Micro Motion Micro Motion 2500 Transmitters with Configurable Input/Outputs Manuals & Guides

Configuration and Use Manual

MMI-20019038, Rev AC

Micro Motion™ 2500 Transmitters with
Configurable Input/Outputs

Configuration and Use Manual

February 2022

Safety messages

Safety messages are provided throughout this manual to protect personnel and equipment. Read each safety message carefully
before proceeding to the next step.

Safety and approval information

This Micro Motion product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EU declaration of conformity for directives that apply to this product. The following are
available: the EU declaration of conformity, with all applicable European directives, and the complete ATEX Installation Drawings
and Instructions. In addition the IECEx Installation Instructions for installations outside of the European Union and the CSA
Installation Instructions for installations in North America are available on the internet at or through your local Micro Motion
support center.

Information affixed to equipment that complies with the Pressure Equipment Directive, can be found on the internet at . For
hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.

Other information

Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the configuration
manual. Product data sheets and manuals are available from the Micro Motion web site at www.emerson.com.

Return policy

Follow Micro Motion procedures when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Micro Motion employees. Micro Motion will not accept
your returned equipment if you fail to follow Micro Motion procedures.

Return procedures and forms are available on our web support site at www.emerson.com, or by phoning the Micro Motion
Customer Service department.

Emerson Flow customer service

Email:

• Worldwide: [e-mail]

• Asia-Pacific: [e-mail]

Telephone:

North and South America

United States 800-522-6277 U.K. and Ireland 0870 240 1978 Australia 800 158 727

Canada [phone] The Netherlands [phone]

Mexico [phone] France [phone]

Argentina [phone] Germany 0800 182 5347 Pakistan 888 550 2682

Brazil [phone] Italy [phone] China [phone]

Chile [phone] Central & Eastern [phone]

Peru [phone] Russia/CIS [phone] South Korea [phone]

Europe and Middle East Asia Pacific

New Zealand 099 128 804

6666

India 800 440 1468

901

Japan [phone]

111

Egypt 0800 000 0015 Singapore [phone]

Oman 800 70101 Thailand 001 800 441 6426

Qatar 431 0044 Malaysia 800 814 008

Kuwait 663 299 01

South Africa 800 991 390

Saudi Arabia 800 844 9564

UAE 800 0444 0684

2

Configuration and Use Manual Contents

MMI-20019038 February 2022

Contents

Part I Getting started

Chapter 1 Before you begin........................................................................................................9

1.1 About this manual....................................................................................................................... 9

1.2 Transmitter model code.............................................................................................................. 9

1.3 Communications tools and protocols.......................................................................................... 9

1.4 Additional documentation and resources.................................................................................. 10

Chapter 2 Quick start............................................................................................................... 11

2.1 Power up the transmitter...........................................................................................................11

2.2 Check meter status....................................................................................................................11

2.3 Make a startup connection to the transmitter............................................................................12

2.4 (Optional) Adjust digital communications settings.................................................................... 12

2.5 Verify mass flow measurement..................................................................................................13

2.6 Verify the zero........................................................................................................................... 13

Part II Configuration and commissioning

Chapter 3 Introduction to configuration and commissioning....................................................17

3.1 Configuration flowchart.............................................................................................................17

3.2 Default values and ranges.......................................................................................................... 18

3.3 Disable write-protection on the transmitter configuration.........................................................18

3.4 Restore the factory configuration.............................................................................................. 18

Chapter 4 Configure process measurement..............................................................................19

4.1 Configure mass flow measurement........................................................................................... 19

4.2 Configure volume flow measurement for liquid applications..................................................... 23

4.3 Configure GSV flow measurement.............................................................................................28

4.4 Configure Flow Direction .......................................................................................................... 33

4.5 Configure density measurement ...............................................................................................38

4.6 Configure temperature measurement....................................................................................... 41

4.7 Configure the petroleum measurement application.................................................................. 43

4.8 Set up concentration measurement ..........................................................................................48

4.9 Configure pressure compensation............................................................................................. 55

Chapter 5 Configure device options and preferences................................................................ 61

5.1 Configure response time parameters.........................................................................................61

5.2 Configure alert handling............................................................................................................ 63

5.3 Configure informational parameters..........................................................................................68

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February 2022 MMI-20019038

Chapter 6 Integrate the meter with the control system............................................................ 71

6.1 Configure the transmitter channels........................................................................................... 71

6.2 Configure the mA Output.......................................................................................................... 72

6.3 Configure the Frequency Output............................................................................................... 80

6.4 Configure the Discrete Output...................................................................................................85

6.5 Configure the Discrete Input......................................................................................................89

6.6 Configure events....................................................................................................................... 91

6.7 Configure digital communications.............................................................................................94

Chapter 7 Complete the configuration................................................................................... 103

7.1 Test or tune the system using sensor simulation......................................................................103

7.2 Back up transmitter configuration........................................................................................... 105

7.3 Enable write-protection on the transmitter configuration........................................................105

Chapter 8 Set up the Weights & Measures application............................................................ 107

8.1 Weights & Measures application.............................................................................................. 107

8.2 Set up the Weights & Measures application using ProLink III ....................................................108

Part III Operations, maintenance, and troubleshooting

Chapter 9 Transmitter operation............................................................................................113

9.1 Record the process variables....................................................................................................113

9.2 View process variables............................................................................................................. 113

9.3 View transmitter status using the status LED........................................................................... 114

9.4 View and acknowledge status alerts........................................................................................ 114

9.5 Read totalizer and inventory values..........................................................................................116

9.6 Start and stop totalizers and inventories.................................................................................. 116

9.7 Reset totalizers........................................................................................................................ 117

9.8 Reset inventories..................................................................................................................... 117

Chapter 10 Operate the transmitter with the Weights & Measures application.........................119

10.1 Operate the transmitter when the Weights & Measures application is installed..................... 119

10.2 Switch between secured and unsecured mode...................................................................... 123

10.3 Clear Status Alarm A027: Security Breach.............................................................................. 125

10.4 Replacing the core processor in a Weights & Measures installation........................................ 125

Chapter 11 Measurement support............................................................................................127

11.1 Options for measurement support........................................................................................ 127

11.2 Use Smart Meter Verification................................................................................................. 127

11.3 Use Production Volume Reconciliation, Transient Mist Remediation, and Transient Bubble

Remediation............................................................................................................................. 133

11.4 Piecewise linearization (PWL) for calibrating gas meters........................................................ 134

11.5 Use the fuel consumption application....................................................................................134

11.6 Zero the meter...................................................................................................................... 135

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11.7 Validate the meter.................................................................................................................135

11.8 Perform a (standard) D1 and D2 density calibration...............................................................137

11.9 Perform a D3 and D4 density calibration (T-Series sensors only)............................................ 140

11.10 Perform temperature calibration......................................................................................... 142

Chapter 12 Troubleshooting.................................................................................................... 145

12.1 Status LED states................................................................................................................... 145

12.2 Check the core processor LED................................................................................................ 145

12.3 Perform a 700 core processor resistance test.........................................................................147

12.4 Check the cutoffs...................................................................................................................148

12.5 Density measurement problems............................................................................................148

12.6 Discrete Input problems........................................................................................................ 149

12.7 Discrete output problems......................................................................................................149

12.8 Check the drive gain.............................................................................................................. 150

12.9 Check for internal electrical problems....................................................................................151

12.10 Check Flow Direction .......................................................................................................... 153

12.11 Flow measurement problems ............................................................................................. 153

12.12 Frequency Output problems................................................................................................156

12.13 Check Frequency Output Mode ...........................................................................................156

12.14 Check Frequency Output Fault Action .................................................................................157

12.15 Check Frequency Output Scaling Method ........................................................................... 157

12.16 Check grounding................................................................................................................. 157

12.17 Check the HART communication loop................................................................................. 158

12.18 Check HART Address and mA Output Action........................................................................158

12.19 Check HART burst mode......................................................................................................159

12.20 Perform loop tests............................................................................................................... 159

12.21 Check Lower Range Value and Upper Range Value ..............................................................162

12.22 Check mA Output Fault Action ............................................................................................162

12.23 Milliamp output problems................................................................................................... 163

12.24 Trim mA Output.................................................................................................................. 165

12.25 Check the pickoff voltage.................................................................................................... 166

12.26 Check power supply wiring.................................................................................................. 167

12.27 Check for radio frequency interference (RFI)........................................................................ 167

12.28 Using sensor simulation for troubleshooting....................................................................... 168

12.29 Check sensor-to-transmitter wiring..................................................................................... 168

12.30 Check for two-phase flow (slug flow)................................................................................... 168

12.31 Status alerts, causes, and recommendations....................................................................... 169

12.32 Temperature measurement problems.................................................................................185

Appendix A Using ProLink III with the transmitter.....................................................................187

A.1 Basic information about ProLink III ..........................................................................................187

A.2 Connect with ProLink III .......................................................................................................... 188

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Appendix B Using a field communicator with the transmitter................................................... 197

B.1 Basic information about field communicators..........................................................................197

B.2 Connect with a field communicator ........................................................................................ 198

Appendix C Default values and ranges...................................................................................... 201

C.1 Default values and ranges........................................................................................................201

Appendix D Transmitter components and installation wiring.................................................... 207

D.1 Installation types.....................................................................................................................207

D.2 Power supply terminals .......................................................................................................... 209

D.3 Input/output (I/O) wiring terminals......................................................................................... 210

Appendix E NE 53 history..........................................................................................................211

E.1 NE 53 history............................................................................................................................211

6 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Getting started

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Part I
Getting started

Configuration and Use Manual 7

Getting started Configuration and Use Manual

February 2022 MMI-20019038

8 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Before you begin

MMI-20019038 February 2022

1 Before you begin

1.1 About this manual

This manual helps you configure, commission, use, maintain, and troubleshoot the 2500 transmitter.

Important

This manual assumes that:

• The transmitter has been installed correctly and completely according to the instructions in the

transmitter installation manual

• Users understand basic transmitter and sensor installation, configuration, and maintenance concepts and

procedures

1.2 Transmitter model code

You can verify that this manual pertains to your transmitter by ensuring the model code on the transmitter
tag matches the format.

