Omega UFM User guide

USER’S GUIDE

UFM Vane/Piston Consolidated
User’s Manual

dwyer-inst.com | [email protected]

For latest product manuals:
dwyer-inst.com/en/instruction-manuals

Bulletin F-PI

CONTACT

Dwyer Instruments, LLC

dwyer-inst.com/en/contact-us

Toll-Free:

1-800-872-9141

Telephone:
[phone]

Fax:
[phone]

Email: [email protected]

(USA only)

Table of Contents

1. A, L, Z General Vane / Piston Switch Manual ..............................................................................................................6

1.1. Name Plates and Product ID ........................................................................................................................................6

1.2. Installation ............................................................................................................................................................................7

1.3. Electrical Switch Ratings ................................................................................................................................................8

2. Vane/Piston H0 - Transmitter with HART ........................................................................................................................9

2.1. Quick Set Up .......................................................................................................................................................................9

2.1.1. Wiring Using Pre-Installed Wires: .......................................................................................................................9

2.1.2. Wiring Removing Pre-Installed Wires: ..............................................................................................................9

2.2. Introduction to HART® Field Device Specifications .............................................................................................. 10

2.2.1. Scope ...............................................................................................................................................................................10

2.2.2. Purpose ..........................................................................................................................................................................10

2.2.3. Who Should Use this Document? .........................................................................................................................10

2.2.4. Abbreviations and Definitions ................................................................................................................................10

2.3. Process Interface ...............................................................................................................................................................10

2.3.1. Magnetic Sensors ........................................................................................................................................................10

2.3.2. Host Interface Analog Output 1: Process Flow ...............................................................................................11

2.4. Dynamic Variables ............................................................................................................................................................11

2.5. Status Information .............................................................................................................................................................11

2.5.1. Additional Device Status (Command #48) ........................................................................................................12

2.5.2. Burst Mode .....................................................................................................................................................................12

2.5.3. Catch Device Variable ..............................................................................................................................................12

2.6. Device-Specific Commands ..........................................................................................................................................12

2.7. Command #128: Read Alarm Setpoints ...................................................................................................................12

2.7.1. Request Data Bytes ....................................................................................................................................................12

2.7.2. Response Data Bytes ................................................................................................................................................12

2.8. Command #129: Write Low Alarm Setpoint ............................................................................................................13

2.8.1. Request Data Bytes ....................................................................................................................................................13

2.8.2. Response Data Bytes ................................................................................................................................................13

2.8.3. Command-Specific Response Codes .................................................................................................................13

2.9. Command #131: Reset Totalizer ..................................................................................................................................13

2.9.1. Request Data Bytes ....................................................................................................................................................13

2.9.2. Response Data Bytes ................................................................................................................................................13

2.9.3. Command-Specific Response Codes .................................................................................................................14

2.10. Performance ........................................................................................................................................................................14

2.10.1. Sampling Rates ............................................................................................................................................................14

2.10.2. Power-Up ........................................................................................................................................................................14

2.10.3. Reset .................................................................................................................................................................................14

2.10.4. Self-Test ...........................................................................................................................................................................14

2.10.5. Command Response Times ....................................................................................................................................14

2.11. Capability Checklist..........................................................................................................................................................15

3. Vane/Piston - XØ Transmitter .............................................................................................................................................16

3.1. Nameplates and Product ID ..........................................................................................................................................17

4. Vane/Piston RX/RH ..................................................................................................................................................................18

4.1. Installation ............................................................................................................................................................................21

3Table of Contents

4.2. References ............................................................................................................................................................................21

4.3. Device Identification .........................................................................................................................................................21

4.4. Product Overview ..............................................................................................................................................................22

4.5. Process Interface ...............................................................................................................................................................22

4.5.1. Magnetic Sensors ........................................................................................................................................................22

4.5.2. Host Interface: Process Flow ..................................................................................................................................22

4.6. Status Information .............................................................................................................................................................23

4.6.1. Extended Device Status............................................................................................................................................23

4.7. Universal Commands .......................................................................................................................................................24

4.8. Common-Practice Supported Commands...............................................................................................................24

4.8.1. Command-Specific Response Codes .................................................................................................................24

4.9. Command #130: Write High Alarm Setpoint ...........................................................................................................24

4.9.1. Request Data Bytes ....................................................................................................................................................24

4.9.2 . Response Data Bytes ................................................................................................................................................24

4.9.3. Command-Specific Response Codes .................................................................................................................25

4.10. Tables ....................................................................................................................................................................................25

4.10.1. Flow Unit Codes ..........................................................................................................................................................25

4.10.2. Unit Conversion ............................................................................................................................................................25

4.11. Performance ........................................................................................................................................................................25

4.11.1. Busy and Delayed-Response .................................................................................................................................25

4.11.2. Long Messages ............................................................................................................................................................25

4.11.3. Non-Volatile Memory .................................................................................................................................................25

4.11.4. Modes ..............................................................................................................................................................................25

4.11.5. Write Protection ...........................................................................................................................................................26

4.11.6. Damping .........................................................................................................................................................................26

4.12. Default Configuration .......................................................................................................................................................26

5. Vane/Piston - TX Transmitter / TH Transmitter with HART ......................................................................................27

5.1. Installation ............................................................................................................................................................................30

5.2. Device Identification .........................................................................................................................................................30

5.3. Product Overview ..............................................................................................................................................................30

5.4. Process Interface ...............................................................................................................................................................31

5.4.1. Magnetic Sensors ........................................................................................................................................................31

5.4.2. Host Interface: Process Flow ..................................................................................................................................31

5.5. Status Information .............................................................................................................................................................32

5.5.1. Extended Device Status............................................................................................................................................32

5.6. Universal Commands .......................................................................................................................................................32

5.7. Common-Practice Supported Commands...............................................................................................................32

5.7.1 . Burst Mode .....................................................................................................................................................................32

5.7.2. Catch Device Variable ..............................................................................................................................................32

