54-631.2 ETA2 IO

Thermatel®
Enhanced Model TA2
Software v2.x
Installation and Operating Manual
Thermal
Dispersion
Mass Flow
Transmitter
Read this Manual Before Installing
This manual provides information on the TA2 Thermal
Dispersion Mass Flow Transmitter. It is important that all
instructions are read carefully and followed in sequence.
Detailed instructions are included in the Installation section of this manual.
Conventions Used in this Manual
Certain conventions are used in this manual to convey
specific types of information. General technical material,
support data, and safety information are presented in
narrative form. The following styles are used for notes,
cautions, and warnings.
NOTES
Notes contain information that augments or clarifies
an operating step. Notes do not normally contain
actions. They follow the procedural steps to which
they refer.
Cautions
Cautions alert the technician to special conditions that
could injure personnel, damage equipment, or reduce
a component’s mechanical integrity. Cautions are also
used to alert the technician to unsafe practices or the
need for special protective equipment or specific
materials. In this manual, a caution box indicates a
potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
WARNINGS
Warnings identify potentially dangerous situations or
serious hazards. In this manual, a warning indicates an
imminently hazardous situation which, if not avoided,
could result in serious injury or death.
Safety Messages
Follow all standard industry procedures for servicing electrical equipment when working with or around high
voltage. Always shut off the power supply before touching any components.
WARNING! Explosion hazard. Do not connect or disconnect equipment unless power has been switched off or
the area is known to be non-hazardous.
Low Voltage Directive
For use in Installation Category II, Pollution Degree 2. If
equipment is used in a manner not specified by manufacturer, protection provided by equipment may be impaired.
Notice of Trademark, Copyright, and Limitations
Magnetrol® & MAGNETROL logotype, and
THERMATEL are registered trademarks of
MAGNETROL
International,
Incorporated.
THERMATEL Model TA2 Thermal Dispersion
Mass Flow Transmitter is a tradename of MAGNETROL
International, Incorporated.
Copyright © 2014 MAGNETROL International,
Incorporated.
All rights reserved.
Performance specifications are effective with date of
issue and are subject to change without notice.
MAGNETROL reserves the right to make changes to the
product described in this manual at any time without
notice. MAGNETROL makes no warranty with respect
to the accuracy of the information in this manual.
Warranty
All MAGNETROL electronic level and flow controls are
warranted free of defects in materials or workmanship for
one full year from the date of original factory shipment.
If returned within the warranty period; and, upon factory
inspection of the control, the cause of the claim is
determined to be covered under the warranty; then,
MAGNETROL will repair or replace the control at no
cost to the purchaser (or owner) other than transportation.
MAGNETROL shall not be liable for misapplication, labor
claims, direct or consequential damage or expense arising
from the installation or use of equipment. There are no
other warranties expressed or implied, except special written
warranties covering some MAGNETROL products.
Quality Assurance
The quality assurance system in place at MAGNETROL
guarantees the highest level of quality throughout the
company. MAGNETROL is committed to providing full
customer satisfaction both in quality products and quality service.
The MAGNETROL Corporate quality
assurance system is registered to ISO
9001 affirming its commitment to
known international quality standards
providing the strongest assurance of
product/service quality available.
Thermatel® Enhanced Model TA2
Thermal Dispersion Mass Flow Transmitter
Table of Contents
1.0 Quick Start Installation
1.1 Probe Installation ......................................................4
1.2 Wiring ......................................................................4
1.3 Configuration ...........................................................5
2.0 Installation
2.1 Unpacking ................................................................6
2.2 Electrostatic Discharge (ESD) Handling Procedure .....6
2.3 Installation ................................................................7
2.3.1 Electronics......................................................7
2.3.2 Probe/Flow Body............................................7
2.4 Wiring ......................................................................9
2.4.1 Power and Signal Connection ........................9
2.4.2 Ground Connection.....................................10
2.4.3 4-20 mA Output..........................................10
2.4.4 Pulse/Alarm Output .....................................10
2.4.5 Remote Electronics.......................................11
2.4.5.1 Probe Wiring ........................................11
2.5 Configuring the Transmitter....................................12
2.5.1 Initialization .................................................12
2.5.2 Operator Keypad..........................................13
2.5.2.1 Menu Traversal Mode............................13
2.5.2.2 Item List Selection ................................13
2.5.2.3 Numeric Entry......................................14
2.5.2.4 Character Data Entry Mode..................15
2.5.2.5 Increment/Decrement Digit Mode........15
2.5.3 Password.......................................................16
2.5.4 Configuration Menu Overview ....................16
2.5.5 Run Mode....................................................18
2.5.6 Measured Values...........................................18
2.5.7 Basic Configuration Menu ...........................20
2.5.8 I/O Configuration Menu .............................21
2.5.9 Totalizer .......................................................22
2.5.10 Transistor Output.........................................24
2.5.10.1 Pulse Rate Calculation Example............25
2.5.11 Advanced Configuration Menu ....................26
2.5.11.1 Custom Unit Multiplier Example .........28
2.5.12 Device Information ......................................29
2.5.13 Diagnostics Menu ........................................30
2.5.14 Factory Configuration ..................................36
2.5.15 Probe Parameters ..........................................37
2.5.16 Calibration Parameters .................................38
2.5.17 Gas Parameters .............................................39
2.5.18 Air Equivalency Calibration .........................40
2.6 Configuration Using HART ® .................................41
2.6.1 Connection ..................................................41
2.6.2 HART Revision Table ..................................41
2.6.3 HART Display Menu...................................41
3.0 Reference Information
3.1 Description .............................................................46
3.2 Theory of Operation...............................................46
3.3 Display Module ......................................................47
3.4 Troubleshooting ......................................................47
3.4.1 Error Messages .............................................49
3.4.1.1 Fault Messages.......................................50
3.4.1.2 Warning Messages .................................51
3.4.1.3 Information Messages............................51
3.5 Diagnostics Test ......................................................52
3.5.1 Heater Setting ..............................................52
3.5.2 Zero Power Test............................................52
3.5.3 Calibration Verification Procedure ...............52
4.0 Maintenance
4.1 Circuit Board Replacement .....................................54
4.2 Probe Replacement .................................................55
4.3 RTD Calibration.....................................................56
4.3.1 RTD Calibration..........................................56
4.3.2 Set Point Adjustment ...................................56
4.4 Flow Recalibration ..................................................57
4.5 Agency Approvals....................................................59
4.6 Replacement Parts...................................................61
4.7 Specifications ..........................................................62
4.7.1 Performance .................................................62
4.7.2 Transmitter ..................................................62
4.7.3 Probe............................................................62
4.7.4 Flow Body....................................................62
4.7.5 Physical ........................................................63
4.8 Model Numbers......................................................65
4.8.1 Transmitter...................................................65
4.8.2 Insertion Probe.............................................66
4.8.3 Flow Body....................................................67
4.8.4 Connecting Cable ........................................68
Glossary .........................................................................69
Appendix A....................................................................70
Appendix B....................................................................73
Appendix C....................................................................74
Flow Application Questionnaire....................................75
1.0
Quick Start Installation
The TA2 is calibrated and configured with the information
supplied to MAGNETROL with the order. The instrument
can be installed, wired, and place directly into operation.
1.1
Pipe
centerline
Probe Installation
Insert the probe into the pipe or duct at the appropriate
location. It is recommended that the sensor be located on
the center line of the pipe and that the flow arrow be positioned in the direction of flow.
1" (25 mm)
See Appendix A for recommended straight run and flow
conditioning plate installation details (if applicable).
Figure 1
1.2
Probe Installation into Pipe or Duct
Using a Compression Fitting
Wiring
Warning:
Explosion Hazard. Do not connect or disconnect
equipment unless power has been switched off or the
area is known to be non-hazardous.
NOTE: Make sure the electrical wiring to the TA2 is complete and in
compliance with all regulations and codes. For a maximum
ambient temperature of 80° C use wiring rated up to 264 VAC
and 105° C. For a maximum ambient temperature of 70° C use
wiring rated up to 264 VAC and 95° C.
AC Power input
(100 – 264 VAC)
TB1
AC
INPUT
DC INPUT
-
+
Analog Output 1
Active or Passive
connections
TB3
PULSE/
ALARM
LOOP1/HART
OUTPUT
P-
Pulse/Alarm Output
Active or Passive
connections
TB4
AP+ A+
P-
AP+ A+
L1
L2
100-264 VAC
50/
60Hz
DC Power input
(15 – 30 VDC)
TB2
NOTE: The AC power terminal blocks accept 12-22 AWG wire and the
DC power terminal blocks accept 14-30 AWG wire. Select wire
size consistent with power requirements. The mA output and
pulse output also accept 14-30 AWG wire.
TB2
TB3
P-
TB4
P+
R1
D6
POWER
LOOP2
TB1
1. Remove the cover of the rear compartment.
2. Pull power supply and control wiring through conduit
connection.
3. Connect power leads to proper terminals.
a. 100 to 264 VAC – Make connections to TB1.
Connect the “hot” wire to L1 and the second wire to L2.
b. 15 to 30 VDC – Make the connections to TB2.
Connect the positive wire to (+) and the negative lead
to (–).
OUTPUT
F1
TB5
Figure 2
Wiring Connections
4
NOTE: Ensure that the correct wiring is made to the appropriate terminals. Connecting the DC power to the AC terminals will
Analog Output 2
cause the unit not to operate. Connecting the AC power to the
Passive
connections only
DC terminals will blow the fuse and potentially cause damage
TB5
to the electronics boards.
NOTE: The green ground screw in the rear of the housing should be
used for earth ground.
54-631 THERMATEL Model TA2 Transmitter
4. Connect the 4-20 mA signal wiring to TB3. Make connections to A-, A+ for an active output signal (power supplied
by TA2) or P-, P+ for a passive signal using an external
power supply.
5. Optional Pulse Output: connect signal wiring to TB4.
Make connections to A-, A+ for an active output (power
supplied by the TA2) or P-, P+ for a passive signal using
an external power supply. (See specifications for voltage
requirements.)
6. Optional second mA output – connect signal wiring to
TB5. Make connections to P- and P+ using an external
power supply. This is a passive connection requiring external
power supply.
NOTE: If using both the passive pulse output and second mA output
see Appendix B.
7. Replace the housing cover.
1.3
Configuration
The TA2 is pre-configured using the information supplied
with the order. If desired, the user can view or change any
of the configuration data. See Configuring the Transmitter,
Section 2.5
54-631 THERMATEL Model TA2 Transmitter
5
2.0
Installation
2.1
Unpacking
Unpack the instrument carefully making sure all components have been removed from the packing material.
Inspect all components for damage. Report any concealed
damage to the carrier within 24 hours. Check the contents
of the carton making sure they correspond with the packing
slip and purchase order. Save the Calibration Certificate
containing the calibration and configuration data for
future reference.
Verify that the model number imprinted on the nameplate
matches the number on the packing slip and the purchase
order. Report any discrepancies to the factory. Record the
serial number for future reference when ordering parts.
Model Number
Serial Number
2.2
Electrostatic Discharge (ESD)
Handling Procedure
1.
2.
3.
4.
MAGNETROL electronic instruments are manufactured
to the highest quality standards. These instruments utilize
electronic components which may be damaged by static
electricity present in most work environments. The following
steps are recommended to reduce the risk of component
failure due to electrostatic discharge:
Ship and store circuit boards in anti-static bags. If an antistatic bag is not available, wrap board in aluminum foil.
Do not place boards on foam packing materials.
Use a grounding wrist strap when installing and removing
circuit boards. A grounded workstation is also recommended.
Handle printed circuit boards only by the edges. Do not
touch components or connector pins.
Ensure that all electrical connections are completely secure
and none are partial or floating. Ground all equipment to
a good earth ground.
NOTE: The instrument is rated per IEC 61010-1 for use in Installation
Category II, Pollution Degree 2.
6
54-631 THERMATEL Model TA2 Transmitter
2.3
Installation
2.3.1 Electronics
The instrument is rated for use in Class I, Division 1 and
Class I, Division 2 areas. The enclosure is also rated
NEMA 4X. Remote electronics (optional) should be
installed in an easy to access location within 500 feet
(150 meters) of the sensor. The electronics should not be
installed in areas where ambient temperature exceeds
+175° F (+80° C). If ambient temperature is between
-22° to -65° F (-30° to -54° C), the unit will operate but
the display will not be readable.
Provide watertight seals for all wiring entrances in the
enclosure to maintain the NEMA 4X rating. Use appropriate NEC section when installing the instrument.
NOTE: A switch or circuit breaker should be installed in close proximity to the equipment and within easy reach of the operator.
It should be marked as the disconnecting device for the
equipment.
2.3.2 Probe/Flow Body
Pipe
centerline
1" (25 mm)
Figure 3
Probe Installation into Pipe or Duct
Using a Compression Fitting
Proper installation of the probe in the pipe or duct is
essential for accurate air or gas flow measurement. Normal
procedures for installing any type of flow element should
be followed. See Appendix A for additional information on
probe location.
A flow arrow is etched on the sides of the probe to designate flow direction. The instrument is calibrated with the
flow in this direction. Ensure that the flow arrow is aligned
in the direction of flow. The instrument is unable to recognize flow direction if inserted with the flow arrow in the
wrong direction.
It is generally recommended that the sensor be located in
the center of the pipe. This location provides less sensitivity
to changes in flow profile. Sensors mounted through compression fittings have the ability to field adjust the sensor
to the desired location by using the dimensions as shown
in Figure 3.
It may be necessary to rotate the head of the instrument to
view the display while maintaining the proper flow orientation. This is accomplished by loosening the set screw on
the bottom of the housing, rotating the enclosure to the
desired position and re-tightening the set screw. The second
set screw is a stop to prevent over rotating the enclosure.
See figure 4.
Figure 4
54-631 THERMATEL Model TA2 Transmitter
7
Pressure ratings of the compression fitting:
Stainless steel ferrules:
1500 psig at +70° F (103 bar at +20° C)
1375 psig at +400° F (95 bar at +200° C)
Teflon® ferrules:
100 psig (7 bar)
Various methods of mounting the probe include compression fittings, threads, and flanged connections. Refer to
probe model numbers. The insertion probe can be
installed through a compression fitting. The use of a
bored-through fitting with 3⁄4" or 1" NPT connection for
3
⁄4" outside diameter tube is recommended.
The use of Teflon® ferrules should be considered if repeated reposition of the sensor is considered. The stainless steel
ferule can only be tightened once as it makes a permanent
indentation on the probe. If using a compression fitting
with stainless steel ferrules, ensure that the probe is in the
desired location before tightening.
NOTE: The TA2 flow measurement is based on a fully developed turbulent flow profile in a pipe with the specified inner diameter.
Accuracy will be affected if these conditions are not obtained.
Installing the probe in a tee is not recommended as the flow
profile and the flow area are distorted (See figure 5).
For applications where it is desirable to install or remove
the probe without having to shut down the process,
The MAGNETROL Retractable Probe Assembly (RPA)
can be utilized. See the TA2 Sales Brochure (MAGNETROL
bulletin 54-140) for more information.
WARNING To avoid potential damage or injury, never loosen a
compression fitting while sensor is under pressure.
Figure 5
Probe Installation into a Tee Fitting is
Not Recommended
NOTE: Remote electronics is recommended for operating temperatures greater than +250° F (+120° C) or in locations where the
temperature of the electronics will exceed +175° F (+80° C).
Optionally, an insertion probe with extended probe length to
provide at least four inches (100 mm) between the electronics
and the compression fitting can be utilized.
NOTE: The sensor must be installed in a location where moisture
cannot drip or come in contact with the heated element. Any
contact with condensed moisture in the gas flow will cause a
false high flow indication. Consider mounting the probe at
a 45° angle from top, from the side or bottom of the pipe to
minimize possibility of condensed moisture running down the
probe and contacting the sensor (see Figure 6). In extreme
cases, it may be necessary to insulate or even heat trace the
pipe to prevent the condensation of moisture.
The TA2 with an insertion probe provides a point measurement and assumes that a fully developed profile exists.
See Appendix A. The user has the ability to compensate
the flow measurements based upon flow profile considerations under the Advanced Configuration section of the
software. See Section 2.5.11.
Figure 6
Install the TA2 at an Angle
where Condensed Moisture
may be Present
8
NOTE: If equipment is used in a manner not specified by manufacturer,
protection provided by equipment may be impaired.
54-631 THERMATEL Model TA2 Transmitter
2.4
Wiring
There are two connections in the electronics enclosure for
3
⁄4" NPT or M20 connections. These are generally used as
one connection for input power and one for output signal.
2.4.1 Power and Signal Connection
The instrument has separate wiring connections for AC (100
to 264 VAC) and DC (15 to 30 VDC). AC power wiring
connections are made to terminal block TB1. DC connections are made to terminal block TB2. Refer to Figure 8.
Front
Compartment
NOTE: The AC power terminal blocks accept 12-22 AWG wire and
the DC power terminal blocks accept 14-30 AWG wire. Select
wire size consistent with power requirements. The mA output
and pulse output also accept 14-30 AWG wire.
Rear
Compartment
For a maximum ambient temperature of 80° C use wiring rated
up to 264 VAC and 105° C. For a maximum ambient of 70° C
use wire rated up to 264 VAC and 95° C.