Example:

The transmitter has a model number of the following form: 2500D**B****** or 2500D**C******

D

4-wire remote DIN rail–mount

B

Configurable input/outputs option board, default configuration (two mA outputs, one frequency output)

C

Configurable input/outputs option board, custom configuration

1.3 Communications tools and protocols

You must have a communications tool to interface with the transmitter. Several different communications
tools and protocols are supported. You may use different tools in different locations or for different tasks.

Communications tool

ProLink III • HART/Bell 202

Field communicator • HART/Bell 202

Tip

You may be able to use other communications tools, such as AMS™ Suite: Intelligent Device Manager, or the
Smart Wireless THUM™ Adapter. Use of AMS or the Smart Wireless THUM Adapter is not discussed in this
manual. For more information on the Smart Wireless THUM Adapter, refer to the documentation available at .

Supported protocols

• Modbus/RS-485

• Service port

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February 2022 MMI-20019038

1.4 Additional documentation and resources

The following additional documentation supports the installation and operation of the transmitter.

Topic Document

Fuel consumption

Hazardous area installation See the approval documentation shipped with the

Product Data Sheet

Production Volume Reconciliation (PVR), Transient Bubble
Remediation (TBR), and Transient Mist Remediation (TMR)
applications

Sensor Sensor documentation

Transmitter installation

Micro Motion Fuel Consumption Application for Transmitters
Installation and Operation Guide

transmitter, or download the appropriate documentation
at www.emerson.com.

Micro Motion Series 1000 and Series 2000 Transmitters with
MVD™ Technology Product Data Sheet (PDS)

Micro Motion Oil and Gas Production Supplement

Micro Motion Model 1500 and Model 2500 Transmitters:
Installation Manual

All documentation resources are available at www.emerson.com or on the user documentation DVD.

10 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Quick start

MMI-20019038 February 2022

2 Quick start

2.1 Power up the transmitter

The transmitter must be powered up for all configuration and commissioning tasks, or for process
measurement.

Procedure

1. WARNING

To prevent ignition of flammable or combustible atmospheres, ensure that all covers and seals are
tightly closed. For hazardous area installations, applying power while housing covers are removed or
loose can cause an explosion resulting in injury or death.

Ensure that all transmitter and sensor covers and seals are closed.

2. Turn on the electrical power at the power supply.

The transmitter will automatically perform diagnostic routines. The transmitter is self-switching and
will automatically detect the supply voltage. When using DC power, a minimum of 1.5 amps of startup
current is required. During this period, Alert 009 is active. The diagnostic routines should complete in
approximately 30 seconds. The status LED will turn green when the startup diagnostics are complete. If
the status LED exhibits different behavior, an alert is active.

Postrequisites

Although the sensor is ready to receive process fluid shortly after power-up, the electronics can take up to
10 minutes to reach thermal equilibrium. Therefore, if this is the initial startup, or if power has been off long
enough to allow components to reach ambient temperature, allow the electronics to warm up for
approximately 10 minutes before relying on process measurements. During this warm-up period, you may
observe minor measurement instability or inaccuracy.

2.2 Check meter status

Check the meter for any error conditions that require user action or that affect measurement accuracy.

Procedure

1. Wait approximately 10 seconds for the power-up sequence to complete.

Immediately after power-up, the transmitter runs through diagnostic routines and checks for error
conditions. During the power-up sequence, Alert A009 is active. This alert should clear automatically
when the power-up sequence is complete.

2. Check the status LED on the transmitter.

Related information

View and acknowledge status alerts
Status alerts, causes, and recommendations

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2.2.1 Transmitter status reported by LED

Table 2-1: Status LED states

LED state Alarm condition Description

Solid green No alarm Normal operation

Flashing yellow No alarm • Zero calibration procedure is in progress

• Loop test is in progress

Solid yellow Low-severity alarm Alarm condition that will not cause measurement error

(outputs continue to report process data)

Solid red High-severity alarm Alarm condition that will cause measurement error

(outputs in fault)

2.3 Make a startup connection to the transmitter

To configure the transmitter, you must have an active connection from a communications tool. Follow this
procedure to make your first connection to the transmitter.

Procedure

Identify the connection type to use, and follow the instructions for that connection type in the appropriate
appendix. Use the default communications parameters shown in the appendix.

Communications tool

ProLink III Modbus/RS-485 Using ProLink III with the transmitter

Field Communicator HART Using a field communicator with the

Connection type to use Instructions

transmitter

2.4 (Optional) Adjust digital communications settings

Change the communications parameters to site-specific values.

Important

If you are changing communications parameters for the connection type that you are using, you will lose the
connection when you write the parameters to the transmitter. Reconnect using the new parameters.

Procedure

1. To change the communications parameters using ProLink III, choose Device Tools → Configuration →

Communications.

2. To change the communications parameters using the Field Communicator, choose On-Line Menu →

Configure → Manual Setup → Inputs/Outputs → Communications.

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Configuration and Use Manual Quick start

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2.5 Verify mass flow measurement

Check to see that the mass flow rate reported by the transmitter is accurate. You can use any available
method.

Procedure

• Connect to the transmitter with ProLink III and read the value for Mass Flow Rate in the Process Variables

panel.

• Connect to the transmitter with a field communicator and read the value for Mass Flow Rate.

Online → Overview → Mass Flow Rate

Postrequisites

If the reported mass flow rate is not accurate:

• Check the characterization parameters.

• Review the troubleshooting suggestions for flow measurement issues.

2.6 Verify the zero

Verifying the zero helps you determine if the stored zero value is appropriate to your installation, or if a field
zero can improve measurement accuracy.

The zero verification procedure analyzes the Live Zero value under conditions of zero flow, and compares it to
the Zero Stability range for the sensor. If the average Live Zero value is within a reasonable range, the zero
value stored in the transmitter is valid. Performing a field calibration will not improve measurement accuracy.

Important

In most cases, the factory zero is more accurate than the field zero. Do not zero the meter unless one of the
following is true:

• The zero is required by site procedures.

• The stored zero value fails the zero verification procedure.

Do not verify the zero or zero the meter if a high-severity alert is active. Correct the problem, then verify the
zero or zero the meter. You may verify the zero or zero the meter if a low-severity alert is active.

Procedure

1. Allow the flowmeter to warm up for at least 20 minutes after applying power.

2. Run the process fluid through the sensor until the sensor temperature reaches the normal process

operating temperature.

3. Stop flow through the sensor by shutting the downstream valve, and then the upstream valve if

available.

4. Verify that the sensor is blocked in, that flow has stopped, and that the sensor is completely full of

process fluid.

5. From ProLink III, choose Device Tools → Calibration → Zero Verification and Calibration → Verify

Zero and wait until the procedure completes.

6. Observe the drive gain, temperature, and density readings. If they are stable, check the Live Zero or

Field Verification Zero value. If the average value is close to 0, you should not need to zero the meter.

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February 2022 MMI-20019038

7. If the zero verification procedure fails:

a) Confirm that the sensor is completely blocked in, that flow has stopped, and that the sensor is

completely full of process fluid.

b) Verify that the process fluid is not flashing or condensing, and that it does not contain particles

that can settle out.

c) Remove or reduce sources of electromechanical noise if appropriate.

d) Repeat the zero verification procedure.

e) If it fails again, zero the meter.

Postrequisites

Restore normal flow through the sensor by opening the valves.

Related information

Zero the meter

2.6.1 Terminology used with zero verification and zero calibration

Term Definition

Zero In general, the offset required to synchronize the left pickoff and the right pickoff under

conditions of zero flow. Unit = microseconds.

Factory Zero The zero value obtained at the factory, under laboratory conditions.

Field Zero The zero value obtained by performing a zero calibration outside the factory.

Prior Zero The zero value stored in the transmitter at the time a field zero calibration is begun. May

be the factory zero or a previous field zero.

Manual Zero The zero value stored in the transmitter, typically obtained from a zero calibration

procedure. It may also be configured manually. Also called “mechanical zero” or “stored
zero”.

Live Zero The real-time bidirectional mass flow rate with no flow damping or mass flow cutoff

applied. An adaptive damping value is applied only when the mass flow rate changes
dramatically over a very short interval. Unit = configured mass flow measurement unit.

Zero Stability A laboratory-derived value used to calculate the expected accuracy for a sensor. Under

laboratory conditions at zero flow, the average flow rate is expected to fall within the
range defined by the Zero Stability value (0 ± Zero Stability). Each sensor size and model
has a unique Zero Stability value.

Zero Calibration The procedure used to determine the zero value.

Zero Time The time period over which the Zero Calibration procedure is performed. Unit = seconds.

Field Verification Zero A 3-minute running average of the Live Zero value, calculated by the transmitter. Unit =

configured mass flow measurement unit.

Zero Verification A procedure used to evaluate the stored zero and determine whether or not a field zero

can improve measurement accuracy.

14 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configuration and commissioning

MMI-20019038 February 2022

Part II
Configuration and commissioning

Configuration and Use Manual 15

Configuration and commissioning Configuration and Use Manual

February 2022 MMI-20019038

16 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Introduction to configuration and commissioning

MMI-20019038 February 2022

3 Introduction to configuration and commissioning

3.1 Configuration flowchart

Use the following flowchart as a general guide to the configuration and commissioning process.

Some options may not apply to your installation. Detailed information is provided in the remainder of this
manual. If you are using the Weights & Measures application, additional configuration and setup are required.

Configure process measurement

Configure mass flow

measurement

Configure device options and
preferences

Configure fault handling

parameters

Test and move to production

Test or tune transmitter
using sensor simulation

Configure volume flow

meaurement

Volume flow type

Liquid

Configure flow direction

Configure density

measurement

Configure temperature

measurement

Configure petroleum

measurement (API)

application (if available)

Configure concentration

measurement application

(if available)

Gas

Define gas properties

Configure sensor

parameters

Configure device

parameters

Integrate device with control system

Configure the channel(s)

Configure the mA

output(s)

Configure the frequency

output(s)

Configure the discrete

output(s)

Back up transmitter

configuration

Enable write-protection on

transmitter configuration

Done

Configure pressure

compensation (optional)

Configure PVR, TMR,

TBR, or fuel consumption

(if available)

Configure events

Configure digital
communications

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3.2 Default values and ranges

See Default values and ranges to view the default values and ranges for the most commonly used parameters.

