MAGNETROL 355-500A-10R

Echotel® Model 355
Installation and Operating Manual
Two-Wire Non-Contact
Ultrasonic Transmitter
For Level, Volume,
and Open Channel Flow
Measurement
Cast aluminum housing with
Kynar® transducer
Lexan® housing with
polypropylene transducer
Read this Manual Before Installing
This manual provides information on the Echotel
Model 355 Ultrasonic 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 and computer equipment when working with or
around high voltage. Always shut off the power supply
before touching any components. Although high voltage
is not present in this system, it may be present in other
systems.
Electrical components are sensitive to electrostatic discharge. To prevent equipment damage, observe safety
procedures when working with electrostatic sensitive
components.
WARNING Explosion hazard. Do not connect or
disconnect designs rated Explosion-proof or Non-incendive unless power has been switched off and/or the area is
known to be non-hazardous
Notice of Copyright and Limitations
Magnetrol & Magnetrol logotype, and Echotel are registered trademarks of Magnetrol International.
Copyright © 2009 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.
Magnetrol’s 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.
Low Voltage Directive
For use in Installations Category I, Pollution Degree 2.
If equipment is used in a manner not specified by the
manufacturer, protection provided by equipment may be
impaired.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
Echotel Model 355
Non-Contact Ultrasonic Transmitter
Table of Contents
1.0 Introduction
1.1 Principle of Operation .............................................4
2.0 Installation
2.1 Unpacking ...............................................................5
2.2 Electrostatic Discharge (ESD) Handling Procedure .....5
2.3 Mounting and Application Considerations ..............6
2.3.1 Position .........................................................6
2.3.2 Orientation ...................................................6
2.3.3 Temperature ..................................................6
2.3.4 Obstructions .................................................7
2.3.5 Pipe Nozzles..................................................7
2.3.6 Foam.............................................................7
2.3.7 Vapors ...........................................................7
2.3.8 Wind.............................................................7
2.3.9 Open Channel Flow Measurement ...............7
2.4 Wiring .....................................................................8
2.4.1 General Purpose or Non-Incendive ...............8
2.4.2 Intrinsically Safe............................................9
2.4.3 Explosion Proof.............................................9
2.5 Configuring the Transmitter ..................................10
2.5.1 Basic Operating Parameters.........................10
2.5.2 Setting Up for Bench Configuration ...........10
2.5.3 Transmitter Initialization.............................10
2.5.4 Transmitter Display and Keypad .................11
2.5.4.1 Menu Traversal Mode .....................11
2.5.4.2 Character Data Entry Mode............11
2.5.4.3 Numeric Digit Entry Mode ............12
2.5.4.4 Increment/Decrement Entry Mode ..12
2.5.5 Password Protection (Default = 0)...............13
2.5.6 Configuration Menu Overview ...................13
2.5.7 Measured Values Menu ...............................13
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8 System Configuration Menu .......................16
2.5.8.1 Level Applications ...........................17
2.5.8.2 Volume Applications .......................18
2.5.8.3 Open Channel Flow Applications ...23
2.5.9 I/O Configuration Menu ............................30
2.5.10 Advanced Configuration Menu...................34
2.5.11 Diagnostics Menu .......................................41
2.5.12 Factory Configuration Menu ......................45
2.6 Configuration Using HART®.................................46
2.6.1 Connections................................................46
2.6.2 Display Menu .............................................46
2.6.3 HART® Menu .............................................47
3.0 Reference Information
3.1 Troubleshooting .....................................................49
3.1.1 Troubleshooting System Problems...............50
3.1.2 Error Messages ............................................50
3.2 Measurement Range Calculations ..........................52
3.3 Speed of Sound Through Gases .............................53
3.4 Parts.......................................................................53
3.4.1 Replacement Parts.......................................53
3.4.2 Replacement Spare Parts .............................54
3.5 Agency Approvals...................................................54
3.5.1 Agency (FM/FMc) Drawing and
Entity Parameters .....................................55
3.6 Specifications .........................................................56
3.6.1 Transmitter..................................................56
3.6.2 Transducer ..................................................56
3.6.3 Performance ................................................56
3.6.4 Physical .......................................................57
3.7 Model Number ......................................................58
Model 355 Configuration Data Sheet ..................................59
1.0
Introduction
Echotel Model 355 is a two-wire non-contact transmitter
that performs level, volume, and open channel flow measurements in a wide variety of industrial and municipal
applications. A maximum range of 20 feet (6 meters) can
be measured under ideal conditions. The maximum range
will be less than this if there is excessive turbulence, foam
or other adverse application conditions. The user should
consult section 3.2, Measurement Range Calculations, to
make sure that the Model 355 is suited for the specific
application.
1.1
Blocking
Distance
Distance (measured)
Range
Level
(range - distance)
Non-contact ultrasonic measurement is obtained by emitting an ultrasonic pulse from the transducer and measuring the time required for the echo to reflect from the liquid surface and return to the transducer. The Model 355
measures the time of the round trip pulse and calculates
the distance using the equation:
D = Va2 T
D = Distance to target
Va = Velocity of sound through air (1,128 ft/sec.)
T = Time for one round trip sound pulse
Level/Volume Application
Since the speed of sound is temperature dependent, the
transducer also measures the temperature at the transducer
to provide compensation for changing air temperatures.
Level is computed by the 355 electronics using the measured distance and the configuration data that has been
entered for the vessel dimensions.
Model 355
Flow
Parshall
Flume
Principle of Operation
By knowing the vessel type and it’s dimensions, the electronics can calculate the liquid volume in the vessel. In a similar
operation, the Model 355 can perform open channel flow
measurement by converting the level reading into units of
volume per unit of time. Common tank shapes, flumes and
weirs are stored in the 355 software. A 20-point linearization table is also available for unusual tanks or primary flow
elements.
Open Channel Flow Application
4
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.0
Installation
This section provides detailed procedures for properly
installing, configuring, and, as needed, troubleshooting the
Model 355 Ultrasonic Transmitter.
2.1
Unpacking
Unpack the instrument carefully. Make sure all components
have been removed from the packing material. Check all the
contents against the packing slip and report any discrepancies
to the factory.
Before proceeding with the installation, do the following:
• Inspect all components for damage. Report any damage to
the carrier within 24 hours.
• Make sure the model number on the nameplate agrees with
the packing slip and purchase order.
• Record the model and serial numbers for future reference
when ordering parts.
Model Number
Serial Number
2.2
Electrostatic Discharge (ESD)
Handling Procedure
Magnetrol’s electronic instruments are manufactured to the
highest quality standards. These instruments use electronic
components that may be damaged by static electricity present in most work environments.
•
•
•
•
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
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 the 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 recommended.
Handle circuit boards only by the edges. Do not touch
components or connector pins.
Make sure that all electrical connections are completely
made and none are partial or floating. Ground all equipment to a good earth ground.
5
2.3
Mounting and Application Considerations
Caution: Unit should only be hand-tightened into the process connection. Overtightening may cause transducer errors and
will void the warranty.
5 feet
r=5.2 inches
10 feet
r=10.5 inches
15 feet
r=15.7 inches
r
20 feet
r=21.0 inches
Beam
Radius
(r)(r)vs.
Beam
Radius
vs.Distance
Distance
Caution: The Model 355 uses a thermoplastic transducer that
should not be used in liquid media that have esters or
ketones.
Special Conditions for Safe Use:
1. Materials marked as Category I equipment and used in hazardous areas requiring this category shall be installed in such a
way that, even in the event of rare incidents, the aluminum
enclosure cannot be an ignition source due to impact or friction
2. The transmitter shall be installed so that electrostatic
discharges on plastic parts are prevented.
NOTE: Remove the black protective plastic cap from the end of the
transducer.
1/2
Radius
1/2
Radius
There are several application considerations that should be
evaluated prior to installing a non-contact ultrasonic transmitter. The next few pages should be read thoroughly to
ensure that the Model 355 will perform as expected in
the given application. Section 3.2, Measurement Range
Calculations, provides derating multipliers that should be
used to determine the maximum potential range in difficult applications.
2.3.1 Position
Mounting Position
The optimum mounting position of the Model 355 is
between 1⁄2 and 1⁄3 of the radius of the (cylindrical) tank.
This will position the unit to minimize any interference
that the 10° beam (5° half angle) has with the tank walls
or any agitator blades that exist in the tank. Refer to the
Beam Radius vs. Distance figure at left.
2.3.2 Orientation
The face of the transducer must be parallel to the liquid
surface within 2° to 3° for proper operation.
Sunshade
2.3.3 Temperature
Ensure that the Model 355 will be protected against overheating by intense direct sunshine. When the unit will be subjected
to severe direct sun, the use of a sunshade is recommended.
Sunshade Recommendation
6
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.3.4 Obstructions
Length
Preferred mounting is such that no obstacles (e.g., fill
pipes, ladders, bracing members, agitator blades, etc.)
obstruct the ultrasonic beam. Minor obstacles in the path
of the ultrasonic beam can be programmed out through
the use of the Echo Profile menu in Advanced
Configuration. For further information on vessel obstructions, see Section 3.2, Measurement Range Calculations.
Diameter
2.3.5 Pipe Nozzles
Standpipe Diameter
Maximum Length
2" (50 mm)
Not Recommended
3" (75 mm)
9" (225 mm)
4" (100 mm)
12" (300 mm)
5" (125 mm)
15" (375 mm)
6" (150 mm)
8" (200 mm)
18" (450 mm)
20" (500 mm)
Ideally, the 355 should be mounted so that the transducer
face is at least 10" (250 mm) above the highest anticipated
level. In applications where the material level may come
into the blocking distance, the transducer can be mounted
in a pipe nozzle (standpipe). The inner rim of the nozzle
must be smooth and free of burrs. False echoes can sometimes be produced by the change in impedance at the end
of a nozzle. Cutting the bottom of the nozzle at a 45°
angle is suggested to help eliminate false echoes by reducing this impedance change. The maximum length for a
given diameter of nozzle is shown at left.
Standpipe Mounting
2.3.6 Foam
Foaming of the liquid surface may render ultrasonic level
measurement impossible. If possible, a mounting location
should be found where foaming is at a minimum. Another
alternative is to install the transducer in a stilling well that
extends below the lowest level to be measured in the tank.
Refer to Section 3.2, Measurement Range Calculations,
for more information.
45°
2.3.7 Vapors
Closed tanks that contain chemicals or other liquids that
create vapors may severely reduce the maximum measuring range. Refer to the Section 3.2, Measurement Range
Calculations for more information.
Nozzle Cut
Model 355
2.3.8 Wind
Flow
Strong air flow or wind in the vicinity of the ultrasonic
beam should be avoided. A strong wind may prevent the
return echo from being received by the transducer.
2.3.9 Open Channel Flow Measurement
Parshall
Flume
Open Channel Flow Mounting
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
For the best accuracy, mount the transducer as close as possible above the expected maximum water level (Head) in the
flume or weir (usually 12 to 18 inches (300 to 450 mm)
higher than the maximum head in the flume or weir).
Install the Model 355 on the inflow side of the flume throat
or weir crest in the location defined by the manufacturer
of the primary measuring device. The unit should also be
aligned with the longitudinal axis of the flume or weir.
7
2.4
Wiring
Caution: The Echotel Model 355 transmitter operates at voltages of
16 to 36 VDC (GP), 16 to 28.6 VDC (IS) and 16 to 36 VDC
(XP). Higher voltage will damage the transmitter.
Ground
Black Wire (-)
)+(
)-(
Red Wire (+)
Wiring Diagram
Caution: The Lexan® housing should only be used as “end of line”,
with one conduit entry plugged. If cable glands are used
with the Lexan housing, they should be non-metallic.
Wiring between the power supply and the Echotel Model 355
transmitter should be made using 18–22 AWG shielded
twisted pair instrument cable. Wiring must be suitable for
temperatures up to at least +185° F (+85° C). Within the
transmitter enclosure, connections are made to the terminal strip and the ground connections. The directions for
wiring the Echotel Model 355 transmitter depend on the
application:
• General Purpose or Non-incendive (Cl I, Div. 2)
• Intrinsically Safe
• Explosion Proof
2.4.1 General Purpose or Non-Incendive
This equipment is suitable for installation in Class I,
Division 2, Groups A, B, C, and D hazardous or
non-hazardous locations.
WARNING Explosion Hazard. Substitution of components may
impair suitability for Class I, Division 2.
A general purpose installation does not have flammable
media present. Areas rated non-incendive (Cl I, Div. 2)
have flammable media present only under abnormal
conditions. No special electrical connections are required.
Caution: If flammable media is contained in the vessel, the
transmitter must be installed per Cl I, Div. 1 standards of
area classification.