Caution: OBSERVE ALL APPLICABLE ELECTRICAL CODES
AND PROPER WIRING PROCEDURES.
Figure 7
Wiring Housing Cover
AC Power input
(100 – 264 VAC)
TB1
AC
INPUT
100-264 VAC
50/
60Hz
DC Power input
(15 – 30 VDC)
TB2
DC INPUT
+
-
Analog Output 1
Active or Passive
connections
TB3
NOTE: The green screw in the rear of the housing should be used for
earth ground.
PULSE/
ALARM
LOOP1/HART
OUTPUT
P-
Pulse/Alarm Output
Active or Passive
connections
TB4
AP+ A+
P-
AP+ A+
L1
L2
F2 TEST
TB2
TB3
P-
TB4
P+
R1
D6
POWER
LOOP2
TB1
F1
TEST
OUTPUT
F1
1. Make sure the power source is turned off.
2. Unscrew and remove housing cover of rear compartment.
Refer to Figure 7.
3. Pull power supply and control wires through conduit
connection.
4. Connect power leads to proper terminals. Refer to Figure 8.
a. VAC (100 to 264 VAC) Make connections to TB1.
Connect hot wire to terminal marked L1 and the second
wire to the terminal marked L2.
b. DC (15 to 30 VDC)–Make connections to TB2. Connect wires to terminals (+) and (-) on the terminal block.
TB5
Analog Output 2
Passive
connections only
TB5
Figure 8
Wiring Connections
Input Wiring Board
5. Connect the 4-20 mA signal wiring to terminal block TB3.
Refer to Section 2.4.3.
6. If the TA2 model has the optional pulse/alarm output,
connect the signal wiring to terminal block TB4.
Connections for both an active (powered) connection and
a passive (requires external power supply) are provided.
Refer to section 2.4.4.
7. The TA2 has the optional second mA output connect signal
wiring to terminal block TB5. This output is a passive
connection requiring an external power supply.
8. Replace housing cover. Installation is complete.
Caution: In hazardous areas, do not apply power to the unit until
the conduit is sealed and the enclosure cover is screwed
down securely.
NOTE: Install using Teflon® tape at all conduit entries (maximum 2
turns).
54-631 THERMATEL Model TA2 Transmitter
9
2.4.2 Ground Connection
The instrument must be grounded in accordance with
Article 250 of the National Electric Code.
2.4.3 4-20 mA Output
AC
INPUT
-
+
P-
A 4-20 mA output (Analog Output 1) of the flow rate is
available at terminal block TB3. This output signal is
isolated from the instrument. An active or a passive connection is available—see definition below.
PULSE/
ALARM
LOOP1/HART
OUTPUT
AP+ A+
P-
AP+ A+
L1
L2
100-264 VAC
60Hz
50/
DC INPUT
TB2
TB3
P-
TB4
P+
R1
D6
POWER
LOOP2
TB1
OUTPUT
F1
TB5
For units with the optional second mA output (Analog
Output 2) this connection is available at terminal block
TB5; this output is isolated from the input power and
from the primary 4-20 mA loop and shares a common
with the pulse output. A passive connection is only available for this loop.
Active Connection—Use the active connection when
the TA2 is providing power for the 4-20 mA signal.
Use connections A- and A+ (see figure 8). The active
connection will drive a 1000-ohm loop resistance.
Figure 9
Wiring Connections
Input Wiring Board
NOTE: If using both the passive pulse output and
second mA output see Appendix B.
Passive Connection—Use the passive connection
when an external power supply or the control system
is used to power the 4-20 mA loop. Use connections
P- and P+ (see figure 8). The resistance is dependent
upon the customer-supplied power supply.
2.4.4 Pulse/Alarm Output
The optional pulse signal is isolated from the input power
and from the primary mA loop output. This signal shares a
common with the secondary mA output (Analog Output 2).
The pulse output is available with either an active or passive connection.
Pulse/alarm output—Use the active connection when the
TA2 is providing power for the pulse/alarm output. Use
connections A- and A+ on TB4 (see figure 8).
Use the passive connection when an external power supply
is used to provide power to the pulse/alarm. Use connections
P- and P+ on TB4.
NOTE: Electrical specifications for pulse and alarm output are
specified below.
• Pulse Output:
• Active: 24 VDC (±10%) power, 150 mA
• Passive: 2.5 to 60 VDC power, 1.5 Amps
• Alarm Output:
• Active: 24 VDC (±10%) power, 100 mA
• Passive: 2.5 to 60 VDC power, 1 Amp.
10
54-631 THERMATEL Model TA2 Transmitter
2.4.5 Remote Electronics
Power/Loop Board in
Electronics Housing
1
2
3
4
5
If the electronics are remote from the probe, a remote
board with terminal blocks is provided in the housing on
the probe. For cable lengths up to 150 feet, the connection
between the probe and electronics should be an 8-conductor
shielded cable (Belden 8104). For cable lengths up to
500 feet, a 10-conductor shielded cable (Belden 8305) is
used. This cable length can be adjusted in the field. If cable
other than the recommended Belden cable is used, following
are the maximum resistances which should be utilized:
TB
1
6
7
8
1
01
91
J1
8 Conductor –maximum resistance of 5.4 ohms
10 Conductor –maximum resistance of 10.0 ohms
Caution: The probe and electronics are calibrated and shipped as a
matched set. The model number is indicated on both the
electronics nameplate and the probe nameplate; verify
that they are the same.
2.4.5.1 Probe Wiring
TB2
orange
brown
black
blue
white
5
4
3
2
1
1 2 3 4 5 6 7 8 9 10
1.
2.
3.
To Probe
Figure 10
Probe Housing
4.
REMOTE WIRING CABLE CONNECTIONS
Belden 8104 Belden 8305
TB1
TB2
Max 200 Feet Max 500 Feet
connection at
connection
(60 meters) (150 meters)
Circuit Board
Probe Housing
Wire Color
Wire Number
in Electronics
Green/White
1
1
1
White/Green
2
2
2
Blue/White
3
3
3
White/Blue
4
4
4
Brown/White
5
5
5
White/Brown
6
6
6
Orange/White
7
7
7
White/Orange
8
8
8
9
9
9
10
10
10
Shield
Not used
11
Shield
54-631 THERMATEL Model TA2 Transmitter
5.
6.
7.
8.
9.
The probe housing contains a remote board with terminal
blocks for ease of wiring between the probe and the electronics. An 8-wire (Belden 8104) or 10-wire (Belden
8305) shielded interconnecting cable from the probe housing to the instrument is required. Refer to Figure 10 for
wiring connections inside the probe housing and for
remote cable wiring from the probe housing to the electronics housing.
Remove electrical power to the instrument.
Remove and unplug the display module if provided.
Remove the two hex head fasteners using a 1⁄4" socket. This
will remove a module consisting of the processor circuit
board and the power loop circuit board.
Unplug the electrical connections at J1 of the power loop
board.
Probe wiring connections are made to TB1 on the same
side of the power loop circuit board. Refer to Figure 10.
Reattach the electrical connections to J1.
Reassemble the circuit boards in the enclosure. Make sure
that the probe wiring does not get pinched between the
standoffs on the circuit board and the attachment lugs in
the housing.
Reinstall the display module if provided.
Apply power to the instrument.
11
2.5
Configuring the Transmitter
The TA2 electronics are easy to set up and configure to the
user’s specifications. When specified with the order, the
configuration settings are programmed into the instrument
at the factory. If not, or if the user wants to modify the
configuration settings, follow these instructions for configuring the instrument. The primary structure of the software
is divided into eight main groups:
Measured Values
View Selected Values
Basic Config
Configuration of essential
programming information
I/O Config
Configure all input/output
functions
Advanced Config
Additional configuration which
affects the unit operation
Device Info
Provides information on
the instrument
Diagnostics
Factory Configuration
Run Mode
Test operation of instrument
Factory calibration information
Normal operating mode
All necessary information can be input using the 4-button
keypad located on the display module or via HART if
supplied. If the TA2 is supplied with HART, PACTware ™
can be used to review or change configuration.
NOTE: The Display Module can be rotated in 90-degree increments.
Remove cover, remove the two screws holding the display
module, rotate to desired location and reattach display
module. See Figure 11.
2.5.1 Initialization
When power is first applied to the TA2 there is an initialization period for the sensor to reach stabilization. During
this time the TA2 will output a 4 mA signal and the display (if provided) will read “Initializing.”
Only after the sensor has stabilized and a valid flow measurement is obtained will the display show a flow measurement. The output signal will be active and the totalizer
will begin counting.
Figure 11
Display Module can be Rotated
12
54-631 THERMATEL Model TA2 Transmitter
2.5.2 Operator Keypad
The TA2 has a local user interface using a 2-line ¥ 16 character liquid crystal (LCD) and 4-push-button keypad.
All measurement data and configuration information is
shown in the LCD.
The TA2 is configured via a “tree” type menu structure
where it is easy to access branches of the tree to configure
the various parameters. The four push buttons have different functions for various operating modes in the menu
structure.
2.5.2.1 Menu Traversal Mode
Push Button
Keystroke Action
Up
Moves to the previous menu
Down
Moves to the next item in the menu
Back
Moves back one level to the previous higher branch
Enter
Enters into the lower level branch
2.5.2.2 Item List Selection
Data is selected from a pre-specified list of entries. When
Enter
key is depressed on a menu item the following
modes are available. The symbol (◊) is shown on the right
most character of the 2nd line to indicate that various
selections are available.
Push Button
Keystroke Action
Up
Moves to the previous selection in the list
Down
Moves to the next selection in the list
Back
Returns to the previous mode without changing selection
Enter
Accepts the selection and returns to the menu traversal mode
NOTE: If a key is not pressed for 5 minutes, the display returns to the
run mode.
54-631 THERMATEL Model TA2 Transmitter
13
2.5.2.3 Numeric Entry
The Numeric Entry Mode is used to enter numeric values.
This mode is accessed when the Enter Key is pressed on a
menu item that requires entry of a numeric value. Data is
entered at the cursor position:
Push Button
Keystroke Action
Up
Moves to the next digit (0,1,2,3…9). If held down the digits
scroll until the push button is released. The leftmost position
cycles between “–” (minus symbol) and blank.
Down
Moves to the next digit (9,8,7,6…0). If held down the digits
scroll until the push button is released. The leftmost position
cycles between “–” (minus symbol) and blank.
Back
Moves the cursor to the left and deletes the digit. If the cursor
is located at the leftmost position the entire value is deleted
and the previous saved value is displayed.
Enter
Moves the cursor to the right. If the cursor is located at a
blank position, the new value is saved and the display returns
to the previous menu.
NOTE: Numeric entries are left justified and new values are entered
from left to right. A decimal point can be entered after the first
digit is entered. The leftmost position used for either a “–”
negative symbol or blank which implies a positive value.
14
54-631 THERMATEL Model TA2 Transmitter
2.5.2.4 Character Data Entry Mode
This mode is most commonly used when entering a new
local tag line into the TA2. The local tag as shipped from
the factory is “MAGNETROL TA2” and can be changed
to permits the user to identify the instrument with a the
actual tag line of the instrument or the service. When this
mode is entered, a cursor marks the leftmost character on
the 2nd line.
Push button
Keystroke Action
Moves to the next character (Z, Y, X, W, …). If held down
the characters scroll until the push button is released.
Up
Down
Moves to the previous character (A, B, C, D, …). If held down
the characters scroll until the push button is released.
Back
Moves the cursor to the left. If the cursor is located at the
leftmost position the screen is exited without changing the
original characters.
Enter
Moves the cursor to the right. If the cursor is located at the
rightmost position the new value is saved and the display
returns to the previous menu.
2.5.2.5 Increment/Decrement Digit Mode
The Increment/Decrement digit entry mode is used with
some screens for changing numeric values.
Push button
54-631 THERMATEL Model TA2 Transmitter
Keystroke Action
Up
Increases the displayed value. If held down the digits scroll
until the push button is released. Depending upon what
screen is being revised, the increment amount may change by
a factor of 10 after the value has been increased 10 times.
Down
Decreases the displayed value. If held down the digits scroll
until the push button is released. Depending upon what
screen is being revised, the decrement amount may change
by a factor of 10 after the value has been decreased 10 times
Back
Return to the previous menu without changing the original
value which is immediately redisplayed.
Enter
Accepts the displayed value and returns to the previous menu.
15
2.5.3 Password
A password protection system restricts access to portions of
the menu which affect the unit’s operation and configuration. The default user password installed in the TA2 at the
factory is 0 which effectively disables the user password
feature. This allows complete configuration to be done
without entering a password.
If desired, a new user password can be entered in the
Advanced Configuration in the New Password screen.
The password can be changed to any numerical value up
to 255. Once the password is changed from the factory
default value of 0 then the new password will be required
whenever any configuration values are changed.
2.5.4 Configuration Menu Overview
Configuration of the TA2 is performed by use of a treelike menu structure. The chart at right shows an overview
of the top level menu items. This basic configuration
structure is used both with the user interface using the
16-character display and keypad and in the HART menu
structure (see section 2.6.3).
16
54-631 THERMATEL Model TA2 Transmitter
TA2 User Interface
Menu Hierarchy Overview
Home
Measured Values
See Page 18
Basic Config
Flow Area
See Page 20
I/O Config
AO1 Loop Config
See Page 21
See Page 21
AO2 Loop Config
See Page 21
Advanced Config
See Page 26
Totalizers
See Page 23
Secondary loop, Transistor
Output and HART®
configuration are optional
Device Info
See Page 29
Diagnostics
History
See Page 30
Factory Config
Signal Value
See Page 36
54-631 THERMATEL Model TA2 Transmitter
See Page 30
See Page 30
17
2.5.5 Run Mode
The Run Mode is the normal display for the TA2. The
user has the option of selecting displayed values such as
Flow, Mass, Temperature, Totalized Flow, Tag Line,
Custom Units, or mA output. These values will rotate at
2-second intervals on the display during operation. Run
Mode appears on power-up or after a 5-minute period
with no keypad activity.
The main menu is used to access the various subroutines.
From the Run mode, press any key to enter the Main
Menu. The following describes the various selections
available.
2.5.6 Measured Values
The Measured Values menu is used to display the current
values measured by the TA2 and determine which parameters will be shown on the display during run mode. Enter
this section by pressing
when Measured Values is displayed from the Main Menu.
From the factory, the Home Menu will show the tag line
and the flow value. To add or remove parameters from the
Home Menu press the
key. Use the
or
keys to
add (On Main Disp) or remove (Off Main Disp) variables.
To return to the rotating Home Menu, simply press the
key twice.
Note that the Second Loop current (AO2 Loop Current)
and Alarm Status are available only on units where these
options have been purchased.
18
54-631 THERMATEL Model TA2 Transmitter
start
Model TA2 [HT, NP]
Ver 2.0 a0
* [label] *
[string or value]
UP
DN
UP
DN
ENT
DEL
Measured Values
to select
UP
DN
ENT
DEL
Rotating screens
* Status *
[fault or warning]
Shown only if fault or warning
DEL
DEL
UP
DN
UP
DN
DEL
Basic Config
to select
UP
DN
Flow
nnn units
Mass
nnn units
UP
DN
DEL
Process Temp
nnn units
ENT
ENT
ENT
On Main Disp
Off Main Disp
UP
DN
I/O Config
to select
ENT
DEL
UP
DN
R Totalizer
nnnn units
ENT
UP
DN
DEL
Advanced Config
to select
ENT
DEL
UP
DN
UP
DN
DEL
Device Info
to select
NR Totalizer
nnnn units
DEL
A01 Loop Curr
nn.nn mA
UP
DN
UP
DN
DEL
DEL
Diagnostics
to select
UP
DN
A02 Loop Curr
nn.nn mA
UP
DN
DEL
ENT
ENT
ENT
ENT
ENT
Secondary loop
and alarm are
only available on units
which have these options
(Model TA2-A4XX-XXX).
Local Tag
Magnetrol TA2
UP
DN
DEL
TA2 User Interface
Home and Associated Menus
Factory Config
to select
DEL
UP
DN
Custom Units
nnnn units
UP
DN
DEL
Alarm Status
nnnn units
UP
DN
DEL
Previous Menu
to select
UP
DN
54-631 THERMATEL Model TA2 Transmitter
19
2.5.7 Basic Configuration Menu
The Basic Configuration menu is used to select the display units and enter specific information for the
application. Access this section by pressing Enter when Basic Config is displayed from the Main Menu.
To calculate the flow or mass, it is necessary to accurately enter the inside area of the pipe or duct. If the
pipe or duct is circular, simply enter the inside diameter; the cross sectional area of the pipe is automatically calculated. If the duct is rectangular, skip over the entry of diameter, and directly enter the cross
sectional area in the area section. The instrument will then back calculate an equivalent diameter.