3.3 Disable write-protection on the transmitter

configuration

Display OFF-LINE MAINT → CONFG → LOCK

ProLink III Device Tools → Configuration → Write-Protection

If the transmitter is write-protected, the configuration is locked and you must unlock it before you can change
any configuration parameters. By default, the transmitter is not write-protected.

Tip

Write-protecting the transmitter prevents accidental changes to configuration. It does not prevent normal
operational use. You can always disable write-protection, perform any required configuration changes, then
re-enable write-protection.

3.4 Restore the factory configuration

ProLink III Device Tools → Configuration Transfer → Restore Factory Configuration

Field communicator Service Tools → Maintenance → Reset/Restore → Restore Factory Configuration

Restoring the factory configuration returns the transmitter to the same configuration it had when it left the
factory. This may be useful if you experience problems during configuration.

Important

You cannot restore factory configurations with a 700 core.

Tip

Restoring the factory configuration is not a common action. You may want to contact customer support to
see if there is a preferred method to resolve any issues.

18 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

4 Configure process measurement

4.1 Configure mass flow measurement

The mass flow measurement parameters control how mass flow is measured and reported.

4.1.1 Configure Mass Flow Measurement Unit

ProLink III Device Tools → Configuration → Process Measurement → Flow

Field Communicator Configure → Manual Setup → Measurements → Flow → Mass Flow Unit

Mass Flow Measurement Unit specifies the unit of measure that will be used for the mass flow rate. The unit
used for mass total and mass inventory is derived from this unit.

Any selected measurement unit, (mass, volume or gas standard volume), is automatically applied to both the
mA and Frequency Outputs.

Procedure

Set Mass Flow Measurement Unit to the unit you want to use.

The default setting for Mass Flow Measurement Unit is g/sec (grams per second).

Tip

If the measurement unit you want to use is not available, you can define a special measurement unit.

Options for Mass Flow Measurement Unit

The transmitter provides a standard set of measurement units for Mass Flow Measurement Unit, plus one
user-defined special measurement unit. Different communications tools may use different labels for the
units.

Label

Unit description

Grams per second g/sec g/s

Grams per minute g/min g/min

Grams per hour g/hr g/h

Kilograms per second kg/sec kg/s

Kilograms per minute kg/min kg/min

Kilograms per hour kg/hr kg/h

ProLink III Field Communicator

Kilograms per day kg/day kg/d

Metric tons per minute mTon/min MetTon/min

Metric tons per hour mTon/hr MetTon/h

Metric tons per day mTon/day MetTon/d

Pounds per second lbs/sec lb/s

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Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

Label

Unit description

Pounds per minute lbs/min lb/min

Pounds per hour lbs/hr lb/h

Pounds per day lbs/day lb/d

Short tons (2000 pounds) per minute sTon/min STon/min

Short tons (2000 pounds) per hour sTon/hr STon/h

Short tons (2000 pounds) per day sTon/day STon/d

Long tons (2240 pounds) per hour lTon/hr LTon/h

Long tons (2240 pounds) per day lTon/day LTon/d

Special unit special Spcl

ProLink III Field Communicator

Define a special measurement unit for mass flow

ProLink III Device Tools → Configuration → Process Measurement → Flow → Special Units

Field Communicator Configure → Manual Setup → Measurements → Special Units → Mass Special Units

A special measurement unit is a user-defined unit of measure that allows you to report process data, totalizer
data, and inventory data in a unit that is not available in the transmitter. A special measurement unit is
calculated from an existing measurement unit using a conversion factor.

Procedure

1. Specify Base Mass Unit.

Base Mass Unit is the existing mass unit that the special unit will be based on.

2. Specify Base Time Unit.

Base Time Unit is the existing time unit that the special unit will be based on.

3. Calculate Mass Flow Conversion Factor as follows:

a) x base units = y special units

b) Mass Flow Conversion Factor = x ÷ y

The original mass flow rate value is divided by this value.

4. Enter Mass Flow Conversion Factor.

5. Set Mass Flow Label to the name you want to use for the mass flow unit.

6. Set Mass Total Label to the name you want to use for the mass total and mass inventory unit.

The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.

Example: Defining a special measurement unit for mass flow

You want to measure mass flow in ounces per second (oz/sec).

1. Set Base Mass Unit to Pounds (lb).

20 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

2. Set Base Time Unit to Seconds (sec).

3. Calculate Mass Flow Conversion Factor:

a. 1 lb/sec = 16 oz/sec

b. Mass Flow Conversion Factor = 1 ÷ 16 = 0.0625

4. Set Mass Flow Conversion Factor to 0.0625.

5. Set Mass Flow Label to oz/sec.

6. Set Mass Total Label to oz.

4.1.2 Configure Flow Damping

ProLink III Device Tools → Configuration → Process Measurement → Flow

Field Communicator Configure → Manual Setup → Measurements → Flow → Flow Damping

Damping is used to smooth out small, rapid fluctuations in process measurement. Damping Value specifies
the time period (in seconds) over which the transmitter will spread changes in the process variable. At the end
of the interval, the internal value will reflect 63% of the change in the actual measured value.

Procedure

Set Flow Damping to the value you want to use.

The default value is 0.8 seconds. The range depends on the core processor type and the setting of Update
Rate, as shown in the following table.

Update Rate setting

Normal 0 to 51.2 seconds

Special 0 to 40.96 seconds

Damping range

The value you enter is automatically rounded off to the nearest valid value. For example, if the damping is
currently set to 0.8 seconds, any value entered up to 1.2 seconds will be rounded down to 0.8 seconds, and
any value entered from 1.21 to 1.59 seconds will be rounded up to 1.6 seconds.

Update Rate setting

Normal 0.0, 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8, 25.6, 51.2

Special 0.0, 0.04, 0.08, 0.16, 0.32, 0.64, 1.28, 2.56, 5.12, 10.24,

Valid damping values

20.48, 40.96

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Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

Effect of flow damping on volume measurement

Flow damping affects volume measurement for liquid volume data. Flow damping also affects volume
measurement for gas standard volume data. The transmitter calculates volume data from the damped mass
flow data.

Interaction between Flow Damping and mA Output Damping

In some circumstances, both Flow Damping and mA Output Damping are applied to the reported mass flow
value.

Flow Damping controls the rate of change in flow process variables. mA Output Damping controls the rate
of change reported through mA Output. If mA Output Process Variable is set to Mass Flow Rate, and both
Flow Damping and mA Output Damping are set to non-zero values, flow damping is applied first, and the
added damping calculation is applied to the result of the first calculation.

4.1.3 Configure Mass Flow Cutoff

ProLink III Device Tools → Configuration → Process Measurement → Flow

Field Communicator Configure → Manual Setup → Measurements → Flow → Mass Flow Cutoff

Mass Flow Cutoff specifies the lowest mass flow rate that will be reported as measured. All mass flow rates
below this cutoff will be reported as 0.

Procedure

Set Mass Flow Cutoff to the value you want to use.

The default value for Mass Flow Cutoff is 0.0 g/sec or a sensor-specific value set at the factory. The
recommended value is 0.5% of the nominal flow rate of the attached sensor. See the sensor specifications. Do
not leave Mass Flow Cutoff at 0.0 g/sec.

Effect of Mass Flow Cutoff on volume measurement

Mass Flow Cutoff does not affect volume measurement. Volume data is calculated from the actual mass data
rather than the reported value.

Volume flow has a separate Volume Flow Cutoff that is not affected by the Mass Flow Cutoff value.

Interaction between Mass Flow Cutoff and mA Output Cutoff

Mass Flow Cutoff defines the lowest mass flow value that the transmitter will report as measured. mA
Output Cutoff defines the lowest flow rate that will be reported through mA Output. If mA Output Process
Variable is set to Mass Flow Rate, the mass flow rate reported through mA Output is controlled by the higher

of the two cutoff values.

Mass Flow Cutoff affects all reported values and values used in other transmitter behavior (e.g., events
defined on mass flow).

mA Output Cutoff affects only mass flow values reported through mA Output.

22 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Example: Cutoff interaction with mA Output Cutoff lower than Mass Flow Cutoff

Configuration:

• mA Output Process Variable: Mass Flow Rate

• Frequency Output Process Variable: Mass Flow Rate

• mA Output Cutoff: 10 g/sec

• Mass Flow Cutoff: 15 g/sec

Result: If the mass flow rate drops below 15 g/sec, mass flow will be reported as 0, and 0 will be used in all
internal processing.

Example: Cutoff interaction with mA Output Cutoff higher than Mass Flow Cutoff

Configuration:

• mA Output Process Variable: Mass Flow Rate

• Frequency Output Process Variable: Mass Flow Rate

• mA Output Cutoff: 15 g/sec

• Mass Flow Cutoff: 10 g/sec

Result:

• If the mass flow rate drops below 15 g/sec but not below 10 g/sec:
— The mA Output will report zero flow.

— The Frequency Output will report the actual flow rate, and the actual flow rate will be used in all

internal processing.

• If the mass flow rate drops below 10 g/sec, both outputs will report zero flow, and 0 will be used in all

internal processing.

4.2 Configure volume flow measurement for liquid

applications

The volume flow measurement parameters control how liquid volume flow is measured and reported.

Restriction

You cannot implement both liquid volume flow and gas standard volume flow at the same time. Choose one
or the other.

Note

If you need to switch from gas standard volume to liquid volume, polling for base density will automatically be
disabled.

4.2.1 Configure Volume Flow Type for liquid applications

ProLink III

Field Communicator Configure → Manual Setup → Measurements → GSV → Volume Flow Type → Liquid

Configuration and Use Manual 23

Device Tools → Configuration → Process Measurement → Flow

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

Volume Flow Type controls whether liquid or gas standard volume flow measurement will be used.

Restriction

Gas standard volume measurement is incompatible with some applications. Set Volume Flow Type to Liquid
if you are using any of the following applications:

• Petroleum measurement

• Concentration measurement

• Fuel consumption

• Production Volume Reconciliation (PVR)

Procedure

Set Volume Flow Type to Liquid.

4.2.2 Configure Volume Flow Measurement Unit for liquid

applications

ProLink III Device Tools → Configuration → Process Measurement → Flow

Field Communicator Configure → Manual Setup → Measurements → Flow → Volume Flow Unit

Volume Flow Measurement Unit specifies the unit of measurement that will be displayed for the volume
flow rate. The unit used for the volume total and volume inventory is based on this unit.