5.8. Device-Specific Commands ..........................................................................................................................................33

5.9. Command #129: Write Low Alarm Setpoint ............................................................................................................33

5.9.1. Request Data Bytes ....................................................................................................................................................33

5.9.2. Response Data Bytes ................................................................................................................................................33

5.9.3. Command-Specific Response Codes .................................................................................................................33

5.10. Command #131: Reset Totalizer ..................................................................................................................................33

4 UFM Vane Piston Consolidated Manual

5.10.1. Request Data Bytes ....................................................................................................................................................33

5.10.2. Response Data Bytes ................................................................................................................................................34

5.10.3. Command-Specific Response Codes .................................................................................................................34

5.11. Performance ........................................................................................................................................................................34

5.11.1. Sampling Rates ............................................................................................................................................................34

5.11.2. Power-Up ........................................................................................................................................................................34

5.11.3. Reset .................................................................................................................................................................................34

5.11.4. Self-Test ...........................................................................................................................................................................34

5.11.5. Command Response Times ....................................................................................................................................34

5.12. Capability Checklist..........................................................................................................................................................35

6. Vane/Piston TXL ........................................................................................................................................................................36

6.1. Name Plate and Product ID ..........................................................................................................................................36

6.2. Set Low Flow Alarm .......................................................................................................................................................... 38

7. Device Dimension Drawings.................................................................................................................................................39

8. Compliance and Certifications ............................................................................................................................................45

5Table of Contents

1. A, L, Z General Vane / Piston Switch Manual

Installation and Operation Manual for series: PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX and MX for A, L or Z
control boxes with 0, 1 or 2 switches.

1.1. Name Plates and Product ID

This manual applies to all vane/piston meters that have one of the designators in the model codes shown in
the table shown below. This can be seen on the name plate example.

Model Code Designations for Zero, One,

and Two Switches

4 to 20 mA transmitter (intrinsically safe

with approved barriers)

HART with programmable switch points AH0 LH0 ZH0

Display only A0 L0 Z0

One SPDT (3 wire) A1 L1 Z1

One high vibration SPDT (3 wire) A1B L1B Z1B

Two SPDT (3 wire) A2 L2 Z2

Two high vibration SPDT (3 wire) A2B L2B Z2B

One SPDT (4 wire) A3 L3 Z3

Two SPDT (4 wire) A4 L4 Z4

One SPDT (3 wire) hermetically sealed A53 L53 Z53

Two SPDT (3 wire) hermetically sealed A54 L54 Z54

One SPDT (3 wire) high temperature A61 L61 Z61

Two SPDT (3 wire) high temperature A62 L62 Z62

One SPDT (3 wire) gold contact A71 L71 Z71

Two SPDT (3 wire) gold contact A72 L72 Z72

Polysulfone Aluminum 316 SS

AX0 LX0 ZX0

Figure 1: Name Plate example

6 UFM Vane Piston Consolidated Manual

1.2. Installation

For best results, the meters may be installed in any position as long as proper piping installation requirements

are observed. This includes sufcient support of adjacent piping to minimize the system’s inherent vibration.
Unions of the same pipe size and full

port isolation ball valves may be installed
for ease of removal and servicing of
equipment, if necessary.

Wire directly to the switch terminal screws.

In One Switch units, the cam is easily

adjusted by depressing the outer ring and

turning it to the desired position.

Figure 2: Device overview

Figure 3: Cam adjustment

7A, L, Z General Vane / Piston Switch Manual

WARNING: This instrument was made for the specic use stated at the time of order. Any other use may

cause injury. Read instructions before using the device.

Supply Connections—Wire Sizes: Wire used to connect any Switches included must be in accordance with

all local and national codes. Wire size and insulation ratings should support actual loads. See also Switch
Ratings below. In all cases, wire must be, as a minimum, 20 AWG Teon insulated rated at 600V and 200°C. It

is recommended to include a disconnect switch or circuit breaker near this equipment.

1.3. Electrical Switch Ratings

Switch Identication Switch Description Electrical Ratings

UFM P/N-704CE, 704CE-P4, 704CE P5
Model Code Designator: 1 or 2

UFM P/N-986CE
Model Code Designator: 1B or 2B

UFM P/N-702

Model Code Designator: 61 or 62

UFM P/N-808
Model Code Designator: 71 or 72

UFM P/N-703

Model Code Designator: 3 or 4

SPDT – (3 wire)
(1 or 2 switches may
be provided)

SPDT – (3 wire)

High Vibration

SPDT –
High Temperature

SPDT –

Gold Contact

SPDT – (4 wire)
Single-Break Form Z

15 A – 125 V AC, 250 V AC, 480 V AC; HP
– 125 V AC, ¼ HP – 250 V AC

20 A – 125 V AC, 250 V AC, 480 V AC; ½
A – 125 V DC, ¼A -250 V DC; 1 HP – 125 V
AC, 2 HP – 250 V AC

15 A – 125 V AC, 250 V AC, 480 VAC; ½ A –
125 V DC, ¼ A -250 V DC; HP – 125 V AC,
¼ HP – 250 V AC

15 A – 125 V AC, 250 V AC, 480 V AC; HP
– 125 V AC, ¼ HP – 250 V AC

15 A – 125 V AC, 250 V AC, 480 V AC; 1 A
– 125 V DC, ½ A -250 V DC; ¼ HP – 125 V
AC, ½ HP – 250 V AC

8 UFM Vane Piston Consolidated Manual

2. Vane/Piston H0 - Transmitter with HART

Installation and Operation Manual Series: PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX and MX used with control
boxes: A, L, or Z with 4 to 20 mA transmitter with HART.

2.1. Quick Set Up

2.1.1. Wiring Using Pre-Installed Wires:

Complete the loop circuit using the 2 pre-installed 18”, 22 AWG wires provided.

Important: Observe polarity—The red wire is positive (+), and the black wire is negative (-).

