-4
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
9.0 MODEL DESIGNATIONS AND SPECIFICATIONS
This section contains the model designation tables, a comprehensive accessory list, functional and
performance specifications, and hazardous area classifications for Model 340 Pressure Transmitters.
IMPORTANT
Before installing, calibrating, troubleshooting or servicing a transmitter
review this section carefully for applicable specifications and hazardous
area classifications.
9.1 MODEL DESIGNATIONS
Tables 9-1 through 9-6 identify each model designation entry on a transmitter’s nameplate. The nameplate
also carries other important transmitter information in addition to the model designation:
• Bill of material number (B/M)
•
Serial number
•
Span limits
•
Maximum working pressure (MAX. WPR)
•
Factory calibration (FCTY CAL)
•
Certifications
•
User-supplied TAG
IMPORTANT
Confirm transmitter model by referring to the transmitter’s model
designation on its nameplate and in Tables 9-1 through 9-6 before
installing, applying or removing power, configuring or servicing.
NOTES FOR TABLES 9-1 THROUGH 9-6
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
Standard for all ranges
Stock model selection
NACE MR0175-96 compliance requires this option
Describe the modification or provide a quotation reference number
Required selection for OUTPUT option “D”, direct connection to Model 348 Field Mounted Controller
Not available with FM/CSA approvals
Standard on Input Ranges A and B
Standard on Input Ranges D and F
Must specify Body Parts Code “RR”
Must select Body Parts “AA”
Not available with Input Range A
Not available with Input Range A or B
Available with Body Parts “TD” or “TE” only
CENELEC EExd units are available only with OUTPUT code “B”
2" flanges with an extension will fit into Schedule 40 and larger I.D. pipes
3" and 4" flanges with an extension will fit into Schedule 80 and larger I.D. pipes
(16) B8M (316 SS) bolting has a reduced pressure rating - consult Moore Products Co.
May 1998
9-1
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
TABLE 9-1 Model 340D, Model Designation
Basic Model Number
340D Differential Pressure Transmitter-Controller
Notes: Superscript (#) - See page 9-1 for these notes.
Input Range: Span Limits, Min/Max
A horizontal line connects to additional selections.
A 0.2/5 inH2O (0.05/1.25 kPa)(10)
B 0.75/15 inH2O (0.185/3.7 kPa)(2)
D 10/450 inH2O (2.5/112.5 kPa)(2)
F 12.6 psi/450 psi (87/3100 kPa)(2)
Output
B 4-20 mAdc with HART protocol(1)(2)
C 4-20 mAdc with HART protocol and integral Transient Suppressor
D Direct Connection to Model 348 Field Mounted Controller or Spare Capsule
Process Diaphragm
H Hastelloy C-276(2)(8)(11)
S 316L SS(2)(7)
A Hastelloy C-276 with 2 Remote Seals(9)(11)
B Hastelloy C-276 with 1 Remote Seal on high side(9)(12)
C Hastelloy C-276 with 1 Remote Seal on low side(9)(12)
Body Parts
Wetted Vent/Drain Process Connection
Wetted
Vent/Drain Proc. Conn.
AA 316 SS End
½ NPT(1)(2)(3)
BA Hastelloy C-276 End
½ NPT
AB 316 SS Side (top)
½ NPT(3)
BB Hastelloy C-276 Side (top)
½ NPT
AC 316 SS Side (bottom) ½ NPT(3)
BC Hastelloy C-276 Side (bottom) ½ NPT
AD 316 SS Side (dual) ½ NPT(3)
BD Hastelloy C-276 Side (dual) ½ NPT
AE 316 SS End
¼ NPT(3)
BE Hastelloy C-276 End
¼ NPT
AF 316 SS Side (top)
¼ NPT(3)
BF Hastelloy C-276 Side (top)
¼ NPT
AG 316 SS Side (bottom) ¼ NPT(3)
BG Hastelloy C-276 Side (bottom) ¼ NPT
AH 316 SS Side (dual) ¼ NPT(3)
BH Hastelloy C-276 Side (dual) ¼ NPT
RR Remote Seals
Fill Fluid
B Silicone DC200(1)(2)
C Inert(11)
D Paratherm(11)
Output Indicator
5 4-½ Digit Digital Smart DisplayTM(2)
N Not Required(5)
Standard Options
D B7M Bolts(3)
X
Oxygen Cleaned
E B8M Bolts(16)
Y
Special Features(4)
N Not Required(2)(5)
Mounting Bracket
1 2" Pipe Mount Bracket with SS Hardware(2)
2 Universal Bracket
3 2" Pipe Mount 316SS Bracket
N Not Required(5)
Housing
1 Aluminum ½ - 14 NPT(1)(2)
2 Aluminum M20 x 1.5(6)
N Not Required(5)
Hazardous Area Classification
2 CSA All/CRN Registration
3 FM/CSA All(1)(2)
M CENELEC EExd(14)
R SAA All and ABS Type Approved
L CENELEC EExia and BASEEFA Type N
N Non-Approved
W FM/CSA All and ABS Type Approved
340D A
9-2
A
H
AA B
5
N
N
1
3
Sample Model Number
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
TABLE 9-2 Model 340A, Model Designation
Basic Model Number
340A Absolute Pressure Transmitter-Controller
Note: Superscript (#) - See page 9-1 for these notes.
Input Range: Span Limits, Min/Max
D
10/450 inH2O abs (2.5/112.5 kPa abs)
F
12.6/450 psia (87/3100 kPa abs)
Output
B
4-20 mAdc with HART protocol(1)
C
4-20 mAdc with HART protocol and integral Transient Suppressor
D
Direct Connection to Model 348 Field Mounted Controller or Spare Capsule
Process Diaphragm
H
Hastelloy C-276(1)
S
316L SS
B
Hastelloy C-276 with 1 Remote Seal (specify AA for Body Parts)
Body Parts
Wetted
Process Connection
AA
316 SS
½ NPT(1)(3)
BA
Hastelloy C-276 ½ NPT
Fill Fluid
B Silicone DC200(1)
C Inert
D Paratherm
Output Indicator
5 4-½ Digit Digital Smart DisplayTM
N Not Required(5)
Standard Options
X Oxygen Cleaned
Y Special Features(4)
N Not Required(5)
Mounting Bracket
1
2" Pipe Mount Bracket with SS Hardware
2
Universal Bracket
3
2" Pipe Mount 316SS Bracket
N Not Required(5)
Housing
1 Aluminum ½ - 14 NPT(1)
2 Aluminum M20 x 1.5(6)
N Not Required(5)
Hazardous Area Classification
2 CSA All/CRN Registration
3 FM/CSA All(1)
M CENELEC EExd(14)
R SAA All and ABS Type Approved
L CENELEC EExia and BASEEFA Type N
N Non-Approved(5)
W FM/CSA All and ABS Type Approved
340A
F
May 1998
A
H
AA
B 5 N
N
1
3
Sample Model Number
9-3
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
TABLE 9-3 Model 340G, Model Designation
Basic Model Number
340G Gauge Pressure Transmitter-Controller
Note: Superscript (#) - See page 9-1 for these notes.
Input Range: Span Limits, Min/Max
D
10/450 inH2O (2.5/112.5 kPa)(2)
F
12.6/450 psig (87/3100 kPa) (2)
G
300/5500 psig (2008/37920 kPa) (2)
Output
B
4-20 mAdc with HART protocol(1)(2)
C
4-20 mAdc with Hart protocol and integral Transient Suppressor
D
Direct Connection to Model 348 Field Mounted Controller or Spare Capsule
Process Diaphragm
H
Hastelloy C-276(1)(2)
S
316L SS
B
Hastelloy C-276 with 1 Remote Seal (specify AA for Body Parts)
Body Parts
Wetted
Process Connection
AA
316SS
½ NPT(1)(2)(3)
BA
Hastelloy C-276 ½ NPT
Fill Fluid
B
Silicone DC200(1)(2)
C
Inert
D
Paratherm
Output Indicator
5 4-½ Digit Digital Smart DisplayTM(2)
N Not Required(5)
Standard Options
X Oxygen Cleaned
Y Special Features(4)
N Not Required(5)
Mounting Bracket
1 2" Pipe Mount Bracket with SS Hardware(2)
2 Universal Bracket
3 2" Pipe Mount 316SS Bracket
N Not Required(5)
Housing
1 Aluminum ½ - 14 NPT(1)(2)
2 Aluminum M20 x 1.5(6)
N Not Required (5)
Hazardous Area Classification
2 CSA All/CRN Registration
3 FM/CSA All(1)(2)
M CENELEC EExd(14)
R SAA All and ABS Type Approved
L CENELEC EExia and BASEEFA Type N
N Non-Approved(5)
W FM/CSA All and ABS Type Approved
340G
9-4
F
H
A
A
B
5
N
N
1
3
Sample Model Number
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
TABLE 9-4 Model 340F, Model Designation
Basic Model Number
340F Flanged Differential Level Transmitter-Controller
Notes: Superscript (#) - See page 9-1 for these notes.
Input Range: Span Limits, Min/Max
A horizontal line connects to additional selections.
D 10/450 inH2O (2.5/112.5 kPa)(2)
F 12.6/450 psi (87/3100 kPa)(2)
Output
B 4-20 mAdc with HART protocol(1)(2)
C 4-20 mAdc with HART protocol and integral Transient Suppressor
Body Parts (HA = Hastelloy) (S = Standard on all ranges)
Hi Side Dia/Wet Lo Side Dia/Wet Extens. Lgth.
Hi Side Dia/Wet Lo Side Dia/Wet Extens. Lgth.
A0 316SS
HA C-276/316SS Flush(1)(2)
H0 HA C-276
Remote Seal
Flush
A2 316SS
HA C-276/316SS 2"
H2 HA C-276
Remote Seal
2"
A4 316SS
HA C-276/316SS 4"
H4 HA C-276
Remote Seal
4"
A6 316SS
HA C-276/316SS 6"
H6 HA C-276
Remote Seal
6"
B0 HA C-276
HA C-276/316SS Flush
J0 Monel
Remote Seal
Flush
B2 HA C-276
HA C-276/316SS 2"
J2 Monel
Remote Seal
2"
B4 HA C-276
HA C-276/316SS 4"
J4 Monel
Remote Seal
2"
B6 HA C-276
HA C-276/316SS 6"
J6 Monel
Remote Seal
6"
C0 Monel
HA C-276/316SS Flush
K0 Tantalum
Remote Seal
Flush
C2 Monel
HA C-276/316SS 2"
N0 HA C-276
HA C-276
Flush
C4 Monel
HA C-276/316SS 4"
N2 HA C-276
HA C-276
2"
C6 Monel
HA C-276/316SS 6"
N4 HA C-276
HA C-276
4"
D0 Tantalum
HA C-276/316SS Flush
N6 HA C-276
HA C-276
6"
G0 316SS
Remote Seal
Flush
Q0 Monel
HA C-276
Flush
G2 316SS
Remote Seal
2"
Q2 Monel
HA C-276
2"
G4 316SS
Remote Seal
4"
Q4 Monel
HA C-276
4"
G6 316SS
Remote Seal
6"
Q6 Monel
HA C-276
6"
R0 Tantalum
HA C-276
Flush
Mounting Flange(15) (CS = Carbon Steel) (SS = Stainless Steel)
Size
Rating
Material
Size
Rating
Material
Size
Rating
Material
A 2"
150#
CS
J 3"
150#
SS(2)
S 100mm 10/16 Bar CS
B 2"
300#
CS
K 3"
300#
SS
T 100mm 25/40 Bar CS
C 3"
150#
CS(2)
L 4"
150#
SS
U 50mm 10/16 Bar SS
D 3"
300#
CS
M 4"
300#
SS
V 50mm 25/40 Bar SS
E 4"
150#
CS
N 50mm 10/16 Bar CS
W 80mm 10/16 Bar SS
F 4"
300#
CS
P 50mm 25/40 Bar CS
X 80mm 25/40 Bar SS
G 2"
150#
SS
Q 80mm 10/16 Bar CS
Y 100mm 10/16 Bar SS
H 2"
300#
SS
R 80mm 25/40 Bar CS
Z 100mm 25/40 Bar SS
Fill Fluid
High Side
Low Side
High Side
Low Side
B Silicon DC200 Silicone DC200(1)(2)
E Silicone DC550 Silicone DC200
C Fluorolube
Inert
F Silicone DC704 Silicone DC200
D NEOBEE
Paratherm
G Syltherm 800 Silicone DC200
Output Indicator
5 4-½ Digit Digital Smart DisplayTM(2)
N Not Required
Standard Options
X Oxygen Cleaned
Y Special Features(4)
N Not Required(2)
Mounting Bracket
N Not Required
Housing
1 Aluminum ½ - 14 NPT(1)(2)
2 Aluminum M20 x 1.5(6)
Hazardous Area Classification
2 CSA All/CRN Registration
L CENELEC EExia & BASEEFA Type N
3 FM/CSA All(1)(2)
N Non-Approved
M CENELEC EExd(14)
W FM/CSA All & ABS Type Approved
R SAA All & ABS Type Approved
340F D A A0 C B N N N 1
May 1998
3 Sample Model Number
9-5
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
TABLE 9-5 Model 340 Sterling High Performance
Basic Model Number
340 Sterling High Performance Transmitter-Controller
Note: Superscript (#) - See page 9-1 for these notes.