Prerequisites

Before you configure Volume Flow Measurement Unit, be sure that Volume Flow Type is set to Liquid.

Procedure

Set Volume Flow Measurement Unit to the unit you want to use.

To read US gallons, select that unit from this menu. G/MIN stands for grams per minute (USGPM), not gallons
per minute. The default setting for Volume Flow Measurement Unit is l/sec (liters per second).

Tip

If the measurement unit you want to use is not available, you can define a special measurement unit.

Options for Volume Flow Measurement Unit for liquid applications

The transmitter provides a standard set of measurement units for Volume Flow Measurement Unit, plus one
user-defined measurement unit. Different communications tools may use different labels for the units.

Label

Unit description

Cubic feet per second ft3/sec Cuft/s

Cubic feet per minute ft3/min Cuft/min

Cubic feet per hour ft3/hr Cuft/h

Cubic feet per day ft3/day Cuft/d

24 Micro Motion 2500 Transmitters with Configurable Input/Outputs

ProLink III Field Communicator

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Label

Unit description

ProLink III Field Communicator

Cubic meters per second m3/sec Cum/s

Cubic meters per minute m3/min Cum/min

Cubic meters per hour m3/hr Cum/h

Cubic meters per day m3/day Cum/d

U.S. gallons per second US gal/sec gal/s

U.S. gallons per minute US gal/min gal/min

U.S. gallons per hour US gal/hr gal/h

U.S. gallons per day US gal/day gal/d

Million U.S. gallons per day mil US gal/day MMgal/d

Liters per second l/sec L/s

Liters per minute l/min L/min

Liters per hour l/hr L/h

Million liters per day mil l/day ML/d

Imperial gallons per second Imp gal/sec Impgal/s

Imperial gallons per minute Imp gal/min Impgal/min

Imperial gallons per hour Imp gal/hr Impgal/h

Imperial gallons per day Imp gal/day Impgal/d

(1)

(1)

(1)

(1)

(2)

(2)

(2)

(2)

barrels/sec bbl/s

barrels/min bbl/min

barrels/hr bbl/h

barrels/day bbl/d

Beer barrels/sec bbbl/s

Beer barrels/min bbbl/min

Beer barrels/hr bbbl/h

Beer barrels/day bbbl/d

Barrels per second

Barrels per minute

Barrels per hour

Barrels per day

Beer barrels per second

Beer barrels per minute

Beer barrels per hour

Beer barrels per day

Special unit special Spcl

(1) Unit based on oil barrels (42 U.S. gallons).
(2) Unit based on U.S. beer barrels (31 U.S. gallons).

Define a special measurement unit for volume flow

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Special Units → Volume Special Units

Device Tools → Configuration → Process Measurement → Flow → Special Units

Configuration and Use Manual 25

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

A special measurement unit is a user-defined unit of measure that allows you to report process data, totalizer
data, and inventory data in a unit that is not available in the transmitter. A special measurement unit is
calculated from an existing measurement unit using a conversion factor.

Note

Procedure

1. Specify Base Volume Unit.

Base Volume Unit is the existing volume unit that the special unit will be based on.

2. Specify Base Time Unit.

Base Time Unit is the existing time unit that the special unit will be based on.

3. Calculate Volume Flow Conversion Factor as follows:

a) x base units = y special units

b) Volume Flow Conversion Factor = x ÷ y

4. Enter Volume Flow Conversion Factor.

The original volume flow rate value is divided by this conversion factor.

5. Set Volume Flow Label to the name you want to use for the volume flow unit.

6. Set Volume Total Label to the name you want to use for the volume total and volume inventory unit.

The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.

Defining a special measurement unit for volume flow

You want to measure volume flow in pints per second (pints/sec).

1. Set Base Volume Unit to Gallons (gal).

2. Set Base Time Unit to Seconds (sec).

3. Calculate the conversion factor:

a. 1 gal/sec = 8 pints/sec

b. Volume Flow Conversion Factor = 1 ÷ 8 = 0.1250

4. Set Volume Flow Conversion Factor to 0.1250.

5. Set Volume Flow Label to pints/sec.

6. Set Volume Total Label to pints.

4.2.3 Configure Volume Flow Cutoff

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Flow → Volume Flow Cutoff

26 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Device Tools → Configuration → Process Measurement → Flow

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Volume Flow Cutoff specifies the lowest volume flow rate that will be reported as measured. All volume flow
rates below this cutoff are reported as 0.

Procedure

Set Volume Flow Cutoff to the value you want to use.

The default value for Volume Flow Cutoff is 0.0 l/sec (liters per second). The lower limit is 0. Leaving the
volume flow cutoff at 0 is not recommended.

Interaction between Volume Flow Cutoff and mAO Cutoff

Volume Flow Cutoff defines the lowest liquid volume flow value that the transmitter will report as measured.
mAO Cutoff defines the lowest flow rate that will be reported through mA Output. If mA Output Process
Variable is set to Volume Flow Rate, the volume flow rate reported through mA Output is controlled by the

higher of the two cutoff values.

Volume Flow Cutoff affects both the volume flow values reported via the outputs and the volume flow values
used in other transmitter behavior (e.g., events defined on the volume flow).

mAO Cutoff affects only flow values reported through mA Output.

Example: Cutoff interaction with mAO Cutoff lower than Volume Flow Cutoff

Configuration:

• mA Output Process Variable: Volume Flow Rate

• Frequency Output Process Variable: Volume Flow Rate

• AO Cutoff: 10 l/sec

• Volume Flow Cutoff: 15 l/sec

Result: If the volume flow rate drops below 15 l/sec, volume flow will be reported as 0, and 0 will be used in all
internal processing.

Example: Cutoff interaction with mAO Cutoff higher than Volume Flow Cutoff

Configuration:

• mA Output Process Variable: Volume Flow Rate

• Frequency Output Process Variable: Volume Flow Rate

• AO Cutoff: 15 l/sec

• Volume Flow Cutoff: 10 l/sec

Result:

• If the volume flow rate drops below 15 l/sec but not below 10 l/sec:
— The mA Output will report zero flow.

— The Frequency Output will report the actual flow rate, and the actual flow rate will be used in all

internal processing.

• If the volume flow rate drops below 10 l/sec, both outputs will report zero flow, and 0 will be used in all

internal processing.

Configuration and Use Manual 27

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

4.3 Configure GSV flow measurement

The gas standard volume (GSV) flow measurement parameters control how volume flow is measured and
reported in a gas application.

Restriction

You cannot implement both liquid volume flow and gas standard volume flow at the same time. Choose one
or the other.

4.3.1 Configure Volume Flow Type for gas applications

ProLink III Device Tools → Configuration → Process Measurement → Flow

Field Communicator Configure → Manual Setup → Measurements → GSV → Volume Flow Type → Standard Gas Volume

Volume Flow Type controls whether liquid or gas standard volume flow measurement is used.

Restriction

Gas standard volume measurement is incompatible with some applications. Set Volume Flow Type to Liquid
if you are using any of the following applications:

• Petroleum measurement

• Concentration measurement

• Fuel consumption

• Production Volume Reconciliation (PVR)

Procedure

Set Volume Flow Type to Gas Standard Volume.

4.3.2 Configure Standard Density of Gas

ProLink III

Field Communicator Configure → Manual Setup → Measurements → GSV → Gas Ref Density

The Standard Density of Gas value is the gas density at standard reference conditions. Use it to convert the
measured mass flow data to volume flow at reference conditions.

Prerequisites

Ensure that Density Measurement Unit is set to the measurement unit you want to use for Standard Density
of Gas.

Procedure

From the Source field, choose the method to supply gas base density data and perform the required setup.

Device Tools → Configuration → Process Measurement → Flow

Option

Fixed Value or Digital
Communications

28 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Description

A host writes gas base density data to the meter at appropriate intervals.
Continue to Configure fixed value or digital communications.

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Option Description

Poll for external value The meter polls an external HART device for gas base density data in order

to then compute gas standard volume from the mass flow and gas base
density.

Continue to Poll for external value.

Configure fixed value or digital communications

Prerequisites

Configure Standard Density of Gas

Procedure

1. Set Standard Density of Gas to the standard reference density of the gas you are measuring.

Note

ProLink III provides a guided method that you can use to calculate your gas base density, if you do not
know it.

2. Continue to Configure Gas Standard Volume Flow Unit .

Poll for external value

Prerequisites

Configure Standard Density of Gas

Procedure

1. Set Polling Slot to an available slot.

2. Set Polling Control n as one of the following options:

The n is the value you selected in the Polling Slot field.

If there is another master, and if that master is primary, then set this field to secondary. If the other
master is secondary, then set this field to primary.

Option

Poll as Primary No other HART masters will be on the network.

Poll as Secondary Other HART masters will be on the network.

3. Set External Device Tag n to the HART tag of the device being polled.

The n is the value you selected in the Polling Slot field.

Description

• The device being polled (slave) cannot have special units set for density. Otherwise, the master will

reject the base density and report the following alarm:

A115: No External Input or Polled Data Alert

• On the slave side, setup the HART Primary Variable for Base Density. The master will reject anything

other than Base Density for the HART Primary Variable and trigger an A115 alarm.

Configuration and Use Manual 29

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

• The density units on the transmitter and the polled device can be different as long as they can be

classified as density units; for example, kg/m3 and g/cm3. The transmitter converts the polled units
into compatible specified units.

For wiring and setup instructions for a polled device, refer to the Micro Motion Gas Density Meters (GDM)
Installation manual or the Micro Motion Specific Gravity Meters (SGM) Installation manual.

4. Continue to Configure Gas Standard Volume Flow Unit .

4.3.3 Configure Gas Standard Volume Flow Unit

ProLink III Device Tools → Configuration → Process Measurement → Flow

Field Communicator Configure → Manual Setup → Measurements → GSV → GSV Flow Unit

Gas Standard Volume Flow Unit specifies the unit of measure that will be displayed for the gas standard
volume flow. The measurement unit used for the gas volume total and the gas volume inventory is derived
from this unit.

Prerequisites

Before you configure Gas Standard Volume Flow Unit, be sure that Volume Flow Type is set to Gas Standard
Volume.

For polling, the first transmitter (master) requests density from a second transmitter (slave) via HART
communications. Special units for GSV are allowed on the master side, but the device being polled (slave)
cannot have special units set for density, otherwise the master will reject the base density and report an A115:
No External Input or Polled Data Alert.