UP
DN
Basic Config
–> to select
ENT
DEL
Language
[selection]
English
Francais
Deutsch
Español
РуссКий
ENT
DEL
UP
DN
DEL
Flow Units
[selection]
ENT
DEL
UP
DN
DEL
Mass Units
[selection]
SCFM
Nm3/min
SCFH
Nm3/h
SCFD
Nm3/d
MSCFD
NI/min
MM SCFD
Nl/h
NI/d
ENT
DEL
lbs/min
lbs/h
lbs/d
kg/min
kg/h
kg/d
UP
DN
DEL
Temp Units
[selection]
ENT
DEL
Fahrenheit
Celsius
ENT
DEL
lb/ft3
kg/m3
ENT
DEL
inches
feet
meters
millimeters
UP
DN
DEL
Density Units
[selection]
UP
DN
DEL
Diameter Units
[selection]
UP
DN
DEL
Area Units
[selection]
ENT
DEL
in2
ft2
m2
mm2
TA2 User Interface
System Configuration Menu
UP
DN
DEL
DEL
Flow Area
to select
ENT
DEL
Pipe ID
[selection]
UP
DN
UP
DN
Previous Menu
to select
Area
[selection]
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
Configuration Parameter Explanation
Language
The TA2 can be configured in English (default value), French, German,
Spanish or Russian
Flow Units
Selection of SCFM, SCFH, SCFD, MSCFD, MMSCFD, Nm3/min, Nm3/h, Nm3/d,
NI/min, Nl/h NI/d. Should other units of flow be desired, the Custom Unit feature can
be used in the Advanced Configuration Menu
Mass Units
Selection of lbs/min, lbs/h, lbs/d, kg/min, kg/h, kg/d. Should some other units of flow
be desired, the Custom Unit feature can be used in the Advanced Configuration
Menu
Temperature Units
Selection of Fahrenheit, Celsius
Density Units
lb/ft3, kg/m3
Diameter Units
Selection of inches, feet, meters, mm
Area Units
in2 (square inches), ft2 (square feet), m2 (square meters), mm2 (square mm)
Flow Area
The TA2 requires entry of the pipe size or flow area to properly calculate the flow rate.
This can either be entered by specifying the ID of the pipe or the flow body or by
entering the flow area. Units of measurement are specified above.
20
54-631 THERMATEL Model TA2 Transmitter
2.5.8 I/O Configuration Menu
The I/O Configuration menu is used to set up the operations of 4–20 mA output, the totalizer,
and the pulse/alarm output.
UP
DN
I/O Config
to select
ENT
DEL
A01 Loop Config
to select
UP
DN
ENT
DEL
Loop Control
[selection]
ENT
DEL
Flow
Mass
ENT
DEL
decimal entry
in selected
units
ENT
DEL
decimal entry
in selected
units
ENT
DEL
22 mA
3.6 mA
Hold
ENT
DEL
Flow
Mass
Process Temp
ENT
DEL
decimal entry
in selected
units
ENT
DEL
decimal entry
in selected
units
UP
DN
DEL
LRV (4 mA) Set
[entered value]
UP
DN
DEL
UP
DN
URV (20 mA) Set
[entered value]
UP
DN
DEL
Fault State
[selection]
UP
DN
Previous Menu
to select
UP
DN
Secondary loop
configuration is
only available on units
which have this option.
UP
DN
DEL
A02 Loop Config
to select
ENT
DEL
Loop Control
[selection]
UP
DN
DEL
LRV (4 mA) Set
[entered value]
UP
DN
UP
DN
DEL
URV (20 mA) Set
[entered value]
UP
DN
Previous Menu
to select
DEL
Transistor Output
configuration is
only available on units
which have this option.
DEL
Totalizers
to select
ENT
DEL
UP
DN
see page 23
for Totalizer
Configuration
Transistor Out
to select
ENT
DEL
UP
DN
DEL
Damping (0 –15)
[entered value]
UP
DN
DEL
54-631 THERMATEL Model TA2 Transmitter
UP
DN
see page 24 for
Transistor Output
Configuration
ENT
DEL
[inc/dec]
0–15
TA2 User Interface
I/O Configuration Menu
Previous Menu
to select
21
The previous page shows the I/O configuration menu for
setting up the 4-20 mA loop, the Totalizers, and the
Damping. The basic TA2 has a single 4-20 mA loop
referred to as AO1. Optionally the TA2 can be provided
with a second 4-20 mA loop referred to as AO2 and a
Transistor Output that can be configured to provide either
a Pulse Output or an Alarm Output (see page 10 for specifications). The configuration menu for the Totalizers is
shown on page 23 and the Transistor output is shown on
page 24.
Configuration Parameter
Explanation
Loop Control
Selects which measurement (Flow or Mass) will control the mA loop (AO1) output.
AO2 permits selection of mA value for Temperature, Flow or Mass; Temperature is
the default selection.
LRV (4 mA) Set
Enter the desired Lower Range Value (LRV) or the 4 mA value
URV (20mA) Set
Enter the desired Upper Range Value (URV) or the 20 mA value
Fault State
Select 3.6 mA, 22 mA or Hold (last value). Note that the Fault State is only
configurable on the primary loop (AO1).
Previous Menu
Previous Menu exits the 4-20 mA Configuration Menu
Configuration Parameter
Explanation
Totalizer
The TA2 provides both a resettable and a non-resettable totalizer.
Configuration information on the totalizers is found on page 23.
Transistor Output
Provides either a Pulse output which is proportional to the flow rate or
an alarm which can be used as a low flow or high flow indication. Configuration
information begins on page 24.
Damping
Increasing the Damping will smooth the TA2 display and the loop output. This may
be used in cases when turbulence is causing fluctuations in the measurement.
The damping value is expressed in time constants. A one-second time constant
means that with a step change in flow, the measured flow value will reach approximately
63% of the new value in one second and approximately 99% of the new value in
five seconds. The lower limit is 0 which means no damping (other than the inherent
response time of the sensor); the upper limit is 15 seconds.
2.5.9 Totalizer
The totalizer provides seven digits of resolution. In the
event of a fault indication, the totalizer will not accumulate. When the value in the totalizer exceeds 9,999,999,
the totalizer will rollover. The Total Time will keep counting.
Both the Resettable and Non-Resettable totalizers have
individual multiplier factors which can be used to prevent
too frequent rollover and potential loss of data.
The Totalizer data is stored in nonvolatile memory, eliminating the need of backup batteries. Data is written hourly.
22
54-631 THERMATEL Model TA2 Transmitter
UP
DN
Totalizers
to select
Totalizer Units
[selection]
ENT
DEL
ENT
DEL
SCF
Nm3
Nl
lb
kg
ENT
DEL
Disabled
Enabled
ENT
DEL
1
10
100
1,000
10,000
100,000
UP
DN
R Total Mode
[selection]
DEL
UP
DN
R Total Mult
[selection]
DEL
UP
DN
R Totalizer
nnnnnnn units
DEL
UP
DN
R Total Time
nnnnnh nnm nns
DEL
UP
DN
R Totalizer
Reset
DEL
ENT
DEL
UP
DN
NR Total Mult
[selection]
DEL
UP
DN
ENT
DEL
Are You Sure?
[selection]
ENT
DEL
No
Yes
1
10
100
1,000
10,000
100,000
NR Totalizer
nnnnnnn units
DEL
UP
DN
DEL
NR Total Time
nnnnnh nnm nns
TA2 User Interface
I/O Configuration Menu
UP
DN
Totalizers
Previous Menu
to select
DEL
Configuration Parameter
Explanation
Totalizer Units
The Totalizer Units permits selection of the units for both the resettable and the non-resettable
totalizers. Select SCF (Standard Cubic Feet), Nm3 (Normal Cubic Meters), Nl (Normal Liters),
lb (Pounds), or kg (Kilograms).
R Total Mode
R Total Mode allows the user to enable or disable the Resettable totalizer. The default mode is Enabled.
R Total Mult
The R Total Mult permits selection of the multiplier to be used for the resettable totalizer. The function
of the totalizer multiplier is such that if the units are SCF and the multiplier is set to 100, then the
totalizer will increment for each 100 SCF. The default value is 1.
R Totalizer
This is a read-only screen that displays the present value of the resettable totalizer.
R Total Time
This is a read-only screen that displays the time that has elapsed since the resettable totalizer
was last reset.
R Totalizer Reset
The R Totalizer Reset screen allows the user to reset the total flow and elapsed time of the resettable
totalizer to zero. Since this action will permanently lose this data, a second chance is provided with an
“Are you sure” selection.
NR Total Mult
The NR Total Mult permits selection of the multiplier to be used for the Non-resettable totalizer.
The function of the totalizer multiplier is such that if the units are SCF and the multiplier is set to 100,
then the totalizer will increment for each 100 SCF. The default value is 1000.
NR Totalizer
This is a read-only screen that displays the value of the Non-resettable totalizer.
NR Total Time
This is a read-only screen that displays the time that corresponds to the value of the NR Totalizer.
54-631 THERMATEL Model TA2 Transmitter
23
2.5.10 Transistor Output
The optional transistor output can be configured to provide a pulse output proportional to the flow
rate or an alarm indication where the output can serve as a low flow or a high flow alarm indication.
When used as a pulse output a multiplier factor can be applied. A selection of maximum frequency
ensures that the pulse output from the TA2 does not exceed the maximum allowable frequency of any
external counter. The default is 10 KHz.
UP
DN
Transistor Out
to select
ENT
DEL
Output Function
[selection]
ENT
DEL
Pulse Output
Alarm
Disabled
UP
DN
DEL
Pulse Out Config
[to select]
ENT
DEL
Pulse Out Units
[selection]
ENT
DEL
SCF
Nm3
Nl
lbs
kg
ENT
DEL
0.0001
0.001
0.01
0.1
1
10
100
1000
ENT
DEL
10
100
1000
10000
UP
DN
DEL
Multiplier
[selection]
UP
DN
UP
DN
DEL
Frequency
[selection]
UP
DN
DEL
Previous Menu
to select
Flow or mass units per
the Primary Variable
DEL
Alarm Config
to select
ENT
DEL
UP
DN
DEL
ENT
DEL
decimal entry
ENT
DEL
High Flow
Low Flow
UP
DN
Previous Menu
to select
DEL
UP
DN
Alarm Operation
[selection]
UP
DN
DEL
24
Alarm Set Point
[entered value]
Previous Menu
to select
TA2 User Interface
I/O Configuration Menu
54-631 THERMATEL Model TA2 Transmitter
Configuration Parameter
Explanation
Output Function
Selects the operation of the transistor output. Can be set up for Pulse Output,
Alarm, or Disabled. Default is disabled.
Pulse Output Units
Permits selection of the units for the pulse output. Select SCF (Standard Cubic Feet),
Nm3 (Normal Cubic Meters), Nl (Normal Liters), lb (Pounds), or kg (Kilograms).
Multiplier
Use this factor to match the pulse output from the TA2 with the input of the
remote totalizer or counter. The value represents the flow in selected units which
correspond to one pulse output.
Frequency
Selects maximum frequency output from the TA2. This should match the maximum input frequency of the external counter/totalizer. For instance: mechanical
totalizers will have a lower maximum frequency.
Alarm Set Point
Enter the desired set point for the alarm. Units are same as those selected
under AO1 loop control. The alarm contacts will change state when this value is
reached. There is a built in hysteresis requiring the flow to change by 10% for the
switch to reset.
Alarm Operation
Choose Low Flow or High Flow. When Low Flow is selected, the contacts will
remain closed at flow rates above the set point value and will open when the flow
rate is equal to or less than the entered set point value. If High Flow is selected,
the contacts will remain closed at flow rates below the set point value and will
open when the flow rate is equal to, or greater than, the entered set point.
2.5.10.1 Pulse Rate Calculation Example
NOTE: See Appendix C example.
54-631 THERMATEL Model TA2 Transmitter
25
2.5.11 Advanced Configuration Menu
The Advanced Configuration menu sets advanced parameters that may occasionally be required for
proper operation of the TA2.
UP
DN
Advanced Config
to select
ENT
DEL
New Password
[entered value]
ENT
DEL
UP
DN
DEL
Install Factors
to select
decimal entry
UP
DN
ENT
DEL
A+Bx+Cx^2, A=
[entered value]
ENT
DEL
decimal entry
UP
DN
UP
DN
DEL
A+Bx+Cx^2, B=
[entered value]
ENT
DEL
decimal entry
DEL
A+Bx+Cx^2, C=
[entered value]
ENT
DEL
decimal entry
ENT
DEL
decimal entry
in selected
units
ENT
DEL
1 atm
1 bar
UP
DN
DEL
Previous Menu
to select
UP
DN
DEL
GasCal Table A /B
[selection]
ENT
DEL
UP
DN
DEL
Auto Switching
[selection]
UP
DN
ENT
DEL
UP
DN
DEL
STP Conditions
to select
Disabled
Enabled
UP
DN
ENT
DEL
Temperature
[entered value]
UP
DN
UP
DN
see next page
Table A
Table B
DEL
Pressure
[selected value]
UP
DN
TA2 User Interface
Advanced Configuration Menu
DEL
Previous Menu
to select
UP
DN
26
54-631 THERMATEL Model TA2 Transmitter
UP
DN
DEL
Custom Unit
to select
UP
DN
ENT
DEL
Custom Unit Text
[entered value]
ENT
DEL
alphanumeric
entry
(6 characters)
ENT
DEL
decimal entry
ENT
DEL
[inc/dec]
ENT
DEL
[inc/dec]
ENT
DEL
[inc/dec]
UP
DN
DEL
Custom Unit Mult
[entered value]
UP
DN
UP
DN
DEL
Previous Menu
to select
UP
DN
UP
DN
DEL
D/A Trim A01
to select
ENT
DEL
D/A Trim 4 mA
[value]
UP
DN
DEL
D/A Trim 20 mA
[value]
UP
DN
UP
DN
DEL
Previous Menu
to select
UP
DN
UP
DN
DEL
D/A Trim A02
to select
ENT
DEL
D/A Trim 4 mA
[value]
Secondary loop
configuration is
only available on units
which have this option.
UP
DN
UP
DN
DEL
D/A Trim 20 mA
[value]
ENT
DEL
[inc/dec]
UP
DN
DEL
Previous Menu
to select
UP
DN
54-631 THERMATEL Model TA2 Transmitter
DEL
Previous Menu
to select
TA2 User Interface
Advanced Configuration Menu (cont)
UP
DN
27
Configuration Parameter
Explanation
New Password
The default password is 0 which effectively disables the password feature.
This allows the configuration to be modified without entering a password.
If desired, a different password can be entered in the New Password screen.
The password can be changed to any numeric value up to 255. If the password is
changed from the factory default of 0, then the new password will be required
whenever any configuration values are changed. If the user changes the password,
the display will show an encrypted value. Contact MAGNETROL Technical Support
with this value to determine the actual password which was last entered.
Install Factors
Permits the user to enter field adjustment factors to make adjustments to the flow
measurement. These might be due to flow profiles considerations. The formula
is a second order polynomial equation where adjusted flow = a + bx + cx2 where
x is in units selected for AO1 (Analog Output 1) Loop Control. Linear adjustments
(changing the B factor) are the simplest. Ensure that units of measurement are
finalized before Install Factors are determined. Changing units of measurement
after Install Factors are calculated can result in reset of the Install Factors and a
warning message.
Gas Cal Table A /B
Permits the user to select calibration for two different gases. If specifically ordered
with calibration for two different gases, then each gas table will represent the calibration data for each gas. If calibrated for a gas other than air, the “A” table
will represent the calibration data for the specified gas and the “B” table will
represent the calibration data for air within a selected calibration range. The two
gas tables can also be used for different ranges of the same gas.
Auto Switching
Allow automatic switching between a low flow Table A and a high flow Table B. It
is necessary to have a dual calibration and distinct flow rate differences between
tables in order to perform switching function.
STP Conditions
Permits the user to select STP (Standard Temperature and Pressure) conditions.
Also referred to as Standard Conditions or Normal Conditions. Any value for temperature can be entered. Pressure can be selected to be 1 Atmosphere or 1 Bar.
Adjustment of the STP conditions will affect the flow calculations.
Custom Units Text
The TA2 permits the user to create any desired units of flow measurement that is
not shown in the standard selection. The user can select the text for the custom
units using up to a 6-character abbreviation.
Custom Unit Mult
This multiplier is used to calculate the Custom Unit value. The Custom Unit value
is equal to the Loop Control Variable selected under AO1 Loop Control times this
custom multiplier. See example in section 2.5.11.1.
D /A Trim 4mA
Permits the user to fine tune the 4 mA point. This is done at the factory; yet,
there may be differences in control systems. To adjust the 4 mA point, use the
up or down arrows until the control system indicates 4 mA.
D /A Trim 20mA
Permits the user to fine tune the 20 mA point. This is done at the factory; yet,
there may be differences in control systems. To adjust the 20 mA point, use the
up or down arrows until the control system indicates 20 mA.
2.5.11.1 Custom Unit Multiplier Example
If the AO1 Loop Control is selected to be Nm3/h and the user desires to use custom units on
NL/min, the multiplier 16.67 (1000/60) is used to adjust the flow measurements in Nm3/h to
Nl/min.
28
54-631 THERMATEL Model TA2 Transmitter
2.5.12 Device Information
This section is used to display information about the device. Also in this section is the ability for the
user to enter a local tag describing the location of the instrument.