Type and Input Range: Span Limits, Min/Max
DD Differential
10/450 inH2O (2.5/112.5 kPa)
FD Flanged Level
10/450 inH2O (2.5/112.5 kPa)
GF Gauge
12.6/450 psi (87/3100 kPa)
Output
E 4-20 mAdc High Performance Output with HART protocol
Diaphragm
H
Hastelloy C-276
Body Parts
Wetted
Process Connection
Type
DA 316SS
½ NPT
D
DB 316SS
¼ NPT
D
GA 316SS
½ NPT
G
FA Carbon Steel
2", 150#, CS
F
FB Carbon Steel
2", 300#, CS
F
FC Carbon Steel
3", 150#, CS
F
FD Carbon Steel
3", 300#, CS
F
FE Carbon Steel
4", 150#, CS
F
FF Carbon Steel
4", 300#, CS
F
FG Stainless Steel
2", 150#, CS
F
FH Stainless Steel
2", 300#, CS
F
FI
Stainless Steel
3", 150#, CS
F
FJ
Stainless Steel
3", 300#, CS
F
FK Stainless Steel
4", 150#, CS
F
FL Stainless Steel
4", 300#, CS
F
Fill Fluid
B Silicone DC200(1)
Output Indicator
5 4-½ Digit Digital Smart DisplayTM
N Not Required
Standard Options
X Oxygen Cleaned
Y Special Features(4)
N Not Required
Mounting Bracket
1 2" Pipe Mount Bracket with SS Hardware
2 Universal Bracket
3 2" Pipe Mount 316SS Bracket
N Not Required
Housing
1 Aluminum ½ - 14 NPT(1)
2 Aluminum M20 x 1.5(6)
Hazardous Area Classification
2
CSA All/CRN Registration
3
FM/CSA All(1)
M
CENELEC EExd(14)
R
SAA All and ABS Type Approved
L
CENELEC EExia and BASEEFA Type N
N
Non-Approved
W
FM/CSA All and ABS Type Approved
340
9-6
DD E
H
DA
B
5
N
N
1
3
Sample Model Number
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
TABLE 9-6 Model 340 With Tantalum Diaphragms
Basic Model Number
340 Absolute, Gauge, and Differential Pressure Transmitter-Controller with Tantalum Diaphragms
Type and Input Range: Span Limits, Min/Max
DB Differential
0.75/15 inH2O (0.185/3.7 kPa)
DD Differential
10/450 inH2O (2.5/112.5 kPa)
Note: Superscript (#) - See page 9-1 for these notes.
GD Gauge
10/450 inH2O (2.5/112.5 kPa)
GF Gauge
12.6/450 psi (87/3100 kPa)
AD Absolute
10/450 inH2O Abs (2.5/112.5 kPa)
AF Absolute
12.6/450 psia (87/3100 kPa)
Output
B 4-20 mAdc with HART protocol(1)
C 4-20 mAdc with HART protocol and integral Transient Suppressor
D Direct Connection to Model 348 Field Mounted Controller or Spare Capsule
Diaphragm
T Tantalum
Body Parts (Process Connection)
Hi Side
Lo Side
Use with
TB Hastelloy-C
316SS
A, G
TC Hastelloy-C
Hastelloy-C
D
TD Monel
316SS
A, G(1)
TE Monel
Monel
D(1)
Fill Fluid
B Silicone DC200
C Inert(13)
Output Indicator
5 4-½ Digit Digital Smart DisplayTM
N Not Required
Standard Options
X Oxygen Cleaned
Y Special Features(4)
N Not Required(5)
Mounting Bracket
1 2" Pipe Mount Bracket with SS Hardware
2 Universal Bracket
3 2" Pipe Mount 316SS Bracket
N Not Required(5)
Housing
1 Aluminum ½ - 14 NPT(1)
2 Aluminum M20 x 1.5(6)
N Not Required(5)
Hazardous Area Classification
2
CSA All/CRN Registered
3
FM/CSA All(1)
M
CENELEC EExd(14)
R
SAA All and ABS Type Approved
L
CENELEC EExia and BASEEFA Type N
N
Non-Approved
W
FM/CSA All and ABS Type Approved
340 DB
May 1998
B
T
TA
B
N
N
N
N
3
Sample Model Number
9-7
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
9.2 ACCESSORIES
Table 9-7 lists many of the accessories available for Model 340s. Additional information about many
transmitter accessories can be found in PI34-3, XTC Transmitter Accessory Guide.
TABLE 9-7 Model 340 Accessories
DESCRIPTION
MODEL 340
Three-Valve Manifold, Steel*
Three-Valve Manifold, 316 SS*
Transient Suppressor*
General Purpose Power Supply, 24 Vdc, 2A*
Field Mounted Power Supply, 28 Vdc, 125 mA*
2" Pipe Mount Bracket, CS
2" Pipe Mount Bracket, SS
Universal Bracket, Pipe and Flat Surface Mount
2" Pipe Mount Bracket, CS
2" Pipe Mount Bracket, SS
Universal Bracket, Pipe and Flat Surface Mount
Universal HART Communicator
D
A/G F
l
l
l
l
l
l
l
l
m
m
m
l
m
m
l
l
l
m
m
m
l
l
l
l
m
m
l
l
l
m
m
m
m
m
m
l
PART NUMBER
16275-252
16275-251
14999-287
15124-1
16055-299
16275-121
16275-113
20027-166
16275-123
16275-115
15965-619
275D9EI5B0100
*Refer to GCMC-1, Measurement & Control Product Catalog, for additional details.
l = For use with transmitter model in table column head; m = not for use.
9.3 SPECIFICATIONS
The following specifications are for all transmitter models except as noted.
9.3.1 Mechanical
PARAMETER
MODEL 340D
MODEL 340A/G
MODEL 340F
Transmitter Dimensions
Figure 9-1
Figure 9-2
2" Pipe Mount Bracket
Universal Bracket
2" Pipe Mount 316 SS Bracket
Weight, approximate
2" Pipe Mount Bracket
Universal Bracket
2" Pipe Mount 316 SS Bracket
Figure 4-10
Figure 4-12
Figure 4-10
7 lbs (3.2 kg)
2 lbs (0.9 kg)
2.5 lbs (1.1 kg)
2 lbs (0.9 kg)
Figure 4-11
Figures 4-13
Figure 4-11
4 lbs (1.8 kg) *
2 lbs (0.9 kg)
2.5 lbs (1.1 kg)
2 lbs (0.9 kg)
Figure 4-14,
Table 4-2
–
–
–
20 lbs (9.1 kg)
–
–
–
* 340 A/G with tantalum diaphragm: 7 lbs (3.2 kg)
9-8
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
Electronics Housing
Epoxy Powder Coated, Low Copper Cast Aluminum
NEMA 4X/6P (IP66/IP68)
Electrical Conduit Entrance, ½-14 NPT, quantity 2; M20 x 1.5 optional
Process Wetted Parts
Various Materials Available
NACE MR0175-96 compliant with options as noted in the model number tables. See certificate at the end
of this section.
Process Connections
Model 340 D.................¼ NPTF with vent/drain, quantity 2, (½ NPTF with process adapters provided)
Model 340A/G* ............½ NPTF, no vent/drain, quantity 1, (external block and bleed may be purchased
separately)
Model 340F ..................High Pressure Side: Per flange size and rating selected
Low Pressure Side: ¼ NPTF with vent/drain (½ NPTF with process adapter
provided)
*340A/G Transmitters with tantalum diaphragms have process connections that are similar to 340D (see
drawings).
May 1998
9-9
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
Nameplate
Enclosure
Rotation
5.46
(138.68)
4.39
(111.5)
1.75 (44.4)
Req'd to
Remove Cap
Electrical Entrance
1/2-14 NPT or
M20 X 1.5 Tapped
Hole, 2 Places
0.50
(12.7)
Terminal Board,
See Note 3
0.75 (19.1)
3.50
(88.9)
Dia
Vent/
Drain
Plug
6.43
(163.3)
TIE
5.21
(132.3)
3.60
(91.44)
2.13
(54.1)
See Note 2
1.00
(25.4)
Notes:
End Cap, 1/4 NPT
Tapped Hole,
See Note 2
7/16"-20 Tapped
Hole, 8 Places
1. Dimensions are in inches (millimeters).
Vent/Drain Plug
(Side Vent Options Top, Bottom or Both)
_
+
X03061S3
2. Process Connection Blocks, not shown, provide a 1/2 NPT process connection
and can be rotated 180° to give the following connection centers:
2.00 (50.1)
2.13 (54.1)
2.25 (57.2)
3. Terminal Board with isolated TIE terminal shown with enclosure end
cap removed.
4. Also shows Models 340A and 340G with tantalum diaphragms.
FIGURE 9-1 Dimensions, Model 340D Transmitter (See Note 4)
9-10
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
120º
Nameplate
Enclosure
Rotation
X03062S2
120º
Electrical Entrance,
1/2-14 NPT or
M20 X 1.5 Tapped
Hole, 2 Places
5.46
(138.7)
4.39
(111.5)
1.75 (44.5)
Req'd to
Remove Cap
0.50
(12.7)
0.75 (19.1)
6.51
(165.4)
3.50
(88.9)
Dia
_
+
TIE
Terminal Board,
See Note 2
1/2 NPT Process
Inlet Connection
Note:
1. Dimensions are in inches (millimeters).
2. Terminal Board with isolated TIE terminal shown with enclosure cap removed.
3. For a Model 340A or 340G with a tantalum diaphragm, see Figure 9-1.
FIGURE 9-2 Dimensions, Model 340A and 340G (See Note 3)
May 1998
9-11
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
9.3.2 Performance and Functional Specifications
Reference conditions: Zero-based spans, Ambient temperature 23ºC, D/A trim values equal to span end
points, Silicone fill, Hastelloy-C diaphragms, 1 second damping.
Accuracy (Accuracy includes the effects of linearity, hysteresis and repeatability.)