Procedure

Set Gas Standard Volume Flow Unit to the unit you want to use.

The default setting for Gas Standard Volume Flow Unit is SCFM (Standard Cubic Feet per Minute).

Tip

If the measurement unit you want to use is not available, you can define a special measurement unit.

Options for Gas Standard Volume Flow Unit

The transmitter provides a standard set of measurement units for Gas Standard Volume Flow Unit, plus one
user-defined special measurement unit. Different communications tools may use different labels for the
units.

Label

Unit description

Normal cubic meters per second Nm3/sec Nm3/sec

ProLink III Field Communicator

Normal cubic meters per minute Nm3/sec Nm3/min

Normal cubic meters per hour Nm3/hr Nm3/hr

Normal cubic meters per day Nm3/day Nm3/day

Normal liters per second NLPS NLPS

Normal liters per minute NLPM NLPM

30 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Label

Unit description

Normal liters per hour NLPH NLPH

Normal liters per day NLPD NLPD

Standard cubic feet per second SCFS SCFS

Standard cubic feet per minute SCFM SCFM

Standard cubic feet per hour SCFH SCFH

Standard cubic feet per day SCFD SCFD

Standard cubic meters per second Sm3/sec Sm3/sec

Standard cubic meters per minute Sm3/min Sm3/min

Standard cubic meters per hour Sm3/hr Sm3/hr

Standard cubic meters per day Sm3/day Sm3/day

Standard liters per second SLPS SLPS

Standard liters per minute SLPM SLPM

Standard liters per hour SLPH SLPH

Standard liters per day SLPD SLPD

Special measurement unit special Special

ProLink III Field Communicator

Define a special measurement unit for gas standard volume flow

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Special Units → Special GSV Units

A special measurement unit is a user-defined unit of measure that allows you to report process data, totalizer
data, and inventory data in a unit that is not available in the transmitter. A special measurement unit is
calculated from an existing measurement unit using a conversion factor.

Procedure

1. Specify Base Gas Standard Volume Unit.

Base Gas Standard Volume Unit is the existing gas standard volume unit that the special unit will be

based on.

2. Specify Base Time Unit.

Base Time Unit is the existing time unit that the special unit will be based on.

3. Calculate Gas Standard Volume Flow Conversion Factor as follows:

a) x base units = y special units

b) Gas Standard Volume Flow Conversion Factor = x ÷ y

4. Enter the Gas Standard Volume Flow Conversion Factor.

The original gas standard volume flow value is divided by this conversion factor.

Device Tools → Configuration → Process Measurement → Flow → Special Units

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February 2022 MMI-20019038

5. Set Gas Standard Volume Flow Label to the name you want to use for the gas standard volume flow
unit.

6. Set Gas Standard Volume Total Label to the name you want to use for the gas standard volume total
and gas standard volume inventory unit.

The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.

Example: Defining a special measurement unit for gas standard volume flow

You want to measure gas standard volume flow in thousands of standard cubic feet per minute.

1. Set Base Gas Standard Volume Unit to SCF.

2. Set Base Time Unit to minutes (min).

3. Calculate the conversion factor:

a. 1 thousands of standard cubic feet per minute = 1000 cubic feet per minute

b. Gas Standard Volume Flow Conversion Factor = 1 ÷ 1000 = 0.001 standard

4. Set Gas Standard Volume Flow Conversion Factor to 0.001.

5. Set Gas Standard Volume Flow Label to MSCFM.

6. Set Gas Standard Volume Total Label to MSCF.

4.3.4 Configure Gas Standard Volume Flow Cutoff

ProLink III

Field Communicator Configure → Manual Setup → Measurements → GSV → GSV Cutoff

Gas Standard Volume Flow Cutoff specifies the lowest gas standard volume flow rate that will reported as
measured. All gas standard volume flow rates below this cutoff will be reported as 0.

Procedure

Set Gas Standard Volume Flow Cutoff to the value you want to use.

The default value for Gas Standard Volume Flow Cutoff is 0.0. The lower limit is 0.0. There is no upper limit.
The recommended value is 0.5% of the nominal flow rate of the attached sensor. See the sensor
specifications.

Interaction between Gas Standard Volume Flow Cutoff and mA Output Cutoff

Gas Standard Volume Flow Cutoff defines the lowest Gas Standard Volume flow value that the transmitter
will report as measured. mA Output Cutoff defines the lowest flow rate that will be reported through mA
Output. If mA Output Process Variable is set to Gas Standard Volume Flow Rate, the volume flow rate
reported through mA Output is controlled by the higher of the two cutoff values.

Device Tools → Configuration → Process Measurement → Flow

Gas Standard Volume Flow Cutoff affects both the gas standard volume flow values reported through

outputs and the gas standard volume flow values used in other transmitter behavior (for example, events
defined on gas standard volume flow).

32 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

mA Output Cutoff affects only flow values reported through mA Output.

Example: Cutoff interaction with mA Output Cutoff lower than Gas Standard Volume Flow Cutoff

Configuration:

• mA Output Process Variable for the primary mA Output: Gas Standard Volume Flow Rate

• Frequency Output Process Variable: Gas Standard Volume Flow Rate

• mA Output Cutoff for the primary mA Output: 10 SLPM (standard liters per minute)

• Gas Standard Volume Flow Cutoff: 15 SLPM

Result: If the gas standard volume flow rate drops below 15 SLPM, the volume flow will be reported as 0, and 0
will be used in all internal processing.

Example: Cutoff interaction with mA Output Cutoff higher than Gas Standard Volume Flow Cutoff

Configuration:

• mA Output Process Variable for the primary mA Output: Gas Standard Volume Flow Rate

• Frequency Output Process Variable: Gas Standard Volume Flow Rate

• mA Output Cutoff for the primary mA Output: 15 SLPM (standard liters per minute)

• Gas Standard Volume Flow Cutoff: 10 SLPM

Result:

• If the gas standard volume flow rate drops below 15 SLPM but not below 10 SLPM:
— The primary mA Output will report zero flow.

— The Frequency Output will report the actual flow rate, and the actual flow rate will be used in all

internal processing.

• If the gas standard volume flow rate drops below 10 SLPM, both outputs will report zero flow, and 0 will be

used in all internal processing.

4.4 Configure Flow Direction

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Flow → Flow Direction

Flow Direction controls how forward flow and reverse flow affect flow measurement and reporting.

Flow Direction is defined with respect to the flow arrow on the sensor:

• Forward flow (positive flow) moves in the direction of the flow arrow on the sensor.

• Reverse flow (negative flow) moves in the direction opposite to the flow arrow on the sensor.

Device Tools → Configuration → Process Measurement → Flow

Tip

Micro Motion sensors are bidirectional. Measurement accuracy is not affected by actual flow direction or the
setting of the Flow Direction parameter.

Procedure

Set Flow Direction to the value you want to use.

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Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

The default setting is Forward.

4.4.1 Options for Flow Direction

Flow Direction setting

Relationship to Flow Direction arrow on sensorProLink III Field Communicator

Forward Forward Appropriate when the Flow Direction arrow is in

the same direction as the majority of flow.

Reverse Reverse Appropriate when the Flow Direction arrow is in

the opposite direction from the majority of flow.

Absolute Value Absolute Value Flow Direction arrow is not relevant.

Bidirectional Bi directional Appropriate when both forward and reverse flow

are expected, and forward flow will dominate, but
the amount of reverse flow will be significant.

Negate Forward Negate/Forward Only Appropriate when the Flow Direction arrow is in

the opposite direction from the majority of flow.

Negate Bidirectional Negate/Bi-directional Appropriate when both forward and reverse flow

are expected, and reverse flow will dominate, but
the amount of forward flow will be significant.

Effect of Flow Direction on mA Outputs

Flow Direction affects how the transmitter reports flow values via the mA Outputs. The mA Outputs are
affected by Flow Direction only if mA Output Process Variable is set to a flow variable.

Flow Direction and mA Outputs

The effect of Flow Direction on the mA Outputs depends on Lower Range Value configured for the mA
Output:

• If Lower Range Value is set to 0, see Figure 4-1.

• If Lower Range Value is set to a negative value, see Figure 4-2.

34 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Figure 4-1: Effect of Flow Direction on the mA Output: Lower Range Value = 0

Flow Direction = Forward

20

12

mA output

4

-x 0 x

Reverse flow Forward flow

Flow Direction = Reverse, Negate Forward

20

12

mA output

4

-x 0 x

Reverse flow Forward flow

Flow Direction = Absolute Value, Bidirectional,
Negate Bidirectional

20

12

mA output

4

• Lower Range Value = 0

• Upper Range Value = x

Figure 4-2: Effect of Flow Direction on the mA Output: Lower Range Value < 0

Flow Direction = Forward

20

Flow Direction = Reverse, Negate Forward

20

Flow Direction = Absolute Value, Bidirectional,
Negate Bidirectional

20

-x 0 x

Reverse flow Forward flow

12

mA output

4

-x 0 x

Reverse flow Forward flow

12

mA output

4

-x 0 x

Reverse flow Forward flow

12

mA output

4

-x 0 x

Reverse flow Forward flow

• Lower Range Value = −x

• Upper Range Value = x

Flow Direction = Forward and Lower Range Value = 0

Configuration:

• Flow Direction = Forward

• Lower Range Value = 0 g/sec

• Upper Range Value = 100 g/sec

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February 2022 MMI-20019038

Result:

• Under conditions of zero flow, the mA Output is 4 mA.

• Under conditions of forward flow, up to a flow rate of 100 g/sec, the mA Output varies between 4 mA and

20 mA in proportion to the flow rate.

• Under conditions of forward flow, if the flow rate equals or exceeds 100 g/sec, the mA Output will be

proportional to the flow rate up to 20.5 mA, and will be level at 20.5 mA at higher flow rates.

Flow Direction = Forward and Lower Range Value < 0

Configuration:

• Flow Direction = Forward

• Lower Range Value = −100 g/sec

• Upper Range Value = +100 g/sec

Result:

• Under conditions of zero flow, the mA Output is 12 mA.

• Under conditions of forward flow, for flow rates between 0 and +100 g/sec, the mA Output varies between

12 mA and 20 mA in proportion to (the absolute value of) the flow rate.