UP
DN
Device Info
to select
ENT
DEL
Input Local Tag
[entered value]
ENT
DEL
alphanumeric
entry
(16 chars)
ENT
DEL
TA2-A0
TA2-A1
TA2-A4
ENT
DEL
alphanumeric
entry
(8 chars)
UP
DN
Magnetrol S/N
[value]
DEL
UP
DN
Magnetrol M/N
[entered value]
DEL
UP
DN
Model TA2 [HT | NP]
[Ver 2.0 a0]
DEL
UP
DN
Input HART Tag
[entered value]
DEL
UP
DN
HART Poll Addr
[entered value]
DEL
ENT
DEL
[inc/dec]
0-15
ENT
DEL
integer entry
HART configuration is
available on units
which have HART on
the primary loop.
UP
DN
HART Device ID
[entered value]
DEL
UP
DN
Previous Menu
to select
DEL
TA2 User Interface
Device Information Menu
UP
DN
Configuration Parameter
Explanation
Input Local Tag
From the factory this tag is shown as “MAGNETROL TA2” but this can be changed to
describe the application or the flow transmitter number. The tag can contain a maximum of 16 characters. All upper and lower case letters, numbers and other characters are provided for the tag. See section 2.5.2.4 for details on entering characters.
MAGNETROL S/N
Displays the MAGNETROL serial number of the instrument. This is needed if
information on the specific instrument is desired in the future.
MAGNETROL M/N
Displays the first 5 digits of the TA2 serial number. This is used by the firmware
to determine what screens are shown in this user interface menu.
Model TA2[ ]
Provides information on the firmware used in this version of the TA2.
Input HART Tag
Enter a HART tag with length up to 8 digits. This screen is only visible on units
with HART.
HART Poll Addr
Select a HART Poll Address from 0 to 15. Enter 0 for a single installation.
Enter 1–15 for a multi-drop installation. Default value is 0. This screen is only
visible on units with HART.
HART Device ID
Required for units with HART. This screen is only visible on units with HART.
54-631 THERMATEL Model TA2 Transmitter
29
2.5.13 Diagnostics Menu
The Diagnostics Menu contains both informational items and diagnostic screens that can assist in
obtaining information on the operation of the unit and troubleshooting if faults or warnings occur.
UP
DN
Diagnostics
to select
ENT
DEL
ENT
DEL
Previous Menu
to select
History
[current status]
UP
DN
Event nn
[Diagnostic Text]
ENT
DEL
Eventnn Occurred
nnnnnh nnm nnsec
ENT
DEL
UP
DN
DEL
Run Time
nnnnh nnm nnsec
UP
DN
Run-time since
history was reset.
Eventnn Duration
nnnnnh nnm nnsec
ENT
DEL
UP
DN
DEL
History
Reset
ENT
DEL
Are You Sure?
[selection]
ENT
FxdSgl xxx mW
xxxx xx units
ENT
DEL
No
Yes
UP
DN
DEL
Signal xxx mW
xxxx xx units
DEL
UP
DN
DEL
Delta Temp
[temp value]
UP
DN
DEL
TA2 User Interface
Diagnostics Menu
Heater Setting
[integer value]
UP
DN
DEL
Max Process Temp
[max value]
ENT
DEL
Reset?
[selection]
ENT
DEL
No
Yes
ENT
DEL
Reset?
[selection]
ENT
DEL
No
Yes
UP
DN
DEL
Electronics Temp
[current value]
UP
DN
DEL
see next page
30
Max Elec Temp
[max value]
UP
DN
54-631 THERMATEL Model TA2 Transmitter
Configuration Parameter
Explanation
History
Displays the present status and the sequence in which any diagnostic events may
have occurred. The second line of the menu shows the present status. If there are
no present diagnostic events, this screen will have History on the top line and OK
on the bottom line. Pressing d escends to a lower menu level to view diagnostics
events that have been logged in History. Each “event” is indicated by the event
number label. The first event number label presented corresponds to the most
recent diagnostic event. This event number also indicates the number of diagnostic events currently in the History submenu. Pressing the
or
will cycle
between the relative time of the occurrence and the duration of the event.
Run Time
Displays how much time has elapsed since the History was last reset.
History Reset
Provides a means to clear all of the diagnostic events that are stored in the
History log.
Signal
Provides a live signal of the mW reading from the sensor. Also shown on the second
line is the calculated flow rate. This is based on the units selected under AO1
Loop Control. This data can be compared against the original calibration
document to determine if there has been any change in the configuration.
Pressing
enters the Fixed Signal Mode. When in this mode, pressing the
or
permits the user to change the signal; the TA2 then calculates the flow
which corresponds with this signal. Press to return to the main menu.
NOTE: During fixed signal mode the mA output of AO1 will adjust with change
in signal. The Totalizers will stop operation and the display will show the
“In Test Mode” message.
Delta Temp
Displays the temperature difference between the two RTDs.
Heater Settings
Displays the current value sent to the heater. This can be compared against an
actual reading which can be obtained from connections on the circuit board.
See section 3.5.1.
Maximum Process Temp
Displays the maximum temperature which the sensor has recorded.
Electronic Temp
Displays the current temperature in the electronics enclosure.
Max Elect Temp
Displays the maximum temperature which the electronics have recorded.
54-631 THERMATEL Model TA2 Transmitter
31
2.5.13 Diagnostics Menu (cont.)
UP
DN
DEL
Min Elec Temp
[min value]
Reset?
[selection]
ENT
DEL
UP
DN
DEL
Probe Status
to select
ENT
DEL
No
Yes
UP
DN
Temp Sensor
OK/Shorted/Open
ENT
DEL
TA2 User Interface
Diagnostics Menu
UP
DN
Flow Sensor
OK/Shorted/Open
UP
DN
Probe Heater
OK/Shorted/Open
UP
DN
UP
DN
Previous Menu
to select
UP
DN
UP
DN
DEL
ENT
Zero Power Test
to test
DEL
UP
DN
Delta T Unstable
[temperature]
Delta T Stable
[temperature]
DEL
UP
DN
DEL
UP
DN
Amb T Unstable
[temperature]
Ambient T Stable
[temperature]
DEL
UP
DN
UP
DN
UP
DN
UP
DN
DEL
Low Cal Validate
to test
ENT
DEL
Delta T Unstable
[temperature]
Saved Test DeIT
[temp] [temp]
ENT
DEL
Save Temp?
[selection]
ENT
DEL
UP
DN
DEL
UP
DN
DEL
Amb T Unstable
[temperature]
No
Yes
UP
DN
32
54-631 THERMATEL Model TA2 Transmitter
Configuration Parameter
Explanation
Min Elect Temp
Displays the minimum temperature which the electronics have recorded.
Probe Status
Press
to select and then the
or
arrows to scroll between the Temp
Sensor, Flow Sensor, and Probe Heater. If the probe is operational, the display
will show “OK”. If there is a problem with the probe, then the diagnostics will
to return to the main menu.
show either “Shorted” or “Open.” Press
Zero Power Test
Diagnostic test. Note that the mA output signal will be disabled during this test.
During this test the heater is turned off and the sensor is given time for the sensors to stabilize. The temperature difference between the sensors is displayed.
See section 3.5.2 for more information on this test.
Low Cal Validate
Hi Cal Validate
The Low Cal Validate and the Hi Cal Validate test will verify that the heat transfer
characteristics of the sensor have not changed. This test will verify that the unit
is still within calibration. The tests are performed when off-line with the TA2 in air
and in a water bath. See section 3.5.3 for more information on this test.
54-631 THERMATEL Model TA2 Transmitter
33
2.5.13 Diagnostics Menu (cont.)
UP
DN
DEL
UP
DN
ENT
Hi Cal Validate
to test
DEL
Delta T Unstable
[temperature]
Saved Test DeIT
[temp] [temp]
UP
DN
ENT
DEL
Save Temp?
[selection]
ENT
DEL
DEL
No
Yes
Amb T Unstable
[temperature]
DEL
UP
DN
DEL
A01 Loop Test
[current value]
UP
DN
ENT
DEL
[inc/dec]
UP
DN
DEL
A02 Loop Test
[current value]
ENT
DEL
[inc/dec]
Secondary loop
configuration is
only available
on units which
have the optional
secondary loop.
UP
DN
UP
DN
Test Pulse
to select
DEL
Pulse Output
diagnostics are
only available
on units which
have the optional
Transistor Output
interface.
DEL
ENT
DEL
Num Test Pulses
[selection]
UP
DN
UP
DN
Pulse Out Test
to test
UP
Previous Menu
to select
UP
DN
DEL
ENT
DEL
ENT
DEL
5
10
25
50
100
250
500
1000
2500
5000
10000
Pulse Out Test
In Progress/Complete/Fail/Timeout
DN
Previous Menu
to select
TA2 User Interface
Diagnostics Menu (cont)
UP
DN
34
54-631 THERMATEL Model TA2 Transmitter
Configuration Parameter
Explanation
AO1 Loop Test
Shows the current mA value output on the 4–20 mA output signal for the first (AO1)
or
arrows.
loop. This value can be increased or decreased by pushing the
Pressing
or
returns the mA signal to normal operation.
AO2 Loop Test
Shows the current mA value output on the 4–20 mA output signal for the second
(AO2) loop. This value can be increased or decreased by pushing the
or
arrows. This menu selection is only shown on units that have the optional second
mA loop. Pressing
or
returns the mA signal to normal operation.
Tests the pulse output signal by sending a specific number of pulses to the external
totalizer/counter. TA2 must be configured for Pulse Output. See sections 2.5–10.
Test will fail if not configured for Pulse Output.
Test Pulse
Once the specific number of pulses is selected, the user will then push the
down
arrow to the next screen to conduct the test. When the
arrow is
pressed, the TA2 will stop generating pulses based on the flow rate and will then
generate the specified number of pulses selected. The display will show status.
At completion of the test, the screen will indicate that the test is complete. At this
time the user can verify that this number of pulses has been received by the external device.
Press
to conduct the test again; press
two times to return to normal operation where the pulse is generated based on the measured flow rate. The TA2 will
“Time Out” and return to normal operation after 5 minutes if no action is taken.
54-631 THERMATEL Model TA2 Transmitter
35
2.5.14 Factory Configuration
UP
DN
Factory Config
to select
ENT
DEL
Probe Params
to select
ENT
DEL
see page 37
ENT
DEL
see page 38
ENT
DEL
see page 38
UP
DN
DEL
Cal Parameters A
to select
UP
DN
DEL
Cal Parameters B
to select
UP
DN
DEL
Control Params
to select
UP
DN
ENT
DEL
Coeff Ratio
[entered value]
ENT
DEL
decimal entry
ENT
DEL
decimal entry
UP
DN
DEL
Slope
[entered value]
UP
DN
UP
DN
DEL
Power Predictor
[entered value]
UP
DN
DEL
Module Params
to select
DEL
Factory Param (1-5)
[entered value]
ENT
DEL
Heater Calib
Factory configuration only.
UP
DN
DEL
NSPValue
[entered value]
UP
DN
DEL
Previous Menu
to select
ENT
DEL
decimal entry
If the password timer has
expired, [entered value]
will display the encrypted
value of the password.
TA2 User Interface
Factory Configuration Menu
UP
DN
Configuration Parameter
Explanation
Probe Params
Provides the probe calibration parameters—see separate section 2.5.16.
Cal Parameters A
Provides the calibration parameters for Gas A—see separate section 2.5.17.
Cal Parameters B
Provides the calibration parameters for Gas B (if specified) —
see separate section 2.5.17.
Control Parameters
Factory set parameters which should only be changed under direction of MAGNETROL
Module Params
Module Parameters—Factory set parameters
36
54-631 THERMATEL Model TA2 Transmitter
2.5.15 Probe Parameters
These parameters are specific characteristics defining the operation of the probe.
UP
DN
Probe Params
to select
Sensor Type
[selection]
ENT
DEL
ENT
DEL
TXR
TXS
TXU
TFT
Spare 1
Spare 2
Spare 3
ENT
DEL
decimal entry
ENT
DEL
decimal entry
UP
DN
To
[entered value]
DEL
UP
DN
Fo
[entered value]
DEL
UP
DN
UP
DN
Probe Temp Calib
[OK/Bad/Calib
Required]
DEL
ENT
DEL
UP
DN
UP
DN
DEL
Previous Menu
to select
Temp Stabilizing
[lo temp ADC cnt] Temp
DEL
DEL
ENT
Enter Probe Temp
[temp reading]
ENT
DEL
Temp Stabilizing
[lo temp ADC cnt] Flow
UP
DN
decimal entry
TA2 User Interface
Factory Configuration Menu
Probe Parameters
Configuration Parameter
Explanation
Sensor Type
Selects the type of sensor used with the TA2. Various sensors have different
methods of calculating the flow rate.
To
Calibration parameter determined when calibrating the RTDs.
Fo
Calibration parameter determined when calibrating the RTDs.
Probe Temp Calib
Used during calibration of the RTDs. See section 4.3.
54-631 THERMATEL Model TA2 Transmitter
37
2.5.16 Calibration Parameters
There are two separate menus for Calibration Parameters titled Cal Parameters A and Cal Parameters B.
These two different sets of Calibration Parameters are used when the TA2 is calibrated on two gases
or for two different ranges. If the unit is calibrated for air, then only Calibration Parameter A is used.
If the TA2 is calibrated for a different gas, then the calibration parameters for the specified gas is contained
in Cal Parameters A, and the air calibration parameters are contained in Calibration Parameters B.
There is an identical menu structure for Cal Parameters B.
Cal Parameters A
to select
ENT
DEL
Calib Table A
nn Points
ENT
DEL
Table A Pt nn Pwr
[entered value]
UP
DN
ENT
Table A Pt nn Vel
[entered value]
UP
DN
DEL
Gas Parameters
to select
[inc/dec pt #]
ENT
DEL
ENT
DEL
see page 39
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry
UP
DN
UP
DN
DEL
Set Point
[entered value]
UP
DN
DEL
Zero Flow Signal
[entered value]
UP
DN
DEL
Low Flow Cutoff
[entered value]
UP
DN
DEL
Calib Pipe Area
to select
UP
DN
DEL
Previous Menu
to select
TA2 User Interface
Factory Configuration Menu
Cal Parameters A /B
UP
DN
Configuration Parameter
Explanation
Calib Table A
nn Points
Provides actual calibration data points obtained during the calibration.
Gas Parameters
See section 2.5.17.
Set Point
Indicates the temperature difference which the TA2 is attempting to maintain.
This parameter should only be changed under direction of MAGNETROL.
Zero Flow Signal
Used to adjust the zero flow data point, if necessary, for application-specific related issues.
See Troubleshooting Section 3.4.
Low Flow Cutoff
The TA2 will ignore flow rates below this value. This can be changed for application-specific
issues. See Troubleshooting Section 3.4.
Calibration Pipe Area
See Recalibration section 4.4.
38
54-631 THERMATEL Model TA2 Transmitter
2.5.17 Gas Parameters
Contains specific information on the gas which are used in the TA2 calculations.
UP
DN
Gas Parameters
to select
ENT
DEL
Temp Corr TCC-A
[entered value]
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry in
chosen units
UP
DN
DEL
Temp Corr TCC-B
[entered value]
UP
DN
DEL
Temp Corr TCC-C
[entered value]
UP
DN
DEL
Gas Density
[entered value]
UP
DN
DEL
Air Equivalency
to select
ENT
DEL
see page 40
UP
DN
DEL
Previous Menu
to select
UP
DN
TA2 User Interface
Factory Configuration Menu
Gas Parameters menu exists for both Gas A and Gas B
Configuration Parameter
Explanation
TCC-A, TCC-B TCC-C
Gas-specific factors used for temperature compensation. This parameter should
only be changed under direction of MAGNETROL.
Gas Density
Provides the density of the gas at the specified STP (Standard Temperature
and Pressure) conditions.
Air Equivalency
Contains factors which relate the relationship of the gas flow to the flow of air.
Contact MAGNETROL for factors specific to different gases.
54-631 THERMATEL Model TA2 Transmitter
39
2.5.18 Air Equivalency Calibration
The Air Equivalency calibrations permits the use of an air calibration and then, using the MAGNETROL
historic data base, relate the flow of air to the flow of gas. The equations use a polynomial curve fit.
A fault will occur if the curve fit becomes non-monotonic (signal decreases with increasing flow) which can
occur if operating outside the data range. Consult MAGNETROL regarding proper sizing with
Air Equivalency calibrations. The user may contact MAGNETROL to obtain air equivalency factors
for various gases. These values should only be used when the TA2 was calibrated on air. If the calibration
data in the Calibration Table is for a different gas, the results are invalid.
Configuration Parameter
Explanation
Enable/Disable
Enables or Disables the Air Equivalency calculations
Ag - Eg
Factors in a Polynomial equation in the form of A + Bv + Cv2 + Dv3 + Ev4
where v is the mass velocity. Contact MAGNETROL for factors
UP
DN
Air Equivalency
to select
ENT
DEL
Air Equiv Mode
[selection]
ENT
DEL
Disabled
Enabled
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
decimal entry
UP
DN
DEL
Gas Coeff Ag
[entered value]
UP
DN
DEL
Gas Coeff Bg
[entered value]
UP
DN
DEL
Gas Coeff Cg
[entered value]
UP
DN
DEL
Gas Coeff Dg
[entered value]
UP
DN
DEL
Gas Coeff Eg
[entered value]
UP
DN
DEL
Previous Menu
to select
UP
DN
TA2 User Interface
Factory Configuration Menu
Air Equivalency
Air Equivalency menu exists for both Gas A and Gas B
40
54-631 THERMATEL Model TA2 Transmitter
2.6
AC
INPUT
100-264 VAC
50/
60Hz
DC INPUT
+
-
Active or Passive
connections
TB3
When connected to the control loop, the same system
measurement readings shown on the transmitter are
displayed on the communicator. The communicator can
also be used to configure the transmitter.