Analog Output
Range A:
±0.2% of calibrated span for spans from 1:1 to 2:1 of URL
±(0.174 + 0.013[URL/span]) % of calibrated span for spans from 2:1 to 25:1 of URL
Range B:
±0.1% of calibrated span for spans from 1:1 to 2.5:1 of URL
±(0.043 + 0.0228[URL/span]) % of calibrated span for spans from 2.5:1 to 20:1 of URL
Ranges D, F, and G:
±0.1% of calibrated span for spans from 1:1 to 10:1 of URL
±(0.028 + 0.0072[URL/span]) % of calibrated span for spans from 10:1 to 45:1 of URL
Digital Output
Ranges D, F, and G:
±0.075% of reading or 0.015% of URL, whichever is greater
Sterling Units:
±0.035% of reading or 0.006% of URL, whichever is greater
Range and Sensor Limits
RANGE
A
B
D
F
G
9-12
MIN. SPAN
0.20"
(0.5 kPa)
0.75"
(0.185 kPa)
10"
(2.5 kPa)
12.6 psi
(87 kPa)
300 psi
(2068 kPa)
340D
-2/5"
(5/1.25 kPa)
-15/15"
(-3.7/3.7 kPa)
-450/450"
(-112.5/112.5 kPa)
-150/450 psi
(689/3100 kPa)
NA
340A
NA
LRL/URL
340G
NA
340F
NA
NA
NA
NA
0/450"
(0/112.5 kPa abs)
0/450 psia
(0/3045 kPa abs)
NA
-407/450"
(-101/112.5 kPa)
-14.7/450 psig
(-101/3100 kPa)
0/5500 psig
(0/3792 kPa)
-450/450"
(-112.5/112.5 kPa)
-150/450 psi
(689/3100 kPa)
NA
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
Zero Elevation and Suppression
The range may be set anywhere between the LRL and URL of the transmitter, as long as the calibrated
span does not exceed the minimum allowable span (see Range and Sensor Limits table). Zero and span in
the XTC are non-interactive.
Electronic Damping (Digital Filter)
Adjustable between 0 and 30 seconds
Transmitter Outputs
Each transmitter has:
• Analog, two-wire, 4-20 mA
• Digital, HART Communications
• Transient Suppressor (optional)
Power Supply Requirements - (for CENELEC EEx d [ia] ia requirements see Appendix E)
Minimum Terminal-to-Terminal Compliance Voltage: +10 Vdc
To ensure digital communications, HART requires:
Loop Resistance.................. 250 to 1100Ω
Ripple................................. 0.2 Vp-p, 47-125 Hz
Noise.................................. 0.6 mV RMS maximum
Impedance .......................... 10Ω maximum
Turn-On Time
750
X03047S1
Maximum Load: RL = 50 x VPS - 500Ω
Network Resistance, Ohms
1100
Maximum Terminal-to-Terminal Voltage: +42 Vdc
500
Operating
Region
250
0
10
The transmitter will perform within specifications within
60 seconds after power is applied.
15
30
42
Power Supply, Vdc
Local Indication
Optional 4½ Digit Smart Display
May 1998
9-13
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
Maximum Working Pressure1
RANGE
A
B
D
F
G
340D
±100 psi2
(±689kPa)
±100 psi2
(±689kPa)
±4000 psi
(±27.6 kPa)
±4000 psi
(±27.6 kPa)
NA
340A
NA
340G
NA
340F
NA
NA
NA
NA
250 psi
(1.72 MPa)
1500 psi
(10.3 MPa)
NA
250 psi
(1.72 MPa)
1500 psi
(10.3 MPa)
Contact the factory
Per flange
Per flange
NA
1
The Maximum Working Pressure (MWP) is defined as the maximum pressure that can be applied to the cell
without damage, static or otherwise.
2
340D Range A and Range B sensors have a body rating of ±4000 psi; however, no overpressure protection is
employed in these units, thereby limiting MWP to ±100 psi.
Flange Ratings
STANDARD
CLASS
CARBON STEEL RATING
ANSI
150#
285 psi1
ANSI
300#
740 psi1
DIN
PN 10/16
16 bar2
DIN
PN 10/16
40 bar2
1
At 100ºF (38ºC), the rating decreases with increasing temperature.
2
STAINLESS STEEL RATING
275 psi1
720 psi1
16 bar2
40 bar2
At 120ºC, the rating decreases with increasing temperature.
Network Topology
Point-to-Point
Transmitter Quantity ............................. 1
Network Signal and Connection ............. Analog 4-20 mA, single current loop, see Figures 4-6, 47, and 4-8.
Network Resistance ............................... See figure on previous page.
Multi-Drop
Transmitter Quantity ............................. 1-15
Network Signal and Connection ............. Digital, parallel connected, see Figure 4-9.
Network Resistance ............................... See figure on page 9-13.
9-14
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
9.3.3 Two-Wire Cable
Type .................................................................. Twisted single-pair, shielded, copper
Conductor Size for Network Length
Less than 5000 feet (1524 m) ....................... 24 AWG minimum
More than 5000 feet (1524 m)...................... 20 AWG minimum, 16 AWG maximum
Cable Capacitance ............................................. Refer to Section 4.3.6
Recommendation................................................ Belden 8641, 24 AWG
Belden 8762, 20 AWG
Length, Maximum.............................................. Refer to Section 4.3.6
9.3.4 Environmental
Ambient Temperature Effect
Models 340A, 340D and 340G
Ranges A and B: ±(0.175% URL + 0.075% span) per 28°C (50°F)
Ranges D, F, and G: ±(0.075% URL + 0.075% span )per 28° C (50°F)
Model 340F
Ranges D and F*: ±(0.075% URL + 0.075% span + 1.5 inH2O) per 28°C (50°F)
* For 3" and 4" flanges only. For smaller flanges, consult the factory.
Temperature Limits
Sensor Assembly*
• Silicone: -40 to 125ºC (-40 to 257ºF)
• Inert fill: 0 to 85ºC (32 to 185ºF)
• Paratherm: -20 to 125ºC (-4 to 257ºF)
Electronics
• -40 to 85ºC (-40 to 185ºF)
*Limit to 85ºC in vacuum service
Stability
Zero Stability:
Range A: ±0.1% of URL for 6 months
Ranges B-G: ±0.1% of URL for 12 months
Span Stability: No measurable drift
Humidity
0-100% relative humidity, non-condensing
May 1998
9-15
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
Maximum Moisture
Operating: Less than 0.050 lb. H2O per lb. of dry air
Storage: Less than 0.028 lb. H2O per lb. of dry air
Corrosive Atmosphere
Class G3 (Harsh) environment per ISA-S71.04
Vibration Effect
Less than ±0.05% of maximum span per G for 0 to 60 Hz in any axis up to 2Gs maximum
Power Supply Effect
Less than ±0.005% of output span per volt
EMI/RFI Susceptibility
Less than 0.25% of maximum span at 30 V/m, 30 MHz - 1 GHz
ESD Susceptibility
IEC severity level 4, 15 kV
Surge Protection (Standard units, either loop terminal to enclosure)
±60 Vdc from 5 µF capacitor through 600Ω +2500V at 150Ω source resistance
Surge Protection (with optional Transient Suppressor)
•
•
Maximum clamping voltage (either loop terminal to enclosure)
– DC ................................................................. 68 V
– 100 kV per microsecond AC surge.................. 70 V peak
– 1000 kV per microsecond AC surge.............. 120 V peak
Transient surge current
– Up to 5000 amp for 20 microseconds, repeated strikes
Static Pressure Effect
RANGE
B
D
F
SPAN ERROR CORRECTABLE TO: *
0.2% per 100 psi
0.2% per 1000 psi
0.2% per 1000 pse
* Zero effect eliminated at operating pressure.
9-16
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
9.3.5 Hazardous Area Classification
Transmitters are designed for the following classifications. Before installing, applying power to, or
servicing a transmitter, see the transmitter’s nameplate and the Tables in Section 9.1 for the electrical
classification. Contact Moore Products Co. for latest approvals and certifications.
CE Approved
EN50081-1:1992 and EN50082-2; see Declaration of Conformity on a
following page.
ABS Type approved
FM/CSA Approval
Intrinsically Safe:
Class I, Division 1, Groups A, B, C, and D
Class II, Division 1, Groups E, F, and G
Class III, Division 1
Explosion Proof:
Class I, Division 1, Groups B, C, and D
Class II, Division 1, Groups E, F, and G
Class III, Division 1
Non-Incendive:
Class I, Division 2, Groups A, B, C and D
CENELEC Approval
Intrinsically Safe:
EEx ia IIC T6, T5, T4
Explosion Proof:
EEx d [ia] ia IIC T4
SAA Approval
Intrinsically Safe:
Ex ia IIC T6
Explosion Proof:
Ex d IIB T6
Non-incendive:
Ex n DIP IIC T6
BASEEFA Approval
Ex N IIC T4
Ex N IIC T5
(Tamb –40ºC to +85ºC
(Tamb –40ºC to +40ºC)
in accordance with BS6941:1988
May 1998
9-17
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
9.3.5.1 CSA Hazardous Locations Precautions
This section provides CSA hazardous location precautions that should be observed by the user when
installing or servicing the equipment described in this manual. These statements supplement those given in
the preceding section.
WARNING
Failure to observe the following precautions could result in an explosion
hazard.
Precautions - English
For Class I, Division 1 and Class I, Division 2 hazardous locations:
• Use only factory-authorized replacement parts. Substitution of components can impair the suitability of
this equipment for hazardous locations.
For Division 2 hazardous locations:
When the equipment described in this Instruction in installed without safety barriers, the following
precautions should be observed. Switch off electrical power at its source (in non-hazardous location) before
connecting or disconnecting power, signal, or other wiring.
Précautions - Français
Emplacements dangereux de classe I, division 1 et classe I, division 2:
• Les pièces de rechange doivent être autorisées par l’usine. Les substitutions peuvent rendre cet appareil
impropre à l’utilisation dans les emplacements dangereux.
Emplacement dangereux de division 2:
Lorsque l’appareil décrit dans la notice ci-jointe est installé sans barrières de sécurité, on doit couper
l’alimentation électrique a la source (hors de l’emplacement dangereux) avant d’effectuer les opérations
suivantes branchment ou débranchement d’un circuit de puissance, de signalisation ou autre.
9.3.6 Special Conditions For Safe Use
BASEEFA
1. The enclosure must be earthed by means of the external earth connection.
2. The installation of the external connections and plugging of the unused entry must be carried out so as
to maintain the IP66 and IP68 degree of protection using devices capable of withstanding a 3.5 Joule
impact.
3. The external connections must be made using suitable sized cable lugs.
9-18
May 1998
UM340-1
MODEL DESIGNATIONS AND SPECIFICATIONS
DECLARATION OF CONFORMITY
according to EN 45014
We
Moore Products Co.
Sumneytown Pike, Spring House, PA 19477
declare under our sole responsibility that the product,
Model 340, Pressure Transmitter with any factory installed options and in any
configuration available from the factory
to which this declaration relates is in conformity with the following standards or other
normative documents
EMC: EN50081-1 and EN50081-2 Emissions
EN50082-1 and EN50082-2 Immunity
following the provisions of the EMC directive
Spring House, PA U. S. A.
James O. Moore
General Manager
Measurement and Control Division
May 1998
9-19
MODEL DESIGNATIONS AND SPECIFICATIONS
UM340-1
n
9-20
May 1998
UM345-1
GLOSSARY
10.0 GLOSSARY
Defined below are terms relevant to the fields of pressure measurement and HART networks.
ABSOLUTE (abs) PRESSURE – A pressure measured against absolute zero or a total vacuum as a
reference. The units of measurement are called absolute pressure units. For example: psia = pounds per
square inch absolute.
ANALOG SIGNALING – A low-current signal of 4 to 20 mAdc from a field instrument to a primary
master or non-signaling hardware.