2.1.2. Wiring Removing Pre-Installed Wires:

Open cover and remove pre-installed wires. Connect a twisted wire pair (not provided) to the terminals
observing the polarity marked on the PC board. The units are shipped with a red wire connected to the

positive (+) terminal, and a black wire connected to the negative (-) terminal. The wire may be up to AWG

14 size, but no smaller than AWG 22.

Figure 4: Terminals for 4 to 20 mA loop

9Vane/Piston H0 - Transmitter with HART

2.2. Introduction to HART® Field Device Specifications

2.2.1. Scope

The Universal Flow Monitors water ow transmitter, model ME Transmitter complies with HART Protocol
Revision 7.0. This document species all the device specic features and documents HART Protocol
implementation details (e.g., the Engineering Unit Codes supported). The functionality of this Field Device
is described sufciently to allow its proper application in a process and its complete support in HART

capable Host Applications.

2.2.2. Purpose

This specication is designed to complement other documentation (e.g., the installation manuals specic
to PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE, and XHF model ow meters) by providing a
complete, unambiguous description of this Field Device from a HART Communication perspective.

2.2.3. Who Should Use this Document?

The specication is designed to be a technical reference for HART capable Host Application Developers,
System Integrators and knowledgeable End Users. It also provides functional specications (e.g.,

commands, enumerations and performance requirements) used during Field Device development,
maintenance and testing. This document assumes the reader is familiar with HART Protocol requirements
and terminology.

2.2.4. Abbreviations and Definitions

ADC Analog to Digital Converter
CPU Central Processing Unit (of microprocessor)
DAC Digital to Analog Converter

EEPROM Electrically-Erasable Read-Only Memory

ROM Read-Only Memory

PV Primary Variable
SV Secondary Variable

HCF HART Communication Foundation

FSK Frequency Shift Keying Physical Layer

2.3. Process Interface

2.3.1. Magnetic Sensors

There are two built-in hall-effect sensors measuring the rotation of a permanent magnet that is mounted

onto the owmeter shaft. As the shaft rotates with ow, the sensors provide analog readings that are

in turn converted to a digital value by and A/D converter. The digital values are then processed by the

microcontroller and linearized, and subsequently converted to a scaled analog output via a D/A converter

in the range of 4 to 20 mA.

10 UFM Vane Piston Consolidated Manual

2.3.2. Host Interface Analog Output 1: Process Flow

The two-wire 4 to 20 mA current loop is connected to two terminals on the transmitter circuit board.

Depending on the product used, one of the two congurations are offered for eld wiring.

The rst option allows the user to directly connect the loop wires to the terminals on the PCB. The correct

polarity is shown in the pictures below, where the red wire is connected to the (+) terminal and the black
wire is connected to the (–) terminal.

Figure 5: PCB Polarity wiring

2.4. Dynamic Variables

Two Dynamic Variables are implemented.

PV Volumetric Flow Reading GPM, CMH, LPM
SV Totalizer Value based on PV Follows PV Units

The PV is derived using a calibrated linearization table applied to A/D converter readings of hall-effect
sensors. The SV is based on a 5ms timer and is updated based on the current reading of ow. Both PV and
SV values are smoothed.

2.5. Status Information

Bit Mask Denition Conditions to set bit

0x80(bit 7) Device Malfunction None
0x40(bit 6) Conguration Changed Any change in device conguration
0x20(bit 5) Cold start Set any time power is cycled

0x10(bit 4) More Status Available Triggers when either alarm is active
0x08(bit 3) Loop Current Fixed None
0x04(bit 2) Loop Current Saturated Occurs when loop current reaches upper limit
0x02(bit 1) Non-Primary Variable out of limits None

0x01(bit 0) Primary Variable Out of limits

When Bit 4 is set, Host should send Command 48 to determine which alarm is active.

Meaning Units

Occurs when PV is being limited due to

exceeding calibrated limitations

11Vane/Piston H0 - Transmitter with HART

2.5.1. Additional Device Status (Command #48)

Command #48 returns 9 bytes of data, with the following status information:

Bit Mask Description Conditions

0x80 Undened NA
0x40 Undened NA
0x20 Undened NA
0x10 Undened NA
0x08 Undened NA
0x04 Undened NA

0x02 High Alarm High Alarm is active if set

0x01 Low Alarm Low Alarm is active if set

2.5.2. Burst Mode

This Field Device does not support Burst Mode.

2.5.3. Catch Device Variable

This Field Device does not support Catch Device Variable.

2.6. Device-Specific Commands

The following device-specic commands are implemented:

128 Read Alarm Setpoints

129 Write Low Alarm Setpoint

130 Write High Alarm Setpoint
131 Reset Totalizer

2.7. Command #128: Read Alarm Setpoints

Reads the High and Low Alarm Setpoints. If zero, the alarm is disabled.

2.7.1. Request Data Bytes

Byte Format Description

None

2.7.2. Response Data Bytes

Byte Format Description

0 Enum PV Unit value

1-4 Float High Alarm Setpoint
5-8 Float Value of High Alarm Setpoint

12 UFM Vane Piston Consolidated Manual

2.8. Command #129: Write Low Alarm Setpoint

Writes the setpoint for the Low Alarm.

2.8.1. Request Data Bytes

Byte Format Description

0-3 Float Low Alarm Setpoint

2.8.2. Response Data Bytes

Byte Format Description

0 Enum PV Unit value

1-4 Float Low Alarm Setpoint

2.8.3. Command-Specific Response Codes

Code Class Description

0 Success No Command-Specic Errors

1-15 Undened

16 Error Access Restricted

17-31 Undened

32 Error Busy

33 -127 Undened

2.9. Command #131: Reset Totalizer

Resets the totalizer to zero.