PULSE/
ALARM
LOOP1/HART
OUTPUT
P-
A HART ® (Highway Addressable Remote Transducer)
remote unit, such as a HART communicator, can be used
to provide a communication link to the TA2.
Analog Output 1
Output
DC Power input
(15 – 30 VDC)
TB2
AC Power input
(100 – 264 VAC)
TB1
AP+ A+
P-
AP+ A+
L1
L2
F2 TEST
TB2
TB3
P-
TB4
P+
R1
D6
To confirm HART handheld communications, attach the
unit as shown in figure 12. If the communicator reads
GENERIC on the first two lines, then the
HART handheld does not contain the current DDs
(Device Descriptions) for the TA2 transmitter.
Contact your local HART Service Center.
POWER
LOOP2
TB1
F1
TEST
F1
Configuration Using HART ®
OUTPUT
TB5
Junction
2.6.1 Connection
R L > 250 Ω
Control
Room
Display
Power
Supply
Current
Meter
Figure 12
-
+
The TA2 can be used with a HART remote unit to provide
communication of the process variables. The communicator
can also be used for configuration of the transmitter.
The dynamic variables which can be transmitted over
HART are Flow, Mass, Temperature, and Totalized Flow.
The Primary Variable is Flow or Mass.
Virtually all configuration and diagnostics available via the
user interface with the keypad and display are accessible
via HART. See System Configuration Menu, Section 2.6.3.
A HART device can be connected to either the active or
passive 4-20 mA output loop from AO1.
2.6.2 HART Revision Table
HART Version
HCF Release Date Compatible with TA2 Software
Dev V2 DD V1
February 2016
Version 2.1b0 and later
2.6.3 HART Display Menu
When connected, the top line of each menu displays the
model (TA2) and its tag number or address.
Open the TA2 online menu tree by pressing alphanumeric
key 1 to enter the Device Setup menu.
54-631 THERMATEL Model TA2 Transmitter
41
2.6.3 HART Menu
1
2
3
4
5
6
7
8
9
Device Setup
Diagnostics ¿
PV
PV Loop
PV % Range
SV
SV Loop
SV % Range
Process Variables
1 Basic
Configuration
1
2
3
4
5
6
7
1 System Units
2 Flow Area
Flow Units
Mass Units
Temperature Units
Density Units
Totalizer Units
Diameter Units
Area Units
1 Pipe ID
(flow body ID if TFT)
2 Flow Area
1 AO1 Loop Config
1 Flow
2 Mass
3 Process
Temperature
4 R Totalizer
5 R Totalizer Time
6 NR Totalizer
7 NR Totalizer Time
8 Custom Unit
2 I/O
Configuration
2 AO2 Loop Config
1 SV is
2 AO2 Lwr Range Val
3 AO2 Upr Range Val
3 Variable Mapping
1
2
3
4
PV is
AO1 Lwr Range Val
AO1 Upr Range Val
Fault State
1 TV is
2 QV is
1
2
3
4
5
6
7
8
9
4 Totalizers
5 Transistor Output
6 Damping
7 Poll Address
1 Pulse Output
2 Alarm
3 Disable
1 Output Function
2 Pulse Output Config
3 Alarm Config
1 Pulse Units
2 Pulse Multiplier
3 Pulse Max Freq
1 Alarm Setpoint
2 Alarm
Operation
3 Advanced
Configuration
1
2
3
4
5
6
7
8
Install Factors
Gas Cal Table
Auto Switching
STP Conditions
Custom Unit
New User Password
D/A Trim AO1
D/A Trim AO2
Totalizer Units
R Totalizer Mode
R Totalizer Mult
R Totalizer
R Totalizer Time
Reset Totalizer
NR Totalizer Mult
NR Totalizer
NR Totalizer Time
1 Low Flow
2 High Flow
1A
2B
3C
1 Table A
2 Table B
4 Device Information
1 Disabled
2 Enabled
5 Factory
Configuration
1 STP Temperature
2 STP Pressure
6 Review
¿ See page 45.
42
1 Custom Unit Text
2 Custom Unit Mult
54-631 THERMATEL Model TA2 Transmitter
2.6.3 HART Menu (cont.)
1
2
3
4
5
6
7
8
9
Device Setup
Diagnostics
PV
PV Loop
PV % Range
SV
SV Loop
SV % Range
Process Variables
1
2
3
4
5
6
7
1 Basic
Configuration
2 I/O
Configuration
3 Advanced
Configuration
1
2
3
4
5
6
7
8
9
10
11
12
13
14
4 Device Information
5 Factory
Configuration
1
2
3
4
5
6
7
Local Tag
Descriptor
HART Tag
Poll Address
Date
Message
Date/Time/Initials
Manufacturer
Model Number
Specific Model
Firmware Version
MAGNETROL S/N
Device ID
Final asmbly num
Enter Password
Probe Parameters
Control Parameters
Module Parameters
NSP Value
Cal Parameters A
Cal Parameters B
1
2
3
4
5
Sensor Type
To
Fo
RTD Calibration
Calibrate RTDs
1
2
3
4
5
6
7
8
Coeff Ratio
Slope
Power Predictor
Factory Parameter
Factory Parameter
Factory Parameter
Factory Parameter
Factory Parameter
TXR
TXS
TXU
TFT
Spare 1
Spare 2
Spare 3
1
2
3
4
5
1 Heater Calibration
2 Calibrate Heater
1
2
3
4
5
6
Cal Table A
Gas Parameters
Set Point
Zero Flow Signal
Low Flow Cutoff
Cal Pipe Area
1
2
3
4
5
TCC-A
TCC-B
TCC-C
Gas Density
Air Equivalency
6 Review
1
2
3
4
5
6
Cal Table B
Gas Parameters
Set Point
Zero Flow Signal
Low Flow Cutoff
Cal Pipe Area
1
2
3
4
5
6
54-631 THERMATEL Model TA2 Transmitter
Enable/Disable
Ag
Bg
Cg
Dg
Eg
1
2
3
4
5
TCC-A
TCC-B
TCC-C
Gas Density
Air Equivalency
1
2
3
4
5
6
Enable/Disable
Ag
Bg
Cg
Dg
Eg
43
2.6.3 HART Menu (cont.)
1
2
3
4
5
6
7
8
9
Device Setup
Diagnostics
PV
PV Loop
PV % Range
SV
SV Loop
SV % Range
Process Variables
1 Basic
Configuration
2 I/O
Configuration
3 Advanced
Configuration
4 Device
Information
5 Factory
Configuration
6 Review
44
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Model
Manufacturer
MAGNETROL S/N
HART Tag
Descriptor
Firmware Version
Date
Message
Final asmbly num
Device ID
Poll Address
Date/Time/Initials
Universal rev
Fld Dev rev
Software rev
Num req preams
PV is
SV is
TV is
QV is
Pipe ID
Flow Area
AO1 Lwr Range
Value
24 AO1 Upr Range
Value
25 Fault State
26 Damping
27 AO2 Lwr Range
Value
28 AO2 Upr Range
Value
29 R Totalizer Mode
30 R Totalizer Mult
31 NR Totalizer Mult
32 Output Function
33 Pulse Units
34 Pulse Multiplier
35 Pulse Max Freq
36 Alarm Setpoint
37 Alarm Operation
38 Install Factor A
39 Install Factor B
40 Install Factor C
41 Gas Cal Table
42 STP Temperature
43 STP Pressure
44 Custom Unit Text
45 Custom Unit
Multiplier
46 AO1 4mA Trim value
47 AO1 20mA Trim value
48 AO2 4mA Trim value
49 AO2 20mA Trim value
54-631 THERMATEL Model TA2 Transmitter
2.6.3 Diagnostics Menu
1
2
3
4
5
6
7
8
9
Device Setup
Diagnostics
AO1
AO1 Loop
AO1 % Range
AO2
AO2 Loop
AO2 % Range
Process Variables
1 Present Status
2 History
PV Out of limits
Non-PV Out of limits
Loop Current Saturated
Loop Current Fixed
More status available
Cold start
Configuration changed
Device malfunction
1
2
3
4
5
Device Status
Reset Config chgd
Faults
Warnings
Informational
1 View History
2 Reset History
1
2
3
4
3 Extended Diagnostics
4 Trend Chart
1
2
3
4
5
6
7
8
9
10
11
PV
Signal
Exit Fixed Signal
Fixed Signal Value
Signal/PV
Delta T
Heater Setting
Process Temperature
Elect Temperature
Zero Power Test
Low Cal Validation
High Cal Validation
AO1 Loop Test
AO2 Loop Test
Test Pulse
Default Params
Fault 1
No Probe Signals
Temp Snsr Shorted
Temp Snsr Open
Flow Snsr Shorted
Flow Snsr Open
RTDs Reversed
Heater Shorted
Heater Open
ZFS Too High
Too Few Cal Pts
Air Equiv Coeff
User Coeff
Module Failure
Vel > UprSnsr Lmt
Initializing
AO2 Loop Fixed
In Test Mode
Vel > Upr Cal Pt
Vel < Low Flow Lmt
RTD Drive Current
Dflt Totalizer
Pulse Mult Error
Warning 2
AO1 Loop Trim Reqd
AO2 Loop Trim Reqd
Process Temp High
Check Install Factors
Elec Temp Hi
Elec Temp Lo
Warning 1
AO2 Loop Fixed
AO2 Loop Saturated
Set Pt > UprCalPt
Range Too Small
System code
1
2
3
4
54-631 THERMATEL Model TA2 Transmitter
Current Temperature
Max Temperature
Min Temperature
Reset Temperatures
1 Current Temperature
2 Max Temperature
3 Reset Temperatures
45
3.0
Reference Information
3.1
Description
The THERMATEL Model TA2 Thermal Mass Flow
Meter provides a mass flow measurement of air and other
gases. The TA2 consists of a probe or flow body with electronics either integrally mounted on the probe or remotely
located.
The electronics are rated for use in explosion proof service.
The unit will accept 15 to 30 VDC power or 100 to
264 VAC input power. Output from the TA2 is a 420 mA signal of the mass flow rate. An optional version also
provides a second mA signal which can represent the temperature or flow, and a pulse output.
The optional plug-in display module with four-button
keypad permits the user to easily make changes in the
configuration of the TA2 for application-specific conditions.
The display provides an indication of the mass flow,
temperature and totalized flow, plus other selectable
information.
Each instrument is calibrated and configured by
MAGNETROL for the type of gas, pipe size, flow area
and flow rate. Calibration is performed in a NIST traceable flow bench.
The TA2 provides real-time temperature compensation
which adjusts the flow measurement due to changing gas
properties caused by process temperature changes.
3.2
Theory of Operation
The flow element of the TA2 Thermal Mass Flow Meter
utilizes a heater and two resistance temperature detectors
(RTDs). The heater and the active RTD are contained in
one sensor. The second sensor contains the reference RTD
and a mass balancing element.
The reference RTD measures the temperature of the
process where the flow element is installed. A variable
power is provided to the heater. The active RTD measures
the temperature of the heated sensor in a feedback loop to
the electronics. The electronics vary the power to the
heater to maintain a constant temperature difference
between the active and reference RTDs. As the mass flow
rate increases there is a cooling effect on the heated sensor.
The power to the heated sensor is controlled to maintain a
constant temperature difference between the two sensors.
The amount of power required to maintain this temperature
difference provides a measurement of the mass flow.
46
54-631 THERMATEL Model TA2 Transmitter
There is an inherent non-linear relationship between
heater power and the mass flow rate. The microprocessor
based electronics convert the heater power to provide a
linear measurement of the mass flow rate. The electronics
also provide real time temperature compensation which
automatically adjusts the flow measurement for changes
in process temperature over the entire operating range of
the instrument.
The 4-20 mA output signal can be adjusted to provide
maximum resolution of flow measurement over the calibration range of the instrument. The 4-20 mA signal can
be wired for either active or passive operation.
The temperature measured by the reference RTD and the
totalized flow can be viewed on the display, and is also
available over HART communication. An optional version
of the TA2 has a mA output of the temperature and also a
pulse output that can be used for an external
counter/totalizer or for an alarm indication.
3.3
Display Module
The Enhanced model TA2 has a back-lit, plug-in, rotatable
display module. The display module consists of a 2-line ¥
16-character Liquid Crystal Display with four-push-button
keypad for configuring the instrument, or for diagnostics.
The display can be rotated in 90-degree increments to permit viewing from various orientations. To rotate the display, remove the two screws on the front of the display
module, rotate to the desired position, and reattach.
3.4
Troubleshooting
The TA2 Thermal Mass Flow Meter is designed for ease of
use and trouble-free operation. The TA2 is shipped precalibrated and pre-configured based on information
provided at time of order. The following lists possible
problems and solutions to investigate.
WARNING! Explosion hazard. Do not remove the TA2 housing
cover unless power has been switched off or the
area is known to be non-hazardous. Use of the
PACTware™ PC program is highly recommended
and invaluable for troubleshooting and advanced
configuration. A HART RS232 or USB model
(purchased separately) is required.
See MAGNETROL PACTware™ bulletin 59-101.
54-631 THERMATEL Model TA2 Transmitter
47
3.4
Troubleshooting
Symptom
Problem
Solution
No Output signal
No Display
No input power
Verify that LED D6 on the input wiring board
is on. If not, check wiring connections.
Check F1 test and F2 test to check fuses
protecting input wiring. See Figure 8.
No Output signal
4–20 mA output
not operational
Verify that 4–20 mA connections are
made to the correct terminals on TB3.
See section 1.2.
Flow Measurement on display
is correct but Output signal
always 4 mA
HART Poll Address
is not 0
Change HART Poll Address to 0.
See section 2.5.12.
Totalizer not operating
Totalizer is Disabled
Ensure that the totalizer operation
is enabled. See section 2.5.9.
Flow is measured under a
no flow condition
Increased heat transfer.
This can occur under
no flow with increased
pressure.
Increase the low flow cutoff to a value
greater than the displayed flow rate.
The TA2 will ignore readings lower than
this value. Optionally, increase the zero
flow signal to match the value indicated
under Signal Value. See section 2.5.16.
Instrument configuration
does not match actual
application
Check values entered for Flow Area under
Basic Configuration. Check if Install Factors
are entered under Advanced Configuration.
Check STP conditions under Advanced
Configuration.
Buildup on sensor
Depending on type and size of buildup,
flow readings may either increase or
decrease. Clean sensor.
Flow Rate too high
Flow Profile
Considerations
The TA2 assumes a specific fully developed flow profile. User can correct for variations in flow profile using the Install
Factors found under Advanced
Configuration section 2.5.11.
Flow Rate too high,
output spiking
Moisture in the Gas
Condensed moisture will cool the sensor
more than gas flow. This will temporarily
indicate a higher than expected flow rate.
Flow Rate too high or too low
48
54-631 THERMATEL Model TA2 Transmitter
3.4.1 Error Messages
The TA2 Mass Flow Meter utilizes a 3-level hierarchy for
reporting diagnostics information: FAULTS, WARNINGS,
and INFORMATION. Faults and Warnings can be reviewed
on the rotating screen in the Home menu. These screens
capture only current conditions. Historic diagnostic information can be viewed in the HISTORY screen of the
Diagnostics Menu.
FAULT: The highest level in the hierarchy of diagnostics.
A Fault indicates a defect or failure in the circuitry or software, or a calibration condition that makes reliable measurement impossible. The mA value defaults to 3.6 mA,
22 mA, or HOLD and a message is displayed on the rotating screen. Further error information can be obtained by
reviewing the Diagnostic Menu screen.
WARNING: This is the second level in the hierarchy of
diagnostics. A Warning indicates conditions that are not
fatal but may affect the measurement. A message will
appear on the Home (rotating) screen when a Warning is
detected but will not affect the output current. Further
error information can be obtained by reviewing the
Diagnostic Menu screens.
INFORMATION: This is the lowest level in the hierarchy
of diagnostics. Information messages are for conditions
that provide operational factors that are not critical to the
measurement. Further error information can be obtained
by reviewing the Diagnostics Menu.
54-631 THERMATEL Model TA2 Transmitter
49
3.4.1.1 Fault Messages
Diagnostic
Fault Description/Corrective Action
LCD Message
Non-Volatile
Memory corruption
Partial corruption of the Non-Volatile memory stored in
the EEPROM. Data may revert to Default conditions.
Re-verify that all calibration and configuration factors in
the TA2 match the calibration certificate.
Default Params
No signal from Probe
There is no signal from the sensor. Check the wiring
between the probe and the electronics.
No Probe Signals
Temperature Sensor
Failure
A short has occured in the RTD measuring the process
temperature or in the interconnecting wiring (if remote
electronics). Check wiring to the probe.