ANSI – American National Standards Institute
APACS® - Advanced Process Automation and Control System - Moore Products Co.’s solution to your
process automation and control needs. APACS combines the advantages of a distributed control system
(DCS) with those of a programmable logic controller (PLC) to meet the demands of both continuous and
batch processes.
AWG – American Wire Gauge
BARRIER – A device designed to limit the voltage and current in a hazardous area even if certain types of
faults occur on the non-hazardous side of the barrier.
BARRIER RESISTANCE – The maximum end-to-end resistance of a barrier, as specified by the barrier
manufacturer. If both supply and return barriers are used in a network, the barrier resistance is the sum of
the end-to-end resistance of both barriers. For active barriers that use resistance to limit current, the barrier
resistance is the internal resistance between the hazardous area terminal and the barrier internal node where
voltage is regulated.
COMMISSIONING – Testing of a transmitter and loop to verify transmitter configuration and loop
operation and wiring.
CONFIGURATION – A database (or archive) created using a HART Communicator and downloaded to
a transmitter to define transmitter operation.
CONFIGURE/CONFIGURING – The entering of specific parameter data into a HART Communicator
to be downloaded to a transmitter to define that transmitter’s operating characteristics.
CURRENT SENSE RESISTANCE – The resistance in a network across which the field instrument
(transmitter) signal voltages are developed.
DAMPING – A user-selectable output characteristic that increases the response time of a transmitter to
smooth the output when the input signal contains rapid variations.
DIGITAL SIGNALING – The high frequency HART signal.
EXPLOSION-PROOF ENCLOSURE – An enclosure that can withstand the explosion of gases within it
and prevent the explosion of gases surrounding it due to sparks, flashes, or the explosion of the container
itself, and maintain an external temperature that will not ignite the surrounding gases.
May 1998
10-1
GLOSSARY
UM345-1
FIELD INSTRUMENT – A network element that uses current variation for digital signaling or digital
plus analog signaling.
GAUGE PRESSURE – A pressure measured against atmospheric or barometric pressure as a reference.
The units of measurement are called gauge pressure units. For example: psig = pounds per square inch
gauge.
HART – Highway Addressable Remote Transducer – A communication protocol that provides
simultaneous analog and digital signaling between master and slave devices. It is supported by the HART
Communications Foundation.
HART NETWORK – A single pair of cabled wires and the attached communicating HART elements.
INTRINSICALLY SAFE INSTRUMENT – An instrument that will not produce any spark or thermal
effects under normal or abnormal conditions that will ignite a specified gas mixture.
LOWER RANGE LIMIT (LRL) – The lowest value of the measured variable that a transmitter or other
measurement device can be configured to measure.
LOWER RANGE VALUE (LRV) – Representing the 4 mA point in the transmitter’s output, the LRV is
the lowest value of the measured value that the transmitter can be configured to measure.
MAXIMUM OVERRANGE – The maximum pressure (static + differential) that can be applied safely to
a transmitter.
MULTI-DROP NETWORK – A HART network having from 1 to 15 field instruments that are parallel
connected on a single 2-wire cable. This network uses digital signaling only.
NETWORK – A network includes the following items:
•
Transmitter(s)
•
Network element (controller, recorder, passive non-signaling element, or other device)
•
Cabling interconnecting these devices
•
Barriers for intrinsic safety, if installed
•
Current sense resistor
NETWORK ELEMENT – Any field instrument or primary or secondary master.
NETWORK RESISTANCE – The sum of the current sense resistance, barrier resistance, if any, and any
other resistance on the network.
NPT – National Pipe Thread
POINT-TO-POINT NETWORK – A network having a single field instrument and primary master.
Analog signaling or analog plus digital signaling is possible.
POLLING ADDRESS – A unique number assigned during configuration that identifies a transmitter
connected to a network. An address between 1 and 15 assigned to a transmitter connected to a Multi-Drop
network. A transmitter connected to a Point-to-Point network has 0 as an address.
10-2
May 1998
UM345-1
GLOSSARY
PRIMARY MASTER – The single controlling network element that communicates with one or more field
instruments.
RERANGING – Changing a transmitter’s 4 and 20 mA settings (i.e., setting LRV and URV); this is a
configuration function.
SECONDARY MASTER – An occasional user of a network, such as the HART Communicator.
SEDIMENT – Solid material that settles in a liquid or gas and can cause blockage that may affect
pressure measurement.
SPAN – Algebraic difference between the upper and lower range values (URV and LRV).
TRANSDUCER – A device that accepts an input, such as pressure, and converts that input into an output
of some other form, such as a voltage.
UPPER RANGE LIMIT (URL) – The highest value of the measured variable that a transmitter can be
configured to measure.
UPPER RANGE VALUE (URV) – Representing the 20 mA point in a transmitter’s output, this is the
highest value of the measured variable that the transmitter is currently configured to measure.
n
May 1998
10-3
UM345-1
GLOSSARY
May 1998
10-5
UM340-1
APPENDIX A - FUNCTION BLOCKS
A.0 APPENDIX A - FUNCTION BLOCKS
This section provides a detailed description of each function block in a Model 340 Transmitter. Default
configuration information can be found in Appendix C. Below is a block diagram of the function block
arrangement in the transmitter.
Sensor
Input
Write
Protect
Section A.1
Section A.3
Characterizer
Operator
Display
Section A.5
Section A.4
Totalizer
Xmtr
ID
Section A.6
Section A.2
M
TOT
P
Alarm
Section A.7
PID ON
PID OFF
T
SetPoint
T&H
P
Section A.9
F
PID
S
C
S
Section A.10
C
Auto/
Manual
Characterizer
V
Section A.11
Section A.8
P - Process Variable
S - Setpoint
V - Valve
T - Tracking Value
C - Auto/Manal Status
F - Feedback Signal
M - Measure Variable
TOT - Total Value
- Connector to
Operator Display
Output
X03064S2
FIGURE A-1 Function Block Arrangement in Model 340 Transmitters
May 1998
A-1
APPENDIX A - FUNCTION BLOCKS
UM340-1
A.1 WRITE PROTECT BLOCK
The write protect parameter, when configured as “on,” blocks all HART commands which write to the
transmitter. The transmitter will still be accessible by a Model 275 HART Communicator or other HART
Masters, but these devices will only be able to read data from the transmitter. For example, if write protect
were “on,” the transmitter could not be re-ranged. To enable write commands, configure the write protect
parameter as “off.”
A.2 SENSOR INPUT BLOCK
The Sensor Input Block allows the user to configure those parameters which pertain to the pressure sensor.
Sensor Input Block parameters are listed below; a description of each parameter then follows.
Measured Variable Units ..........................................inH2O, inHg, ftH2O, mmH2O, mmHg
PSI, BAR, mBAR, g/sq cm, kg/sq cm, PA, kPA, Torr, Atm
Measured Variable Range Lo............................................................... -999999 to 999999
Measured Variable Range Hi ............................................................... -999999 to 999999
Damping Time Constant ........................................................................... 0 to 30 Seconds
Transfer Function ...............................................................................Linear, x1/2, x3/2, x5/2
Transfer Function Cutoff .................................................................................... 0 to 30%
Zero Dropout...................................................................................................... 0 to 30%
Measured Variable Units
These are the recognized pressure units within the HART Protocol. Pressure units are selected from a preconfigured list. Other pressure units must be converted to one of these 14 units.
Measured Variable Lo (MV Lo) & Measured Variable Hi (MV Hi)
These two parameters determine the range of the transmitter. The MV Lo parameter represents the pressure
that will cause the transmitter to output 4 mA. The MV Hi parameter represents the pressure that will
cause the transmitter to output 20 mA. These two parameters are non-interactive. Changing one does not
effect the other. Furthermore, these parameters can be configured to make the transmitter forward acting or
reverse acting, that is, the MV Hi parameter does not have to be configured for a higher pressure than the
MV Lo parameter. For example, 100 to 0 PSI is an allowable range with 4mA being transmitted at 100
PSI and 20mA being transmitted at 0 PSI.
The actual limits for the MV Lo and Hi parameters, as well as the span, are determined by the particular
sensor range at hand. The Upper Sensor Limit (USL) and Lower Sensor Limit (LSL) are listed along with
the Sensor Input Block parameters when using a HART Communicator; otherwise, check the transmitter
model number against the model designation list in Section 9 for these limits.
A-2
May 1998
UM340-1
APPENDIX A - FUNCTION BLOCKS
Damping
The Damping parameter is used to configure the time constant for the transmitter. This can be used to quiet
noisy process signals; however, when configuring this parameter remember that it takes 4-5 time constants
to respond to 99.9% of a step input change. The default damping value is one second.
Transfer Function
The transmitter has several built in transfer functions for extracting the flow signal from various, common
primary flow elements. The most common transfer function is the square root (x1/2) used with orifice plates.
Also included are x3/2 and x5/2 transfer functions for use with wedge and V-notched weir flow elements. If
the transmitter is not being used with one of these flow elements, simply select a linear transfer function.
Transfer Function Cutoff
The square root transfer function has high gain near 0% input. To prevent small input changes (noise) from
being amplified excessively, a linear segment is used on the low end of the curve. The point at which this
linear segment ends and the actual transfer function begins is the Transfer Function Cutoff. This is user
configurable between 0% and 30% of input.
Zero Dropout
The Zero Dropout parameter can be used in conjunction with the Transfer Function Cutoff parameter. This
parameter is a value below which the transmitter’s output will be 0%. This can be used with extremely
noisy process signals where the linear approximation method does produce the desired results. This is user
configurable between 0% and 30% of input.
Active Input
The last feature of the Sensor Input Block is not a parameter but a tool to configure the MV Lo and Hi
parameters.
If desired, the measured variable range may be configured against a precision pressure source in place of
simply typing the range into the MV Lo and Hi parameters. The Active Input feature will show the user the
“live” input pressure as well as the MV Lo and Hi parameters. The user then applies zero and span
pressures from a precision pressure standard and copies those values directly into both the MV Lo and Hi
parameters. This procedure allows the HART Communicator to mimic the operation of the local magnetic
switches.
For detailed information on using the Active Input feature or the local magnetic switches, see Section 6.
May 1998
A-3
APPENDIX A - FUNCTION BLOCKS
UM340-1
A.3 CHARACTERIZER
The Characterizer Block is a 10-segment, user-configurable transfer function. This function block can be
used to linearize either an unusual flow element, an odd-shaped tank, or in a process control application, a
non-linear valve. Characterizer Block parameters are listed below, with descriptions following.
Characterizer......................................................................................................... On/Off
Characterizer Position..............................................Transmitter Output/Controller Output
X0 . . . X10 .................................................................................................0.0 to 100.0%
Y0 . . . Y10 .................................................................................................0.0 to 100.0%
Characterizer
This parameter is used to turn the characterizer on or off.
Characterizer Position
This parameter determines whether the Characterizer Block is located before or after the Controller Block.
The characterizer can be used in conjunction with any of the built-in transfer functions if desired.
X0…X10 and Y0…Y10
These parameters specify the values for the 10 x-y coordinates that make up the characterizer segments.
The coordinates are always specified in percent.
A.4 TOTALIZER BLOCK
The Totalizer Block is used to totalize the measured variable. This is typically done with differential
pressure transmitters when the measured variable represents the flow rate, although the totalizer is
available in all Model 340 transmitters.
At power-up the totalizer begins counting. Go to the Model 275 HART Communicator’s Quick Access
Key menu to start, stop, or reset the totalizer at any time. The totalizer will stop counting when a
configurable parameter is changed using either the Communicator or the magnetic pushbuttons. Restart the
totalizer from the Quick Access Key menu on the Communicator.
Totalizer Block parameters are listed below, with a description of each following.