2.9.1. Request Data Bytes

Byte Format Description

None

2.9.2. Response Data Bytes

Byte Format Description

None

13Vane/Piston H0 - Transmitter with HART

2.9.3. Command-Specific Response Codes

Code Class Description

0 Success No Command-Specic Errors

1-15 Undened

16 Error Access Restricted

17-31 Undened

32 Error Busy

33 -127 Undened

2.10. Performance

2.10.1. Sampling Rates

Typical sampling rates are shown in the following table.

PV digital value calculation 10 per second
SV digital value calculation 10 per second

Analog output update 10 per second

2.10.2. Power-Up

The device is typically ready within 1 second of power-up. Totalizer is initialized to zero.

2.10.3. Reset

Command 42 (“Device Reset”) causes the device to reset its microcontroller. The resulting restart is

identical to the normal power up sequence.

2.10.4. Self-Test

Self-Test is not supported.

2.10.5. Command Response Times

Minimum 20 ms

Typ ical 50 ms

Maximum 100 ms

14 UFM Vane Piston Consolidated Manual

2.11. Capability Checklist

Manufacturer, model and revision Universal Flow, ME Transmitter, Rev1

Device type Transmitter

HART revision 7.0

Device Description available No

Number and type of sensors 2 internal

Number and type of actuators 0

Number and type of host side signals 1: 4 to 20 mA analog

Number of Device Variables 4
Number of Dynamic Variables 2
Mappable Dynamic Variables? No

Number of common-practice commands 5
Number of device-specic commands 4

Bits of additional device status 2

Alternative operating modes? No
Burst mode? No
Write-protection? No

15Vane/Piston H0 - Transmitter with HART

3. Vane/Piston - XØ Transmitter

Installation and Operation Manual Series: PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE, and XHF control

boxes with transmitter. The AX0, LX0, and ZX0 are display and transmitter only. They do not contain internal
switches and are intrinsically safe when used with approved barriers.

Model Code Designations for Zero, One,

and Two Switches

4 to 20 mA transmitter (intrinsically safe

with approved barriers)

HART with programmable switch points AH0 LH0 ZH0

Display only A0 L0 Z0

One SPDT (3 wire) A1 L1 Z1

One high vibration SPDT (3 wire) A1B L1B Z1B

Two SPDT (3 wire) A2 L2 Z2

Two high vibration SPDT (3 wire) A2B L2B Z2B

One SPDT (4 wire) A3 L3 Z3

Two SPDT (4 wire) A4 L4 Z4

One SPDT (3 wire) hermetically sealed A53 L53 Z53

Two SPDT (3 wire) hermetically sealed A54 L54 Z54

One SPDT (3 wire) high temperature A61 L61 Z61

Two SPDT (3 wire) high temperature A62 L62 Z62

One SPDT (3 wire) gold contact A71 L71 Z71

Two SPDT (3 wire) gold contact A72 L72 Z72

Polysulfone Aluminum 316 SS

AX0 LX0 ZX0

16 UFM Vane Piston Consolidated Manual

3.1. Nameplates and Product ID

This manual applies to all vane/piston meters that have the designator “AX0”, “LX0” or “ZX0” in the model

code. This can be seen on the name plate as shown below.

Figure 6: Name plate and Product ID

17Vane/Piston - XØ Transmitter

4. Vane/Piston RX/RH

Installation and Operation Manual Series: PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE and XHF Used

with R control boxes with 4 to 20 mA transmitter or HART and optional mechanical switches. The RX0 is display
and transmitter only. The RX0 does not contain any internal switches and is intricisically safe when used with
approved barriers.

Flow rate display, hazardous location
switches as follows:

One SPDT hazardous location R7*
One DPDT hazardous location R17 *
Two SPDT hazardous location R18*
Two DPDT hazardous location R19 *

Note: Flows 5 GPM or greater*

Flow rate display, 4 to 20 mA transmitter plus
switch options as follows:

Display and transmitter only
(intrinsically safe with no switch
options with approved barriers)

One SPDT (3 wire) RX1

Two SPDT (3 wire) RX2

One SPDT (4 wire) RX3

Two SPDT (4 wire) RX4

One SPDT (3 wire) high
temperature

Flow rate display, HART, & 4 to 20 mA output
(HART protocol is not intrinsically safe):

HART & 4 to 20 mA output only RH0

One SPDT (3 wire) RH1

Two SPDT (3 wire) RH2

One SPDT (4 wire) RH3

Two SPDT (4 wire) RH4

RX0

RX61

18 UFM Vane Piston Consolidated Manual

Figure 7: R Box shown open with optional mechanical switch

19Vane/Piston RX/RH

Figure 8: Transmitter wiring with or without HART

Figure 9: Mechanical (optional) switch wiring

20 UFM Vane Piston Consolidated Manual

4.1. Installation

For best results, the meters may be installed in any position as long as proper piping installation requirements

are observed. This includes sufcient support of adjacent piping to minimize the system’s inherent vibration.
Unions of the same pipe size and full port isolation ball valves may be installed for ease of removal and

servicing of equipment, if necessary.

Figure 10: Maximum load vs Supply voltage graph

4.2. References

HART Smart Communications Protocol Specication. HCF_SPEC-12. Available from the HCF. Installation
manuals specic to PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE and XHF model ow meters as

manufactured by Universal Flow Monitors, Inc.

4.3. Device Identification

Figure 11: Device Identification

21Vane/Piston RX/RH

4.4. Product Overview

The ME Transmitter is a two-wire loop-powered ow transmitter, with a 4 to 20 mA output. This transmitter

uses a non-contact magnetic encoder for measuring the displacement of the shaft/pointer on standard

UFM owmeters. It is an add-on feature to PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE and XHF
model ow meters as manufactured by Universal Flow Monitors, Inc. The ME Transmitter replaces the earlier
models Digital Transmitters that utilized a potentiometer, providing improved accuracy while maintaining 100%
compatibility. The analog output of this device is linear with ow over the working range of all supported
owmeters.