TempSnsr Shorted
Temperature Sensor
Failure
There is an open circuit in the RTD measuring the
process temperature or in the interconnecting wiring
(if remote electronics). Check wiring to the probe.
Temp Sensor Open
Flow Sensor Failure
A short has occured in the RTD measuring the
heated sensor or in the interconnecting wiring
(if remote electronics). Check wiring to the probe.
FlowSnsr Shorted
Flow Sensor Failure
There is an open circuit in the RTDs measuring the
heated sensor or in the interconnecting wiring
(if remote electronics). Check wiring to the probe.
Flow Sensor Open
RTDs Reversed
The wiring connecting the RTDs is reversed.
Check probe wiring or interconnecting cable
(if remote electronics)
RTDs Reversed
Heater Shorted
The heater has developed a short either in the probe or
in the interconnecting cable (if remote electronics).
Check probe wiring.
Heater Shorted
Heater Open
There is an open circuit in the wiring going to the heater.
Check wiring. Also, check if the two-pin jumper is missing.
See section 3.5.1.
Heater Open
Zero Flow Signal
is too high
Zero Flow Signal (power) is greater than second data
point in the Calibration Table. Check value entered
under Factory Config/Cal Parameters/Zero Flow Signal.
ZFS Too High
Too Few
Calibration Points
The calibration table does not contain sufficient number
of data points for the flow range. Minimum of ten points
is required.
Too Few Cal Pts
Air Equivalency
Coefficients incorrect
The Air Equivalency factors used result in a nonmonotonically increasing curve over the operating range.
Check factors.
Air Equiv Coeffs Bad
Install Factors
incorrect
Install factors entered under Advanced Configuration
result in a non-monotonically increasing curve.
Check factors.
User Instl Coeffs Bad
Module Failure
No readings received from the ADCs, or the values out
of range. Indicates failure of Analog to Digital converters.
Requires replacement of processor board or return of
unit to factory.
Module Failure
Velocity is greater than
the Upper Sensor Limit
The velocity is greater than established values.
Contact MAGNETROL.
Vel > UprSnsrLmt
50
54-631 THERMATEL Model TA2 Transmitter
3.4.1.2 Warning Messages
Diagnostic
Warning Description
LCD Message
Initializing
Initialization in progress. The TA2 will begin making flow
readings at completion of cycle.
Initializing
AO2 Loop
current fixed
The second 4–20 mA loop (AO2) is not responding. The mA
signal may be saturated at 20.5 mA or may be fixed and
non-responsive. Check informational messages.
AO2 Loop Fixed
TA2 is running
diagnostics test
The operator has put the TA2 into one of several diagnostics
tests. The mA output is 4 mA.
In Test Mode
Velocity too high
The Flow rate exceeds the calibration range of the instrument.
Instrument will continue to operate. Accuracy is uncertain;
flow measurements will be repeatable.
Vel > Upr Cal Pt
RTD drift
The RTD drive circuit current has drifted since last calibration.
The drift is outside expected range. The TA2 has compensated
for the drift, continued drift may affect accuracy. Repeatability
will remain.
RTD Drive Ckt
Totalizer Error
There is an error in the Totalizer operation—the Totalizer and
Elapsed Time indicator are reset to 0.
Dflt Totalizer
Pulse Multiplier Error
The maximum pulse output exceeds the maximum frequency
selected. Increase the Pulse Multiplier.
Pulse Mult Error
Current loop(s)
require trimming
The D/A Trim values are factory defaults. Perform D/A Trim of
AO1 or AO2 under Advanced Configuration menu.
Temperature Limit
Exceeded
The temperature measured by the sensor exceeds the rated
temperature. Continued operation will damage sensor.
Process Temp Hi
Install Factor Error
Check and recalculate the install factors. This message may
occur if the units of measurement were changed after install
factors were entered.
Check Inst Factors
Electronic Temperature
Exceeded
The temperature of the microprocessor board is above +176° F
(+80° C) or below –40° F (–40° C)
AO1 Loop Trim Reqd
AO2 Loop Trim Reqd
Elec Temp Hi
Elec Temp Lo
3.4.1.3 Information Messages
Diagnostic
Information Description
LCD Message
AO2 Loop
not responding
The second 4–20 mA loop (AO2) is fixed and not responding.
Check mA output. This informational message will also be
activated if the second mA loop output is saturated at
20.5 mA. Check I/O Config/AO2 Loop Config/LRV and URV.
AO2 Loop Fixed
AO2 Loop Saturated
The second 4–20 mA loop (AO2) is saturated at 20.5 mA.
Check I/O Config/AO2 Loop Config/URV.
AO2 Loop Saturated
Upper Range
Value Error
The Upper Range Value is greater than the Upper
Calibration Point.
SetPt > UprCalPt
Insufficient Span
The URV (Upper Range Value) is too close to the LRV
(Lower Range Value). Increase separation.
SetPts Too Close
System Warning
Non-fatal firmware exception. Advise MAGNETROL with system
code number.
System Code
54-631 THERMATEL Model TA2 Transmitter
51
3.5
Diagnostics Test
The TA2 has several diagnostics tests which may be routinely performed. When conducting these tests, the reported
flow rate will be zero.
TA2 Processor Board
The amount of current flowing to the heater is displayed
under Diagnostics/Heater Setting. This value can be verified by connecting a multi-meter across the Heater Bypass
terminals (J2) shown in figure 13. This board can be
accessed by opening the cover and removing the display
module. See Figure 13.
1
Display
J1 (2 x 7 Pin)
The measured value should match the value shown on the
display. Any difference between the two values indicates
that the heater calibration is incorrect. If the heater circuit
is open, a nominal current value will be displayed, but the
measured current will be zero.
1
2
3.5.1 Heater Setting
1
3.5.2 Zero Power Test
Heater Test
J2 (2-Pin)
Figure 13
This test checks that the resistances of the RTDs have not
changed. The heater is turned off and the temperature difference between the two sensors is compared. The test
should be performed in a water bath (preferred) or under
flowing conditions. Conducting this test in still air will
cause the test to time out and provide inconclusive results.
The temperature difference between the two sensors is displayed. Typical values will match within 0.15° C.
Temperature difference may be as high as 0.5° C depending upon test conditions. If greater than this value, contact
the factory as drift in the RTDs may have occurred.
3.5.3 Calibration Verification Procedure
The TA2 measures heat transfer. These procedures are
designed to permit the user to verify the calibration by
checking the heat transfer characteristics of the sensor. If
the heat transfer characteristics are approximately the same
when the test is conducted compared with when the same
data was collected at the factory during the initial calibration,
the unit remains in calibration.
Watch the video for this procedure at
www.magnetrol.com/thermalmassflow.
52
54-631 Thermatel® Model TA2 Transmitter
The procedure is performed under two different sets of
conditions. Both tests should be conducted at “room
temperature”; approximately +70° to +85° F (+21° to +30° C).
The tests can be performed using the keypad and display,
HART, or PACTware ™ through the Diagnostics Menu.
During the test, the display (or HART or PACTware ™ )
will provide an indication of the measured temperature
difference and if the Delta T measurement is stable.
Low Flow Validate—Simulates a low flow condition.
i. Cover sensor tips to isolate from air currents. During
the test, the heater power is set and the Delta T
(temperature difference) between the two RTDs is
measured.
ii. After completion of the test, the value of the temperature difference measured during the test is compared
against the previously stored value. (This value can
also be compared with the initial calibration found
on the original calibration certificate.)
iii. The value from the test should compare with the
stored (or original calibration value) within 1.5° C.
This variation in part due to potential variations of
the ambient temperature during the test and differences in test methods.
Figure 14
High Flow Validate—Simulates a high flow condition.
i. Support the TA2 vertically in a water bath. See
Figure 14. During the test, the heater power is set
and the Delta T (temperature difference) between
the two RTDs is measured.
ii. After completion of the test, the value of the temperature difference measured during the test is compared
against the stored value. (This value can also be compared with the initial calibration found on the original
calibration certificate.)
iii. The value from the test should compare with the
stored (or original calibration value) within 1.5° C
This variation in part due to potential variations of
the ambient temperature during the test and differences in test methods.
If the temperature difference measured during the test is
greater than the recommended temperature difference
indicated above in item “iii”, then the overall accuracy of the
TA2 may be affected. Contact MAGNETROL Technical
support.
54-631 THERMATEL Model TA2 Transmitter
53
4.0
Maintenance
4.1
Circuit Board Replacement
1.
2.
Front
Compartment
Rear
Compartment
3.
4.
Figure 15
The input wiring board and display module can be
replaced without any effect on the performance and operation of the TA2. The processor board contains the calibration information and is matched with the probe. If this
circuit board is replaced, re-entry of all the original calibration and configuration information is required. This information is contained on the calibration certificate which
can be supplied by MAGNETROL. Use of PACTware ™
is recommended for re-entry of this data.
Make sure the power source is turned off.
The input wiring board is contained in the rear compartment where the input voltage wiring comes into. The display module, power loop board and processor board are
contained in the front compartment.
Remove cover—refer to Figure 15.
If removing boards in the front compartment:
a. Remove and unplug the display module if provided.
b. Remove the two hex head fasteners using a 1⁄4" socket.
This will remove the electronics module containing
the processor board and the power loop board.
c. Unplug the electrical connection at J1 of the
power loop board.
d. Probe wiring connections are made to TB1 on the
same side of the power loop circuit board.
Integral Electronics
Wire Color
Orange
Brown
Black
Blue
White
Connection on TB1
8
7
3
2
1
e. Connect the probe wires as indicated:
Remote Electronics —see Figure 10 on Page 11.
f. Reattach the electrical connection to J1.
g. Reassemble the circuit boards in the enclosure.
Make sure that the probe wiring does not get
pinched between the standoffs on the circuit board
and the attachment lugs in the housing.
h. Reinstall the display module if provided.
5. If replacing the input wiring board, loosen screws, and remove
the electrical connection to J1 on the rear of the circuit board.
i. Attach electrical connections to J1 on new circuit
board and reassemble.
6. Reinstall the cover.
54
54-631 THERMATEL Model TA2 Transmitter
7. Apply power to the instrument.
8. Proceed to section 4.3
4.2
Probe Replacement
The probe and processor board are calibrated together to
form a matched set. If a probe needs to be replaced,
MAGNETROL will provide a new calibration certificate.
The user will be required to re-enter the data from this certificate into the instrument. Use of PACTware™ is recommended for re-entry of this data. A new serial number will
be designated to the replacement probe.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
1.
2.
3.
4.
5.
Integral Electronics
Make sure the power source is off.
Access the power loop circuit board following procedure in
section 4.1.1
Disconnect wiring to the probe.
Loosen the two set screws at the base of the housing. One
serves as a rotational lock, the other secures the head into place.
Unthread the probe.
Thread in a new probe.
Connect the probe wires to the power loop board as indicated in section 4.1.4., step “e”
Reassemble the electronics following 4.1.1
Align the enclosure with the desired probe position, making sure that the flow arrow indicates the direction of flow.
Retighten the two set screws.
Reapply power.
Proceed to section 4.3
Remote Electronics
Make sure the power source is off.
Remove cover of remote electronics housing.
Remove bezel.
Disconnect the wires from the probe at terminal TB1.
Loosen the two set screws at the base of the housing. One
serves as a rotational lock, the other secures the head into place.
Wire Color
White
1
Blue
2
Black
3
Brown
4
Orange
5
6.
7.
8.
9.
54-631 THERMATEL Model TA2 Transmitter
Terminal Connection on TB1
Unthread the probe.
Thread in a new probe.
Connect the probe wires to Terminal TB1 as shown in fig. 10.
Retighten the two set screws.
55
10. Reassemble the bezel and install cover.
11. Reapply power.
12. Proceed to section 4.3
4.3 Replacement Calibration
4.3.1 RTD Calibration
If either the probe or the processor board is replaced in the
field, calibration of the RTDs in the probe will return the
TA2 to like-new performance.
NOTE: If this procedure is not followed, the accuracy will be affected;
however, very repeatable flow measurements will be obtained.
Locate the sensor vertically in a water bath with an accurate
temperature sensor directly adjacent to the probe tips. It is
preferable that the water is stirred during the calibration to
ensure the TA2 pins and temperature probe are at the
same temperature. Using the keypad and display, select
“Factory Config\Probe Params\Probe Temp Calib” and
then press the Enter key. The device will dynamically display the To/Fo readings over a period of time. After 3 minutes, and if the readings are stable enough, the display
automatically changes to request entry of a password (126)
followed by the ambient water temperature. After the temperature is entered, the device will display if the calibration
is OK. The device then automatically resets itself for normal operation. A similar procedure exists for the DD and
DTM.
4.3.2 Set Point Adjustment
A new set point must be calculated to complete the reconfiguration.
1. Place the probe in ambient temperature air where there is
no flow across the sensor. This can be accomplished by
wrapping the sensor tip with a piece of paper.
2. Go into Diagnostics ’ Signal. Allow time for the signal
to stabilize to within ±1 mW and record the new signal.
3. Calculate a new set point by using the following formula:
New set point = set point x (zero flow signal ÷ new signal)
If replacing the probe, use the set point and zero flow signal (ZFS) shown on the new calibration certificate that
came with the probe.
If replacing the processor board, use the set point and ZFS
on the original calibration certificate. If the original calibration certificate is not available, contact MAGNETROL
with the serial number of the unit found on the nameplate.
New signal is the value measured under step 2.
56
54-631 THERMATEL Model TA2 Transmitter
NOTE: If the TA2 is calibrated for a gas other than air, there are two
ZFS values on the certificate. One is for air and the other is for
the particular gas. Use the ZFS for air when making the
adjustment in air.
4. Enter this new set point into the TA2 instead of the value
on the calibration certificate under Factory Config ’ Cal
Parameters A ’ Set Point.
5. Return to the signal screen, similar to step 2, ensuring
there is no flow over the sensor. The signal value should
now agree with the original ZFS within 1%. If desired,
steps 2 through 5 can be repeated.
4.4
Flow Recalibration
Calibration of the TA2 requires a flow bench or other method
for determining the flow rate. Using this procedure, the user
can re-calibrate the unit himself or use a local flow calibration
facility rather than returning the unit to the factory for
recalibration. With an insertion probe, it is not necessary to
calibrate in the same size pipe as the unit is installed in.
The TA2 has internal scale-up factors which adjusts the data
from the calibration pipe size to the installation pipe size.
Calibration requires the TA2 sensor to be positioned in a
test section; the test section should have a sufficient
upstream and downstream straight run to ensure the formation of a fully developed flow profile. Calibration should be
performed using the same gas which the unit is calibrated
for. Optionally, an air equivalency calibration can be performed. In this case, calibrate in air and contact the factory
for air equivalency factors and equivalent air calibration rate.
Recalibration Procedure:
1. Select the set point; this is the temperature in degrees
Celsius which the TA2 maintains between the two sensors.
If the unit is re-calibrated for the same application, then it
is probably not necessary to change the original value. If it
becomes necessary to change the set point due to change
in the calibration velocity or the type of gas:
a. Record the set point under Factory Configuration/
Cal Parameters (A or B)/Set Point.
b. Determine the maximum velocity in SFPM which
the unit will operate (SFPM equals the SCFM divided
by the flow area of the test section in square feet).
c. Install the probe in the test section and flow gas that
is equivalent to the maximum velocity in the calibration
range.
d. Using the display, HART, or PACTware ™, obtain
the signal value in mW from the Diagnostics menu.
e. Calculate a new set point using the formula:
New set point = old set point * (800/measured signal (mW)). 800 mW is the desired maximum power
rating for the TA2.
54-631 THERMATEL Model TA2 Transmitter
57
f. Enter new /set point in TA2 under Factory
Configuration/Cal Parameters (A or B) Set Point.
2. Convert the flow rate in the application to the flow rate in
the test section using the formula:
Flow in test section = application flow * (flow area of test
section/flow area of application)
a. Allow a flow of a known amount of gas through the
test section, recording flow rate and TA2 signal
(mW).
A minimum of 10 and a maximum of 30 data points
including a zero flow value should be obtained. One
data point should be taken at a flow rate approximately 20% greater than the expected operating
range.
The higher the number of data points, the better the
overall accuracy of the instrument.
b. Convert the flow rate in the test section to mass
velocity in SFPM (Standard Feet Per Minute). This
is equivalent to the flow rate in SCFM divided by
the flow area in square feet. Convert from other units
of measurement as necessary. Use MAGNETROL
STP conditions of 70° F and 1 Atmosphere (14.69
psia).
c. Enter the Power and the corresponding Mass
Velocity into the TA2. This is easily performed using
PACTware ™ but can also be entered directly into
the TA2 using the display and keypad or using
HART. These values should be entered in increasing
order to ensure a monotonically increasing curve.
Note password of 126 is required for entry of calibration data. (Contact MAGNETROL if issues using
this
password.)
d. After completion of entry of the calibration data,
check the display/HART/PACTware ™ for the number of points accepted (or table length). If this number is less than the actual number of data points
entered, then there is an error in the entry of the calibration data. Ensure that the data is entered so the
curve is monotonically increasing. The values of mass
velocity and power should always be increasing over
the calibration range.
e. A Fault message will occur if there are fewer than 10
calibration data points in the calibration table.