To install General Purpose or Non-Incendive wiring:
1. Remove the cover of the transmitter. Install the conduit
plug in the unused opening. Use PTFE tape/sealant to
ensure a liquid-tight connection.
2. Install a conduit fitting and pull the supply wires.
3. Connect shield to an earth ground at power supply.
4. Connect an earth ground wire to the green ground screw.
Use a minimum 18 AWG wire rated up to +185° F (+85° C).
5. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
6. Replace the cover of the transmitter.
8
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.4.2 Intrinsically Safe
An intrinsically safe (IS) installation potentially has flammable media present. An approved IS barrier must be
installed in the non-hazardous (safe) area. See Agency
Drawing, Section 3.5.1.
To install Intrinsically Safe wiring:
1. Make sure the IS barrier is properly installed in the safe
area (refer to local plant or facility procedures). Complete
the wiring from the barrier to the Echotel 355 transmitter.
2. Remove the cover of the transmitter. Install the conduit
plug in the unused opening. Use PTFE tape/sealant to
ensure a liquid-tight connection.
3. Install a conduit fitting and pull the supply wires.
4. Connect shield to an earth ground at power supply.
5. Connect an earth ground wire to the green ground screw.
Use a minimum 18 AWG wire rated up to +185° F +(85° C).
6. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
7. Replace the cover of the transmitter.
2.4.3 Explosion Proof
WARNING Explosion hazard. Do not disconnect equipment unless
power has been switched off or the area is known to be
non-hazardous.
Explosion Proof (XP) is a method of designing equipment
for installation in hazardous areas. A hazardous location is
an area in which flammable gases or vapors are, or may be,
present in the air in quantities sufficient to produce explosive or ignitable mixtures. The wiring for the transmitter
must be contained in Explosion Proof conduit extending
into the safe area. See Agency Approvals, Section 3.5.
To install Explosion Proof wiring:
1. Install Explosion Proof conduit from the safe area to the
conduit connection of the Echotel Model 355 transmitter
(refer to local plant or facility procedures).
2. Remove the cover of the transmitter.
3. Connect shield to an earth ground at the power supply.
4. Connect an Earth ground wire to the green ground screw
per local electrical code. Use a minimum 18 AWG wire
rated up to +185° F (+85° C).
5. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
6. The cover must be completely installed before power may
be applied.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
9
2.5
Configuring the Transmitter
Echotel Model 355 Ultrasonic Transmitters do not need to
be calibrated since they operate purely as time-of-flight
units based on the speed-of-sound. Configuring the
Model 355 for a specific level, volume, or open channel
flow application can be completed in minutes.
Configuration is easily performed at the vessel, or on a
bench prior to being installed in the field.
2.5.1 Basic Operating Parameters
The following operating parameters are used in configuring the Model 355 ultrasonic transmitter:
Blocking
Distance
Distance (measured)
Range
Level
(range - distance)
Level Offset
Configuration Parameters
• Range: Distance from the face of the transducer to the
bottom of the vessel/channel.
• Blocking Distance: Minimum distance of 10" (250 mm)
in front of the transducer that is a “blind space” where the
transmitter cannot make any measurements.
• Level Offset: If any obstructions (heating coils, mixing
blades, angled bottoms, etc.) exist at the bottom of the
tank, a Level Offset can be set to ignore reflections from
these objects.
• Distance: This is measured by the transmitter independent
of any of the configuration data. It is distance from the face
of the transducer to the target.
• Level: Computed by the transmitter as the configured
Range minus the measured Distance.
2.5.2 Setting Up for Bench Configuration
The Model 355 can be configured at a test bench by connecting a 24 VDC power supply directly to the transmitter
terminals. Section 2.4 shows the wiring connections.
When using a HART communicator for configuration, a
minimum 250 Ω line load resistance is required. See the
HART communicator manual for more information.
To verify basic operation the 355 can be pointed at a stable
target at an appropriate distance and held steady. This can
be accomplished by holding the unit 2 to 4 feet (610 to
1220 mm) from the floor and observing the display for
1–2 minutes.
2.5.3 Transmitter Initialization
When power is first applied to the unit, the transmitter
goes through an initialization period. During this period
the unit will show “Initializing.” After approximately 30
seconds the Model 355 will either begin to display measured values such as “Level” and “Distance,” or display
another status screen if a diagnostic condition is present.
10
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.4 Transmitter Display and Keypad
The 355 transmitter has a local user interface consisting of a
2-line by 16-character liquid crystal display (LCD) and 4push-button keypad. All transmitter measurement data and
configuration information is shown in the LCD.
While configuring the unit with the local user interface the
transmitter cover is off and all 16 characters can be displayed
by the LCD. During normal operation the cover obscures
part of the LCD and only 12 characters are shown. For this
reason, the Measured Values and Diagnostic data are shown
as 12 characters per line so that they can be completely seen
through the cover window.
Model 355 is configured via a “tree” type menu structure,
where it is easy to access branches of the tree to configure the
various transmitter parameters. The four push buttons have
different functions for various operating modes within the
menu structure.
2.5.4.1 Menu Traversal Mode
When going from one branch of the menu to another the
push buttons operate as follows:
Push button
Keystroke Action
Up
Moves to the previous item in the menu branch
Down
Moves to the next item in the menu branch
Back
Moves back one level to the previous higher branch item
Enter
Enters into the lower level branch or switches to the entry mode
2.5.4.2 Character Data Entry Mode
This mode is most commonly used when entering a new
local tag into the 355 transmitter. The local tag as shipped
from the factory is “Model 355” but can be changed to
have the actual tag number of the vessel or primary element. When entering data in the Character Data Entry
Mode, the leftmost character on the lower line of the LCD
will be a cursor. Data is entered at the cursor by using the
push buttons as follows:
Push button
Up
Down
Keystroke Action
Moves to the previous character (Z,Y,X,W). If held down the
characters scroll until the push button is released.
Moves to the next item character (A,B,C,D). If held down the
characters scroll until the push button is released.
Back
Moves the cursor back to the left. If the cursor is already at the
leftmost position, then the screen is exited without changing the
original tag characters.
Enter
Moves the cursor forward to the right. If the cursor is at the
rightmost position, then the new tag is saved.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
11
2.5.4.3 Numeric Digit Entry Mode
The Numeric Digit Entry Mode is used to enter most of
the numeric values in the System and I/O Configuration
screens. This mode is accessed when the Enter
key is
pressed on a menu item that presents a saved numeric
value such as the Range setting. Data is entered at the cursor by using the push buttons as follows:
Push button
Keystroke Action
Moves up to the next highest digit (0,1,2,3,....,9). If held down
the digits scroll until the push button is released.
Up
Down
Moves down to the next lowest digit (9,8,7,6,….,0). If held down
the digits scroll until the push button is released.
Back
Moves the cursor to the left and deletes a digit. If the cursor is
already at the leftmost position, then the screen is exited
without changing the previously saved value.
Enter
Moves the cursor to the right. If the cursor is located at a blank
character position, the new value is saved.
NOTE: All numeric values are left-justified, and new values are
entered from left to right. A decimal point can be entered
after the first digit is entered, such that .9 is entered as 0.9.
NOTE: A few configuration items can have a negative value. In
this case, the leftmost position is reserved for the sign
(either “-“ for a negative value, or “+” for a positive value)
2.5.4.4 Increment/Decrement Digit Entry Mode
The Increment/Decrement Digit Entry Mode is used to
trim or revise some numeric values. An example is the
Trim Level screen in System Configuration which has a
default value of 0.0. When the Enter
key is pushed in
the Trim Level screen, a double headed arrow (¤) is shown
as the rightmost character of the LCD lower line. When
the (¤) is present, the value can be revised by using the
push buttons as follows:
Push button
12
Keystroke Action
Up
Increments the displayed value. If held down the digits scroll
until the push button is released. Depending on which screen is
being revised, the increment amount may increase by a factor
of 10 after the value has been incremented 10 times.
Down
Decrements the displayed value. If held down the digits scroll
until the push button is released. Depending on which screen is
being revised, the decrement amount may increase by a factor
of 10 after the value has been decremented 10 times.
Back
Returns to the previous menu without changing the original
value, which is immediately redisplayed.
Enter
Accepts the displayed value and returns to the previous menu.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.5 Password Protection (Default = 0)
The 355 transmitter can be password protected to restrict
access to certain portions of the menu structure that affect
the operation of the system. The default user password
installed in the 355 transmitter at the factory is 0, which
effectively disables the user password feature. This allows a
complete configuration to be done without entering a
password.
If desired, a new user password can be entered in Advanced
Configuration in the New Password screen. The password
can be changed to any numerical value up to 255. If the
password is changed from the factory default value of 0, then
the new password will be required whenever any configuration values are changed.
NOTE: If the password is not known, the menu item New Password in
Advanced Configuration displays an encrypted value representing the present password. Contact the factory with this
encrypted value to determine the actual password.
2.5.6 Configuration Menu Overview
Configuration of the Model 355 is performed by use of a
tree-like menu structure. The figure on the next page shows
an overview of the top level menu items.
2.5.7 Measured Values Menu
The Measured Values Menu (see page 15) contains all the
possible measured or calculated values that the 355 transmitter can display for level, volume, and open channel
flow applications. For simple level applications there are
many screens (such as Volume, Flow, Head, and the totalizers) that are not applicable and will show values of zero.
The Measured Values Menu is also used to add or remove
parameters from the Home Menu. The Home Menu appears
on the LCD after the 355 is powered up and has gone
through the 30 second initialization period. Home Menu
parameters are shown as 12-characters or less, and have asterisks on either side of the top line of the LCD. The Home
Menu parameters rotate at a 2-second interval on the LCD.
From the factory, the Home Menu will show the Level
value. To add or remove parameters from the Home Menu,
push the Enter
key. Use the Up
or Down
keys
to remove them (Off Main Disp) or add them (On Main
Disp) from the rotating Home Menu display. To exit the
Measured Values screen push the Back
key.
Any of the Measured Values screens can be left on the LCD
without returning to the rotating Home Menu. To return to
the rotating Home Menu, simply push the Back
key
twice.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
13
(2.5.6) Configuration Menu Overview
This Configuration Menu Overview shows the top level of the
Model 355 firmware. See the referenced pages for further information on each branch of the tree-like menu structure.
Measured Values
See Page 15
System Config
Volume Setup
See Page 18
Vessel Dims
See Page 18
Flow Setup
Gen Eqn Factors
See Page 23
I/O Config
See Page 18
See Page 26
4-20 mA Config
See Page 30
See Page 30
Totalizers
See Page 32
Advanced Config
See Page 34
Echo Profile
See Page 38
Diagnostics
See Page 41
Factory Config
See Page 45
Run Mode
14
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
(2.5.7) Measured Values Menu
START
ENT
DEL
Model 335 HT
Ver 1.0 A
Shown for
2 Seconds
UP / DN
UP / DN
DEL
*[Label]*
[String or Value]
UP/DN
ENT
DEL
Measured Values
to select
Rotating Screens
Volume
nnnn units
UP / DN
DEL
Flow
nnnn units
UP / DN
Status
[Fault or Warning]
UP / DN
Only shown if fault or warning
DEL
Level
nnnn units
System Config
to select
DEL
Head
nnnn units
UP / DN
UP / DN
DEL
IO Config
to select
DEL
Distance
nnnn units
UP / DN
DEL
ENT
% Output
nnn%
UP / DN
ENT
ENT
ENT
ENT
ENT
On Main Disp
Off Main Disp
UP / DN
DEL
Advanced Config
to select
DEL
Loop Current
nn.nn mA
ENT
ENT
UP / DN
UP / DN
DEL
Diagnostics
to select
DEL
Local Tag
Model 355
ENT
ENT
UP / DN
DEL
UP / DN
Temperature
nn.n units
ENT
ENT
UP / DN
DEL
Factory Config
to select
DEL
UP / DN
UP / DN
DEL
DEL
Totalizer R
nnnn units
Run Mode
to select
Totalizer NR
nnnn units
UP / DN
UP / DN
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
DEL
Custom Unit
nnnn units
15
2.5.8 System Configuration Menu
The System Configuration Menu shown below contains all the parameters that are needed to configure the
355 for level applications. This menu is also used for Volume & Level and Flow & Level configurations:
UP / DN
DEL
System Config
to select
UP / DN
ENT
DEL
UP / DN
Language
[selection]
ENT
DEL
English
Francais
Deutsch
Espanol
ENT
DEL
Level Only
Volume & Level
Flow & Level
ENT
DEL
Inches
Feet
Centimeters
Meters
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
ENT
DEL
None
3.6 mA
22 mA
Latch 3.6 mA
Latch 22 mA
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
ENT
DEL
[inc/dec]
in selected units
UP / DN
DEL
Measure Type
[selection]
UP / DN
DEL
Level Units
[selection]
UP / DN
DEL
Range
[entered value]
UP / DN
DEL
Blocking Dist
[entered value]
UP / DN
DEL
Safe Zone Fault
[selection]
UP / DN
DEL
Safe Zone Height
[entered value]
UP / DN
DEL
Level Offset
[entered value]
UP / DN
DEL
Trim Level
[entered value]
UP / DN
16
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.1 System Configuration Menu –
Level Applications
Blocking
Distance
Safe
Zone
Distance (measured)
Range
Level
(range - distance)
The System Configuration Menu on the opposite
page contains all the parameters that are needed to
configure the 355 for level applications. Additional
System Configuration parameters are used for volume (page 18) or open channel flow applications
(page 23). The following table provides an explanation of each of the System Configuration parameters for level applications.