4.5. Process Interface

4.5.1. Magnetic Sensors

There are two built-in hall-effect sensors measuring the rotation of a permanent magnet that is mounted

onto the owmeter shaft. As the shaft rotates with ow, the sensors provide analog readings that are

in turn converted to a digital value by and A/D converter. The digital values are then processed by the

microcontroller and linearized, and subsequently converted to a scaled analog output via a D/A converter

in the range of 4 to 20 mA.

4.5.2. Host Interface: Process Flow

The two-wire 4 to 20 mA current loop is connected to two terminals on the transmitter circuit board.

Depending on the product used, one of the two congurations are offered for eld wiring.

There is a secondary terminal strip away from the PCB (mounted in a separate compartment of the
owmeter) and is marked L+ and L-. The red wire connects the (+) terminal on the PCB to L+, and the
black wire connects the (–) terminal on the PCB to L-.

Figure 12: PCB wiring

This is the only output from this transmitter, representing the process ow measurement, linearized and
scaled according to the congured range of the instrument. This output corresponds to the Primary
Variable. HART Communication is supported on this loop.

22 UFM Vane Piston Consolidated Manual

A guaranteed linear over-range is provided. The up-scale current of 24 mA can indicate device

malfunction. Current values are shown in the table below.

Linear over-range

Device malfunction
indication

Maximum current

Multi-Drop current draw

Lift-off voltage

4.6. Status Information

Bit Mask Denition Conditions to set bit

0x80(bit 7) Device Malfunction None

0x40(bit 6) Conguration Changed Any change in device conguration

0x20(bit 5) Cold start Set any time power is cycled

0x10(bit 4) More Status Available Triggers when either alarm is active

0x08(bit 3) Loop Current Fixed None
0x04(bit 2) Loop Current Saturated Occurs when loop current reaches upper limit

0x02(bit 1) Non-Primary Variable out of limits None

0x01(bit 0) Primary Variable Out of limits

Direction Values (percent of range) Values (mA or V)

Down 0% ± 0.5% 3.92 to 4.08 mA
Up +106.25% ± 0.1% 20.84 mA to 21.16 mA

Down N/A N/A
Up +125.0% ± 0.1% 23.98 mA to 24.02 mA

+106.25% ± 1% 20.84 mA to 21.16 mA

4.0 mA

10.5 V

Occurs when PV is being limited due to

exceeding calibrated limitations

When Bit 4 is set, Host should send Command 48 to determine which alarm is active.

4.6.1. Extended Device Status

The Field Device cannot predict when maintenance will be required. Extended Device Status is unused.

Byte Description Data

0-5 Device Specic Status Only Byte 0 is used

6 Extended Device Status Bit 1 will be set when an alarm condition is active.

7 Device Operating Mode 0

8 Standard Status 0

“Not used” bits are always set to 0.

Device does not support extended device status, all device status activity is included in the device status
byte.

23Vane/Piston RX/RH

4.7. Universal Commands

All Universal Commands are supported as specied in the HART Universal Command Specication.

4.8. Common-Practice Supported Commands

The following common-practice commands are implemented:

33 Read Device Variables
35 Write Range Values

42 Perform Master Reset
44 Write PV Units
54 Read Device Variable Information

In command 54 the acquisition period is unused. Values are typically updated every 100 ms.

4.8.1. Command-Specific Response Codes

Code Class Description

0 Success No Command-Specic Errors

1-15 Undened

16 Error Access Restricted

17-31 Undened

32 Error Busy

33 -127 Undened

4.9. Command #130: Write High Alarm Setpoint

Writes the setpoint for the High Alarm.

4.9.1. Request Data Bytes

Byte Format Description

0-3 Float High Alarm Setpoint

4.9.2 . Response Data Bytes

Byte Format Description

0 Enum PV Unit value

1-4 Float High Alarm Setpoint

24 UFM Vane Piston Consolidated Manual

4.9.3. Command-Specific Response Codes

Code Class Description

0 Success No Command-Specic Errors

1-15 Undened

16 Error Access Restricted

17-31 Undened

32 Error Busy

33 -127 Undened

4.10. Tables

4.10.1. Flow Unit Codes

Subset of HART Common Unit Codes

16 Gallons Per Minute (GPM)

17 Liters Per Minute (LPM)
19 Cubic Meters Per Hour (CMH)

4.10.2. Unit Conversion

Internally, the transmitter uses Gallons per Minute. Conversions are made using a oating point factor.
Values are directly converted from GPM when possible, however Alarm values changed between units are

converted from stored unit value:

New Unit Previous Unit Factor

GPM

LPM

CMH

LPM 0.2642

CMH 4.403
GPM 3.785
CMH 16.666

GPM 0.2271

LPM 0.06

4.11. Performance

4.11.1. Busy and Delayed-Response

Device busy is not used. Delayed-response is not used.

4.11.2. Long Messages

The largest data eld used is in the response to Command 21: 34 bytes including the two status bytes.

4.11.3. Non-Volatile Memory

EEPROM is used to hold the device’s conguration parameters. New data is written within 100ms of

command receipt.

4.11.4. Modes

Fixed current mode is not implemented.

25Vane/Piston RX/RH

4.11.5. Write Protection

Write-protection is not implemented.

4.11.6. Damping

Damping is not implemented.

4.12. Default Configuration

Default conguration is based on a unit-by-unit basis.

26 UFM Vane Piston Consolidated Manual

5. Vane/Piston - TX Transmitter / TH Transmitter with HART

Installation and Operation Manual Series: PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE and XHF Used

with T control boxes with 4 to 20 mA transmitter or HART and optional mechanical switches. Note: The 4 to 20 mA

transmitter with or without the LCD and with no switches is intrinsically safe with approved barriers.