Fullscale Value.........................................................................................0.001 to 19999
Timebase.................................................................................. SEC/MIN/HR/DAY/WK
Multiplier .................................................................................................0.001 to 19999
Zero Dropout............................................................................................... 0.0 to 30.0%
Count Units........................................................................................4-Character ASCII
Local Display ...........................................................................................Enable/Disable
A-4
May 1998
UM340-1
APPENDIX A - FUNCTION BLOCKS
Fullscale Value and Timebase
The Fullscale Value and Timebase parameters define the rate at which the totalizer counts for a 100%
input signal. Accordingly, a 50% input signal will cause the totalizer to count at 50% of this rate.
Multiplier
If the fullscale value is too large to yield a meaningful display, a multiplier can be configured to indicate
that the configured fullscale value needs to be multiplied by this number to obtain the actual totalized value.
Zero Dropout
The Zero Dropout parameter is used to force the totalizer to stop counting when the measured variable falls
below the configured value. There is no deadband associated with the zero dropout feature. The Totalizer
Block zero dropout feature is independent of the Sensor Input Block zero dropout feature.
Count Units
This 4-character ASCII tag is used to indicate the totalizer units. Examples could be GAL for gallons or
BARR for barrels.
Local Display
The Local Display parameter is used to add the total value to the variables available at the local display. If
the Operator Display Block’s local display code is configured as Total Only, the total will be the only
variable available on the local display and this parameter has no bearing.
A.5 OPERATOR DISPLAY BLOCK
The Operator Display Block is used to configure the operation of the local Smart Display. Operator
Display Block parameters are listed below; a description of each parameter then follows.
Process Variable Range Lo ...................................................................... -19999 to 19999
Process Variable Range Hi ...................................................................... -19999 to 19999
Process Variable Units......................................................................... 4-Character ASCII
Auto Rerange ........................................................................................ Enable or Disable
Local Display Code ................................. MV; PV; %; MV, PV, and %; or Totalizer Only
Autotoggle............................................................................................................. On/Off
Toggle Time............................................................................................. 1 to 30 Seconds
Process Variable Lo (PV Lo), Hi (PV Hi) and Units (PV Units)
The PV Lo and PV Hi parameters are used to apply engineering units to the configured MV range. For
example, the MV range might be 0 to 100 inH2O across an orifice plate. This may represent an actual flow
of 0 to 500 GPM. The PV Lo and Hi parameters could be configured as 0 and 500 respectively, and the PV
Units as GPM. This range could then be shown on the local Smart Display in place of the MV Range or
May 1998
A-5
APPENDIX A - FUNCTION BLOCKS
UM340-1
percent. If no Smart Display is installed, this range could still be meaningful as other HART devices, such
as the HART Communicator, can read and display this value.
Auto Rerange
The Auto Rerange parameter can be used to link the MV range and PV range. By configuring the Auto
Rerange parameter to “on” and making a change to either the MV range or PV range, the transmitter will
automatically calculate a new range for the other of the two variables. This enables the user to re-calibrate
a DP flow transmitter in flow units rather than pressure units, eliminating the need to do tedious
calculations through the square root extractor.
Consider the following example:
Original PV
Range
Original MV
Range
New PV Range
Automatically Calculated
New MV Range
0 to 500 GPM
0 to 100 inH2O
0 to 750 GPM
0 to 225 inH2O
NOTE
Auto Rerange operates only with linear and square root transfer functions.
It cannot back-calculate through the x3/2, x5/2, or Characterizer functions.
Local Display Code
The Local Display Code parameter is used to select variables for local indication. MV Units, PV Units, or
Percent can be selected for a basic display.
A more powerful display is selected by configuring the Local Display Code as MV, PV, and Percent. This
enables all variables in all units to be displayed locally. Automatic switching between variables is enabled
by configuring the Autotoggle parameter, or the user can switch manually using the local magnetic
switches (see Section 6 for local operation).
Also, the display can be locked to indicate only the totalizer value. Totalizer display functions are usually
configured in the Totalizer Block; however, if totalizer only is selected as the Local Display Code, only the
totalizer value will be indicated regardless of the Totalizer Block configuration.
The following table summarizes local display operation:
A-6
May 1998
UM340-1
APPENDIX A - FUNCTION BLOCKS
Local Display
Code
Controller
(from
Controller
block)
Totalizer Display
(from Totalizer
Block)
Variables Available on Local Display
MV
Off
Off
MV
MV
Off
On
MV, Total
MV
On
Off
P in MV units, SP in MV units, V in %
MV
On
On
P in MV units, SP in MV units, V in %,
Total
PV
Off
Off
PV
PV
Off
On
PV, Total
PV
On
Off
P in PV units, SP in PV units, V in %
PV
On
On
P in PV units, SP in PV units, V in %, Total
%
Off
Off
%
%
Off
On
%, Total
%
On
Off
P in %, SP in %, V in %
%
On
On
P in %, SP in %, V in %, Total
MV/PV/%
Off
Off
MV, PV, %
MV/PV/%
Off
On
MV, PV, %, Total
MV/PV/%
On
Off
P in MV units, P in PV units, PV in %, SP in
MV units, SP in PV units, SP in %, V in %
MV/PV/%
On
On
P in MV units, P in PV units, PV in %, SP in
MV units, SP in PV units, SP in %, V in %,
Total
Total Only
Off
Off
Total
Total Only
Off
On
Total
Total Only
On
Off
Total
Total Only
On
On
Total
Autotoggle
The Autotoggle parameter is used to force the local display to automatically toggle through all parameters
defined by the Local Display Code.
May 1998
A-7
APPENDIX A - FUNCTION BLOCKS
UM340-1
Toggle Time
This parameter defines the time between toggling to the next variable when Autotoggle is configured “On.”
A.6 TRANSMITTER ID BLOCK
The Transmitter ID Block can be used to maintain identification information about the transmitter.
Transmitter ID Block parameters are listed below; a description of each parameter then follows.
Tag ..................................................................................................... 8-Character ASCII
Descriptor ......................................................................................... 16-Character ASCII
Message ............................................................................................ 32-Character ASCII
Date ............................................................................................................. DD/MM/YY
Device Serial Number................................................................................. 0 to 16777215
Polling Address ......................................................................................................... 0-15
Tag, Descriptor, and Message
These three parameters are ASCII text and have no bearing on transmitter output. Up to an 8-character
Tag, 16-character Descriptor and 32-character Message may be entered for the transmitter.
Date
The Date parameter uses the international DD/MM/YY format. This date can be selected by the user to
indicate any date or event, such as date of installation or last date of service.
Device Serial Number
The 8-digit Device Serial Number is factory configured to match the serial number on the transmitter
nameplate. It is not recommended that this number be changed.
Polling Address
The Polling Address is used to place the transmitter in either analog or digital mode. A Polling Address of 0
indicates that the transmitter is in analog mode and will output a 4-20 mA current according to its
calibrated range. In analog mode, a single transmitter is connected to a Point-to-Point Network.
A Polling Address between 1 and 15 indicates the transmitter is in digital mode and will output a constant 4
mA current. In digital mode, up to 15 transmitters can be connected in a Multi-Drop Network using a
single twisted pair cable. For more information on Multi-Drop networks, see Section 4.
A-8
May 1998
UM340-1
APPENDIX A - FUNCTION BLOCKS
A.7 ALARM BLOCK
The Alarm Block is used to configure one or two HART alarms. Alarm Block parameters is listed below; a
description of each parameter then follows.
Alarm 1..................................................................................................... Enable/Disable
Alarm 1 Setpoint ................................................................................. -999999 to 999999
Alarm 1 Type .................................................................................................... High/Low
Alarm 2..................................................................................................... Enable/Disable
Alarm 2 Setpoint ................................................................................. -999999 to 999999
Alarm 2 Type .................................................................................................... High/Low
Self-Clearing NAKS.............................................................................................. On/Off
Alarms Out of Service ........................................................................................... On/Off
Alarm 1 & 2
Enable or disable either alarm by setting this parameter as “Enable” or “Disable.”
Alarm 1 & 2 Setpoint
Use this parameter to configure the setpoint for the alarm. The alarm setpoints are configured in PV units.
Alarm 1 & 2 Type
This parameter determines the type of alarm, either high or low. These alarms have no associated
deadband.
Self Clearing NAKS
The not acknowledge (NAK) bit in the alarm status word is set whenever the alarm goes from a no-alarm to
an alarm condition. When the alarm condition clears, the NAK bit will reset if the Self-Clearing NAKS
parameter is set to On. If the Self-Clearing NAKS parameter is set to Off, the NAK bit must be reset via a
HART command.
Alarms Out of Service
The Alarms Out of Service parameter determines if the out-of-service bit in the alarm status word is set.
This bit can be sensed by HART master devices such as the HART Communicator to indicate that the
transmitter is out of service and the alarm condition should therefore be ignored.
May 1998
A-9
APPENDIX A - FUNCTION BLOCKS
UM340-1
A.8 SETPOINT TRACK AND HOLD BLOCK
Configure the Setpoint Track and Hold Block if the Controller function of the transmitter is configured
“On.” Setpoint Track and Hold Block parameters are shown below, followed by a description of each.
Tracking Setpoint ..................................................................................................Yes/No
Power-Up Setpoint .............................................................................. -999999 to 999999
Tracking Setpoint
If this parameter is configured as “Yes,” the SP tracks the process variable when the controller is in manual
mode. If it is configured as “No,” non-tracking, the SP remains at its configured value while the controller
is in manual mode.
Power-Up Setpoint
The Power-Up Setpoint value is the value to which the SP is initialized to at power-up. On-line SP
adjustments may be made with the HART Communicator via the Quick Access Key menu. This value also
may be edited using the local magnetic switches as described in Section 6.
A.9 CONTROLLER BLOCK
The Controller Block provides a range of proportional-integral-derivative functions including: PID, PD,
and ID. The function block is used to configure controller operation and tuning parameters. Controller
Block parameters are listed below; a description of each parameter then follows.
Controller Status ................................................................................................... On/Off
Controller Type ............................................................................................... PID/PD/ID
Action ........................................................................................................Reverse/Direct
Proportional Gain (PD and PID) ................................................................... 0.01 to 100.0
Time Integral............................................................................... 0.01 to 1000 min./repeat
Time Derivative.................................................................................... 0.01 to 100.0 min.
Derivative Gain ............................................................................................ 1.00 to 30.00
Manual Reset (PD only) ..............................................................................0.0 to 100.0%
Manual Reset Tracking (PD only)..........................................................................No/Yes
Controller Status
Use this parameter to turn the controller On or Off. If the controller is turned Off, the transmitter output
reflects the process variable and the Setpoint Track and Hold Block and A/M Block are dormant. If the
controller is turned On, transmitter output reflects the valve signal. Process variable information must be
obtained digitally through HART.
A-10
May 1998
UM340-1
APPENDIX A - FUNCTION BLOCKS
Controller Type
This parameter is used to select the controller type. PID, PD, and ID types are available, with each working
as described below.
PID Controller
The PID Controller is a reset-type controller that uses external feedback to establish the integral action.
The function block forces the output to track the feedback when the controller is in manual. If the
derivative time TD is set to 0.00, the derivative section is eliminated.
Equations
O = GE + R
AUTO
R = F/(TIs + 1)
O = ±PG[P(1+{TDs/([TD/DG]S+1)}-S] + [1+1/TIs]
MANUAL
R = F - GE ∴ O = F
PD Controller
The PD Controller is a proportional-only controller with the manual reset that can be selected as
tracking or non-tracking. The function block forces the controller output to track the feedback and,
when manual reset tracking is selected, the manual reset (MR) also will track the feedback when the
controller is in manual.