Level Offset
Configuration Parameter
Explanation (Level Applications)
Language
The 355 can be configured in English (default value), French, German or Spanish.
Measure Type
The 355 can be configured as a Level Only (default value), Volume & Level, or Open
Channel Flow & Level transmitter.
Level Units
A selection of Inches (default value), Feet, Centimeters, or Meters is provided.
Should some other units of level be desired, the Custom Unit feature can be used in
the Advanced Configuration Menu.
Range
Range is defined as the distance from the face of the transducer to the bottom of the
tank for level applications. This distance needs to be measured accurately for proper
level indication. Factory default value is 240.0 inches.
Blocking Dist
The Blocking Distance is a “blind space” or “dead zone” immediately in front of the
transducer where level measurement cannot be made. The 355 defaults to a minimum Blocking Distance of 10" (250 mm). If needed, a larger value can be entered to
help ignore potential false echoes originating from the bottom rim of a nozzle, or
other objects close to the transducer.
Safe Zone Fault
Ultrasonic transmitters cannot reliably measure level if the liquid enters the Blocking
Distance. For this reason, a Safe Zone (see drawing above) can be configured in a
user-defined area just below the Blocking Distance. If desired, a Safe Zone Fault can
be set to ensure safe, reliable high-level readings in critical applications. Choices are
None (default value), 3.6 mA, 22 mA, Latch 3.6 mA, or Latch 22 mA. If Latch 3.6 mA
or Latch 22 mA is chosen, the loop current will remain in alarm until it is manually
cleared with the Safe Zone Alarm Reset located in the Diagnostics Menu.
Safe Zone Height
Safe Zone Height is entered as the distance just below the Blocking Distance that
establishes a Safe Zone. If the liquid level enters this zone the 355 will report the
chosen Safe Zone Fault. Factory default value is 2.0 inches.
Level Offset
A Level Offset (see drawing above) can be established at the bottom of the tank if
any obstructions (heating coils, mixing blades, angled bottoms, etc.) exist that have
the potential to create false level reflections. It is the distance from the bottom of the
tank to the lowest valid level reading. The 355 will not display any levels (on the LCD
or the mA loop) lower than the Level Offset value. Factory default value is 0.0".
Trim Level
Trim Level is an offset value (maximum of ± 10" or 25.4 cm) that can be used to force the
output the exact level. This should only be used after all parameters have been entered
correctly, and it has been confirmed that the transmitter is tracking the correct level target.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
17
2.5.8.2 System Configuration Menu –
Volume Applications
The level System Configuration parameters on pages 16 &
17 need to be entered before the volume configuration can
be done. Enter these parameters prior to starting the
volume configuration shown below.
UP / DN
Volume Setup
DEL
to select
UP / DN
ENT
DEL
UP / DN
Volume Units
[selection]
ENT
DEL
Cubic Feet
Cubic Inches
Gallons
Milliliters
Liters
ENT
DEL
Rectangular
Horizontal/Flat
Horiz./Ellip.
Horiz./Sphere.
Spherical
Vertical/Flat
Vertical/Ellip.
Vertical/Sphere
Vertical/Conical
Custom Table
UP / DN
DEL
Vessel Type
[selection]
UP / DN
DEL
©
Vessel Dims
to select
ENT
DEL
Radius
[entered value]
UP / DN
UP / DN
DEL
DEL
DEL
ENT
DEL
decimal entry
in selected units
Verti/Conical
only
Conical Height
[entered value]
UP / DN
decimal entry
in selected units
Verti/Ellip
only
Ellipse Height
[entered value]
UP / DN
ENT
DEL
ENT
DEL
decimal entry
in selected units
Rectangular
only
Width
[entered value]
ENT
DEL
decimal entry
in selected units
UP / DN Rectangular &
Horizontal
only
DEL
Length
[entered value]
UP / DN
DEL
ENT
DEL
decimal entry
in selected units
Horzi/Ellipse
only
Ellipse End
[entered value]
ENT
DEL
decimal entry
in selected units
UP / DN
ENT
DEL
Previous Menu
to select
UP / DN
18
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.2 System Configuration Menu –
Volume Applications (cont.)
The following table provides an explanation of each of the
System Configuration parameters for volume applications
that use one of the nine Vessel Types. See below and page
20 for dimensional information on all nine Vessel Types.
Configuration Parameter
Explanation (Volume Applications)
Volume Units
A selection of Gallons (factory default Volume Unit), Milliliters, Liters, Cubic
Feet, or Cubic Inches, is provided. Should some other units of volume be
desired, the Custom Unit feature can be used in the Advanced Configuration
Menu.
Vessel Type
Select either Vertical/Flat (factory default Vessel Type), Vertical/ Ellip.,
Vertical/Sphere, Vertical/Conical, Custom Table, Rectangular, Horizontal/Flat,
Horiz./Ellip., Horiz./Sphere, or Spherical.
Note: Vessel Dims is the next screen only if a specific Vessel Type was selected. If Custom Table was selected,
turn to page 21 & 22 to select the Cust Table Type and Cust Table Vals.
Vessel Dims
Depending on which Vessel Type was selected, the next few screens will allow
entry of the vessel dimensions. See the vessel drawings below and on page 20 for
proper dimensions.
Radius is used for all Vessel Types with the exception of Rectangular vessels.
Ellipse Height is only used for Vertical/Ellip vessels.
Conical Height is only used for Vertical/Conical vessels.
Width is only used for Rectangular vessels.
Length is only used for Rectangular and the three Horizontal vessels.
Ellipse End is only used for Horiz/Ellip vessels.
Previous Menu exits the Vessel Dims menu.
Length
Rad
Rad
Side View
HORIZONTAL/SPHERICAL
SPHERICAL
Vessel Types
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
19
Vessel Types
Rad
Rad
Side View
Side View
Ellipse Height
VERTICAL/ELLIPTICAL
Width
VERTICAL/SPHERICAL
Length
Rad
RECTANGULAR
Top View
VERTICAL/FLAT
Length
Rad
Side View
HORIZONTAL/FLAT
Rad
Length
End
Top View
Rad
Conical Height
Side View
HORIZONTAL/ELLIPTICAL
20
VERTICAL/CONICAL
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.2 System Configuration Menu –
Volume Applications (cont.)
If none of the nine Vessel Types from pages 19 & 20 can
be used, a Custom Table can be created. A maximum of
20 points can be used to establish the level to volume
relationship. The following table provides an explanation
of each of the System Configuration parameters for
volume applications where a Custom Table is needed.
UP / DN
UP / DN
Volume Setup
to select
ENT
DEL
Volume Units
[selection]
ENT
DEL
Cubic Feet
Cubic Inches
Gallons
Milliliters
Liters
UP / DN
UP / DN
DEL
Vessel Type
[selection]
ENT
DEL
Custom Table
UP / DN
DEL
Cust Table Type
[selection]
Rectangular
Horiz./Flat
Horiz./Ellip.
Horiz./Sphere
Spherical
Vertical/Flat
Vertical/Ellip.
Vertical/Sphere
Vertical/Conical
ENT
DEL
Linear
Spline
UP / DN
DEL
Cust Table Vals
nn Points
UP / DN
ENT
DEL
Previous Menu
to select
ENT
DEL
DEL
Point nn Level
[entered value]
ENT
ENT
Point nn Volume
[entered value]
UP / DN
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
21
2.5.8.2 System Configuration Menu –
Volume Applications (cont.)
The level System Configuration parameters on pages 16 &
17 need to be entered before the volume configuration can
be done. Enter these parameters prior to starting the
volume configuration shown below.
Configuration Parameter
Explanation (Custom Table Volume Applications)
Volume Units
A selection of Gallons (factory default Volume Unit), Milliliters, Liters, Cubic
Feet, or Cubic Inches, is provided. Should some other units of volume be
desired, the Custom Unit feature can be used in the Advanced Configuration
Menu.
Vessel Type
Select Custom Table if none of the nine Vessel Types can be used.
Note: Custom Table Type is the next screen only if a Custom Table was selected. If one of the nine Vessel Types
can be used, refer to page 19 to select the Vessel Type and Vessel Dims.
Cust Table Type
The Custom Table points can be a Linear (straight line between adjacent points) or
Spline (can be a curved line between points) relationship. See below drawing for
more information.
Cust Table Vals
A maximum of 20 points can be used in building the Custom Table. Each pair of
values will have a level (height) in the units chosen in the Level Units screen, and
the associated volume for that level point. The values must be monotonic, i.e.
each pair of values must be greater than the previous level/volume pair. The last
pair of values should have the highest level value (usually the Range value) and
the volume associated with that level in the vessel.
Previous Menu
Previous Menu exits the Custom Table menu.
P9
P8
P2
P7
P6
P5
Transition
point
P4
P3
P1
P1 P2
Use where walls are not perpendicular to base.
Concentrate at least two points at beginning (P1) and end (P9);
and three points at either side of transition points.
LINEAR
22
SPLINE
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications
Open channel flow is performed by using the 355 to
measure the level (Head) in a hydraulic structure. The
hydraulic structure is the primary measuring element, of
which the two most common types are weirs and flumes.
Since the primary element has a defined shape and dimensions, the rate of flow through the flume or over the weir is
related to the liquid level (Head) at a specified measurement location.
Model 355
Flow
Parshall
Flume
The Model 355 is the secondary measuring device, which
measures the height (Head) of the liquid in the flume or
weir. Open channel flow equations stored in the 355
firmware convert the measured Head into units of flow
(volume/time).
Open Channel Flow Measurement
Parshall Flume
NOTE: Proper position of the Model 355 should be per the
recommendation of the flume or weir manufacturer.
Blocking Distance
10" (250 mm) min.
Reference
Distance
Range
Model
355
Water Surface
Throat Section
Head
Flow
Flume (side view)
Range
10" (250 mm)
minimum
Blocking
Distance
Model
355
Water Surface
Crest
Reference
Distance
Head
Weir Plate
Channel Floor
Weir (side view)
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
23
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications (cont.)
The level System Configuration parameters on pages 16 &
17 need to be entered before the open channel flow
configuration can be done. Enter these parameters prior to
starting the open channel flow configuration shown below.
UP / DN
Flow Setup
DEL
to select
UP / DN
ENT
DEL
UP / DN
Flow Units
[selection]
ENT
DEL
UP / DN
DEL
Flow Element
[selection]
Cubic Ft/Second
Cubic Ft/Minute
Cubic Ft/Hour
Gallons/Minute
Gallons/Hour
Mil Gallons/Day
Liters/Second
Liters/Minute
Liters/Hour
CubicMeter/Hour
ENT
DEL
Palmer-Bwls
4", 6", 8", 10", 12", 15"
18", 21", 24", 27", 30"
V-Notch
22.5º, 30º, 45º, 60º,
90º, 120º
Parshall
1", 2", 3", 6", 9", 12",
18", 24", 36", 48", 60",
72", 96", 120", 144"
Rect with Ends
UP / DN
DEL
Crest Length
[entered value]
Rect w/o Ends
ENT
DEL
decimal entry
in selected units
Cipoletti
Generic Equation
Custom Table
UP / DN
DEL
Reference Dist
[entered value]
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
UP / DN
DEL
Maximum Head
[entered value]
UP / DN
DEL
Maximum Flow
[nnnn.n]
Note: Maximum Flow
is a read-only value.
UP / DN
DEL
Low Flow Cutoff
[entered value]
ENT
DEL
decimal entry
in selected units
UP / DN
Previous Menu
DEL
to select
UP / DN
24
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications (cont.)
The following table provides an explanation of each of the
System Configuration parameters for open channel flow
applications using one of the Flow Elements that are stored
in the firmware. See below and page 23 for dimensional
information on the flumes and weirs.