Pointer, scale and 4 to 20 mA:

No Switches TX0

One SPDT (3 wire) TX1

Two SPDT (3 wire) TX2

One SPDT (4 wire) TX3

Two SPDT (4 wire) TX4

One SPDT (3 wire) high temperature TX61

Flow rate display, HART & 4 to 20 mA output
(HART protocol is not intrinsically safe):

HART & 4 to 20 mA output only TH0

One SPDT (3 wire) TH1

Two SPDT (3 wire) TH2

One SPDT (4 wire) TH3

Two SPDT (4 wire) TH4

PIPING: Screw pipe into meter with ow going into port marked “IN”.

Connect switch wires and/or open collector alarm and transmitter wires to the terminal

strip as shown.

WIRING:

CÂBLAGE

GROUNDING:

MISE À LA

TERRE

This section applies to all vane/piston meters that have the designator “TX0, 1, 2, 3, 4, or 61” in the model code.

This can be seen on the name plate as shown below.

Wire must be in accordance with all local and national codes. Wire size and insulation

ratings should support actual loads. In all cases, wire must be, as a minimum, 20 AWG

Teon insulated rated at 600 V and 200 ˚C. It is recommended to include a disconnect

switch or circuit breaker near this equipment.

Le câble doit être conforme à tous les codes locaux et nationaux. Le diamètre du câble

et ses niveaux d’isolation doivent pouvoir supporter des charges réelles. Dans tous les
cas, le câble doit être isolé au minimum en téon de calibre 20 AWG et d’une capacité
nominale de 600 V et de 200°C. Il est recommandé d’inclure un interrupteur général ou
un disjoncteur à proximité de cet équipement.

For protection against electrical shock in case of a fault, connect an external earth
ground to the grounding screws or lugs provided inside this instrument. Such attachment

points are identied with a tag or label adjacent to the grounding screw or lug with the

symbol.

Pour se protéger des chocs électriques en cas de défaut à la terre, brancher une mise
à la terre externe sur les vis ou cosses de mise à la terre fournies à l’intérieur de cet
instrument. De tels points de xation sont identiés à l’aide d’une étiquette ou d’un label
adjacent à la vis ou à la cosse de mise à la terre avec le symbole.

Figure 13: Name plate and Product ID

27Vane/Piston - TX Transmitter / TH Transmitter with HART

Figure 14: T Box with optional switch and transmitter

28 UFM Vane Piston Consolidated Manual

Figure 15: Transmitter wiring with out without HART

Figure 16: Mechanical (optional) switch wiring

29Vane/Piston - TX Transmitter / TH Transmitter with HART

5.1. Installation

For best results, the meters may be installed in any position as long as proper piping installation requirements

are observed. This includes sufcient support of adjacent piping to minimize the system’s inherent vibration.
Unions of the same pipe size and full port isolation ball valves may be installed for ease of removal and

servicing of equipment, if necessary.

Figure 17: Maximum load resistance vs Supply voltage

5.2. Device Identification

5.3. Product Overview

The ME Transmitter is a two-wire loop-powered ow transmitter, with a 4 to 20 mA output. This transmitter

uses a non-contact magnetic encoder for measuring the displacement of the shaft/pointer on standard

UFM owmeters. It is an add-on feature to PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE and XHF
model ow meters as manufactured by Universal Flow Monitors, Inc. The ME Transmitter replaces the earlier
models Digital Transmitters that utilized a potentiometer, providing improved accuracy while maintaining 100%
compatibility. The analog output of this device is linear with ow over the working range of all supported
owmeters.

Figure 18: Device identification

30 UFM Vane Piston Consolidated Manual

5.4. Process Interface

5.4.1. Magnetic Sensors

There are two built-in hall-effect sensors measuring the rotation of a permanent magnet that is mounted

onto the owmeter shaft. As the shaft rotates with ow, the sensors provide analog readings that are

in turn converted to a digital value by and A/D converter. The digital values are then processed by the

microcontroller and linearized, and subsequently converted to a scaled analog output via a D/A converter

in the range of 4 to 20 mA.

5.4.2. Host Interface: Process Flow

The two-wire 4 to 20 mA current loop is connected to two terminals on the transmitter circuit board.

Depending on the product used, one of the two congurations are offered for eld wiring.

A secondary terminal strip away from the PCB (mounted in a separate compartment of the owmeter)
and is marked L+ and L-. The red wire connects the (+) terminal on the PCB to L+, and the black wire
connects the (–) terminal on the PCB to L-.

Figure 19: PCB wiring

This is the only output from this transmitter, representing the process ow measurement, linearized and
scaled according to the congured range of the instrument. This output corresponds to the Primary
Variable. HART Communication is supported on this loop.

A guaranteed linear over-range is provided. The up-scale current of 24 mA can indicate device

malfunction. Current values are shown in the table below.

Direction Values (percent of range) Values (mA or V)

Linear over-range

Device malfunction
indication

Maximum current

Multi-Drop current draw

Lift-off voltage

Down 0% ± 0.5% 3.92 to 4.08 mA

Up +106.25% ± 0.1% 20.84 mA to 21.16 mA

Down N/A N/A

Up +125.0% ± 0.1% 23.98 mA to 24.02 mA

+106.25% ± 1% 20.84 mA to 21.16 mA

4.0 mA

10.5 V

31Vane/Piston - TX Transmitter / TH Transmitter with HART

5.5. Status Information

Bit Mask Denition Conditions to set bit

0x80(bit 7) Device Malfunction None

0x40(bit 6) Conguration Changed Any change in device conguration

0x20(bit 5) Cold start Set any time power is cycled

0x10(bit 4) More Status Available Triggers when either alarm is active

0x08(bit 3) Loop Current Fixed None
0x04(bit 2) Loop Current Saturated Occurs when loop current reaches upper limit

0x02(bit 1) Non-Primary Variable out of limits None

0x01(bit 0) Primary Variable Out of limits

When Bit 4 is set, Host should send Command 48 to determine which alarm is active.

5.5.1. Extended Device Status

The Field Device cannot predict, in advance, when the maintenance will be required. Extended Device

Status is unused.