In either case, the controller always goes back to AUTO with the output equal to the feedback. The
reset value (R) then returns to the value of the MR with the time constant established by the integral
time (TI). The default value of TI is 100 minutes, but it should be reduced (e.g., 0.01 minutes) when
using this controller type. The TI time constant is selected for the rate at which the controller should
return to normal operation after switching from manual to auto. Bear in mind that the TI time in the PD
controller is not an integral time and does not affect control stability.
If the derivative time TD is set equal to 0.0, the derivative section is eliminated.
Equations
O = GE + R
AUTO
R = MR/(TIs +1)
MANUAL
R = F - GE ∴ O = F
If MRT = Yes, MR = F
May 1998
A-11
APPENDIX A - FUNCTION BLOCKS
UM340-1
ID Controller
The ID Controller is an integral-only controller that uses external feedback to establish integral action.
If the derivative time TD is set to 0.00, the derivative section is eliminated.
The gain for this controller is fixed at a value of 1.00. While the displayed gain can be changed, it will
not affect the controller.
Equations
O = (GE + F)/(TIs + 1)
AUTO WHEN OUTPUT O IS CONNECTED TO FEEDBACK F
O = ±PG[P(1+{TDs/([TD/DG]S+1)}-S] [1/TIs]
MANUAL
O=F
Action
This parameter is used to set the controller as direct or reverse acting.
PG, TI, TD, DG, MR, and MR Tracking
These parameters are used to tune the controller. The controller must be tuned specifically for each
application. The use of each of these parameters is described above under the Controller Type parameter.
These values can be edited on-line through the Quick Access Key menu of the HART Communicator.
A.10 A/M TRANSFER BLOCK
The A/M Transfer Block is used to configure the A/M switching features of the controller. The Block’s
software provides a single pole, double throw switch function. When in automatic mode, the controller
output is passed to the Output Block. When in manual, the manual value is passed to the Output Block.
When in manual, the SP will track the process to avoid bumps when switching from manual to automatic if
the tracking setpoint parameter in the Setpoint Track and Hold Block is set to “Yes.”
A/M switching can be initiated from the Quick Access Key Menu of the HART Communicator or through
the use of the local magnetic switches (see Section 6). A/M Transfer Block parameters are listed below; a
description of each parameter then follows.
Power-Up Mode ...................................................................................Automatic/Manual
Automatic Mode Only ...........................................................................................Yes/No
Power-Up Valve ........................................................................................... -1.0 to 110%
A-12
May 1998
UM340-1
APPENDIX A - FUNCTION BLOCKS
Power-Up Mode
This parameter is used to configure the mode in which the controller will power-up. If automatic is
selected, the Power-Up Setpoint value from the Setpoint Track and Hold Block is used as the SP and the
controller will be initialized to automatic mode. If manual is selected, the Power-Up Valve value within this
block is used as the output and the controller is initialized to manual mode.
Automatic Mode Only
If this parameter is configured to “Yes,” the controller cannot be switched to manual mode. The controller
will be initialized to automatic at power-up regardless of the Power-Up Mode parameter.
Power-Up Valve
The power-up valve is the manual power-up value used if the controller is powered up in manual mode.
On-line valve adjustments may be made using the HART Communicator via the Quick Access Key Menu.
This value may also be edited via the local magnetic switches as described in Section 6.
A.11 OUTPUT BLOCK
The Output Block converts the internal digital signal it receives into a 4-20 mA analog output signal. The
input to the block represents either the actual 4-20 mA process variable or the valve signal depending on
the configuration of the Controller Block. In digital mode the transmitter output is a constant 4 mA. The
Output Block parameter is listed below and then described.
Failsafe Level...................................................................................Lo, Hi, or Last Value
Failsafe Level
This parameter specifies the value to which the transmitter output will go if an error is detected while the
transmitter is performing its self-test program. This value may be set at Lo (3.85mA), Hi (22.5mA), or
Last Value (transmitter output immediately before entering failsafe mode).
n
May 1998
A-13
APPENDIX A - FUNCTION BLOCKS
UM340-1
A-14
May 1998
UM340-1
APPENDIX B - HAZARDOUS AREA INSTALLATION
B.0 APPENDIX B - HAZARDOUS AREA INSTALLATION
This Appendix presents wiring and barrier selection information for installation of a Model Series 340
Transmitter in a hazardous location. Refer to the barrier list below, the barrier manufacturer's installation
instructions, and the following pages when installing or servicing a transmitter in a hazardous location.
The following barriers have been tested with the Model 340:
BARRIER
MANUFACTURER AND
MODEL
BARRIER TYPE
FOR USE WITH
Stahl 9001/51-280-091-14
Active/Dual Channel
XTC to LIL or HFM*
Stahl 9001/01-280-100-10
Passive/Dual Channel
XTC to SAM*
MTL 787S
Dual Channel
XTC to LIL or HFM*
MTL 728
Dual Channel
XTC to SAM*
* LIL - Local Instrument Link station (e.g., Model 352, Model 385), HFM - APACS HART Fieldbus
Module, SAM - APACS Standard Analog Module
Other barriers from these and other manufacturers can provide the required protection. The installer should
carefully select barriers based on the required protection, loop wiring, manufacturer’s barrier performance
data, and the data in the figures on the next two pages.
The following drawing are provided:
15032-3401
FM/CSA Control Drawing
15032-3409
SAA Control Drawing
May 1998
B-1
APPENDIX B - HAZARDOUS AREA INSTALLATION
UM340-1
Hazardous (Classified) Location
Non Hazardous Location
Zone 0 Group IIC or
Class I, Division 1, Groups A, B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1
Model 340
Vmax, Ui = 30 V
Imax, Ii = 180 mA
Ci = 10.4 nF
Li = 0 mH
Pi = 1 Watt
Other Approved
Intrinsically Safe
Equipment
Vmax, Ui ≥ 30 V
Imax, Ii ≥ 180 mA,
Ci = Cother equipment
Li = Lother equipment
Associated Apparatus
10 V ≤ Vt or Voc or Uo ≤ 30 V
Isc or It or Io ≤ 180 mA
La or lo ≥ Lcable + Lother equipment
Ca or Co ≥ 10.4 nF + Ccable +
Cother equipment
Control Room Equipment
Must not use or generate in excess of
250 V rms or DC. (Um = 250 V)
General Notes:
•
•
•
All equipment in the loop must be approved by an organization acceptable to the authority having
jurisdiction.
Associated apparatus and control room equipment may be located in division 2 if so approved.
The installation must be in accordance with the National Electrical Code or Canadian Electrical
Code and ANSI/ISA-RP12.6.
Model 340:
• Up to 15 different Model 340s may be connected to each associated apparatus in multi-drop mode.
Rev
5
Date
12 June 96
Details
Model 340 re-examined
Approved
J. Sweeney
Title
Control Drawing for
Model 340 Transmitter
Moore Products Co.
Spring House PA, USA 19477
B-2
Drawing No.
15032-3401
Sheet 1 of 2
May 1998
UM340-1
APPENDIX B - HAZARDOUS AREA INSTALLATION
Associated Apparatus:
• Positive or negative, dual channel or supply return barrier may be used. Dual channel or supply return barriers combinations must be approved by the authority having jurisdiction. See Table 1 for
acceptable combinations of barrier parameters. Stahl series 8903 (active current limiting) barriers
must be used alone. They CANNOT be combined with any other barrier.
Table 1: Combinations of Barrier Parameters
Barrier 1
Barrier 2
Combined
Groups
A,B,C,D
Volts
28
Ohms
300
A,B,C,D
23
150
A,B,C,D
15
100
A,B,C,D
C,D
10
28
50
175
Volts
28
23
15
10
23
15
10
15
10
10
28
Volts
28.0
24.6
18.2
12.3
23.0
18.2
13.1
15.0
11.5
10.0
28
Ohms
300
150
100
50
150
100
50
100
50
50
175
Ohms
150
100
75
42
75
60
37
50
33
25
87
Resistance Parameters
Voc
Isc
1.5 x Isc
Volts
(mA)
(mA)
28.0
187
280
24.6
246
369
18.2
243
364
12.3
293
439
23
307
460
18.2
303
455
13.1
354
531
15.0
300
450
11.5
349
523
10.0
400
600
28.0
322
483
Acceptable Groups
Groups
Groups
A,B,C,D
C,D
No
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
CSA Parametric Approval Parameters:
Groups A, B, C, D
•
Vmax = 10 V, Rmin = 50 Ohms
•
Vmax = 15 V, Rmin = 100 Ohms
•
Vmax = 23 V, Rmin = 150 Ohms
•
Vmax = 28 V, Rmin = 300 Ohms
•
or Stahl series 8903: 68 mA, 31.5 Vmax
Groups C, D only
•
Vmax = 28 V, Rmin = 175 Ohms
•
or Stahl series 8903: 54.4 mA, 52.5 Vmax
Wiring
• Wiring must be twisted, shielded pairs, 20 Awg or larger, solid or stranded.
• If the inductance and capacitance of the wiring are not known then the following parameters may
be used:
• Capacitance = 60 pF per foot.
• Inductance = 0.20 uH per foot.
Rev
5
Date
12 June 96
Details
Model 340 re-examined
Approved
J. Sweeney
Title
Control Drawing for
Model 340 Transmitter
Moore Products Co.
Spring House PA, USA 19477
May 1998
Drawing No.
15032-3401
Sheet 2 of 2
B-3
APPENDIX B - HAZARDOUS AREA INSTALLATION
UM340-1
B-4
May 1998
UM340-1
APPENDIX C - TRANSMITTER CONFIGURATION DOCUMENTATION
C.0 TRANSMITTER CONFIGURATION DOCUMENTATION
HOW TO USE THIS APPENDIX
Use this appendix to document a transmitter configuration. The transmitter may be on-site or be a pending
purchase. Make additional copies of this appendix as necessary. Clearly record the needed data as follows:
On-Site Transmitter Configuration Record
1. Copy transmitter nameplate information onto the simulated nameplate on the next page.
2. Enter Customer Name and P.O. Number information in the box at the bottom of the next page.
3. Record the transmitter’s configuration data in the last column of the table on pages C3 to C5.
Data for Factory Configuration at Time of Purchase
1. Write the transmitter model number and tag on the simulated nameplate on the next page. Other
information is factory supplied at time of manufacture.
2. Enter Customer Name and P.O. Number information in the box at the bottom of the next page.
3. Record the desired configuration data on pages C3 to C5.
4. Attach a copy of these pages to your purchase order. Keep a copy for your files.
Subsequent pages contain the following information for each function block: name, parameter(s),
default(s), and blank space(s) to record specific transmitter data.
May 1998
C-1
APPENDIX C - TRANSMITTER CONFIGURATION DOCUMENTATION
UM340-1
TRANSMITTER CONFIGURATION RECORD
XTC TM
TRANSMITTER-CONTROLLER
MOORE
MODEL
B/M
SERIAL#
SPAN LIMITS
MWP
FCTRY CAL
TAG
Approvals and Certifications Area
X03068S0
For Factory Configuration
Please enter your name and transmitter purchase order number if
providing information for factory configuration of a transmitter.
Customer Name:
Customer P.O. Number:
The Sales Order Number below will be entered by Moore Products Co.