Configuration Parameter
Explanation (Open Channel Flow Applications)
Flow Units
A selection of Gallons/Minute (factory default Flow Unit), Gallons/Hour, Mil
Gallons/Day, Liters/Second, Liters/Minute, Liters/Hour, Cubic Meter/Hour,
Cubic Ft/Second, Cubic Ft/Minute, and Cubic Ft/Hour are provided. Should
some other units of flow be desired, the Custom Unit feature can be used in the
Advanced Configuration Menu.
Flow Element
Select one of the following primary Flow Elements that are stored in the firmware:
Parshall flume sizes of 1", 2", 3", 6", 9", 12", 18", 24", 36", 48", 60", 72", 96",
120" and 144". Palmer-Bwls (Palmer-Bowlus) flume sizes of 4", 6", 8", 10", 12",
15", 18", 21", 24", 27" and 30”. V-notch weir sizes of 22.5O, 30O, 45O, 60O, 90O and
120O. Rect with Ends (Rectangular Weir with End Contractions), Rect w/o Ends
(Rectangular Weir without End Contractions), and Cipoletti weir. Custom Table (see
page 28) can be selected if none of the stored Flow Elements can be used. The
table can be built with a maximum of 20 points. The 355 also has the capability of
inputting a Generic Equation (see page 26) for flow calculation.
Crest Length
The Crest Length screen only appears when the chosen Flow Element is Cipoletti
or one of the Rectangular weirs. Input this length in the user-selected level units.
Reference Dist
The Reference Distance is measured from the face of transducer to the point of
zero flow in the weir or flume. This must be measured very accurately in the userselected level units. For some Flow Elements, such as Parshall flumes, the
Reference Dist is the same as the Range value. Weirs and some other Flow
Elements will have a Reference Distance that is shorter than the Range value.
Maximum Head
Maximum Head is the highest liquid level (Head) value in the flume or weir before
the flow equation is no longer valid. The Maximum Head is expressed in the userselected Level Units. The 355 will default to the largest Maximum Head value that
is allowed for any given flume or weir. The Maximum Head value can be revised
depending on the value of the Reference Distance, or for end user preference.
Maximum Flow
Maximum Flow is a read-only value that represents the flow value corresponding
to the Maximum Head value for the flume or weir.
Low Flow Cutoff
The Low Flow Cutoff (in user-selected level units) will force the calculated flow
value to zero whenever the Head is below this point. This parameter will have a
default and minimum value of zero.
Previous Menu
Previous Menu exits the flow Open Channel Flow Config menu.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
25
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications (cont.)
The level System Configuration parameters on pages 16 & 17
need to be entered before the open channel flow configuration
can be done. Enter these parameters prior to starting the
open channel flow configuration shown below.
UP / DN
DEL
UP / DN
Flow Setup
to select
ENT
DEL
UP / DN
Flow Units
[selection]
ENT
DEL
UP / DN
DEL
Flow Element
[selection]
Cubic Ft/Second
Cubic Ft/Minute
Cubic Ft/Hour
Gallons/Minute
Gallons/Hour
Mil Gallons/Day
Liters/Second
Liters/Minute
Liters/Hour
CubicMeter/Hour
Palmer-Bwls
V-notch
Parshall
Rect with Ends
Rect w/o Ends
Cipoletti
Custom Table
ENT
DEL
Generic Equation
UP / DN
UP / DN
Gen Eqn Factors
to select
n
ENT
DEL
K(L-CH)H , K=
[entered value]
n
DEL
ENT
DEL
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
UP / DN
n
DEL
ENT
DEL
K(L-CH)H , C=
[entered value]
decimal entry
in selected units
UP / DN
UP / DN
n
DEL
Maximum Flow
[nnnn.n]
K(L-CH)H , n=
[entered value]
UP / DN
UP / DN
Previous Menu
DEL
Low Flow Cutoff
[entered value]
K(L-CH)H , L=
[entered value]
decimal entry
in selected units
UP / DN
Maximum Head
[entered value]
decimal entry
in selected units
UP / DN
UP / DN
Reference Dist
[entered value]
ENT
DEL
ENT
DEL
to select
decimal entry
in selected units
UP / DN
UP / DN
Previous Menu
to select
UP / DN
26
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications (cont.)
The following table provides an explanation of each of the
System Configuration parameters for open channel flow
applications using the Generic Equation.
Configuration Parameter
Explanation (Open Channel Flow Applications using the Generic Equation)
Flow Units
A selection of Gallons/Minute (factory default Flow Unit), Gallons/Hour,
Mil Gallons/Day, Liters/Second, Liters/Minute, Liters/Hour, Cubic Meter/Hour,
Cubic Ft/Second, Cubic Ft/Minute, and Cubic Ft/Hour are provided. Should
some other units of flow be desired, the Custom Unit feature can be used in the
Advanced Configuration Menu.
Flow Element
If none of the stored Flow Elements can be used, either a Custom Table can be
built with a maximum of 20 points, or a Generic Equation can be entered that
calculates the flow discharge rate.
Generic Eqn Factors
Generic Equation is a discharge flow equation in the form of Q = K(L-CH)Hn, where
Q = flow (Cu Ft/Second), H = Head (Feet), K = a constant, and L, C and n are user
input factors that depend on which Flow Element is being used. Make sure the flow
equation is in the form of Q = K(L-CH)Hn, and proceed to enter the values of K,L,C,H
and n. See example below.
Note: The Generic Equation parameters must be entered in Cu Ft/Second units. The resultant flow is
converted by the 355 into whatever Flow Units are selected above. See example below.
Reference Dist
The Reference Distance is measured from the face of the transducer to the point
of zero flow in the weir or flume. This must be measured very accurately in the
user-selected level units. For some Flow Elements, the Reference Dist is the same
as the Range value. Weirs and some other Flow Elements, will have a Reference
Distance that is shorter than the Range value.
Maximum Head
Maximum Head is the highest liquid level (Head) value in the flume or weir before
the flow equation is no longer valid. The Maximum Head is expressed in the userselected level units. The 355 will default to the largest Maximum Head value that
is allowed for any given flume or weir. The Maximum Head value can be revised
depending on the value of the Reference Distance, or for end user preference.
Maximum Flow
Maximum Flow is a read-only value that represents the flow value corresponding
to the Maximum Head value for the flume or weir.
Low Flow Cutoff
The Low Flow Cutoff (in user-selected level units) will force the calculated flow
value to zero whenever the Head is below this point. This parameter will have a
default and minimum value of zero.
Previous Menu
Previous Menu exits the flow Open Channel Flow Config menu.
Generic Equation Example (using equation for an 8' rectangular weir w/ end contractions)
Q = Cubic Ft/Second flow rate
L = 8' (weir crest length in feet)
H = Head value
K = 3.33 for Cubic Ft/Second units
C = 0.2 (constant)
n = 1.5 as an exponent
Using the factors above the equation becomes:
n
Q = K(L-CH)H
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
Q = 3.33 (8-0.2H) H1.5
The discharge flow value for a Head value of 3 feet becomes
128.04 Cubic Ft/Second. If GPM was selected for the Flow
Units, the 355 Measured Values screen would display this
value converted to 57,490 GPM.
27
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications (cont.)
The level System Configuration parameters on pages 16 & 17
need to be entered before the open channel flow configuration
can be done. Enter these parameters prior to starting the open
channel flow configuration shown below.
UP / DN
Flow Setup
to select
UP / DN
ENT
DEL
Flow Units
[selection]
ENT
DEL
UP / DN
UP / DN
DEL
Flow Element
[selection]
ENT
DEL
UP / DN
DEL
Cust Table Type
[selection]
ENT
DEL
Gallons/Minute
Gallons/Hour
Mil Gallons/Day
Liters/Second
Liters/Minute
Liters/Hour
CubicMeter/Hour
Cubic Ft/Second
Cubic Ft/Minute
Cubic Ft/Hour
Palmer-Bwls
V-notch
Parshall
Rect with Ends
Rect w/o Ends
Cipoletti
Generic Eqn
Custom Table
Linear
Spline
UP / DN
Reference Dist
[entered value]
ENT
DEL
decimal entry
in selected units
DEL
Cust Table Vals
nn Points
UP / DN
UP / DN
Maximum Head
[entered value]
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
ENT
DEL
DEL
Point nn Head
[entered value]
ENT
ENT
Point nn Flow
[entered value]
UP / DN
Maximum Flow
[nnnn.n]
UP / DN
Low Flow Cutoff
[entered value]
UP / DN
Previous Menu
to select
UP / DN
28
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.8.3 System Configuration Menu –
Open Channel Flow Applications (cont.)
Concentrate points as follows:
A. At least two points at beginning (P1 and P2);
B. At least two points at end (P9 and P10);
C. Three points at approximate average flow rate (for
example, P3, P4, P5); and at transition point (P7)
and points on either side (P6, P8).
The following table provides an explanation of each of
the System Configuration parameters for open channel
flow applications using the Custom Table.
P10
Transition
point
P9
P7
P8
P6
P5
P5
P4 Average flow rate
P3
P2
P4
SPLINE OR LINEAR
P1
P3
P2
SPLINE
Concentrate points along curve
P1
Configuration Parameter
Explanation (Open Channel Flow Applications using the Custom Table)
Flow Units
A selection of Gallons/Minute (factory default Flow Unit), Gallons/Hour,
Mil Gallons/Day, Liters/Second, Liters/Minute, Liters/Hour, Cubic Meters/Hour,
Cubic Ft/Second, Cubic Ft/Minute, and Cubic Ft/Hour are provided. Should
some other units of flow be desired, the Custom Unit feature can be used in the
Advanced Configuration Menu.
Flow Element
If none of the stored Flow Elements can be used, either a Custom Table can be
built with a maximum of 20 points, or a Generic Equation can be entered that
calculates the flow discharge rate.
Custom Table
The Custom Table points can be a Linear (straight line between adjacent points) or
Spline (can be a curved line between points) relationship. See above drawing for
more information.
Cust Table Vals
A maximum of 20 points can be used in building the Custom Table. Each pair of values will have a Head (height) in the units chosen in the Level Units screen, and the
associated flow for that Head value. The values must be monotonic, i.e., each pair
of values must be greater than the previous Head/flow pair. The last pair of values
should have the highest Head value (usually the Maximum Head value) and the flow
associated with that Head value.
Reference Dist
The Reference Distance is measured from the face of transducer to the point of
zero flow in the weir or flume. This must be measured very accurately in the userselected level units. For some Flow Elements, the Reference Dist is the same as
the Range value. Weirs and some other Flow Elements, will have a Reference
Distance that is shorter than the Range value.
Maximum Head
Maximum Head is the highest liquid level (Head) value in the flume or weir before
the flow equation is no longer valid. The Maximum Head is expressed in the userselected Level Units. The 355 will default to the largest Maximum Head value that
is allowed for any given flume or weir. The Maximum Head value can be revised
depending on the value of the Reference Distance, or for end user preference.
Maximum Flow
Maximum Flow is a read-only value that represents the flow value corresponding
to the Maximum Head value for the flume or weir.
Low Flow Cutoff
The Low Flow Cutoff (in user-selected level units) will force the calculated flow
value to zero whenever the Head is below this point. This parameter will have a
default and minimum value of zero.
Previous Menu
Previous Menu exits the flow Open Channel Flow Config menu.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
29
2.5.9 I/O Configuration Menu
The I/O Configuration Menu is used to set the 4-20 mA current loop values, the totalizer parameters,
and the HART polling address. The totalizer screens only appear if the unit is being configured for
open channel flow.
UP / DN
I/O Config
to select
UP / DN
ENT
DEL
4-20 mA Config
to select
UP / DN
ENT
DEL
UP / DN
Controlled By
[selection]
ENT
DEL
Level
Volume
Flow
ENT
DEL
decimal entry
in selected units
ENT
DEL
decimal entry
in selected units
ENT
DEL
22 mA
3.6 mA
Hold
UP / DN
DEL
4 mA Set Point
[entered value]
UP / DN
DEL
20 mA Set Point
[entered value]
UP / DN
DEL
System Fault
[selection]
UP / DN
DEL
Previous Menu
to select
UP / DN
DEL
DEL
Totalizers
to select
HART Poll Addr
[entered value]
ENT
DEL
ENT
DEL
Note: See page 32 for Totalizer configuration
[inc/dec]
0-15
UP / DN
DEL
Previous Menu
to select
UP / DN
30
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.9 I/O Configuration Menu (cont.)
The opposite page shows the I/O Configuration Menu that is
being used for configuring the 4-20 mA setpoints, and the
HART polling address. If the 355 is being used for open channel
flow, see pages 32 & 33 to configure totalizers.