• Under conditions of forward flow, if (the absolute value of) the flow rate equals or exceeds 100 g/sec, the

mA Output is proportional to the flow rate up to 20.5 mA, and will be level at 20.5 mA at higher flow rates.

• Under conditions of reverse flow, for flow rates between 0 and −100 g/sec, the mA Output varies between

4 mA and 12 mA in inverse proportion to the absolute value of the flow rate.

• Under conditions of reverse flow, if the absolute value of the flow rate equals or exceeds 100 g/sec, the mA

Output is inversely proportional to the flow rate down to 3.8 mA, and will be level at 3.8 mA at higher
absolute values.

Flow Direction = Reverse

Configuration:

• Flow Direction = Reverse

• Lower Range Value = 0 g/sec

• Upper Range Value = 100 g/sec

Result:

• Under conditions of zero flow, the mA Output is 4 mA.

• Under conditions of reverse flow, for flow rates between 0 and +100 g/sec, the mA Output level varies

between 4 mA and 20 mA in proportion to the absolute value of the flow rate.

• Under conditions of reverse flow, if the absolute value of the flow rate equals or exceeds 100 g/sec, the mA

Output will be proportional to the absolute value of the flow rate up to 20.5 mA, and will be level at

20.5 mA at higher absolute values.

36 Micro Motion 2500 Transmitters with Configurable Input/Outputs

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MMI-20019038 February 2022

Effect of flow direction on Frequency Outputs

Flow direction affects how the transmitter reports flow values via the Frequency Outputs. The Frequency
Outputs are affected by flow direction only if Frequency Output Process Variable is set to a flow variable.

Table 4-1: Effect of the flow direction parameter and actual flow direction on Frequency Outputs

Actual flow direction

Flow Direction setting

Forward Hz > 0 0 Hz 0 Hz

Reverse 0 Hz 0 Hz Hz > 0

Bidirectional Hz > 0 0 Hz Hz > 0

Absolute Value Hz > 0 0 Hz Hz > 0

Negate Forward 0 Hz 0 Hz Hz > 0

Negate Bidirectional Hz > 0 0 Hz Hz > 0

Forward Zero flow Reverse

Effect of flow direction on Discrete Outputs

The flow direction parameter affects the Discrete Output behavior only if Discrete Output Source is set to
Flow Direction.

Table 4-2: Effect of the flow direction parameter and actual flow direction on Discrete Outputs

Actual flow direction

Flow Direction setting

Forward OFF OFF ON

Reverse OFF OFF ON

Bidirectional OFF OFF ON

Absolute Value OFF OFF ON

Negate Forward ON OFF OFF

Negate Bidirectional ON OFF OFF

Forward Zero flow Reverse

Effect of flow direction on digital communications

Flow direction affects how flow values are reported via digital communications. The following table describes
the effect of the flow direction parameter and actual flow direction on flow values reported via digital
communications.

Table 4-3: Effect of the flow direction on flow values

Actual flow direction

Flow Direction setting

Forward Positive 0 Negative

Reverse Positive 0 Negative

Bidirectional Positive 0 Negative

Configuration and Use Manual 37

Forward Zero flow Reverse

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

Table 4-3: Effect of the flow direction on flow values (continued)

Actual flow direction

Flow Direction setting

Absolute Value Positive

Negate Forward Negative 0 Positive

Negate Bidirectional Negative 0 Positive

(1) Refer to the digital communications status bits for an indication of whether flow is positive or negative.

Forward Zero flow Reverse

(1)

0 Positive

(1)

Effect of flow direction on flow totals

Flow direction affects how flow totals and inventories are calculated.

Actual flow direction

Flow Direction setting

Forward Totals increase Totals do not change Totals do not change

Reverse Totals do not change Totals do not change Totals increase

Bidirectional Totals increase Totals do not change Totals decrease

Absolute Value Totals increase Totals do not change Totals increase

Negate Forward Totals do not change Totals do not change Totals increase

Negate Bidirectional Totals decrease Totals do not change Totals increase

Forward Zero flow Reverse

4.5 Configure density measurement

The density measurement parameters control how density is measured and reported.

4.5.1 Configure Density Measurement Unit

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Density → Density Unit

Density Measurement Unit controls the measurement units that will be used in density calculations and
reporting.

Procedure

Set Density Measurement Unit to the option you want to use.

The default setting for Density Measurement Unit is g/cm3 (grams per cubic centimeter).

Device Tools → Configuration → Process Measurement → Density

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Options for Density Measurement Unit

The transmitter provides a standard set of measurement units for Density Measurement Unit. Different
communications tools may use different labels.

Label

Unit description

Specific gravity unit

Grams per cubic centimeter g/cm3 g/Cucm

Grams per liter g/l g/L

Grams per milliliter g/ml g/mL

Kilograms per liter kg/l kg/L

Kilograms per cubic meter kg/m3 kg/Cum

Pounds per U.S. gallon lbs/Usgal lb/gal

Pounds per cubic foot lbs/ft3 lb/Cuft

Pounds per cubic inch lbs/in3 lb/CuIn

Degrees API degAPI degAPI

Short ton per cubic yard sT/yd3 STon/Cuyd

(1) Non-standard calculation. This value represents line density divided by the density of water at 60 °F.

(1)

ProLink III Field Communicator

SGU SGU

4.5.2 Configure two-phase flow parameters

ProLink III

Field Communicator • Configure → Manual Setup → Measurements → Density → Slug Low Limit

Device Tools → Configuration → Process Measurement → Density

• Configure → Manual Setup → Measurements → Density → Slug High Limit

• Configure → Manual Setup → Measurements → Density → Slug Duration

The two-phase flow parameters control how the transmitter detects and reports two-phase flow (gas in a
liquid process or liquid in a gas process).

Note

Two-phase flow is also referred to as slug flow.

Procedure

1. Set Two-Phase Flow Low Limit to the lowest density value that is considered normal in your process.

Values below this will cause the transmitter to post Alert A105 (Two-Phase Flow).

Tip

Gas entrainment can cause your process density to drop temporarily. To reduce the occurrence of two­phase flow alerts that are not significant to your process, set Two-Phase Flow Low Limit slightly below
your expected lowest process density.

You must enter Two-Phase Flow Low Limit in g/cm³, even if you configured another unit for density
measurement.

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The default value for Two-Phase Flow Low Limit is 0.0 g/cm³. The range is 0.0 to 10.0 g/cm³.

2. Set Two-Phase Flow High Limit to the highest density value that is considered normal in your process.

Micro Motion recommends leaving Two-Phase Flow High Limit at the default value.

Values above this will cause the transmitter to post Alert A105 (Two-Phase Flow).

You must enter Two-Phase Flow High Limit in g/cm³, even if you configured another unit for density
measurement.

The default value for Two-Phase Flow High Limit is 5.0 g/cm³. The range is 0.0 to 10.0 g/cm³.

3. Set Two-Phase Flow Timeout to the number of seconds that the transmitter will wait for a two-phase

flow condition to clear before posting the alert.

The default value for Two-Phase Flow Timeout is 0.0 seconds, meaning that the alert will be posted
immediately. The range is 0.0 to 60.0 seconds.

The Two-Phase Flow alert is set immediately. The flow rate will hold the last measured value for the
Timeout time. Then the flow rate will report zero flow. If the density goes back in range, the error clears
immediately.

Detecting and reporting two-phase flow

Two-phase flow (gas in a liquid process or liquid in a gas process) can cause a variety of process control issues.
By configuring the two-phase flow parameters appropriately for your application, you can detect process
conditions that require correction.

Micro Motion recommends leaving Two-Phase Flow High Limit at the default value.

A two-phase flow condition occurs whenever the measured density goes below Two-Phase Flow Low Limit or
above Two-Phase Flow High Limit. If this occurs:

• A two-phase flow alert is posted to the active alert log.

• All outputs that are configured to represent flow rate hold their last pre-alert value for the number of

seconds configured in Two-Phase Flow Timeout.

If the two-phase flow condition clears before Two-Phase Flow Timeout expires:

• Outputs that represent flow rate revert to reporting actual flow.

• The two-phase flow alert is deactivated, but remains in the active alert log until it is acknowledged.

If the two-phase flow condition does not clear before Two-Phase Flow Timeout expires, the outputs that
represent flow rate report a flow rate of 0.

If Two-Phase Flow Timeout is set to 0.0 seconds, the outputs that represent flow rate will report a flow rate of
0 as soon as two-phase flow is detected.

4.5.3 Configure Density Damping

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Density → Density Damping

40 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Device Tools → Configuration → Process Measurement → Density

Configuration and Use Manual Configure process measurement

MMI-20019038 February 2022

Density Damping controls the amount of damping that will be applied to the line density value.

Damping is used to smooth out small, rapid fluctuations in process measurement. Damping Value specifies
the time period (in seconds) over which the transmitter will spread changes in the process variable. At the end
of the interval, the internal value will reflect 63% of the change in the actual measured value.

Procedure

Effect of Density Damping on volume measurement

Density Damping affects liquid volume measurement. Liquid volume values are calculated from the damped
density value rather than the measured density value. Density Damping does not affect gas standard volume
measurement.

Interaction between Density Damping and Added Damping

When the mA Output is configured to report density, both Density Damping and Added Damping are
applied to the reported density value.

Density Damping controls the rate of change in the value of the process variable in transmitter memory.
Added Damping controls the rate of change reported via the mA Output.

If mA Output Process Variable is set to Density, and both Density Damping and Added Damping are set to
non-zero values, density damping is applied first, and the added damping calculation is applied to the result
of the first calculation. This value is reported over the mA Output.

4.5.4 Configure Density Cutoff

Density Cutoff specifies the lowest density value that will be reported as measured. All density values below
this cutoff will be reported as 0.

Procedure

Set Density Cutoff to the value you want to use.

For most applications, the default setting (0.2 g/cm³) is sufficient. The range is 0.0 g/cm³ to 0.5 g/cm³.

Effect of Density Cutoff on volume measurement

Density Cutoff affects liquid volume measurement. If the density value goes below Density Cutoff, the
volume flow rate is reported as 0. Density Cutoff does not affect gas standard volume measurement. Gas
standard volume values are always calculated from the value configured for Standard Gas Density or polled
value if configured for polled base density.