Moore Products Co. Sales Order Number:
C-2
May 1998
UM340-1
PARAMETER
APPENDIX C - TRANSMITTER CONFIGURATION DOCUMENTATION
RANGE OF VALUES
DEFAULT VALUE
Measured Variable
Units
inH2O, inHg, ftH2O, mmH2O,
mmHg, PSI, BAR, mBAR,
g/sq cm, kg/sq cm, PA, kPA,
Torr, Atm
inH2O (Range A, B, D)
Measured Variable
Range Lo
-999999 to 999999
0 (Range B, D, F, G)
Measured Variable
Range Hi
-999999 to 999999
DESIRED
VALUE
Sensor Input Block
PSI (Range F, G)
-1 (Range A)
1 (Range A)
10 (Range B)
100 (Range D, F)
1000 (Range G)
Damping Time
Constant
0 to 30 Seconds
1 Second
Transfer Function
Linear, x1/2, x3/2, x5/2
Linear
Transfer Function
Cutoff
0 to 30 %
4%
Zero Dropout
0 to 30 %
0%
Characterizer
On/Off
OFF
Characterizer Position
Transmitter Output/Controller
Output
TRANSMITTER
OUTPUT
X0
0.0 to 100.0%
0.00%
X1
0.0 to 100.0%
10.00%
X2
0.0 to 100.0%
20.00%
X3
0.0 to 100.0%
30.00%
X4
0.0 to 100.0%
40.00%
X5
0.0 to 100.0%
50.00%
X6
0.0 to 100.0%
60.00%
X7
0.0 to 100.0%
70.00%
X8
0.0 to 100.0%
80.00%
X9
0.0 to 100.0%
90.00%
X10
0.0 to 100.0%
100.00%
Y0
0.0 to 100.0%
0.00%
Characterizer
May 1998
C-3
APPENDIX C - TRANSMITTER CONFIGURATION DOCUMENTATION
PARAMETER
RANGE OF VALUES
DEFAULT VALUE
Y1
0.0 to 100.0%
10.00%
Y2
0.0 to 100.0%
20.00%
Y3
0.0 to 100.0%
30.00%
Y4
0.0 to 100.0%
40.00%
Y5
0.0 to 100.0%
50.00%
Y6
0.0 to 100.0%
60.00%
Y7
0.0 to 100.0%
70.00%
Y8
0.0 to 100.0%
80.00%
Y9
0.0 to 100.0%
90.00%
Y10
0.0 to 100.0%
100.00%
Fullscale Value
0.001 to 19999
100
Timebase
SEC/MIN/HR/DAY/WK
MIN
Multiplier
0.001 to 19999
1
Zero Dropout
0.0 to 30.0%
0%
Count Units
4-Character ASCII
CNTS
Local Display
Enable/Disable
DISABLE
Process Variable
Range Lo
-19999 to 19999
0.0000
Process Variable
Range Hi
-19999 to 19999
100.00
Process Variable Units
4-Character ASCII
PRCT
Auto Rerange
Enable or Disable
DISABLE
Local Display Code
MV, PV, %, MV/PV/%
MV
Autotoggle
On/Off
Off
Toggle Time
1 to 30 seconds
1 second
Tag
8-Character ASCII
PT
Descriptor
16-Character ASCII
XTC TRANSMITTER
Message
32-Character ASCII
MOORE PRODUCTS
CO.
UM340-1
DESIRED
VALUE
Totalizer
Operator Display
Transmitter ID
C-4
May 1998
UM340-1
APPENDIX C - TRANSMITTER CONFIGURATION DOCUMENTATION
PARAMETER
RANGE OF VALUES
DEFAULT VALUE
Date Format
DD/MM/YY
[Date transmitter
manufactured]
Device Serial Number
(8-digit)
0 to 16777215
[Device S/N on
nameplate]
Polling Address
0-15
0
Alarm 1
Enable/Disable
DISABLE
Alarm 1 Setpoint
-999999 to 999999
0.0000%
Alarm 1 Type
High/Low
LOW
Alarm 2
Enable/Disable
DISABLE
Alarm 2 Setpoint
-999999 to 999999
0.0000%
Alarm 2 Type
High/Low
LOW
Self-Clearing NAKS
On/Off
OFF
Alarm Out of Service
On/Off
OFF
Tracking Setpoint
Yes/No
NO
Power-Up Setpoint
-999999 to 999999
50.000%
Controller Status
On/Off
OFF
Controller Type
PID/PD/ID
PID
Action
Reverse/Direct
REVERSE
Proportional Gain (PD
and PID)
0.01 to 100.0
1.0000
Time Integral
0.01 to 1000 min./repeat
100.00 MIN/REPEAT
Time Derivative
0.01 to 100.0 min.
0.0000 MIN
Derivative Gain
1.00 to 30.00
10.0000
Manual Reset (PD
only)
0.0 to 100.0%
0.0000%
Manual Reset
Tracking (PD only)
No/Yes
NO
Automatic/Manual
AUTOMATIC
DESIRED
VALUE
Alarm
Setpoint Track and
Hold
Controller
A/M Transfer
Power-Up Mode
May 1998
C-5
APPENDIX C - TRANSMITTER CONFIGURATION DOCUMENTATION
PARAMETER
RANGE OF VALUES
DEFAULT VALUE
Automatic Mode Only
Yes/No
NO
Power-Up Valve
-1.0 to 110%
0.0000%
Lo, Hi, or Last Value
LO
UM340-1
DESIRED
VALUE
Output
Failsafe Level
n
C-6
May 1998
UM340-1
APPENDIX D - ELEVATION AND SUPPRESSION
D.0 APPENDIX D - ELEVATION AND SUPPRESSION CORRECTIONS
When installing a transmitter to measure liquid level, configuration of the Sensor Input Block often must
include an adjustment for one of two conditions introduced by the mounting arrangement:
•
Elevated Span - The Lower Range Value (LRV) of the transmitter needs to be configured above “0.”
See Figure D-1.
•
Suppressed Span - The LRV of the transmitter needs to be configured below “0.” See Figure D-2.
Fill Connection
LP Shut-Off
Valve
Max. Range
HP Shut-Off
Valve
Max. Range
Span
Vent
Min. Range
See
Section 9
Specifications
for range
limit.
Suppressed
Span
Span
Min. Range
X03070S0
Elevated Span: To
calculate maximum
distance, subtract
actual span setting
from range limit given
in specification.
LP line
filled with
condensate
HP Shut-Off
Valve
Distance X
Vent
HP
FIGURE D-1 Elevated Span Example
LP
X03070S0
HP
LP
FIGURE D-2 Suppressed Span Example
A brief discussion of how to make adjustments for elevation and suppression follows. Then two examples
of the calculations needed to determine configuration parameters are given. Finally, a brief procedure that
does not involve calculations is provided.
D.1 HOW ADJUSTMENT IS MADE
Because the Model 340 can handle elevation and suppression simply by setting parameters in the Sensor
Input Block, it is not necessary to introduce mechanical measures, such as installing piping backwards or
adding additional hardware.
The range of the transmitter can be set anywhere, forward or reverse acting, as long as the following
criteria are met:
LRL
LRV
URL
LRL
URV
URL
Span = [URV - LRV]
May 1998
Min Span
D-1
APPENDIX D - ELEVATION AND SUPPRESSION
UM340-1
Note that the URL (Upper Range Limit), LRL (Lower Range Limit), and Min Span are transmitter
dependent.
D.2 ELEVATION CALCULATION EXAMPLE
Figure D-3 shows a sample transmitter installation.
Max. Range
H2 O
SpG=1.0
1. Calculate the differential pressure as follows.
Pressure@DP = (H × SpG)High Side - (H × SpG)Low Side
100"
Min. Range
where H = Height
2. Calculate the LRV when the tank is empty.
LRV = (120 × 1.0)High Side - (0 × 1.0)Low Side
120"
Vent
LRV = +120 inH2O
3. Calculate the URV.
X03070S0
URV = LRV + Span
HP
URV = +120 + 100
URV = 220 inH2O
LP
FIGURE D-3 Elevation Calculation Example
Therefore, transmitter range should be 120 to 220 inH2O.
D.3 SUPPRESSION CALCULATION EXAMPLE
Figure D-4 shows a sample transmitter installation.
1. Calculate the differential pressure as follows.
Pressure@DP = (H × SpG)High Side - (H × SpG)Low Side
where H = Height
2. Calculate the LRV when the tank is empty.
LRV = (0 × 1.0)High Side - (100 × 1.0)Low Side
LRV = -100 inH2O
3. Calculate the URV.
URV = LRV + Span
URV = -100 + 100
Max. Range
Span
100"
H2O
SpG=1.0
Min. Range
HP
LP
X03070S0
LP Line
Filled with
Condensate
FIGURE D-4 Suppression Calculation Example
URV = 0 inH2O
Therefore, transmitter range should be -100 to 0 inH2O.
D-2
May 1998
UM340-1
APPENDIX D - ELEVATION AND SUPPRESSION
D.4 RECOMMENDED METHOD FOR 340 TRANSMITTERS
An alternative to making the above calculations and entering derived values into the Sensor Input Block is
to shift the span directly using the HART Communicator while adjusting the process levels.
1. Range the transmitter using the HART Communicator as for a zero-based span (e.g., 0-100 inH2O).
2. Install the transmitter on the process.
3. Fill the impulse pipe (wet legs) to the transmitter, but maintain the process at 0 (e.g., empty tank).
4. Perform one of the following:
•
Use the Active Input feature of the Communicator (access the Online/Configuration Xmtr/Sensor
Input Menu) to set the current pressure as the LRV. The configured span will be retained.
•
Use the Z magnetic switch to set the current pressure as the LRV. The configured span will be
retained.
This completes the procedure.
n
May 1998
D-3
APPENDIX D - ELEVATION AND SUPPRESSION
UM340-1
D-4
May 1998
UM340-1
APPENDIX E - CENELEC EEX D INSTALLATIONS
E.0 APPENDIX E - CENELEC EEX D INSTALLATIONS
The information his appendix applies only to transmitters with a CENELEC EEx d [ia] ia approval shipped
after 12/1/96. UM340-1 sections amended by this appendix are:
Section 4.3.5 Power Supply Requirements
Section 9 Model Designations and Specifications
MODEL DESIGNATION - The letter ‘M’ appears in the 15th (last) position in the model number stamped
on the permanent instrument nameplate. An example of a valid model number is 340DDBHAAB5N12M.
HAZARDOUS AREA CLASSIFICATION - CENELEC, EEx d [ia] ia, IIC T6, T5
The Model 340 with EEx d [ia] ia certification is suitable for use in Zone 1 explosive atmospheres only.
The basic protection technique is a flameproof enclosure (“d”) with an intrinsic safety barrier (“[ia]”)
incorporated into the terminal board. This built-in barrier insures both the electronics module and sensor
are intrinsically safe (“ia”). This barrier will cause errors in the 4-20 mA signal if the instrument is
operated outside the specified operating range.
WARNING
The model 340 with EEx d [ia] ia certification is only suitable for use in
Zone 1 explosive atmospheres when connected to equipment that does not
generate or use more than 250 Vac rms or DC.
POWER SUPPLY REQUIREMENTS - A special terminal board is installed to protect the sensor
assembly from excessive current draw during fault conditions. The following specifications apply.
Minimum Terminal-to-Terminal Compliance Voltage:............16.5 Vdc
Maximum Terminal-to-Terminal Compliance Voltage:...........26 Vdc
Maximum Load (ohms): ........................................................See graph on next page
Applying a terminal-to-terminal voltage greater than 26 Vdc can damage terminal board components.
Calculate the terminal-to-terminal voltage for your loop as follows.
Max. T-T Voltage = power supply voltage - (0.00385)(total loop resistance)
Min. T-T Voltage = power supply voltage - (0.0225)(total loop resistance)
May 1998
E-1
APPENDIX E - CENELEC EEX D INSTALLATIONS
Refer to UM340-1 for all other information concerning
an EEx d [ia] ia certified Model 340.
333
250
X03047S1b
INSTALLATION - Correct voltage polarity must be
applied to transmitter terminals. Applying a reverse
polarity voltage can damage the terminal board requiring
it to be replaced. See the wiring diagrams in UM340-1,
Section 4 Installation for correct voltage polarity.