Configuration Parameter
Explanation (4-20 mA Configuration)
Controlled By
The Controlled By screen sets which measurements (Level, Volume or Flow) will
control the mA loop output, and also determines which will be the Primary
Variable (PV). The Controlled By screen will not allow the existing value to be
changed to a new value that is inconsistent with the chosen Measure Type
(selected in the System Configuration Menu). It will revert to the original value in
such cases.
4 mA Set Point
Enter the desired value for the 4 mA Set Point in the measurement units selected
above in the Controlled By screen. Note that during normal operation the mA value
will never read into the Level Offset area that was configured on page 17.
20 mA Set Point
Enter the desired value for the 20 mA Set Point in the measurement units selected
above in the Controlled By screen. Note that during normal operation the mA value
will never read into the Blocking Distance area that was configured on page 17.
System Fault
Select 3.6 mA, 22 mA, or Hold (last value).
Previous Menu
Previous Menu exits the 4–20 mA Config menu.
Configuration Parameter
Explanation (Totalizers & HART Poll Address)
Totalizers
This screen will only appear if the 355 is being configured as an open channel
flow transmitter. See pages 32 & 33 for the totalizer configuration screens.
HART Poll Addr
Select a HART Poll Address from 0–15. Enter 0 for a single transmitter installation.
Enter 1–15 for a multi-drop network.
Previous Menu
Previous Menu exits the 4–20 mA Config menu.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
31
2.5.9 I/O Configuration Menu (cont.)
The I/O Configuration Menu screens below are used to configure the totalizers when the 355 is being
used for open channel flow.
UP / DN
ENT
DEL
Totalizers
to select
UP / DN
ENT
DEL
UP / DN
Totalizer Units
[selection]
ENT
DEL
Cubic Feet
Gallons
Mil Gallons
Liters
Mil Liters
Cubic Meters
ENT
DEL
1
10
100
1,000
10,000
100,000
ENT
DEL
Disabled
Enabled
ENT
DEL
1
10
100
1,000
10,000
100,000
ENT
DEL
Are you sure?
[selection]
UP / DN
DEL
Total NR Mult
[selection]
UP / DN
DEL
Totalizer NR
nn.nn e+mm units
UP / DN
DEL
Total NR Time
nnnnn.n hrs
UP / DN
DEL
Total R Mode
[selection]
UP / DN
DEL
Total R Mult
[selection]
UP / DN
DEL
Totalizer R
nn.nn e+mm units
UP / DN
DEL
Total R Time
nnnnn.n hrs
UP / DN
DEL
Totalizer R
Reset
UP / DN
Previous Menu
DEL
to select
ENT
DEL
YES
NO
UP / DN
32
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.9 I/O Configuration Menu (cont.)
The I/O Configuration Menu screens below are used to
configure the totalizers when the 355 is being used for open
channel flow.
Configuration Parameter
Explanation (NR & R Totalizers)
Totalizer Units
The Totalizer Units screen is for selection of the units for both the resettable and
non-resettable totalizers. Select Gallons (factory default unit) Mil Gallons, Liters,
Mil Liters, Cubic Meters, or Cubic Feet.
Total NR Mult
The Total NR Mult screen allows selection of the multiplier to be used for the nonresettable totalizer. The function of the totalizer multiplier is such that if the chosen
units are gallons and the multiplier is 100, the totalizer value will increment one
whole unit for each 100 gallons. Select 1, 10, 100, 1,000 (factory default multiplier),
10,000 or 100,000.
Totalizer NR
This is a read only screen that displays the present value of the non-resettable
totalizer.
Total NR Time
This is a read only screen that displays the time that has elapsed since the nonresettable totalizer has been totalizing flow.
Total R Mode
Total R Mode allows the user to enable and disable the resettable totalizer. The
default mode is disabled.
Total R Mult
The Total R Mult screen allows selection of the multiplier to be used for the resettable totalizer. The function of the totalizer multiplier is such that if the chosen
units are gallons and the multiplier is 100, the totalizer value will increment one
whole unit for each 100 gallons. Select 1, 10, 100, 1,000 (factory default multiplier),
10,000 or 100,000.
Totalizer R
This is a read-only screen that displays the present value of the resettable totalizer.
Total R Time
This is a read-only screen that displays the time that has elapsed since the resettable totalizer has been totalizing flow.
Totalizer R Reset
The Totalizer R Reset screen allows the user to reset the total flow and elapsed
time of Totalizer R to zero (Totalizer NR is non-resettable). Since this action will
permanently lose this data, a second chance is provided with an “Are you sure?”
screen.
Previous Menu
Previous Menu exits the Totalizer configuration.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
33
2.5.10 Advanced Configuration Menu
The Advanced Configuration Menu contains items that most users will not need to configure for typical
level, volume and flow applications. The figure below shows the first eight menu screens of the Advanced
Configuration Menu. Page 36 shows the last eight menu screens, and page 38 shows the Echo Profile
submenu.
UP / DN
UP / DN
Advanced Config
to select
ENT
DEL
Input Local Tag
[entered value]
ENT
DEL
alphanumeric entry
(12 chars)
ENT
DEL
[incr/dec]
1-60
ENT
DEL
[incr/dec]
1-300 seconds
ENT
DEL
22 mA
3.6 mA
Hold
ENT
DEL
[incr/dec]
ENT
DEL
[incr/dec]
ENT
DEL
alphanumeric entry
(3 chars)
ENT
DEL
decimal entry
in selected units
UP / DN
UP / DN
DEL
Damping
[entered value]
UP / DN
DEL
Echo Loss Delay
[entered value]
UP / DN
DEL
Echo Loss Fault
[selection]
UP / DN
DEL
Trim 4 mA
[value]
UP / DN
DEL
Trim 20 mA
[value]
UP / DN
DEL
Custom Unit Text
[entered value]
UP / DN
DEL
Custom Unit Mult
[entered value]
UP / DN
34
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.10 Advanced Configuration Menu (cont.)
The opposite page shows the first eight menu screens of the Advanced
Configuration Menu. The following table provides an explanation of
those parameters.
Configuration Parameter
Explanation
Input Local Tag
From the factory this tag is shown as “Model 355,” but this can be changed to
describe the vessel tag number, loop number, or anything else. The tag can contain a maximum of 12 characters. All upper and lower case letters, numbers and
29 other characters are provided for the tag.
Damping
Increasing the Damping value will smooth the 355 display and/or the loop output if
turbulence or other difficult application conditions are present. The default setting is
5, and this parameter can be set anywhere from 1–60.
Echo Loss Delay
Depending on the application, the 355 may temporarily lose the echo from the liquid surface. The Echo Loss Delay feature allows the transmitter additional time to
reacquire the echo and keep a stable loop output. The default setting is 30 seconds, and this parameter can be set anywhere from 1–300 seconds.
Echo Loss Fault
This is the value the loop will go to after the 355 has lost the echo and the echo loss
timer has expired. Select 22 mA (factory default value), 3.6 mA, or Hold (last value).
Trim 4 mA
This allows fine tuning of the 4 mA point. Since this is done at the factory, the
user should not need to trim this value. If desired, attach a meter to the output
and adjust the 5 digit value found in the Trim 4 mA screen until the meter reads
4.00 mA.
Trim 20 mA
This allows fine tuning of the 20 mA point. Since this is done at the factory, the
user should not need to trim this value. If desired, attach a meter to the output
and adjust the 5 digit value found in the Trim 20 mA screen until the meter reads
20.00 mA.
Custom Unit Text
The 355 has the capability to display a custom level, volume or flow unit if the user
desires a unit that is not in the transmitter firmware. This could be millimeters, barrels, cubic meters/day, or any other unit. Custom Unit Text allows a 3-character
abbreviation of the desired unit, which can be displayed along with the Custom Unit
value on the Home Menu. See example below.
Custom Unit Mult
This multiplier is used to derive the Custom Unit value that can be shown on the
Home Menu. The Custom Unit value is equal to the Primary Variable (selected via the
Controlled By screen in I/O Config) times the Custom Unit Mult. See example below.
Custom Unit Example (millimeters)
Controlled By (PV) = Level
Custom Unit Text = mm
If Level = 460.8 cm
Custom Unit Mult = 10.0
Custom Unit Value = 4608.00 mm
NOTE: The resolution of the Model 355 is not improved by the use of custom units. Refer to Performance
Specifications for expected resolution.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
35
2.5.10 Advanced Configuration Menu (cont.)
The Advanced Configuration Menu contains items that most users will not need to configure for typical
level, volume and flow applications. The figure below shows eight of the menu screens. The Echo Profile
submenu screens are detailed starting on page 38.
UP / DN
UP / DN
Advanced Config
to select
ENT
DEL
Echo Profile
to select
ENT
DEL
See page 38 for Echo Profile submenu
UP / DN
UP / DN
DEL
Target Algorithm
[selection]
ENT
DEL
Largest Amplitude
First Target
Amplitude/Dist
ENT
DEL
On
Fixed
ENT
DEL
[incr/dec]
in selected units
ENT
DEL
decimal entry
ENT
DEL
decimal entry
ENT
DEL
Are you sure?
[selection]
UP / DN
DEL
Temp Comp
[selection]
UP / DN
DEL
Temp Offset
[entered value]
UP / DN
DEL
Speed of Sound
[entered value]
UP / DN
DEL
New Password
[entered value]
UP / DN
DEL
Configuration
Reset
ENT
DEL
No
Yes
UP / DN
Previous Menu
DEL
to select
UP / DN
36
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.10 Advanced Configuration Menu (cont.)
The table below provides an explanation of the Advanced
Configuration Menu screens from the opposite page.
Configuration Parameter
Explanation
Echo Profile
The Echo Profile submenu screens are shown on the next page.
Target Algorithm
The 355 has the capability of operating under three different Target Algorithm
modes for acquiring the proper echo from the liquid surface. For almost all applications, the factory default of First Target is best for echo processing. Consult the factory for use of these algorithms.
Temp Comp
Since the speed of sound varies with temperature, the 355 provides temperature
compensation for the air space between the transducer and the liquid surface.
This Temp Comp feature should always be On. The Fixed mode should only be
used if the temperature sensor has been damaged. Consult the factory for use of
the Fixed mode.
Temp Offset
Temp Offset is used in conjunction with the Temp Comp feature. Consult the factory
for use of this parameter.
Speed of Sound
The Speed of Sound through air is 331.45 meters/second at 0º C. Ultrasonic
transmitters are generally not used in applications that have vapors other than air,
since stratified layers of vapors develop that have different speed of sound propagation rates. Exceptions to this are tanks that have a homogenous gas (e.g., nitrogen) blanket. Consult the factory for use of this parameter.
New Password
The default password is 0, which effectively disables the password feature. This
allows the configuration to be done without entering a password. If desired, a different password can be entered in the New Password screen. The password can
be changed to any numerical value up to 255. If the password is changed from
the factory default value of 0, then the new password will be required whenever
any configuration values are changed.
NOTE: If the password is not known, the New Password screen displays an encrypted value representing the
present password. Call the factory with this encrypted value to determine the actual password.
Configuration Reset
The Configuration Reset screen can be used if it is determined that the configuration
has been entered erroneously and it is desired to bring all configuration parameters
back to their default values. Consult the factory for use of this parameter.
Previous Menu
Previous Menu exits the Advanced Config menu.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
37
2.5.10 Advanced Configuration Menu (cont.)
The Advanced Configuration Menu contains items that most users will not need to configure for typical
level, volume and flow applications. The figure below shows the screens for the Echo Profile submenu, should
it be necessary to establish an echo rejection curve.
Processing
TTT
UP / DN
UP / DN
Echo Profile
to select
ENT
DEL
Echo List Mode
[selection]
Distance
Level
ENT
DEL
Any
Key
PROCESS ABORTED
Echo Too Strong
Any
Key
PROCESS ABORTED
Echo Too Close
UP / DN
UP / DN
DEL
No Echoes
UP / DN
DEL
Yes
Presented only when
no echoes exist.
No
Dist 1 Str XX
[value]
Save Echo Rej?
No/Yes
Echo screens are present
only when associated
UP / DN
echoes exist. Sorted in
order of ascending distance.
DEL
Dist 2 Str XX
[value]
ENT
No/DEL
Dist Correct?
No/Yes
UP / DN
DEL
Enter Distance
[entered value]
Level wil be displayed on screens
instead of Distance (or Dist) when
Echo List Mode is set to Level.
UP / DN
DEL
Saved Distance @
[value]
UP / DN
DEL
Echo Rej Status
[value]
ENT
DEL
None
Disabled
Enabled
UP / DN
Previous Menu
DEL
to select
UP / DN
38
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.10 Advanced Configuration Menu (cont.)