Byte Description Data

0-5 Device Specic Status Only Byte 0 is used

6 Extended Device Status Bit 1 will be set when an alarm condition is active.

7 Device Operating Mode 0

8 Standard Status 0 Not used

Occurs when PV is being limited due to

exceeding calibrated limitations

“Not used” bits are always set to 0.

Device does not support extended device status, all device status activity is included in the device status
byte.

5.6. Universal Commands

All Universal Commands are supported as specied in the HART Universal Command Specication.

5.7. Common-Practice Supported Commands

The following common-practice commands are implemented:

33 Read Device Variables
35 Write Range Values

42 Perform Master Reset
44 Write PV Units
54 Read Device Variable Information

In command 54 the acquisition period is unused. Values are typically updated every 100ms.

5.7.1 . Burst Mode

This Field Device does not support Burst Mode.

5.7.2. Catch Device Variable

This Field Device does not support Catch Device Variable.

32 UFM Vane Piston Consolidated Manual

5.8. Device-Specific Commands

The following device-specic commands are implemented:

128 Read Alarm Setpoints

129 Write Low Alarm Setpoint

130 Write High Alarm Setpoint
131 Reset Totalizer

5.9. Command #129: Write Low Alarm Setpoint

Writes the Setpoint for the Low Alarm.

5.9.1. Request Data Bytes

Byte Format Description

0-3 Float Low Alarm Setpoint

5.9.2. Response Data Bytes

Byte Format Description

0 Enum PV Unit value

1-4 Float Low Alarm Setpoint

5.9.3. Command-Specific Response Codes

Code Class Description

0 Success No Command-Specic Errors

1-15 Undened

16 Error Access Restricted

17-31 Undened

32 Error Busy

33 -127 Undened

5.10. Command #131: Reset Totalizer

Resets the totalizer to zero.

5.10.1. Request Data Bytes

Byte Format Description

None

33Vane/Piston - TX Transmitter / TH Transmitter with HART

5.10.2. Response Data Bytes

Byte Format Description

None

5.10.3. Command-Specific Response Codes

Code Class Description

0 Success No Command-Specic Errors

1-15 Undened

16 Error Access Restricted

17-31 Undened

32 Error Busy

33 -127 Undened

5.11. Performance

5.11.1. Sampling Rates

Typical sampling rates are shown in the following table.

PV digital value calculation 10 per second
SV digital value calculation 10 per second

Analog output update 10 per second

5.11.2. Power-Up

The device is typically ready within 1 second of power-up. The totalizer is initialized to zero.

5.11.3. Reset

Command 42 (“Device Reset”) causes the device to reset its microcontroller. The resulting restart is

identical to the normal power up sequence.

5.11.4. Self-Test

Self-Test is not supported.

5.11.5. Command Response Times

Minimum 20 ms

Typ ical 50 ms

Maximum 10 0 ms

34 UFM Vane Piston Consolidated Manual

5.12. Capability Checklist

Manufacturer, model and revision Universal Flow, ME Transmitter, Rev1

Device type Transmitter

HART revision 7.0

Device Description available No

Number and type of sensors 2 internal

Number and type of actuators 0

Number and type of host side signals 1: 4 to 20 mA analog

Number of Device Variables 4
Number of Dynamic Variables 2
Mappable Dynamic Variables? No

Number of common-practice commands 5
Number of device-specic commands 4

Bits of additional device status 2

Alternative operating modes? No
Burst mode? No
Write-protection? No

35Vane/Piston - TX Transmitter / TH Transmitter with HART

6. Vane/Piston TXL

Installation and Operation Manual Series: PI, LL, LP, LH, SN, SM, SH, MN, MM, MH, SX, MX, LN, LE and XHF. Note:
The TXL0 4 to 20 mA transmitter with or without the LCD and with no switches is intrinsically safe with approved

barriers.

LCD readout, 4 to 20 mA with 2 open
collectors:

No switches TXL0

One SPDT (3 wire) TXL1

One SPDT (4 wire) TXL3

One SPDT (3 wire) high temperature TXL61

6.1. Name Plate and Product ID

This manual applies to all vane/piston meters that have the designator “TXL0, 1, 3, or 61” in the model code.

This can be seen on the name plate as shown below.

Figure 20: Name plate example

Figure 21: Terminal strip for power and 4 to 20 mA signal

36 UFM Vane Piston Consolidated Manual

PIPING: Screw pipe into meter with ow going into port marked “IN”.

Connect switch wires and/or open collector alarm and transmitter wires to the terminal

strip as shown.

WIRING:

CÂBLAGE

GROUNDING:

MISE À LA

TERRE

A typical 4 to 20 mA wiring diagram is shown below:

Wire must be in accordance with all local and national codes. Wire size and insulation

ratings should support actual loads. In all cases, wire must be, as a minimum, 20 AWG

Teon insulated rated at 600 V and 200 ˚C. It is recommended to include a disconnect

switch or circuit breaker near this equipment.

Le câble doit être conforme à tous les codes locaux et nationaux. Le diamètre du câble

et ses niveaux d’isolation doivent pouvoir supporter des charges réelles. Dans tous les
cas, le câble doit être isolé au minimum en téon de calibre 20 AWG et d’une capacité
nominale de 600 V et de 200°C. Il est recommandé d’inclure un interrupteur général ou
un disjoncteur à proximité de cet équipement.

For protection against electrical shock in case of a fault, connect an external earth
ground to the grounding screws or lugs provided inside this instrument. Such attachment

points are identied with a tag or label adjacent to the grounding screw or lug with the

symbol.

Pour se protéger des chocs électriques en cas de défaut à la terre, brancher une mise
à la terre externe sur les vis ou cosses de mise à la terre fournies à l’intérieur de cet
instrument. De tels points de xation sont identiés à l’aide d’une étiquette ou d’un label
adjacent à la vis ou à la cosse de mise à la terre avec le symbole.

Figure 22: 4 to 20 mA wiring diagram and load resistor vs power supply diagram

A guaranteed linear over-range is provided. Device malfunction can be indicated by the up-scale current of

24 mA. Current values are shown in the table below.