422
Network Resistance, Ohms
Select a power supply that allows the terminal-to-terminal
voltage to remain between 16.5 and 26 Vdc over the
entire loop current range (typically, 3.85 mA to 22.5
mA).
UM340-1
Operating
Region
0
16.5
22
24
26
Power Supply, Vdc
NOTE: Shaded area shows the
operating region for both analog
and HART modes.
n
E-2
May 1998
UM340-1
APPENDIX F - STATIC PRESSURE CORRECTION
F.0 APPENDIX F - STATIC PRESSURE CORRECTION
The correction method used to achieve the static pressure specification in Section 9 is to reduce the
calibrated span by 0.9% for each 1000 psi of static pressure. An example follows.
Assumptions:
Required Calibration = 0-100 in H2O
Static (line) Pressure = 2000 psi
Correction:
Required Correction = (0.9%/1000 psi) x 2000 psi = 1.8%
Actual Calibration = 0-98.2 in H2O
n
April 1997
F-1
APPENDIX F - STATIC PRESSURE CORRECTION
F-2
UM340-1
April 1997
UM340-1
WARRANTY
WARRANTY
The Company warrants all equipment manufactured by it and bearing its nameplate, and all repairs made
by it, to be free from defects in material and workmanship under normal use and service. If any part of the
equipment herein described, and sold by the Company, proves to be defective in material or workmanship
and if such part is within twelve months from date of shipment from the Company's factory, returned to
such factory, transportation charges prepaid, and if the same is found by the Company to be defective in
material or workmanship, it will be replaced or repaired, free of charge, f.o.b. Company's factory. The
Company assumes no liability for the consequence of its use or misuse by Purchaser, his employees or
others. A defect in the meaning of this warranty in any part of said equipment shall not, when such part is
capable of being renewed, repaired or replaced, operate to condemn such equipment. This warranty is
expressly in lieu of all other warranties, guaranties, obligations, or liabilities, expressed or implied by the
Company or its representatives. All statutory or implied warranties other than title are hereby expressly
negated and excluded.
Warranty repair or replacement requires the equipment to be returned to one of the following addresses.
Equipment manufactured or sold by MOORE PRODUCTS CO.:
MOORE PRODUCTS CO.
Sumneytown Pike
Spring House, PA 19477
Equipment manufactured or sold by MOORE PRODUCTS CO. (CANADA) INC.:
MOORE PRODUCTS CO. (CANADA) INC.
2 km West of Mississauga Rd. Hwy. 7
Brampton, Ontario, Canada
Equipment manufactured or sold by MOORE PRODUCTS CO. (UK) LTD.:
MOORE PRODUCTS CO. (UK) LTD
Copse Road
Lufton, Yeovil
Somerset, BA22 8RN, ENGLAND
The warranty will be null and void if repair is attempted without authorization by a member of the
MOORE PRODUCTS CO. Service Department.
n
February 1997
W-1
WARRANTY
W-2
UM340-1
February 1997
PARTS LIST
PL340-1
Rev.3
May 1998
XTCTM PRESSURE TRANSMITTER-CONTROLLERS
MODELS 340A, D, F AND G
MOORE PRODUCTS CO., Spring House, PA 19477-0900
An ISO 9001 registered company.
PL340-1
PARTS LIST
PART NO.
DESCRIPTION
CONTENTS AND (DRAWING ITEM NUMBER(S))
QTY
16275-40
Upgrade Kit
1
16275-41
Upgrade Kit
16275-45
Upgrade Kit
16275-80
Upgrade Kit
Complete Enclosure Assembly with:
1/2-14 NPT Electrical Entrance (6)
Electronics Module (8)
Terminal Board (5)
Crenelated Enclosure Caps with O-Rings (3,4)
O-Ring (105)
Magnetic Screwdriver (1)
No Smart Display. For upgrading an earlier Model 340
transmitter having the larger, pushbutton-style enclosure.
Complete Enclosure Assembly with:
M20 x 1.5 Electrical Entrance (6)
Electronics Module (8)
Terminal Board (5)
Flush Enclosure Caps with O-Rings (3,4)
O-Ring (105)
Magnetic Screwdriver (1)
No Smart Display. For upgrading an earlier Model 340
transmitter having the larger, pushbutton-style enclosure.
Same as 16275-41 but includes Smart Display and Flush
Enclosure Cap with Sightglass.
Same as 16275-40 but includes Smart Display and
Crenelated Enclosure Cap with Sightglass.
16275-66
Enclosure Kit
1
16275-67
Enclosure Kit
Enclosure (6) with 1/2-14 NPT Electrical Entrance with
Ground Screws and Feedthrus only
Enclosure (6) with M20 x 1.5 Electrical Entrance with
Ground Screws and Feedthrus only
16275-68
Display Kit
1
16275-69
Display Kit
Includes Smart Display (9) and Crenelated Enclosure Cap
with Sightglass (3) and O-Ring (4). For adding a Smart
Display to a transmitter.
Includes Smart Display (9) and Flush Enclosure Cap with
Sightglass (3) and O-Ring (4). For adding a Smart Display to
a transmitter.
16275-400
Hardware Repair Kit
1
1
1
1
1
Magnetic Screwdriver (1)
1
O-Ring for Enclosure Cap, 2.86" ID. (4)
4
Pipe Plug, Allen, Electrical Entrance, ½-NPT (7)
1
TFE/PTFE Washer, 1.75" dia., Capsule to End Cap, Model 340D4
and Models 340A and G with Tantalum Diaphragms (104)
Screw, Terminal Board and Internal and External Grounds,
4
8/32 x 3/8 Slotted TORX Pan Hd. (201)
Lockwasher, Enclosure Grounds, #8 External Tooth (202)
4
Wire Clamp (203)
2
Screw, Smart Display/Electronics Module Mounting, 4-40 x
4
0.875 Slotted TORX Pan Hd (204)
Screw, Enclosure Stop/Retaining, 8-32 x ¼ Skt. Hd. Cap
2
(205)
Lockwasher, #8 Internal Tooth (206)
2
Set Screw, Enclosure Neck, 10-32 x 3/8 Cup Pt. (207)
2
TFE/PTFE Washer, 1.1" dia., Process Connection Block (NS)
2
4
PARTS LIST
PART NO.
16275-401
PL340-1
DESCRIPTION
Capsule Repair Kit,
SST
CONTENTS AND (DRAWING ITEM NUMBER(S))
QTY
Capacitor, Feedthru, 5000pF; user supplied Loctite® or
equivalent required for installation (NS)
4
Vent/Drain Plug and Screw, ¼, SST (102)
2
Pipe Plug, ¼-NPT, SST, Models 340D and F and Models
2
340A and G with Tantalum Diaphragms (103)
O-Ring, Capsule Neck (105)
1
TFE/PTFE Washer, 1.75" dia., Capsule to End Cap, Model 340D2
and Models 340A and G with Tantalum Diaphragms (104)
16275-402
Capsule Repair Kit,
Hastelloy
Vent/Drain Plug and Screw, ¼, Hastelloy-C (102)
2
Pipe Plug, ¼-NPT, Hastelloy-C, Models 340D and F and
2
Models 340A and G with Tantalum Diaphragms (103)
O-Ring, Capsule Neck (105)
1
TFE/PTFE Washer, 1.75" dia., Capsule to End Cap, Model 340D2
and Models 340A and G with Tantalum Diaphragms (104)
16275-403*
O-Ring/Gasket Kit
O-Ring for Enclosure Cap (4)
12
TFE/PTFE Washer, 1.75" dia., Capsule to End Cap, Model 340D12
and Models 340A and G with Tantalum Diaphragms (104)
O-Ring, Capsule Neck (105)
12
TFE/PTFE Washer, 1.1" dia., Process Connection Block (NS)
12
16275-404
Electronics Module
Circuit Board Assembly Mounted in the Plastic Cup (8)
1
16275-405
16275-406
Terminal Board Kit
Terminal Board Kit
Standard Terminal Board (5)
Transient Suppressor Terminal Board (5)
1
1
16275-408
Service Kit, Monel
Plug, Flats, ¼-28M, Monel (102)
2
Plug, Vent, Hex, ¼ NPT, Monel (102)
2
Plug, Flats, ¼ NPT, Monel (102)
2
O-Ring, Capsule Neck (105)
1
TFE/PTFE Washer, 1.75" dia., Capsule to End Cap, Model 340D2
and Models 340A and G with Tantalum Diaphragms (104)
16275-411
Magnetic Screwdriver
Magnetic Screwdriver for XTC (1)
12
16275-412
Enclosure Cap Wrench
Cap Wrench (2)
12
16275-471
Enclosure Cap Kit,
Crenelated
Enclosure Cap Kit,
Flush
Crenelated Enclosure Cap with Sightglass and O-Ring (3,4)
1
Flush Enclosure Cap with Sightglass and O-Ring (3,4)
1
Smart Display Kit
Replacement Smart Display (9)
1
16275-472
16294-1
3
PL340-1
PARTS LIST
PART NO.
DESCRIPTION
CONTENTS AND (DRAWING ITEM NUMBER(S))
-----
Sensor Assembly
For Model 340A, D, F, or G with capsule end caps(s),
vent(s)/ drain(s), and bolts (101) - Refer to UM340-1, Model
Designation and Specification section and configure a model
number that includes the following:
♦ basic model number
♦ body parts
♦ input range
♦ fill fluid
♦ output
♦ all other selections are N
♦ process diaphragm
Sample Model Number: 340D B D S AA B N N N N N
15965-659
Connection Blocks
15965-660
Connection Blocks
15965-1218
Connection Blocks
15965-1219
Connection Blocks
15965-53
Connection Blocks
Process Connection Block Kit, Dual, SS, for Model 340D
(NS)
Process Connection Block Kit, Dual, Hastelloy, for Model
340D (NS)
Process Connection Block Kit, Single, SS, for Models 340A,
F, and G (NS)
Process Connection Block Kit, Single, Hastelloy, for Models
340A, F, and G (NS)
Process Connection Block Washer (NS)
QTY
1
1
1
1
1 ea.
Notes:
•
•
•
•
Refer to User’s Manual UM340-1 for accessory part numbers and for servicing a transmitter.
See exploded views on first page for transmitter disassembly and for item reference numbers.
An * identifies a recommended on-hand spare part. Include transmitter nameplate information when
ordering spare or replacement parts.
NS - Not shown in exploded views.
n
4
Process Automation Solutions
An ISO 9001 registered company.
www.mooreproducts.com
For prompt, personal attention to your instrumentation and control needs, contact the Moore
Products Co. location nearest you. Information on other Moore Products Co. representatives in
your area is available from these regional locations.
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INDIA
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Tel: +91 212 770171
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Midrand
Tel: +27 11 466 1673/9
Fax: +27 11 466 1618
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Tel: +39 02 929054 1
Fax: +39 02 92905454
MEXICO
CANADA
Moore Products Co. (Canada) Inc.
P.O. Box 370
Brampton, Ontario L6V 2L3
Tel: +1 905 457 9638
Fax: +1 905 457 4182
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Factory Systemes
22, rue Vladimir Jankelevitch
Emerainville
77437 Marne la Vallee cedex 2
France
Tel: +33 1 64 61 68 68
Fax: +33 1 64 61 67 34
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Tintoreto No. 32-302
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C.P. 03910
Tel: +52 5 611 9858
+52 5 615 1948
+52 5 615 0262
+52 5 615 0238
Fax: +52 5 611 4541
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Fax: +44 1935 706969
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Moore Process Automation Solutions
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Spring House, PA 19477-0900
Tel: +1 215 646 7400
Fax: +1 215 283 6358
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Moore Products Co. (S) Pte. Ltd.
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#03-01 Hiap Huat House
Singapore 339940
Tel: +65 299 6051
Fax: +65 299 6053
Printed on post-consumer recycled paper.
July 1998