3. Enter the flow area of the calibration test section. Units of
measurement are the same as selected under Basic Config
menu. This value is used in calculating the scale-up factor
between the calibration test section and the installation.
58
54-631 THERMATEL Model TA2 Transmitter
4.5
Agency Approvals
AGENCY
APPROVED MODEL
PROTECTION METHOD
UNITED
STATES
& CANADA
TA2-AXXX-X3X
TA2-AXXX-X4X
with
TXR-XXXX-XXX (probe)
TFT-XXXX-000 (flow body)
Explosion Proof
Dust Ignition Proof
Non-Incendive
Suitable for
ATEX
AREA CLASSIFICATION
Class I, Div 1, Groups B, C, D
T6 Ta = -40° C to +70° C,
T5 Ta = -40° C to +80° C
Class II, III, Div 1, Groups E, F, G
T6 Ta = -40° C to +70° C,
T5 Ta = -40° C to +80° C
Class I, Div 2, Groups A, B, C, D
T4 Ta = -40° C to +80° C
Class II, Div 2, Groups E, F, G
Class III, Div 1
T4 Ta= -40° C to +80° C
Type 4X, IP 66
II 2 G Ex d IIC T6 Gb, Tamb -40° C to +55° C
TA2-AXXX-X3X
TA2-AXXX-X4X
with
TXR-XXXX-XXX (probe)
TFT-XXXX-000 (flow body)
Explosion proof
EN60079-0: 2009
EN60079-1: 2007
TA2-AXXX-XEX
TA2-AXXX-XFX
with
TXR-XXXX-XXX (probe)
TFT-XXXX-000 (flow body)
Ex d Explosion Proof
w/IS probe circuit
EN60079-0: 2009
EN60079-1: 2007
EN60079-11: 2007
EN60079-26 : 2007
IEC
TA2-AXXX-X3X
TA2-AXXX-X4X
with
TXR-XXXX-XXX (probe)
TFT-XXXX-000 (flow body)
Explosion Proof
IEC 60079-0: 2007-10
IEC 60079-1: 2007-04
EAC
TA2-AXXX-X3X
TA2-AXXX-X4X
Russian Authorization Standards Consult MAGNETROL for Details
BRAZIL
TA2-AXXX-X3X
TA2-AXXX-X4X
com
TXR-XXXX-XXX (probe)
INMETRO TÜV TFT-XXXX-000 (flow body)
Explosion proof
ABNT NBR IEC 60079-0:2008
ABNT NBR IEC 60079-1:2009
ABNT NBR IEC 60529:2005
Note: Maximum surface temperature is +4° C (+7.2° F) above
process temperature.
54-631 THERMATEL Model TA2 Transmitter
II 1/2 G Ex d+ib / d[ib] IIC T4/T3 Ga/Gb
T4 : Tamb -40° C to +40° C
T3 : Tamb -40° C to +70° C
Ex d IIC T6 Gb
when T amb= -40° C to +70° C and
T medium= -40° C to +55° C
Ex d IIc T6 Gb
IP66W
-40° C < Ta < +55° C
TÜV 11.0027 X
These units have been tested to EN 61326 and are
in compliance with the EMC Directive 2004/108/EC.
59
5
1
2
4
3
8
9
6
11
13
12
10
60
54-631 THERMATEL Model TA2 Transmitter
4.6
Replacement Parts
NOTE: Replacement of the processor circuit board or the probe
requires entry of calibration and configuration data from the
Calibration Certificate.
WARNING: EXPLOSION HAZARD
Substitution of components may impair suitability for
Class I, Division 2
EXPLOSION HAZARD
Do not disconnect equipment unless power has been
switched off, or the area is known to be non-hazardous
Item
1
2
Description
Power Loop Board
Processor Board
Part Number
HART Version
Z30-3612-001
Without HART
Z30-3612-002
HART, 2nd mA and Pulse
Z30-3612-003
ATEX Zone 0 HART Version
Z30-3612-004
ATEX Zone 0 Without HART
Z30-3612-005
ATEX Zone 0 HART, 2nd mA and Pulse
Z30-3612-006
GP, FM, FMc, ATEX, Exd
Z30-3611-001
ATEX Zone 0
Z30-3611-002
Electronics Module with Processor Board,
Power Loop Board with mounting hardware
See table below.
3
Display Module
Z30-3614-001
4
Input Wiring Board
Basic
089-7260-001
Full Feature *
089-7260-002
5
Enclosure O-ring
012-2201-240
6
Enclosure Base
004-9207-XXX
7
Short Enclosure Cover **
004-9197-007
8
Wiring Enclosure Cover
004-9206-010
9
Enclosure Cover with Window ***
036-4411-001
10
Remote Probe Housing Base
004-9212-XXX
11
Remote Probe Housing Cover
004-9193-002
12
Remote Probe Housing O-ring
012-2101-237
13
Remote PC Board
030-3616-001
14
Probe/Flow Body
See Probe/Flow Body
* Includes 2nd mA and pulse output
** Short enclosure cover used with units that do not include display
*** Enclosure cover with window is used with units that do include display
Electronic Module includes Processor Board and
the Power Loop Board with Mounting Hardware
GP/Explosion Proof, no HART
089-7261-001
GP/Explosion Proof, HART
089-7261-002
GP/Explosion Proof, HART, 2nd mA and Pulse Output
089-7261-003
Zone 0 (Ex d + ib), no HART
089-7261-004
Zone 0 (Ex d + ib), HART
089-7261-005
Zone 0 (Ex d + ib), HART, 2nd mA and Pulse Output
089-7261-006
54-631 THERMATEL Model TA2 Transmitter
61
4.7
Specifications
4.7.1 Performance
Flow range maximum
Accuracy flow
Accuracy temperature
Repeatability
Linearity
Turn down
Calibration
Span
Response time
Cable length
SIL
10–54,000 SFPM (0.05–275 Nm/s) air reference to standard conditions
Contact MAGNETROL for other gases
±1% of reading +0.5% of calibrated full scale
±2° F (1° C)
±0.5% of reading
Included in flow accuracy
100:1 typical (depending on calibrated flow range)
NIST traceable
Minimum 0 –100 SFPM
1 to 3 second time constant typical
500 feet (150 m); (see page 11 for cable specifications)
Safe Failure Fraction (SFF) 88.4%
4.7.2 Transmitter
Display
Keypad
Menu Language
Supply voltage
Power consumption
Signal Output
Analog output signal
Diagnostic Alarm
HART
Pulse Output
Alarm Output
Ambient temperature
Temperature effect
Humidity
Housing Material
Shock /Vibration
Active
Passive
Two-line alphanumeric LCD, 16-characters per line
Four push button
English, French, German, Spanish, Russian
100 –264 VAC, 50–60 Hz
15-30 VDC (lower VDC possible - Consult Factory)
DC = 9 W maximum,
AC = 20 VA maximum
4–20 mA, HART available (3.8 to 20.5 mA useable — meets NAMUR NE 43)
4–20 mA (isolated) maximum 1000 Ω loop resistance
4–20 mA (isolated) loop resistance dependent on power supply, 11– 36 VDC
3.6 mA, 22 mA, HOLD
Optional
Active Connection — 24 VDC (±10%) Power, 150 mA
Passive Connection — 2.5 to 60 VDC Power, 1.5 AMP
Active Connection — 24 VDC (±10%) Power, 100 mA
Passive Connection — 2.5 to 60 VDC Power, 1 AMP
-40° to +176° F (-40° to +80° C); display not readable below -22° F (-30° C)
Approximately ±0.04% of reading per ° C
99% Non-condensing
Aluminum A356 (<0.2% copper)
ANSI/ISA-S71.03 table 2, level SA1 (Shock), ANSI/ISA-S71.03 table 1, level VC2 (Vibration)
4.7.3 Probe
Materials
Process connections
Pressure rating
Temperature rating
316/316L stainless steel all welded
Hastelloy® C-276/C-22
Refer to model number, hot tap optional
1500 psig @ +70° F (103 bar @ +20° C), 1375 psig @ +400° F (95 bar @ +200° C)
-50° to +400° F (-45° to +200° C) ¿
4.7.4 Flow Body
Materials
316/316L stainless steel all welded
Carbon steel with stainless steel sensor
NPT or 150 pound flange – Refer to model number
1500 psig @ +70° F (103 bar @ +20° C), 1100 psig @ +400° F (76 bar @ +200° C)
-50° to +400° F (-45° to +200° C) ¿
Process connections
Pressure rating
Temperature rating
¿ For operating temperatures between +250° F and +400° F (+120° C and +200° C), either use remote electronics or a longer length insertion
probe to provide an additional four inches (100 mm) between the electronics and the compression fitting.
62
54-631 THERMATEL Model TA2 Transmitter
4.7.5 Physical – inches (mm)
4.49 (114)
3/4"
NPT
or M20
connection
A
B
5.18
(132)
6.49
(165)
Optional
compression
fitting
" or 1" NPT
recommended
Pipe
centerline
Dimension A:
3.33 (85) without display
3.88 (99) with display
Dimension B:
3.88 (99)
Insertion
Length
1" (25 mm)
Front View
Rotation clearance
NEMA 4X/7/9
Side View
4.00
(102)
4.49
(114)
3.95
(100)
3/4"
NPT
or M20
NEMA 4X/7/9
6.3 (160)
2 Holes
.38 (10) dia.
2.75
(70)
Insertion
length
3.00
(76)
2.00
(51)
3.50
(89)
3.75
(95)
Main Electronics
54-631 THERMATEL Model TA2 Transmitter
3/4"
NPT
or M20
Transducer
cable connector
/ " (19)
3 4
Remote Probe with Housing
63
4.7.5 Physical – inches (mm)
A
A
B
B
L1
L
L1
L
Length (L)
L1
Overall Height (B)
Height to
Size
Centerline
With Flow Without Flow With Flow
Without Flow
(A)
Conditioning Conditioning Conditioning Conditioning
Code
0
1
1
3
NPT
Flange
⁄2"
8 (203)
—
5 (127)
—
8.0 (203)
8.4 (213)
9.7 (246)
⁄4"
11.25 (285)
—
7.5 (190)
—
8.0 (203)
8.5 (216)
9.9 (251)
2
1"
15 (381)
—
10 (254)
—
8.0 (203)
8.6 (218)
10.1 (257)
3
11⁄2"
19.5 (495)
7.5 (191)
12 (305)
3.75 (95)
8.3 (210)
9.2 (234)
10.8 (274)
4
2"
26 (660)
7.5 (191)
16 (406)
3.75 (95)
9.5 (241)
10.7 (272)
12.5 (318)
5
3"
39 (991)
10 (254)
24 (610)
5 (127)
9.5 (241)
N/A
13.3 (338)
6
4"
52 (1321)
12 (305)
36 (914)
6 (152)
9.5 (241)
N/A
14.0 (356)
Flow conditioning on 1⁄2" to 1" is provided due to length of flow body and sensor design.
Optional flow conditioning plate and straight run is available on flow bodies 11⁄2" and larger.
Pressure Drop
Pressure Drop with Flow Conditioning Plate
Flow Rate – Nm3/hr
100
½" ¾" 1"
10
5
1
0.5
1½" 2"
5000 10000
3" 4"
5
1000
1000
500
500
Pressure Drop – millibar
100
50
Flow Rate – Nm3/hr
500 1000
100
10
5
5
1
0.1
100
50
50
10
10
50
100
500 1000
1½" 2"
1
0.5
5000 10000
3" 4"
1000
500
Pressure Drop – millibar
50
Pressure Drop – inches of water
1000
500
10
Pressure Drop – inches of water
5
100
50
10
5
1
0.1
1
10
5
100
50
1000
500
Flow Rate – SCFM
10000
5000
1
10
5
100
50
1000
500
10000
5000
Flow Rate – SCFM
Pressure drop is based on air at +70° F and 1 atmosphere (density = 0.075 lb/ft3). For other gases, pressure or temperatures,
estimate pressure drop by multiplying value from chart by actual density (at operating conditions) divided by 0.075.
64
54-631 THERMATEL Model TA2 Transmitter
4.8
Model Numbers
4.8.1 Transmitter
SIGNAL OUTPUT
0
1
2
4
4-20 mA
4-20 mA with HART
FOUNDATION fieldbus
4-20 mA with HART, Pulse/Alarm, second mA Output
DISPLAY
0
B
None
Plug-in display with keypad (with window)
CALIBRATION–INSERTION PROBE
Actual Gas Calibration
0
Special ¿
1
Air
2
Nitrogen
3
Hydrogen
4
Natural Gas
6
Digester Gas
7
Propane
8
Oxygen
Air Equivalency / Correlation
5
Gas Correlation ¿
9
Air Equivalency
¿ Consult factory for approval
CALIBRATION–FLOW BODY
Actual Gas Calibration
A
Special ¿
B
Air
C
Nitrogen
D
Hydrogen
E
Natural Gas
G
Digester Gas
H
Propane
J
Oxygen
Air Equivalency / Correlation
F
Gas Correlation ¿
K
Air Equivalency
HOUSING LOCATION / AGENCY APPROVAL
3
Integral, general purpose, non-incendive, &
explosion proof FM/FMc/ATEX Ex d/IEC
4
Remote, general purpose, non-incendive, &
explosion proof FM/FMc/ATEX Ex d/IEC
E
Integral, general purpose, ATEX, Ex d+ ib (Zone 0)
F
Remote, general purpose, ATEX, Ex d+ ib (Zone 0)
ENCLOSURE TYPE
0
1
T
A
2
A
54-631 THERMATEL Model TA2 Transmitter
Aluminum, 3⁄4" NPT
Aluminum, M20
0
65
4.8.2 Insertion Probe
THERMATEL PROBE
TE
TM
Probe length in inches
Probe length in centimeters
PROBE TYPE
R
⁄4" diameter probe
3
MATERIALS OF CONSTRUCTION
A
B
316/316L Stainless Steel
Hastelloy C
PROCESS CONNECTION SIZE
00
03
04
05
06
11
21
22
Compression Fitting Utilized (customer supplied)
3
⁄4" NPT SS compression fitting with Teflon Ferrules
3
⁄4" NPT SS compression fitting with Stainless Steel Ferrules
1" NPT SS compression fitting with Teflon Ferrules
1" NPT SS compression fitting with Stainless Steel Ferrules
Threaded 3⁄4" NPT
Threaded 1" NPT
Threaded G1 (1" BSP)
ANSI FLANGES
23
24
33
34
43
44
1" 150#
1" 300#
11⁄2" 150#
11⁄2" 300#
2" 150#
2" 300#
DIN FLANGES
ANSI
ANSI
ANSI
ANSI
ANSI
ANSI
raised
raised
raised
raised
raised
raised
face
face
face
face
face
face
flange
flange
flange
flange
flange
flange
BB
CB
DA
DB
DN 25
DN 40
DN 50
DN 50
PN 16/25/40
PN 16/25/40
PN 16
PN 25/40
EN 1092-1, Type A
EN 1092-1, Type A
EN 1092-1, Type A
EN 1092-1, Type A
PROBE LENGTH
2.6 to 99.9 inches (example 8.5" = 085)
Minimum lengths: 2.6" (026) with threaded process connection
2.8" (028) with flanged process connection
4.5" (045) with compression fitting proces
connection
7 to 253 centimeters (example: 18 cm = 018)
Minimum lengths:
7 cm (007) with threaded or flanged process connection
11 cm (011) with compression fitting process connection
T
66
A
54-631 THERMATEL Model TA2 Transmitter
4.8.3 Flow Body
MATERIALS OF CONSTRUCTION
A
1
All stainless steel
Carbon steel body with stainless steel sensor
SIZE
0
1
2
3
4
5
6
⁄2 inch
⁄4 inch
1 inch
11⁄2 inch
2 inch
3 inch
4 inch
1
3
PROCESS CONNECTION TYPE
1
3
¿
NPT Threads ¿
150# Flange
Only when digit 5 = 0, 1, 2, 3, or 4
FLOW CONDITIONING PLATE (stainless steel)
A
B
T
F
T
54-631 THERMATEL Model TA2 Transmitter
Not provided
Provided ¡
Only when Digit 5 = 3, 4, 5, or 6. Flow conditioning on 1/2" to 1" is already provided
due to length of flow body and sensor design. Optional flow conditioning is available on
flow bodies larger than 1" which includes additional straight run and conditioning plate.
¡
0
0
0
67
4.8.4 Connecting Cable
FOR CABLE LENGTHS UP TO 150 FEET
037-3313-XXX (Cable length in feet)—10 feet minimum,
150 feet maximum length
Example: 50 feet = 050
0
3
7
3
3
1
3
FOR CABLE LENGTHS UP TO 45 METERS
037-3314-XXX (Cable length in meters)—3 meters minimum,
45 meters maximum length
Example: 8 meters = 008
0
3
7
3
3
1
4
FOR CABLE LENGTHS BETWEEN 150 AND 500 FEET
037-3319-XXX (Cable length in feet)— 500 feet
maximum length
Example: 300 feet = 300
0
3
7
3
3
1
9
FOR CABLE LENGTHS BETWEEN 45 AND 150 METERS
037-3320-XXX (Cable length in meters)—150 meters
maximum length
Example: 80 meters = 080
0
68
3
7
3
3
2
0
54-631 THERMATEL Model TA2 Transmitter
Glossary
Atmospheric pressure: Average pressure at sea level.