Direction Values (percent of range) Values (mA or V)

Linear over-range

Device malfunction

indication

Maximum current

Multi-Drop current draw

Lift-off voltage

Down 0% ± 0.5% 3.92 to 4.08 mA

Up +106 .25% ± 0.1% 20.84 mA to 21.16 mA

Down N/A N/A

Up +125.0% ± 0.1% 23.98 mA to 24.02 mA

+106.25% ± 1% 20.84 mA to 21.16 mA

4.0 mA

10.5 V

37Vane/Piston TXL

1. After the last digit is set, continue holding A2 until “SEt” is displayed. If you want to change the rst digit
again, do not hold A2. Momentarily press and release A2 and the rst digit starts blinking again.

2. When nished recording the new setpoint (“SEt” is displayed), release A2.

Figure 23: Press and release A2

Note: Valid setpoint range is 0-100% of full-scale ow. If the alarm value is set higher than full-scale, it is

clamped at full-scale upon exiting this menu.

To disable the alarm, set its value to zero.

The red ALARM 1 LED comes on when ow exceeds this setpoint. This LED is in series with the drive circuit
for the high-alarm open-collector output, meaning that the output transistor is active whenever this LED is on.
Some models do not have any external wiring that connects to the alarm transistor (see Model Codes).

In this example, the high alarm had been set for 80.0; therefore, the red LED was activated when ow reached

80.1.

The LED turns off when ow < (setpoint – hysteresis). Hysteresis is 5% of full-scale.

Figure 24: LED activation example

6.2. Set Low Flow Alarm

Figure 25: Set Low Flow alarm

1. Press A2 until “LFLo” is displayed, then release A2.

38 UFM Vane Piston Consolidated Manual

7. Device Dimension Drawings

Figure 26: Vane/Piston H0 - Transmitter with HART PI, LL, LP, and LH dimensions

Figure 27: Vane/Piston - XØ Transmitter PI, LL, LP, and LH dimensions

Figure 28: Vane/Piston - XØ Transmitter SX, SN, SM, and SH dimensions

39Device Dimension Drawings

Figure 29: Vane/Piston - XØ Transmitter MN, MM, MH, and MX dimensions

Figure 30: Vane/Piston RX/RH PI, LL, LP, and LH dimensions

40 UFM Vane Piston Consolidated Manual

Figure 31: Vane/Piston RX/RH SX, SN, SM, and SH dimensions

Figure 32: Vane/Piston RX/RH XHF dimensions

41Device Dimension Drawings

7.63

14.19

19.56 (4 SPINGS for FLOW RATES GREATER

400 and 500 GPM

8.75

12.94

PORT TO PORT

THAN 300 GPM, 1200 LPM, or 70 CMH)

9.44

5.13

10.44
REF

5.31

1/2" NPT CONDUIT CONNECTION
BOX TYPES RP, RT, RTV, & RTZ

R10.16 APPROXIMATE SWING RADIUS

Figure 33: Vane/Piston RX/RH LE and LN dimensions

18.28 (2 SPRINGS)

R8.88 APPROX. SWING RADIUS

Figure 34: Vane/Piston - TX Transmitter / TH Transmitter with HART LL, LP, and LH dimensions

42 UFM Vane Piston Consolidated Manual

Figure 35: Vane/Piston - TX Transmitter / TH Transmitter with HART SX, SN, SM, and SH dimensions

Figure 36: Vane/Piston - TX Transmitter / TH Transmitter with HART XHF dimensions

43Device Dimension Drawings

14.19

20.27 (4 Springs for flow rates greater than 300 GPM, 1200 LPM, or 70 CMH)

400 and 500 GPM.

12.94

PORT TO PORT

18.99 (2 Springs)

10.15

5.13

10.25
REF

R8.88 APPROXIMATE SWING RADIUS.

R10.16 APPROXIMETE SWING RADIUS.

Figure 37: Vane/Piston TX/TH LE and LN dimensions

44Device Dimension Drawings

8. Compliance and Certifications

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This

device may not cause harmful interference, and (2) this device must accept any interference received, including

interference that may cause undesired operation. Changes or modications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.

Note:

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference

when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own expense.

CAN ICES-003(A) / NMB-003(A)

This Class A digital apparatus complies with Canadian ICES-003

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada

Due to the sensitive nature of the product, errors may be encountered in the presence of high frequency electro-

magnetic elds.

If it suspected this equipment has errors due to electro-magnetic eld interference, the user is encouraged to

correct the interference by one or more of the following measures:

- Reorient or relocate the electro-magnetic eld transmitter. Sources include: Cell phones, Wi-Fi Routers or

business radios.

- Use shielded wires on the 4 to 20 mA cables.

- Contact UFM costumer support for help.

45 UFM Vane Piston Consolidated Manual

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period
of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to
the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s
customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge.
OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but
not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or
unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered
with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat,
moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside
of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact
points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes
responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its
products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only
that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER
WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set
forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract,
warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or
special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity,
medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set
forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA
and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s)
in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.

FOR WARRANTY RETURNS, please have the
following information available BEFORE contacting
OMEGA:

1. Purchase Order number under which the product
was PURCHASED,

2. Model and serial number of the product under
warranty, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest
in technology and engineering.

OMEGA is a trademark of OMEGA ENGINEERING, INC. © Copyright OMEGA ENGINEERING, INC. All rights reserved. This document may not
be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without
the prior written consent of OMEGA ENGINEERING, INC.

FOR NON-WARRANTY REPAIRS,

consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST
of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems
relative to the product.

dwyer-inst.com

®

©Copyright 2024 Dwyer Instruments, LLC Printed in U.S.A. 9/24

Improving the world, one measurement at a time.

TM

UNIVERSAL
FLOW MONITORS

FR#: 444744-00 Rev. 1