The table below provides an explanation of the Echo Profile submenu
screens shown on the opposite page. Two notes are worth pointing out:
1. If possible, the best answer to resolve issues deriving from false
echoes in the tank is to reposition the 355 in a different mounting where the false echoes are eliminated or reduced.
2. This submenu can also be used to simply view a list of existing
echoes (correct and/or false) for diagnostic purposes.
Configuration Parameter
Explanation (Echo Profile submenu)
Echo Profile
The Echo Profile submenu contains parameters that can be used to manage the
false target rejection functionality of the transmitter.
Echo List Mode
The Echo List Mode screen allows a selection of Distance (factory default) or Level.
This specifies whether the echoes presented in this submenu are in relation to their
Distance from the face of the transducer, or in terms of Level in the tank.
No Echoes
The No Echoes screen is only displayed when the 355 cannot detect any echoes
at all.
Note: The example below shows typical screens that might be presented if the Echo List Mode is Distance and
the Level Units are inches.
Dist 1
23.9 in
Dist 2
75.3 in
Dist 3
Str 45 If echoes are detected (correct and/or false) from one to nine echoes will be presented. The correct echo is usually the one that shows the highest Strength (Str)
value. In the example on the left, the first echo may be an obstruction in the ultraStr 70 sonic beam, the second echo is the correct one, and the third may be a secondary echo coming from the liquid surface.
Str 22
151.8 in
Enter Distance
If the correct echo is not listed, and it is still desired to create a new Echo
Rejection Curve, the exact liquid distance or level can be entered in the Enter
Distance (or Enter Level) screen.
Note: If no echoes are shown, it is advised to check the mounting location and to review the application, as
opposed to manually entering the distance or level in this screen.
Dist Correct?
If desired, a new Echo Rejection Curve can be established by pressing ENTER on
the echo screen that represents the current liquid distance or level. Upon pressing
ENTER the Dist Correct? Screen will be presented. A selection of Yes or No is
offered to make sure that the echo is the correct one.
Save Echo Rej?
If Yes was selected in the Dist Correct? screen, then the Save Echo Rej? screen
appears. This screen allows one more chance to abort creating a new Echo
Rejection Curve, if it has not been confirmed that the selected echo is the correct
echo from the liquid surface.
(Table continues on next page.)
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
39
2.5.10 Advanced Configuration Menu (cont.)
Configuration Parameter
Explanation (Echo Profile submenu)
Processing
If No is selected in Save Echo Rej?, the process is aborted and the transmitter
returns to the main Echo Profile submenu screen. If Yes is selected, and no errors
are detected, a “progress-bar” Processing screen is shown while the transmitter
processes, stores, and enables the new Echo Rejection Curve. It is not possible
to leave this screen until the Processing has been completed (this may take 30
seconds or longer). Once complete, the 355 returns to the main Echo Profile submenu screen. If an error occurs, “PROCESS ABORTED” will be displayed on the
upper line along with “Echo Too Close” or “Echo Too Strong” on the lower line.
This may indicate that the vessel is too full to process an Echo Rejection Curve.
Another Echo Rejection curve should be attempted after the level is reduced in
the vessel.
Saved Distance @
The Saved Distance/Level @ screen displays the distance (or level) at which the
existing Echo Rejection Curve was created. This screen is only presented when a
valid Echo Rejection Curve exists.
Echo Rej Status
The Echo Rej Status screen displays the current status (None, Disabled, or
Enabled) of the Echo Rejection Curve. The factory default value of None indicates
that an Echo Rejection Curve does not exist or was invalidated. Pressing ENTER
when the Echo Rej Status is None has no effect since it cannot be Enabled or
Disabled. If an Echo Rejection Curve has been created, then it can be Disabled
or Enabled by pressing ENTER. Selecting Disabled will disengage an existing
Echo Rejection Curve without affecting the stored profile. Once Disabled it is
possible to view false echoes and decide if it is necessary to run a new Echo
Rejection Curve.
Previous Menu
Previous Menu exits the Echo Profile submenu.
40
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.11 Diagnostics Menu
The Diagnostics Menu contains both informational items and diagnostic screens that can assist in
troubleshooting the 355 if faults or warnings occur.
UP / DN
UP / DN
Diagnostics
to select
ENT
DEL
Test 4-20 Loop
[current value]
ENT
DEL
[incr/dec]
Present current loop value is
shown in mA. The mA can be
incremented/decremented after
Enter is pressed.
ENT
DEL
Reset?
[selection]
ENT
DEL
No
Yes
ENT
DEL
Reset?
[selection]
ENT
DEL
No
Yes
UP / DN
UP / DN
DEL
Echo Strength
[value]
UP / DN
DEL
Number of Echoes
[value]
UP / DN
DEL
Echo Missing
[value] sec
UP / DN
DEL
Echo Rej Warning
Reset
UP / DN
DEL
Safe Zone Alarm
Reset
UP / DN
DEL
Max Temperature
[max value]
UP / DN
DEL
Min Temperature
[min value]
UP / DN
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
41
2.5.11 Diagnostics Menu (cont.)
The table below provides an explanation of the first eight items in the
Diagnostics Menu. The remaining screens of the Diagnostic Menu are
shown on the next page.
Configuration Parameter
Explanation
Test 4-20 Loop
This screen allows any value from 3.6 to 22.0 mA to be entered to test the loop
output.
Echo Strength
This parameter is an indication of the relative strength of the echo identified as the
correct echo coming from the target or liquid surface. The Echo Strength value
varies from 0 (echo loss) to 100.
Number of Echos
The 355 can process as many as 9 echos at a time and still keep track of the
correct echo from the liquid surface. This parameter shows the Number of Echos
the transmitter is detecting.
Echo Missing
The 355 can lose the echo for as long as the Echo Loss Delay period that is set in
Advanced Configuration prior to going into the Echo Loss Fault condition. The
Echo Missing screen shows how many seconds have passed since the echo has
been lost.
Echo Rej Warning
Reset
A warning message will be displayed on the Home Menu screen if a non-volatile
memory exception has corrupted the Echo Rejection Curve, or if this curve has
been invalidated. The curve can become invalidated if one of the key configuration parameters was changed after the curve was set up. This Echo Rej Warning
Reset screen allows a reset of this warning message, so that it can be removed
from the Home Menu. A new Echo Rejection Curve should be run and saved.
Safe Zone Alarm
Reset
If liquid level enters the Safe Zone Height (see System Configuration) and the Safe
Zone Fault has been set to either 3.6 mA, 22 mA, Latch 3.6 mA or Latch 22 mA
then “SafeZoneAlrm” will be displayed on the LCD. Once liquid level has dropped
below Safe Zone Height, the alarm will clear unless the Latch feature has been
selected. The Safe Zone Alarm Reset screen allows this latching to be reset after
the liquid level has fallen out of the Safe Zone Height area.
Max Temperature
This parameter displays the maximum transducer temperature ever recorded.
Min Temperature
This parameter displays the minimum transducer temperature ever recorded.
42
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.11 Diagnostics Menu (cont.)
The Diagnostics Menu contains both informational items and diagnostic screens that can assist in
troubleshooting the 355 if faults or warnings occur.
ENT
DEL
UP / DN
UP / DN
Diagnostics
to select
ENT
DEL
History
[current status]
Previous Menu
to select
UP / DN
ENT
DEL
Event nn
[diagnostic Text]
ENT
DEL
Event nn Occurred
xxxx.x hrs
UP / DN
UP / DN
UP / DN
DEL
Run Time
xxxx.x hrs
Run-time since last
power-up. Zeroed when
History is reset.
ENT
DEL
Event nn Duration
xxxx.x hrs
UP / DN
DEL
History
Reset
ENT
DEL
Reset?
[selection]
ENT
DEL
No
Yes
UP / DN
DEL
Magnetrol S/N
[value]
UP / DN
DEL
Model 355 HT
Ver 1.0 A
UP / DN
Previous Menu
DEL
to select
UP / DN
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
43
2.5.11 Diagnostics Menu (cont.)
The table below provides an explanation of the remaining screens of
the Diagnostic Menu.
Configuration Parameter
Explanation
History
The History screen displays the present status and the sequence in which any
diagnostic events may have occurred. The 2nd 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
descends to a lower
menu level to view diagnostic 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. Up to
10 events can be stored in the History submenu. It is also possible to display the
relative time of occurrence and the duration of each event. This is done with a
third menu level displayed by pressing
again.
Run Time
The Run Time screen shows how much time has elapsed since the 355 transmitter
has been powered up.
History Reset
The History Reset screen provides a means to clear all of the diagnostics events
that are stored in the History log.
Magnetrol S/N
This read-only screen displays the serial number of the unit.
Model 355 HT
Ver 1.0a
If the “HT” is shown on the top line of this read only screen, the 355 has HART digital communications capability. If “NP” (No Protocol) is shown on the top line, then
the transmitter does not have HART. The bottom line displays the firmware version.
Previous Menu
Previous Menu exits the Diagnostic Menu.
44
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.5.12 Factory Configuration Menu
The Factory Configuration Menu contains items that cannot be configured without assistance from the
factory. Contact the factory if any of these parameters need to be modified.
UP / DN
UP / DN
Factory Config
to select
ENT
DEL
Peak Threshold
[entered value]
UP / DN
UP / DN
DEL
# Run Average
[selection]
UP / DN
DEL
TVG
[selection]
UP / DN
DEL
NSP Value
[entered value]
UP / DN
DEL
Factory
Reset
UP / DN
DEL
HART Device ID
[entered value]
UP / DN
Previous Menu
DEL
to select
UP / DN
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
45
2.6
Configuration Using HART®
A HART® (Highway Addressable Remote Transducer) remote
unit, such as a HART communicator, can be used to provide a
communication link to the Model 355 transmitter.
When connected to the control loop, the same system measurement readings that are shown on the transmitter are shown on
the communicator. The communicator can also be used to configure the transmitter.
To confirm HART handheld communications, attach the unit
as shown in the figure on the left. If the communicator reads
GENERIC on the first two lines, then the HART handheld
does not contain the current DDs (Device Descriptions) for
the 355 transmitter. Contact your local HART Service Center
and specify a Magnetrol Echotel Model 355 Device Description.
HART Revision Table
Junction
HART Version
HCF Release Date
Compatible with 355 Software
Dev V1 DD V2
September 2008
Version 1.0a and later
2.6.1 Connections
R L > 250 Ω
Control
Room
Display
Power
Supply
Current
Meter
-
+
A HART communicator can be operated from a remote
location by connecting it to a remote junction or by connecting it directly to the terminal block in the electronics
housing of the 355 transmitter.
HART uses the Bell 202 frequency shift key technique of
high-frequency digital signals. It operates on the 4–20 mA
loop and requires 250 Ω load resistance. A typical connection between a communicator and the 355 transmitter is
shown at the left.
2.6.2 Display Menu
A typical communicator display is an 8-line by 21-character LCD. When connected, the top line of each menu displays the model (Model 355) and its tag number or
address. Usually the bottom line of each menu is reserved
for software defined function keys (F1–F4). For detailed
operating information, refer to the instruction manual provided with the HART communicator.
The 355 transmitter online menu trees are shown in the following pages. Open the menu by pressing the alphanumeric
key 1, Device Setup, to display the second level menu.
46
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.6.3 HART Menu
1
2
3
4
5
G
Device Setup
PV
% Output
Loop Current
Device Variables
1 System
Configuration
G
1 Measurement
Type
2 Level Units
3 Range
4 Blocking
Distance
5 Safe Zone Fault
6 Safe Zone
Height
7 Level Offset
8 Trim Level
9 Flow Setup
10 Volume Setup
G
1
2
3
4
5
6
7
8
Flow Units
Flow Element
Crest Length
Reference
Distance
Maximum Flow
Maximum Head
Low Flow Cutoff
Generic Equation
Factors
Flow Custom
Table
G
9
G
G
1 Volume Units
2 Vessel Type
3 Vessel
Dimensions
4 Volume
Custom Table
G
2 I/O
Configuration
1 SV is
2 TV is
3 4V is
G
1 PV is
2 Variable
Selection
3 4-20mA
Setpoints
4 System Fault
5 Poll Address
6 Totalizers
G
G
G
3 Advanced
Configuration
G
G
4 Diagnostics
5 Factory
Configuration
6 Device
Description
7 Review
8 Date/Time/Initials
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Local Tag
Damping
Echo Loss Delay
Echo Loss Fault
Trim Loop Current
Custom Unit Text
Custom Unit Multiplier
Echo Profile
Enter Password
Target Algorithm
Temperature
Compensation Mode
Temperature Offset
Speed of Sound
New User Password
Reset Configuration
1 PV 4mA
Set Point
2 PV 20mA
Set Point
1
2
3
4
5
K
L
C
n
Flow=K(L-CH)
H^n where
H = Head
1 Table Type
2 Table Length
3 Pt 01 Head
4 Pt 01 Flow
…..