4.6 Configure temperature measurement

The temperature measurement parameters control how temperature data from the sensor is reported.

4.6.1 Configure Temperature Measurement Unit

ProLink III

Field Communicator Configure → Manual Setup → Measurements → Temperature → Temperature Unit

Configuration and Use Manual 41

Device Tools → Configuration → Process Measurement → Temperature

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

Temperature Measurement Unit specifies the unit that will be used for temperature measurement.

Procedure

Set Temperature Measurement Unit to the option you want to use.

The default setting is Degrees Celsius.

Options for Temperature Measurement Unit

The transmitter provides a standard set of units for Temperature Measurement Unit. Different
communications tools may use different labels for the units.

Label

Unit description

Degrees Celsius °C degC

Degrees Fahrenheit °F degF

Degrees Rankine °R degR

Kelvin °K Kelvin

ProLink III Field Communicator

4.6.2 Configure Temperature Damping

ProLink III Device Tools → Configuration → Temperature

Field Communicator Configure → Manual Setup → Measurements → Temperature → Temp Damping

Temperature Damping controls the amount of damping that will be applied to the line temperature value,
when the on-board temperature data is used (RTD).

Damping is used to smooth out small, rapid fluctuations in process measurement. Damping Value specifies
the time period (in seconds) over which the transmitter will spread changes in the process variable. At the end
of the interval, the internal value will reflect 63% of the change in the actual measured value.

Tip

Temperature Damping affects all process variables, compensations, and corrections that use temperature
data from the sensor.

Procedure

Enter the value you want to use for Temperature Damping.

The default value is 4.8 seconds. For most applications, the default temperature damping setting is sufficient.
The range is 0.0 to 38.4 seconds.

Tip

• A high damping value makes the process variable appear smoother because the reported value changes

slowly.

• A low damping value makes the process variable appear more erratic because the reported value changes

more quickly.

• Whenever the damping value is non-zero, the reported measurement will lag the actual measurement

because the reported value is being averaged over time.

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• In general, lower damping values are preferable because there is less chance of data loss, and less lag time

between the actual measurement and the reported value.

The value you enter is automatically rounded off to the nearest valid value. Valid values for Temperature
Damping are 0, 0.6, 1.2, 2.4, 4.8, 9.6, 19.2, and 38.4.

4.6.3 Effect of Temperature Damping on process measurement

Temperature Damping affects all processes and algorithms that use temperature data from the internal
sensor RTD.

Temperature compensation

Temperature compensation adjusts process measurement to compensate for the effect of temperature on
the sensor tubes.

Petroleum measurement

Temperature Damping affects petroleum measurement process variables only if the transmitter is
configured to use temperature data from the sensor. If an external temperature value is used for petroleum
measurement, Temperature Damping does not affect petroleum measurement process variables.

Concentration measurement

Temperature Damping affects concentration measurement process variables only if the transmitter is
configured to use temperature data from the sensor. If an external temperature value is used for
concentration measurement, Temperature Damping does not affect concentration measurement process
variables.

4.7 Configure the petroleum measurement application

The petroleum measurement application corrects line density to reference temperature according to
American Petroleum Institute (API) standards. The resulting process variable is referred density.

4.7.1 Configure petroleum measurement using ProLink III

The petroleum measurement parameters specify the API table, measurement units, and reference values to
be used in referred density calculations.

Prerequisites

You will need API documentation for the API table that you select.

Depending on your API table, you may need to know the thermal expansion coefficient (TEC) for your process
fluid.

You must know the reference temperature that you want to use.

Procedure

1. Choose Device Tools → Configuration → Process Measurement → Petroleum Measurement.

2. Specify the API table to use to calculate referred density.

Each API table is associated with a specific set of equations.

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February 2022 MMI-20019038

a) Set Process Fluid to the API table group that your process fluid belongs to.

API table group Process fluids

A tables Generalized crude and JP4

B tables Generalized products: Gasoline, jet fuel, aviation fuel, kerosene, heating oils,

fuel oils, diesel, gas oil

C tables Liquids with a constant base density or known thermal expansion coefficient

(TEC). You will be required to enter the TEC for your process fluid.

D tables Lubricating oils

b) Set Referred Density Measurement Unit to the measurement units that you want to use for

referred density.

c) Click Apply.

These parameters uniquely identify the API table to be used to calculate referred density. The selected
API table is displayed, and the meter automatically changes the density unit, temperature unit,
pressure unit, and reference pressure to match the API table.

Your choice also determines the API table that will be used to calculate the correction factor for volume
(CTL).

Restriction

Not all combinations are supported by the petroleum measurement application. See the list of API
tables in this manual.

3. Refer to the API documentation and confirm your table selection.

a) Verify that your process fluid falls within range for line density, line temperature, and line

pressure.

b) Verify that the referred density range of the selected table is adequate for your application.

4. If you chose a C table, enter Thermal Expansion Coefficient (TEC) for your process fluid.

5. Set Reference Temperature to the temperature to which density will be corrected in referred density

calculations. If you choose Other, select the temperature measurement unit and enter the reference
temperature.

4.7.2 Set up temperature data for petroleum measurement using

ProLink III

The petroleum measurement application uses temperature data in its calculations. You must decide how to
provide this data, then perform the required configuration and setup.

Tip

Fixed values for temperature are not recommended. Using a fixed temperature value may produce inaccurate
process data.

Prerequisites

If you plan to poll an external device, the primary mA Output (Channel A) must be wired to support HART
communications.

44 Micro Motion 2500 Transmitters with Configurable Input/Outputs

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If you are using an external temperature device, it must use the temperature unit that is configured in the
transmitter.

Procedure

1. Choose Device Tools → Configuration → Process Measurement → Petroleum Measurement.

2. Choose the method to be used to supply temperature data, and perform the required setup.

Option Description Setup

Internal RTD
temperature data

Polling The meter polls an external

Digital
communications

Temperature data from the on­board temperature sensor
(RTD) is used.

device for temperature data.
This data will be available in
addition to the internal RTD
temperature data.

A host writes temperature data
to the meter at appropriate
intervals. This data will be
available in addition to the
internal RTD temperature data.

a. Set Line Temperature Source to Internal RTD.

b. Click Apply.

a. Set Line Temperature Source to Poll for External Value.

b. Set Polling Slot to an available slot.

c. Set Polling Control to Poll as Primary or Poll as Secondary.

Option Description

Poll as Primary No other HART masters will be on the

network. The Field Communicator is
not a HART master.

Poll as Secondary Other HART masters will be on the

network. The Field Communicator is
not a HART master.

d. Set External Device Tag to the HART tag of the

temperature device.

e. Click Apply.

a. Set Line Temperature Source to Fixed Value or Digital

Communications.

b. Click Apply.

c. Perform the necessary host programming and

communications setup to write temperature data to the
meter at appropriate intervals.

Postrequisites

If you are using external temperature data, verify the external temperature value displayed in the Inputs group
on the ProLink III main window.

Need help?

If the value is not correct:

• Ensure that the external device and the meter are using the same measurement unit.

• For polling:
— Verify the wiring between the meter and the external device.

— Verify the HART tag of the external device.

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February 2022 MMI-20019038

• For digital communications:
— Verify that the host has access to the required data.

— Verify that the host is writing to the correct register in memory, using the correct data type.

4.7.3 Configure petroleum measurement using the Field

Communicator

Procedure

1. Choose Online → Configure → Manual Setup → Measurements → Set Up Petroleum.

2. Specify the API table to use.

a) Open the Petroleum Measurement Source menu and select the API table number.

Depending on your choice, you may be prompted to enter a reference temperature or a thermal
expansion coefficient.

b) Enter the API table letter.

These two parameters uniquely specify the API table.

3. Determine how the transmitter will obtain temperature data for the petroleum measurement

calculations, and perform the required setup.

Option Setup

Temperature data from
the sensor

A user-configured static
temperature value

Polling for temperature a. Ensure that the primary mA output has been wired to support HART

a. Choose Online → Configure → Manual Setup → Measurements →

External Pressure/Temperature → Temperature.

b. Set External Temperature to Disabled.

a. Choose Online → Configure → Manual Setup → Measurements →

External Pressure/Temperature → Temperature.

b. Set External Temperature to Enabled.

c. Set Correction Temperature to the value to be used.

polling.

b. Choose Online → Configure → Manual Setup → Measurements →

External Pressure/Temperature → Temperature.

c. Set External Temperature to Enabled.

d. Choose External Polling.

e. Set Poll Control to Poll As Primary or Poll as Secondary.

f. Determine whether you will use Polling Slot 1 or Polling Slot 2.

g. For the chosen slot, set Ext Dev Tag to the HART tag of the external

temperature device.

h. For the chosen slot, set Polled Variable to Temperature.

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Option Setup

Tip

• Poll as Primary: No other HART masters will be on the network.

• Poll as Secondary: Other HART masters will be on the network. The Field

Communicator is not a HART master.

A value written by
digital communications

a. Choose Online → Configure → Manual Setup → Measurements →

External Pressure/Temperature → Temperature.

b. Set External Temperature to Enabled.

c. Perform the necessary host programming and communications setup

to write temperature data to the transmitter at appropriate intervals.

Note

If the Weights & Measures application is implemented and the transmitter
is secured, digital communications cannot be used to write temperature or
pressure data to the transmitter.

4.7.4 API tables supported by the petroleum measurement application

The API tables listed here are supported by the petroleum measurement application.