One atmosphere pressure is equal to 14.696 psia or
29.921 inches of mercury or 406.8 inches of water.
Bar: Unit of pressure measurement. One bar equals
14.504 pounds per square inch or 100 kilopascals.
Celsius (C): Unit of temperature measurement. At one
atmosphere pressure: at zero degrees Celsius, water
freezes; at +100 degrees Celsius, water boils. One
degree Celsius is equal to 1.8 degrees Fahrenheit.
Tc= (Tf -32) ÷ 1.8
Fahrenheit (F): Unit of temperature measurement. At
one atmosphere pressure: at +32 degrees Fahrenheit,
water freezes; at +212 degrees Fahrenheit, water boils.
Tf = 1.8 × Tc +32
Kelvin: Unit of temperature measurement referenced
to absolute conditions.
Kelvin = Degrees Celsius + 273.15
NIST: National Institute of Science and Technology
Nm3/h (Normal cubic meters per hour): Flow measurement at normal (standard) conditions (STP).
PSIA: Absolute pressure in pounds per square inch.
Zero psia is an absolute vacuum.
1 atmosphere pressure = 14.696 psia
PSIA = PSIG + 14.696
PSIG: Gauge pressure in pounds per square inch above
atmospheric pressure.
Rankine: Unit of temperature measurement referenced
to absolute conditions.
Degrees Rankine = Degrees Fahrenheit + 459.67
SCFH (standard cubic feet per hour): Flow measurement at standard (STP) conditions.
SCFM (standard cubic feet per minute): Flow measurement at standard (STP) conditions.
SFPM (standard feet per minute): Velocity of gas
flowing in the pipe or duct referenced to standard
(STP) conditions.
Standard Conditions: Typical is +70° F and one
atmosphere pressure (14.7 psia) or 0° C and one bar
pressure (14.5 psia).
STP (standard pressure and temperature): Also
referred to as standard conditions.
54-631 THERMATEL Model TA2 Transmitter
The following symbols and definitions are used in the
software configuration:
Install Factors: The TA2 assumes a fully developed
flow profile at the sensor location. Differences in flow
profile or other installation issues can affect the measurement of the TA2. Advanced users have the ability to
adjust the TA2 measurement using a polynomial relationship in the form of:
Corrected flow = A+Bx+Cx 2
The default is B = 1 and A and C factors = 0. The units
for “x” are the units of measurement selected under I/O
Configuration/AO1 Loop Control. The most common
adjustment is the linear “B” factor.
Once determined, the Install Factors can be entered
into the TA2 under the Advanced Configuration menu.
See section 2.5.11.
LRV: Lower Range Value. The value that corresponds
to the lower operating range of the instrument; also
considered as the 4 mA value.
Mass flow: Measured in various units, typically LB/Hr
or Kg/h. An input of the flow area of the pipe or duct
and density is required.
STP conditions: The mass flow rate is based on a
given set of Standard Temperature and Pressure (STP)
conditions. MAGNETROL uses default of +70° F and
one (1) atmosphere for STP conditions. The STP conditions may be modified to match the user’s standards.
If the STP conditions are modified, the TA2 will recalculate the flow rates at the specified STP conditions.
The advanced configuration menu permits the user to
enter any desired temperature and cycle between selection of one (1) bar or one (1) atmosphere of pressure.
Totalized flow: Provides a measurement of the total
flow in units specified.
Flow: Measured in various units, typically SCFM (standard cubic feet per minute), SCFH (standard cubic feet
per hour), MMSCFD (million standard Cubic Feet per
Day), or Nm3/h (normal cubic meters per hour), referenced to standard conditions. An input of the flow area
of the pipe or duct is required to obtain this value.
Tag line: Tag lines are programmable for both
Display (16-character Local Tag) or HART (8-character
HART tag)
Initially the local tag line on the display reads
“MAGNETROL TA2”. This can be changed from the
advanced configuration section of the software.
See Device Information Section 2.5.12.
URV: Upper Range Value. The value that corresponds
to the upper operating range of the instrument; also
considered as the 20 mA value.
69
Appendix A
The flow measurement of the TA2 assumes that the end of the
probe is one inch past the centerline and the presence of a fully
developed flow profile. See Figure A.
RD = 3,000,000
RD = 4,000
Figure B
Flow Profile Following
Single Elbow
Figure C, below, indicates the minimum recommended straightrun distances required to obtain the desired fully developed flow
profile. If these straight-run distances are not available, the overall accuracy of the flow measurement will be affected; however,
the repeatability of the measurement will be maintained.
Figure A
Turbulent Flow Profile
As gas flows in a pipe or duct, the flow profile will change with
obstructions and changes in flow direction. As the gas flows
around an elbow, the momentum causes the gas velocity on the
outside of the elbow to increase and the velocity on the inside to
decrease. See figure B.
The user has the ability to enter correction factors to compensate
for non-ideal flow profile conditions.
FLOW
FLOW
15 diameters
5
diameters
15 diameters
5
diameters
Reduction
90-Degree Elbow
FLOW
FLOW
20 diameters
5
diameters
Two 90-Degree Elbows in Plane
15 diameters
5
diameters
Expansion
FLOW
FLOW
35 diameters
5
diameters
Two 90-Degree Elbows out of Plane
50 diameters
5
diameters
Control Valve - It is recommended that control
valves be installed downstream of the flow meter.
Figure C – Probe Installations
70
54-631 THERMATEL Model TA2 Transmitter
Appendix A (continued)
Conditioning Plates
Flow conditioning plates may be provided in applications where
limited straight run is available. Plates are available in flow body
type sensor designs (TFT) from 1.5” to 4” pipes. Plates may be
purchased separately for pipe sizes 4” to 12” when using insertion probes (TXR).
The plate should be installed 2-5 diameters downstream of the
nearest obstruction, change in pipe inside diameter or change in
flow direction. For TXR designs, the insertion probe can be
installed 8 pipe diameters downstream of the plate with 5 diameters required downstream of the TXR. For TFT designs with the
plate at the entrance, the downstream is provided in the length
of the TFT.
Plates are to be fitted with gaskets (customer supplied) in
between flanges. If plates are not included and recommended
straight run is not adhered to, the TA2 will provide repeatable
measurement and the installation factors can be utilized.
THICKNESS
INSIDE DIAMETER
OUTSIDE DIAMETER
Part Number
Description
OD in (mm)
ID in (mm)
Thickness in (mm)
004-8986-001
4" 316 Stainless Steel
6.19 (157.2)
3.83 (97.3)
0.50 (12.7)
004-8986-002
4" Carbon Steel
6.19 (157.2)
3.83 (97.3)
0.50 (12.7)
004-8986-003
4" PVC
6.19 (157.2)
3.83 (97.3)
0.50 (12.7)
004-8986-004
5" 316 Stainless Steel
7.31 (185.7)
4.81 (122.2)
0.63 (16)
004-8986-005
5" Carbon Steel
7.31 (185.7)
4.81 (122.2)
0.63 (16)
004-8986-006
5" PVC
7.31 (185.7)
4.81 (122.2)
0.63 (16)
004-8986-007
6" 316 Stainless Steel
8.50 (215.9)
5.76 (146.3)
0.75 (19.1)
004-8986-008
6" Carbon Steel
8.50 (215.9)
5.76 (146.3)
0.75 (19.1)
004-8986-009
6" PVC
8.50 (215.9)
5.76 (146.3)
0.75 (19.1)
004-8986-010
8" 316 Stainless Steel
10.62 (269.7)
7.63 (193.7)
1.00 (25.4)
004-8986-011
8" Carbon Steel
10.62 (269.7)
7.63 (193.7)
1.00 (25.4)
004-8986-012
8" PVC
10.62 (269.7)
7.63 (193.7)
1.00 (25.4)
004-8986-013
10" 316 Stainless Steel
12.75 (323.9)
9.56 (242.9)
1.25 (31.8)
004-8986-014
10" Carbon Steel
12.75 (323.9)
9.56 (242.9)
1.25 (31.8)
004-8986-015
10" PVC
12.75 (323.9)
9.56 (242.9)
1.25 (31.8)
004-8986-016
12" 316 Stainless Steel
15.00 (381)
11.37 (288.9)
1.50 (38.1)
004-8986-017
12" Carbon Steel
15.00 (381)
11.37 (288.9)
1.50 (38.1)
004-8986-018
12" PVC
15.00 (381)
11.37 (288.9)
1.50 (38.1)
54-631 THERMATEL Model TA2 Transmitter
71
Appendix A (continued)
Pressure Drop Charts
Pressure Drop (inches of water)
1000
1.5"
3"
4"
5"
6"
100
8"
10"
12"
10
1
0.1
0.01
0.001
0.0001
10
100
Flow Rate (SCFM)
1000
1000
1.5"
10000
2"
3"
4"
5"
6"
100
Pressure Drop (millibar)
2"
8"
10"
12"
10
1
0.1
0.01
0.001
0.0001
10
72
100
Flow Rate (Nm3/h)
1000
10000
54-631 THERMATEL Model TA2 Transmitter
Appendix B
TA2 Mass Flow Meter – Using both Pulse and 2nd mA connections
The pulse output and second mA output (commonly used for
Temperature) in the TA2 share a common ground. They are
isolated from the remaining input and output connections of the
instrument.
A flow computer or other receiving device may have common
ground for the various input signals. This may cause difficulties
when using both the TA2 pulse and second mA output with an
external power supply or the power supply in the flow computer.
MAGNETROL refers to the use of a separate power supply as a
passive connection from the TA2 as compared to an active connection where the TA2 provides power for the output signal
(sometimes referred to as self-powered).
Isolation problems may be encountered if the user wants to connect both the passive pulse output and the second mA output
(always passive connection) from the TA2 to a flow computer or
other input device with common grounds. The attached illustration shows a recommended solution using a solid state relay
between the flow computer and the active TA2 pulse output.
EXTERNAL POWER SUPPLY
(CUSTOMERS)
GND_EXT
FLOW COMPUTER (CUSTOMERS)
TOTALIZER
PULSE INPUT
V_EXT
(+24V)
EXAMPLE OF A DC SOLID STATE RELAY
(CUSTOMERS)
2.00K
OHMS
2.00K OHMS
DI1
THESE
GND_FLOW_COMPUTER
GROUNDS
ARE LIKELY
TO BE INTERNALLY TEMP. INPUT DI2
TIED TOGETHER
A+ 1 TB4
A–/P+ 2
P– X3
ENHANCED TA2 UNIT
V_TA2
(+24V)
GND_TA2
250 OHMS
P+ 1 TB5
P– 2
THESE GROUNDS
ARE INTERNALLY
TIED TOGETHER
GND_TA2
GND_FLOW_
COMPUTER
54-631 THERMATEL Model TA2 Transmitter
73
Appendix C
Enhanced TA2 Pulse Output
The Enhanced TA2 has an option for providing a pulse output.
The Pulse is an open collector output; the output can be either a
powered (active) connection or a passive connection using an
external power supply. With an active output the voltage will go
from 0 to 24 VDC (± 10%) with each pulse. The voltage on the
passive connection will depend on the power supply used.
One pulse will correspond to a specific amount of flow. There
are several factors which need to be configured to obtain the
desired operation.
Multiplier: The multiplier value is a factor which relates the
amount of flow per pulse. For instance a factor of 0.01 with
units set to SCF means that each pulse will correspond to 0.01
SCF or conversely there will be 100 pulses for every SCF.
Frequency: Represents the maximum frequency of the pulses.
This is selectable from 10 to 10,000 Hz. This value should not
exceed the maximum input rate of the device receiving the pulses. If the actual pulse output based on the flow measurement
exceeds the maximum frequency selected a Warning Message
indicating “Pulse Multiplier error” will appear on the display and
be communicated over HART. The pulse width is fixed based
on the value selected. For instance with a selected maximum frequency of 1,000 each pulse occur every 1/1000 seconds (1 ms).
Each pulse is a square wave with a 50% duty cycle; half of each
pulse width is on with voltage applied and half off with no voltage. This results in a pulse width of 0.0005 seconds (0.5 ms).
The pulses are transmitted at a fixed rate for a fraction of a second with no pulses for the remaining time.
When configuring the frequency, calculate the pulse rate by
using a Time Factor which is equivalent to the number of seconds in the time period. If flow rate is in units/minute the Time
Factor = 60; if the flow rate is in units/hour the Time Factor =
3600.
The formula for determining the pulse rate is:
Pulse rate = Flow rate/(Time Factor * multiplier)
Example:
Flow rate = 2,000 SCFH
Time factor = 3600
Multiplier = 0.001 (0.001 SCF/pulse)
The frequency will be equal to 2,000/(3600 * 0.001) = 555 Hz and the maximum frequency can be set to either 1,000 or 10,000.
74
54-631 THERMATEL Model TA2 Transmitter
Flow Application Questionnaire
Thermatel Model TA2
(Please fill out in detail.)
BULLETIN: 54-350.7
REFERENCE INFORMATION
Customer/Company:
Date:
Contact/Title:
Phone:
Fax:
FOR OFFICE USE:
Submitted by:
INSTRUMENT
Model Number: Electronics
Probe/Flow Body:
Remote Cable:
Compression Fitting/RPA:
Quantity:
PROCESS DATA
Application:
Gas composition (vol%):
Condensed Moisture in Gas?
No
Yes
Dust Buildup?
Maximum
None
Light
Normal
Heavy
Type of Dust:
Minimum
Units
Flow Rate
Temperature
Pressure
STP Conditions
Specify Standard Temperature and Pressure conditions (If not specified Magnetrol uses 70° F and 1 Atmosphere)
Temperature:
Pressure:
1 Atmosphere
1 Bar
PIPE DIMENSIONS
DUCT INTERNAL DIMENSIONS
Pipe Diameter:
inch Schedule
or Pipe ID:
Diameter
units
or Metric Pipe:
Rectangular dimensions
mm OD
units
units
mm wall thickness
FACTORY CONFIGURATION (Check one)
SCFM*
Nm3/min
lbs/min*
SCFH*
Nm3/h*
lbs/h*
SCFD
Nm /d
lbs/d
MSCFD
NI/min
kg/min*
MMSCFD*
NI/h*
kg/h*
NI/d
kg/d
4 mA value (0%)
3
20 mA value (100%)
Flow
Temperature
(TA2-A4)
F
* Indicates which units are available for FOUNDATION™ fieldbus option
PROBE LENGTH CALCULATIONS
The probe can be ordered in 0.1 inch or 1 cm increments. This is most important when used with a
flange or threaded connection to ensure that the sensor is located on the centerline of the pipe. The
active portion of the sensor is located 1" (2.5 cm) from the end of the probe. Refer to illustration at right.
D/2
D
1"(2.5 cm)
REMARKS
54-631 THERMATEL Model TA2 Transmitter
75
ASSURED QUALITY & SERVICE COST LESS
Service Policy
Return Material Procedure
Owners of MAGNETROL may request the return of a or
any part of a control for complete rebuilding or replacement. They will be rebuilt or replaced promptly. Controls
returned under our service policy must be returned by
prepaid transportation. MAGNETROL will repair or
replace the control at no cost to the purchaser (or owner)
other than transportation if:
So that we may efficiently process any materials that are
returned, it is essential that a “Return Material
Authorization” (RMA) number be obtained from the factory, prior to the material’s return. This is available through
a MAGNETROL local representative or by contacting the
factory. Please supply the following information:
1. Returned within the warranty period; and
2. The factory inspection finds the cause of the claim
to be covered under the warranty.
If the trouble is the result of conditions beyond our control; or, is NOT covered by the warranty, there will be
charges for labor and the parts required to rebuild or
replace the equipment.
In some cases it may be expedient to ship replacement
parts; or, in extreme cases a complete new control, to
replace the original equipment before it is returned. If
this is desired, notify the factory of both the model and
serial numbers of the control to be replaced. In such
cases, credit for the materials returned will be determined
on the basis of the applicability of our warranty.
1.
2.
3.
4.
5.
Company Name
Description of Material
Serial Number
Reason for Return
Application
Any unit that was used in a process must be properly
cleaned in accordance with OSHA standards, before it is
returned to the factory.
A Material Safety Data Sheet (MSDS) must accompany
material that was used in any media.
All shipments returned to the factory must be by prepaid
transportation.
All replacements will be shipped F.O.B. factory.
No claims for misapplication, labor, direct or consequential damage will be allowed.
705 Enterprise Street • Aurora, Illinois 60504-8149 • 630-969-4000 • Fax 630-969-9489
info@magnetrol.com • www.magnetrol.com
Copyright © 2016 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
MAGNETROL & MAGNETROL logotype and THERMATEL are registered trademarks of MAGNETROL International, Incorporated
CSA logotype is a registered trademark of Canadian Standards Association
HART is a registered trademark of the HART Communication Foundation
Hastelloy is a registered trademark of Haynes International, Inc.
PACTware is trademark of PACTware Consortium
Teflon is a registered trademark of DuPont.
BULLETIN: 54-631.2
EFFECTIVE: January 2015
SUPERSEDES: April 2011