41 Pt 20 Head
42 Pt 20 Flow
1
2
3
4
5
6
Vessel Radius
Ellipse Height
Conical Height
Vessel Width
Vessel Length
Ellipse End
1 Table Type
2 Table Length
3 Pt 01 Level
4 Pt 01 Volume
…..
43 Pt 20 Level
44 Pt 20 Volume
1 Totalizer Units
2 NR Totalizer
Multiplier
3 NR Totalizer
4 NR Totalizer
Time
5 R Totalizer Mode
6 R Totalizer
Multiplier
7 R Totalizer
8 R Totalizer Time
9 Reset Totalizer
G
1 Echo List Mode
2 Refresh Echo List
3 Echo 1 Location
4 Echo 1 Strength
5 Echo 2 Location
6 Echo 2 Strength
…..
19 Echo 9 Location
20 Echo 9 Strength
21 Saved Media Location
22 Echo Rejection Status
23 New Echo
Rejection Profile
47
2.6.3 HART Menu (cont.)
1
2
3
4
5
G
Device Setup
PV
% Output
Loop Current
Device Variables
1 System
Configuration
2 I/O
Configuration
3 Advanced
Configuration
4 Diagnostics
G
5 Factory
Configuration
G
1 Loop Test
2 Echo Strength
3 Number of
Echoes
4 Echo Missing
5 Reset Echo
Rejection
Warning
6 Reset Safe
Zone Alarm
7 Temperature
8 Max
Temperature
9 Min
Temperature
10 Reset
Temperatures
11 Firmware
Version
12 Status History
13 Present Status
1 View History
2 Reset History
G
G
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
System params default
Adv Cfg params default
I/O params default
Fact Cfg params default
HART params default
Custm Tbl params dflt
Totalizer params default
Configuration Conflict
Hardware Failure
Loop Failure
Temperature Failure
Blocking Distance
High Volume Alarm
High Flow Alarm
Safe Zone Alarm
Echo Lost
G
1 Faults
2 Warnings
6 Device
Description
G
7 Review
8 Date/Time/Initials
48
1
2
3
4
5
6
7
8
Enter Password
Peak Threshold
# Run Average
TVG
Factory Param 1
Factory Param 2
NSP Value
Reset Factory
Defaults
G
1
2
3
4
5
6
Warning 1
Low VDC 20mA
Noise
Hi Temperature
Lo Temperature
Echo Rejection
Profile Corrupt
7 Echo Rejection
Profile Invalid
8 Initializing
9 System Warning
1
2
3
4
5
6
Tag
Magnetrol S/N
Descriptor
Date
Message
Final
asmbly num
7 Device ID
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
2.6.3 HART Menu (cont.)
1
2
3
4
5
G
Device Setup
PV
% Output
Loop Current
Device Variables
1 System
Configuration
G
2 I/O
Configuration
3 Advanced
Configuration
4 Diagnostics
5 Factory
Configuration
6 Device
Description
7 Review
G
8 Date/Time/Initials
1
2
3
4
5
6
7
8
9
Level
Volume
Flow
Head
Distance
NR Totalizer
R Totalizer
Transducer Temp
Custom Unit
1 Model
2 Manufacturer
3 Magnetrol S/N
4 Firmware Version
5 Tag
6 Descriptor
7 Date
8 Message
9 Local Tag
10 Date/Time/Initials
11 Final asmbly num
12 Device ID
13Poll Address
14 Universal rev
15 Fld Dev rev
16 Software rev
17 Num req preams
18 Measurement Type
19 Level Units
20 Range
21 Level Offset
22 Blocking Distance
23 Trim Level
24 Volume Units
25 Vessel Type
26 Vessel Radius
27 Ellipse Height
3.0
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Conical Height
Vessel Width
Vessel Length
Ellipse End
Flow Units
Flow Element
Crest Length
Reference Distance
Maximum Flow
Maximum Head
Low Flow Cutoff
K
L
C
n
PV is
SV is
TV is
4V is
PV 4mA
Set Point
PV 20mA
Set Point
PV Min Span
4 mA Trim Value
20mA Trim Value
System Fault
53 Totalizer Units
54 NR Totalizer
Multiplier
55 R Totalizer Mode
56 R Totalizer
Multiplier
57 Damping
58 Safe Zone Fault
59 Safe Zone Height
60 Echo Loss Delay
61 Echo Loss Fault
62 Custom Unit Text
63 Custom Unit
Multiplier
64 Target Algorithm
65 Temperature
Compensation Mode
66 Temperature Offset
67 Speed of Sound
68 Echo List Mode
69 Echo
Rejection Status
70 Peak Threshold
71 # Run Average
72 TVG
73 Factory Parameter 1
74 Factory Parameter 2
Reference Information
This section contains information on troubleshooting,
agency approvals, spare parts, and detailed physical, functional and performance specifications.
3.1
Troubleshooting
The Model 355 transmitter is designed and engineered for
trouble-free operation over a wide range of operating conditions. Common transmitter problems are discussed in terms
of their symptoms and recommended corrective actions.
WARNING! Explosion hazard. Do not remove the 355 housing cover
unless power has been switched off or the area is known
to be nonhazardous. Use of the included PACTware™ PC
program is highly recommended and invaluable for troubleshooting and advanced configuration. A HART RS232
or USB modem (purchased separately) is required. See
Magnetrol PACTware™ bulletin 59-101.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
49
3.1.1 Troubleshooting System Problems
Symptom
Problem
Solution
Level reading locked onto a
value that is not correct level
Measurement engine finding a
reflection it believes is the
correct level signal
Run an Echo Rejection Curve with the Level below
this point (or with empty tank) to eliminate false
echoes
LEVEL, % Output and LOOP
values are all inaccurate
Basic configuration data may be
questionable
1. Check validity of all configuration data
2. Check DISTANCE value of device against
manually measured distance
LEVEL readings are repeatable but
consistently high (or low) from
actual by a fixed amount
Configuration data does not
accurately match tank
dimensions
1. Ensure proper values for Range
2. Check vessel for present liquid level. Trim Level
can be used to ensure exact measurement
3. Reconfigure LOOP values if necessary
LEVEL reading on Display is correct but LOOP is stuck at 4 mA
HART Poll Address set a
value of 1-15
Set HART Poll Address to 0
LEVEL reading on Display
stuck at value related to
Blocking Distance
The 355 believes the transducer
is flooded (level very near or on
transducer)
Check actual level. If transducer is not flooded, power
down, then power-up transmitter with the level well
below the transducer. Increase the Blocking Distance.
3.1.2 Error Messages
The Echotel 355 transmitter utilizes a 3-level hierarchy for
reporting diagnostic conditions: FAULTS, WARNINGS,
and INFORMATION. Faults and Warnings can be
reviewed in the rotating screens in the Home menu. These
screens capture only current conditions. Historical diagnostic information can be viewed at the HISTORY screen in
the Diagnostic Menu.
FAULT: The highest level in the hierarchy of diagnostics. A
Fault annunciates a defect or failure in the circuitry or software that makes reliable measurement impossible. The current (mA) value unit defaults to 3.6, 22, or HOLD and a
message is displayed on the rotating screen. Further error
information can be obtained by reviewing the Diagnostic
Menu screens.
WARNING (MESSAGE): This is the second level in the
hierarchy of diagnostics. A Warning annunciates conditions
that are not fatal but may affect measurement. A message
will occur on the Home (rotating) screen when a Warning is
detected but will not affect output current. Further error
information can be obtained by reviewing the Diagnostic
Menu screens.
INFORMATION (MESSAGE): This is the lowest level in
the hierarchy of diagnostics. Information messages are for
conditions that provide operational factors that are not critical to measurement. Further error information can be
obtained by reviewing the Diagnostic Menu screens.
50
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
3.1.2 Error Messages
Diagnostic
Fault Description
LCD Message
Non-Volatile
a) System Config parameters defaulted
Memory Exceptions b) Advanced Config parameters defaulted
c) I/O Config parameters defaulted
d) Factory Config parameters defaulted
e) HART parameters defaulted
f) Strapping Table parameters defaulted
g) Totalizer parameters defaulted
DfltParm Sys
DfltParm Adv
Dflt Parm I/O
DfltParmFact
DfltParmHART
DfltCustmTbl
DfltParm Tot
I/O Configuration
Measurement Type and Loop Controlled By selections are incompatible
(e.g., Flow selected for control but is not being calculated).
CnfgConflict
Hardware Failure
The "HardwareFail" fault will be indicated if there is a hardware failure.
Contact the factory for assistance.
HardwareFail
Loop Failure
The actual current generated in the 4–20 mA loop differs significantly
(>1 mA) from the intended loop current.
Loop Failure
Temperature
Sensor Failure
A short or open in the connection to the temperature sensor.
Temp Failure
Block Dist
Elevated signals are impinging on the Blocking Distance point. This may
or may not be caused by excessive ringing of the transducer.
Block Dist
High Volume/Flow
Alarm
The measured level exceeds the highest level in the strapping table by
more than 5%, or the applicable range of the equations / data sets
involved.
HiVolumeAlrm
Hi Flow Alrm
Safe Zone Alarm
The level has risen to within the configured Safe Zone region in the tank.
SafeZoneAlrm
Echo Lost
No valid echo from the liquid surface has been received for a period
exceeding the Echo Loss Delay.
Echo Lost
Diagnostic
Warning Description
LCD Message
Low Loop Voltage
The transmitter’s minimum voltage requirement may not be met when the
loop is driven to 22.0 mA.
LowVDC@20mA
Noise
Spurious signals similar in magnitude to echoes are detected.
Noise
Temp Limits
Exceeded
The transducer temperature exceeds +80°C or –40°C.
High Temp
Low Temp
Corrupt Echo
Rejection Partition
Non-Volatile Memory exception for Echo Rejection partition.
EchoRej Crpt
Invalid Echo
Rejection Curve
A stored Echo Rejection Curve has been invalidated (usually because a
key configuration parameter was changed).
EchoRej Invl
Initial Startup
Displayed during “warm-up” period.
Initializing
Diagnostic
Diagnostic Information Description
LCD Message
Echo Strength
A numerical indication of the relative strength of the echo identified as the Echo Strength xx
liquid surface.
Number of Echos
The number of echoes detected.
Number of Echos
Echo Missing
The duration (in seconds) that echoes have been missing.
Echo Missing xx sec
Temperature
Extrema
Maximum and minimum measured temperatures will be stored in nonvolatile memory, resettable only by the factory.
Min Temp xxx °F/C
Max Temp xxx °F/C
Echo Profile
A means to display the attributes of all the echos detected in the
receive signal.
Refer to Advanced Config
Menu
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
51
3.2
Beam spread
interference
Beam spread
interference
Vapors
Foam
Surface
agitation
Measurement Range Calculations
Ultrasonic non-contact transmitters are typically rated for
a maximum range in ideal conditions. Experience has
shown that maximum range must be reduced for certain
factors. Although the maximum range rating is somewhat
conservative, each application must be evaluated for specific
conditions in the tank.
Several application parameters that affect ultrasonic
performance are shown in the tank at the left. Each of
these parameters is assigned a Performance Multiplier in
the chart below. Multiply the maximum potential range
(20 feet or 6 meters) of the Model 355 by each of the
applicable Performance Multipliers to calculate the maximum allowable range for the application.
Operating parameter
SURFACE AGITATION: Surface agitation or waves can degrade the
performance. Moderate agitation results in only slight degradation of
performance. The worst case is when the surface is a good reflector, but
in the wrong direction.
VAPORS AND STEAM: Vapors can cause problems when the liquid
process temperature is well above the temperature of the airspace. The
greater the difference, the more expected vapor problems. The problems
result from condensation or layering in the sound path, both of which
attenuate the sound signal, and degrade performance. If a vent is used,
be sure that it is well away from the transducer.
BEAM SPREAD INTERFERENCE: It is recommended that no
obstructions, such as ladder rungs, fill pipes, support struts, etc., be
allowed within the 10° ultrasonic beam. If an obstruction is unavoidable,
make it as far away as possible from the transducer. Interference from
agitator blades is only an intermittent interference that usually has little
effect on performance. A special software algorithm can also help
suppress false echoes from agitator blades that are within the beam angle.
FOAM: Foam can attenuate the ultrasound and render the system
inoperative. If possible, moving the transducer to an area in the tank
where there is less foam will improve the performance. Thick,
heavy-density foams can sometimes produce a reflection from the top
of the foam.
Performance
Condition
Multiplier
Smooth, glass-like surface . . . . . . . . . . . . . . . . . . . . .1.0
Slight agitation, choppiness . . . . . . . . . . . . . . . . . . .0.9
Heavy agitation . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.8
Slight vortex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.7
No condensation . . . . . . . . . . . . . . . . . . . . . . . . . . .1.0
Little condensation . . . . . . . . . . . . . . . . . . . . . . . . . .0.9
Much condensation / foggy appearance . . . . . . . . . .0.8
No interference within 5° half beam angle . . . . . . . .1.0
Agitator at speed less than 60 RPM . . . . . . . . . . . . .1.0
Agitator at speed greater than 60 RPM . . . . . . . .C/F
Interference outside 2°, . . . . . . . . . . . . . . . . . . . . . .0.8
far from transducer (in bottom third of range)
Interference outside 2°, . . . . . . . . . . . . . . . . . . . . . .0.5
near to transducer (in top third of range)
No foam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.0
Light froth, less than 0.25" thick . . . . . . . . . . . . . . .0.8
Light foam, less than 0.5" thick . . . . . . . . . . . . . . . .0.5
Light foam, more than 1" thick . . . . . . . . . . . . . . . .0.1
EXAMPLE: A slightly agitated 12-foot tank with no condensation, no interference, and a light froth on the surface.
Maximum allowable range: 20' × 0.9 × 1.0 × 1.0 × 0.8 = 14.4 feet
Since the maximum allowable range is 14.4 feet, the 355 is suitable for this 12-foot tank.
NOTE: The multipliers shown above are general guidelines.
For further assistance consult the factory.
52
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
3.3
Speed of Sound Through Gases
The speed of sound through air is 331.45 meters/sec (1,087
feet/sec) at 0° C (+32° F) as indicated in Section 2.5.10. This
speed is the basis for all measurements made by the Model
355 transmitter. The table below contains the speed of sound
for various gases measured @ +32° F (0° C). These values
can be used to alter the speed of sound value in Section
2.5.10. This should only be done if the gas exists as a
homogeneous layer (such as a nitrogen blanket) in the tank.
Gases
Argon
Carbon monoxide
Methane
Methanol
Neon
Nitrogen
Nitrous oxide
Oxygen
Propane
3.4
Chemical Formula
Ar
CO
CH4
CH3OH
Ne
N2
N2O
O2
C3H8
Velocity (m/s)
307
337
433
335
435
334
263
316
235
Parts
3.4.1 Replacement Parts
Replacement Cover, Electronics Module and O-Ring
1
2
Item
1
1
2
2
2
2
3
3
Description
Cast aluminum housing cover
Lexan housing cover
Electronic module without HART for aluminum housing
Electronic module without HART for Lexan housing
Electronic module with HART for aluminum housing
Electronic module with HART for Lexan housing
Cast aluminum housing O-ring
Lexan housing O-ring
Part Number
036-4410-010
003-1226-003
089-9125-001
089-9125-002
089-9125-003
089-9125-004
012-2201-237
012-2616-001
Transducer Replacement Kit with Cast Aluminum Housing Base
3
4
Item
4
4
4
4
4
4
4
4
4
4
Description
FM I.S. & N.I. approvals, ¾" NPT conduits, Polypropylene transducer
FM I.S. & N.I. approvals, ¾" NPT conduits, Kynar Flex® transducer
FM I.S. & N.I. approvals, M20 conduits, Polypropylene transducer
FM I.S. & N.I. approvals, M20 conduits, Kynar Flex transducer
ATEX I.S. approvals, ¾" NPT conduits, Polypropylene transducer
ATEX I.S. approvals, ¾" NPT conduits, Kynar Flex transducer
ATEX I.S. approvals, M20 conduits, Polypropylene transducer
ATEX I.S. approvals, M20 conduits, Kynar Flex transducer
ATEX XP approvals, ¾" NPT conduits, Polypropylene transducer
ATEX XP approvals, M20 conduits, Kynar Flex transducer
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
Part Number
089-9126-001
089-9126-002
089-9126-003
089-9126-004
089-9126-007
089-9126-008
089-9126-009
089-9126-010
089-9126-011
089-9126-012
53
3.4.1 Replacement Parts (cont.)
Transducer Replacement Kit with Lexan (Plastic) Housing Base
Item
4
4
4
4
4
4
4
4
Description
FM I.S. & N.I. approvals, ¾" NPT conduits, polypropylene transducer
FM I.S. & N.I. approvals, ¾" NPT conduits, Kynar Flex transducer
FM I.S. & N.I. approvals, M20 conduits, polypropylene transducer
FM I.S. & N.I. approvals, M20 conduits, Kynar Flex transducer
ATEX I.S. approvals, ¾" NPT conduits, Polypropylene transducer
ATEX I.S. approvals, ¾" NPT conduits, Kynar Flex transducer
ATEX I.S. approvals, M20 conduits, Polypropylene transducer
ATEX I.S. approvals, M20 conduits, Kynar Flex transducer
Part Number
089-9126-013
089-9126-014
089-9126-015
089-9126-016
089-9126-017
089-9126-018
089-9126-019
089-9126-020
3.4.2 Recommended Spare Parts
Description
Electronic module per Section 3.4.1
Transducer replacement kit per Section 3.4.1
3.5
Agency Approvals
AGENCY
FM
ATEX
MODEL
PROTECTION METHOD
AREA CLASSIFICATION
355-5X0A-11R
355-5X0A-10R
Intrinsically Safe
355-5X0A-1XX
Intrinsically Safe
355-5X0A-1XX
Non-Incendive Œ
355-5X0A-AXX
Intrinsically Safe
355-5X0A-C0R
355-5X0A-C1R
Explosion Proof
Class I, Div. 1; Groups A, B, C, & D
Type 4X, IP66, T4 @80°C 
Entity
Class I, Div. 1; Groups A, B, C, & D
IP67, T4 @80°C 
Entity
Class I, Div. 2; Groups A, B, C, & D
IP67, T4 @80°C 
ATEX II 1 G Ex ia IIC T4 @70°C
ISSeP09ATEX013X
(EN 60079-0, EN 60079-11
& EN 60079-26 standards applied)
ATEX II 1/2 G Ex ma/d IIC T6 @70°C Ga/Gb
ISSeP09ATEX009X Ž (EN 60079-0,
EN 60079-1, EN 60079-18 & EN 60079-26
standards applied)
ΠMeasured media inside vessel must be non-flammable only.
 Process temperature must not increase the internal
temperature of the electronics above 176° F (80° C).
Ž Refer to Section 2.3 for special Conditions for Safe Use
54
Part Number
089-9125-00X
089-9126-0XX
These units have been tested to
EN 61326 and are in compliance with
the EMC Directive 2004/108/EC.
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
3.5.1 Agency (FM/FMc) Drawing and Entity Parameters
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
55
3.6
Specifications
3.6.1 Transmitter
Supply Voltage
XP & GP 16 to 36 VDC
IS 16 to 28.6 VDC
IS Entity Parameters
FM/FMc Vmax = 28.6 V, Imax = 140 mA
Pmax = 1.0 W, Ci = 5.5 nF, Li = 9.4 µH
ATEX Ui = 28.4 V, li = 94 mA, Pi = 0.67 W
Ci = 5.5 nF, Li = 370 µH
Power Consumption
Less than 1 Watt
Output:
Type 4–20 mA with optional HART digital signal
Range 3.8 to 20.5 mA useable
Diagnostic Alarm Selectable from 3.6 mA, 22 mA or HOLD
Damping Adjustable from 1–60
Digital Communication
HART version 5.x compatible
Display
2-line x 16-character LCD
Keypad
4-pushbutton menu-driven
Ambient Temperature
-40° to +175° F (-40° to +80° C)
Housing Material
Cast aluminum or Lexan
Cable Entry
Two ¾" NPT or M20 entries
3.6.2 Transducer
Maximum Range
20 feet (6 meters)
Minimum Range
13 inches (330 mm)
Blocking Distance
10 inches (250 mm)
Frequency
60 kHz
Process Connection
2" NPT
Process Temperature
-40º to +175º F (-40º to +80º C)
Process Pressure
0 to 43.5 psig (0 to 3 bar)
Material
Kynar Flex (PVDF) or polypropylene
Beam Angle
10º conical
3.6.3 Performance Œ
Accuracy
Greater of ± 0.2% of range or 0.24 inch (6 mm)
Repeatability
± 0.125 inch (± 3 mm)
Resolution
0.1 inch (2.5 mm)
Linearity
± 0.4 inch (±10 mm)
Response Time
Less than 1 second (typical)
Warm-up Time
30 seconds
Œ Performance is based on a reference operating condition of an ambient temperature of +60º to +77º F (+15º to + 25º C),
45 to 75% relative humidity, transducer vertically aligned over an ideal reflecting surface, and no false targets within the
ultrasonic beam angle.
56
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
3.6.4 Physical
2.18
(52)
2.02
(51)
3.99
(101)
2.48
(63)
2.48
(63)
4.06
(103)
4.06
(103)
3.26
(83)
3.26
(83)
M20 or 3/4" NPT
Conduit Opening
2" NPT
2" NPT
1.50
(38)
1.50
(38)
1.90
(48)
Diameter
1.90
(48)
Diameter
Cast Aluminum Housing with
Kynar®/Polypropylene Transducer
2.25
(57)
3.78
(96)
2.25
(57)
1.65
(42)
1.65
(42)
3.26
(83)
3.26
(83)
M20 or 3/4" NPT
Conduit Opening
2" NPT
2" NPT
3.26
(83)
3.26
(83)
1.50
(38)
1.50
(38)
1.90
(48)
Diameter
1.90
(48)
Diameter
Lexan® Housing with
Kynar/Polypropylene Transducer
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
57
3.7
Model Number
BASIC MODEL NUMBER
355
Ultrasonic transmitter for level, volume and open channel flow
POWER
5
24 VDC two-wire loop-powered
SIGNAL OUTPUT
0
1
4–20 mA without HART®
4-20 mA with HART
OPTIONS
0
None
ACCESSORIES
A
Digital display and keypad
AGENCY APPROVALS
1
A
C
FM/FMc IS & Non-incendive
ATEX IS EEx ia
ATEX XP EEx d (only available with Housing codes 0 & 1,
and Transducer code R)
HOUSING/CONDUIT CONNECTION
0
1
6
7
Cast aluminum w/ 3⁄4" NPT conduit connections
Cast aluminum w/ M20 conduit connections
Lexan plastic w/ 3⁄4" NPT conduit connections
Lexan plastic w/ M20 conduit connections
TRANSDUCER
B
R
3
58
5
5
5
0
2" NPT polypropylene
2" NPT Kynar® Flex
A
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
Echotel Model 355 Transmitter
Configuration Data Sheet
®
-SYSTEM CONFIGURATION
Default Value
Measure Type
Level Units
Range
Blocking Dist
Safe Zone Fault
Safe Zone Height
Level Offset
Trim Level
Flow Setup
Level Only
Inches
240.0"
10"
None
2"
0.0"
0.0"
Default Value
Flow Units
Flow Element
Reference Dist
Low Flow Cutoff
Gallons/Minute
Parshall 1"
120.0"
0.0"
I/O CONFIGURATION
Present Value
Controlled By
4 mA Set Point
20 mA Set Point
System Fault
Totalizer Units
Total NR Mult
Total R Mode
Total R Mult
Present Value
Present Value
ADVANCED CONFIGURATION
Input Local Tag
Damping
Echo Profile
Target Algorithm
DIAGNOSTICS MENU
Default Value
Default Value
Level
0.0"
230.0"
22 mA
Gallons
1000
Disabled
1000
Default Value
Present Value
Model 355
5
See table below for Echo Profile
First Target
Present Value
FACTORY CONFIGURATION
Echo Strength
Number of Echoes
Max/Min Temperature
Run Time
Magnetrol S/N
Model 355 Version
Peak Threshold
# Run Average
TVG
HART Device ID
Default Value
18
8
2
Present Value
Value
Value
MEASURED VALUES
Value
Value
Loop Current
Local Tag
Temperature
Totalizer R
Totalizer NR
Custom Units
Level
Volume
Flow
Head
Distance
% Output
HISTORY (IN DIAGNOSTIC MENU)
Event # and Event
1
2
3
4
5
6
7
8
9
10
Occurred
ECHO LIST (ECHO PROFILE
Duration
51-661 Echotel Model 355 Two-Wire Ultrasonic Transmitter
Dist/Level Echo #
1
2
3
4
5
6
7
8
9
IN
ADVANCED CONFIG)
Strength Value Dist/Level Value
59
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 Magnetrol’s 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.
5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com
145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306
Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93
Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317
Copyright © 2009 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
BULLETIN: 51-661.0
EFFECTIVE: May 2009