Table
name Process fluid CTL source data Reference temperature Density unit

5A Generalized crude and

JP4

5B Generalized products Observed density and

Observed density and
observed temperature

observed temperature

60 °F (configurable) Degrees API

Range: 0 to 100

60 °F (configurable) Degrees API

Range: 0 to 85

5D Lubricating oils Observed density and

observed temperature

6C Liquids with a constant

density base or known
thermal expansion
coefficient

23A Generalized crude and

JP4

23B Generalized products Observed density and

23D Lubricating oils Observed density and

Configuration and Use Manual 47

User-supplied reference
density (or thermal
expansion coefficient)
and observed
temperature

Observed density and
observed temperature

observed temperature

observed temperature

60 °F (configurable) Degrees API

Range: −10 to +45

60 °F (configurable) Degrees API

60 °F (configurable) Relative density

Range: 0.6110 to 1.0760

60 °F (configurable) Relative density

Range: 0.6535 to 1.0760

60 °F (configurable) Relative density

Range: 0.8520 to 1.1640

Configure process measurement Configuration and Use Manual

February 2022 MMI-20019038

Table
name Process fluid CTL source data Reference temperature Density unit

24C Liquids with a constant

density base or known
thermal expansion
coefficient

53A Generalized crude and

JP4

53B Generalized products Observed density and

53D Lubricating oils Observed density and

54C Liquids with a constant

density base or known
thermal expansion
coefficient

User-supplied reference
density (or thermal
expansion coefficient)
and observed
temperature

Observed density and
observed temperature

observed temperature

observed temperature

User-supplied reference
density (or thermal
expansion coefficient)
and observed
temperature

60 °F (configurable) Relative density

15 °C (configurable) Base density

Range: 610 to
1075 kg/m

15 °C (configurable) Base density

Range: 653 to
1075 kg/m

15 °C (configurable) Base density

Range: 825 to
1164 kg/m

15 °C (configurable) Base density in kg/m

3

3

3

3

Restriction

These tables are not appropriate for the following process fluids: propane and propane mixes, butane and
butane mixes, butadiene and butadiene mixes, isopentane, LNG, LPG, NGL, ethylene, propylene, cyclohexane,
aeromatics, asphalts, and road tars.

4.8 Set up concentration measurement

This section guides you through loading and setting up a concentration matrix used for measurement. It does
not cover building a concentration matrix.

The concentration measurement application calculates concentration data from process temperature and
density. Micro Motion provides a set of concentration matrices that provide the reference data for several
standard industry applications and process fluids. If desired, you can build a custom matrix for your process
fluid, or purchase a custom matrix from Micro Motion.

Note

Concentration matrices can be made available on your transmitter either by loading an existing matrix from a
file or by building a new matrix. Up to 6 matrices can be available on your transmitter, but only 1 can be used
for measurement at any given time. For detailed information on building a matrix, see the .

Prerequisites

Before you can configure concentration measurement:

• The concentration measurement application must be purchased on your transmitter.

• The concentration matrix you want to use must be available on your transmitter, or it must be available as

a file on your computer.

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• You must know the derived variable that your matrix is designed for.

• You must know the density unit used by your matrix.

• You must know the temperature unit used by your matrix.

• The concentration measurement application must be unlocked.

4.8.1 Configure concentration measurement using ProLink III

Procedure

1. Choose Device Tools → Configuration → Process Measurement → Density and set Density Unit to

the density unit used by your matrix.

2. Choose Device Tools → Configuration → Process Measurement → Temperature and set

Temperature Unit to the temperature unit used by your matrix.

3. Choose Device Tools → Configuration → Process Measurement → Concentration Measurement.

4. Set Derived Variable to the derived variable that your matrix is designed for, and click Apply.

Important

• All concentration matrices on your transmitter must use the same derived variable. If you are using

one of the standard matrices from Micro Motion, set Derived Variable to Mass Concentration
(Density). If you are using a custom matrix, see the reference information for your matrix.

• If you change the setting of Derived Variable, all existing concentration matrices will be deleted

from transmitter memory. Set Derived Variable before loading concentration matrices.

5. Load one or more matrices.
a) Set Matrix Being Configured to the location to which the matrix will be loaded.

b) Click Load Matrix from a File, navigate to the matrix file on your computer, and load it.

c) Repeat until all required matrices are loaded.

6. Configure or review matrix data.
a) If necessary, set Matrix Being Configured to the matrix you want to configure or review, and

click Change Matrix.

b) Set Concentration Unit to the label that will be used for the concentration unit.

c) If you set Concentration Unit to Special, enter the custom label.

d) If desired, change the matrix name.

e) Review the data points for this matrix.

f) Do not change Reference Temperature or Curve Fit Maximum Order.

g) If you changed any matrix data, click Apply.

7. Set up extrapolation alarms.

Each concentration matrix is built for a specific density range and a specific temperature range. If
process density or process temperature goes outside the range, the transmitter will extrapolate

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concentration values. However, extrapolation may affect accuracy. Extrapolation alarms are used to
notify the operator that extrapolation is occurring.

a) If necessary, set Matrix Being Configured to the matrix you want to view, and select Change

Matrix.

b) Set Extrapolation Alarm Limit to the point, in percent, at which an extrapolation alarm will be

posted.

c) Enable or disable the high and low limit alarms for temperature and density, as desired, and

select Apply.

Restriction

The high and low limit alarms require the enhanced core processor.

Example

If Extrapolation Alarm Limit is set to 5%, High Extrapolation Limit (Temperature) is enabled, and the
matrix is built for a temperature range of 40 °F (4.4 °C) to 80 °F (26.7 °C), an extrapolation alarm will be
posted if process temperature goes above 82 °F (27.8 °C).

8. Set Temperature Source to the method that the transmitter will use to obtain temperature data.

Option Description

Poll for external value

(1)

The transmitter will poll an external temperature device, using
HART protocol over the primary mA Output.

RTD The transmitter will use the temperature data from the sensor.

Static or Digital
Communications

The transmitter will use the temperature value that it reads from
memory.

• Static: The configured value is used. (Not recommended.)

• Digital Communications: A host writes transmitter data to

transmitter memory.

Note

If the Weights & Measures application is implemented and the
transmitter is secured, digital communications cannot be used to
write temperature or pressure data to the transmitter.

9. If you chose RTD, no more configuration is required. Select Apply and exit.

10. If you chose to poll for temperature data:
a) Select the Polling Slot to use.

b) Set Polling Control to Poll as Primary or Poll as Secondary, and click Apply.

Tip

• Poll as Primary: No other HART masters will be on the network.

• Poll as Secondary: Other HART masters will be on the network. The Field Communicator is

not a HART master.

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c) Set External Device Tag to the HART tag of the external temperature device, and select Apply.

11. If you chose to use a static temperature value, set External Temperature to the value to use, and select
Apply.

12. If you want to use digital communications, select Apply, then perform the necessary host
programming and communications setup to write temperature data to the transmitter at appropriate
intervals.

13. Set Active Matrix to the matrix to be used for measurement.

Concentration process variables are now available on the transmitter. You can view and report them in the
same way that you view and report other process variables.

4.8.2 Configure concentration measurement using the Field Communicator

Procedure

1. Choose Online → Configure → Manual Setup → Measurements → Density and set Density Unit to
match the density unit used by your matrix.

2. Choose Online → Configure → Manual Setup → Measurements → Temperature and set
Temperature Unit to match the temperature unit used by your matrix.

3. Choose Online → Configure → Manual Setup → Measurements and click Concentration
Measurement.

4. Enable or disable matrix switching, as desired.

5. Set up extrapolation alerts.
Each concentration matrix is built for a specific density range and a specific temperature range. If

process density or process temperature goes outside the range, the transmitter will extrapolate
concentration values. However, extrapolation may affect accuracy. Extrapolation alerts are used to
notify the operator that extrapolation is occurring.

a) Click Next.

b) On the Matrix Configuration page, set Matrix Being Configured to the matrix that you want to

configure.

c) Modify the matrix name if desired.

d) Set Extrapolation Alert Limit to the point, in percent, at which an extrapolation alert will be

posted.

e) Choose Online → Configure → Alert Setup → CM Alerts.

f) Enable or disable the high and low limit alarms for temperature and density, as desired.

Restriction

The high and low limit alarms require the enhanced core processor.

Example

If Alarm Limit is set to 5%, the high-temperature extrapolation alert is enabled, and the matrix is built
for a temperature range of 40 °F (4.4 °C) to 80 °F (26.7 °C), an extrapolation alarm will be posted if
process temperature goes above 82 °F (27.8 °C).

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6. Select the label that will be used for the concentration unit.

a) Click Next.

b) On the Concentration Measurement page, set Concentration Units to the desired label.

c) Set Concentration Units to the desired label.

d) If you set Units to Special, enter the custom label.

e) Click Finish.

7. Determine how the transmitter will obtain temperature data for the concentration measurement
calculations, and perform the required setup.

Option Setup

Temperature data from
the sensor

A user-configured static
temperature value

Polling for
temperature

(1)

a. Choose Online → Configure → Manual Setup → Measurements.

b. Click External Inputs.

c. Click Next.

d. Disable External Temperature.

a. Choose Online → Configure → Manual Setup → Measurements.

b. Click External Inputs.

c. Click Next.

d. Enable External Temperature.

e. Set Correction Temperature to the value to be used.

a. Ensure that the primary mA output has been wired to support HART

polling.

b. Choose Online → Configure → Manual Setup → Measurements.

c. Click External Inputs.

d. Click Next.

e. Enable External Temperature.

f. Click Next.

g. Choose an unused polling slot.

h. Set Poll Control to Poll As Primary Host or Poll as Secondary Host.

i. Set External Tag to the HART tag of the external temperature device.

j. Set Polled Variable to Temperature.

Tip

• Poll as Primary: No other HART masters will be on the network.

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Option Setup

• Poll as Secondary: Other HART masters will be on the network. The Field

Communicator is not a HART master.

A value written by
digital communications

a. Choose Online → Configure → Manual Setup → Measurements →

External Pressure/Temperature → Temperature.

b. Enable External Temperature.

c. Perform the necessary host programming and communications setup

to write temperature data to the transmitter at appropriate intervals.

Note

If the Weights & Measures application is implemented and the transmitter
is secured, digital communications cannot be used to write temperature or
pressure data to the transmitter.

8. Choose Online → Configure → Manual Setup → Measurements → Conc Measurement (CM) → CM
Configuration and set Active Matrix to the matrix to be used for measurement.

Concentration process variables are now available on the transmitter. You can view and report them in the
same way that you view and report other process variables.

4.8.3 Standard matrices for the concentration measurement application

The standard concentration matrices available from Micro Motion are applicable for a variety of process fluids.
These matrices are included in the ProLink III installation folder.

Tip

If the standard matrices are not appropriate for your application, you can build a custom matrix or purchase a
custom matrix from Micro Motion.

Matrix name

Deg Balling Matrix represents percent extract, by

Deg Brix Matrix represents a hydrometer scale

Configuration and Use Manual 53

Description Density unit

3

g/cm
mass, in solution, based on °Balling.
For example, if a wort is 10 °Balling and
the extract in solution is 100% sucrose,
the extract is 10% of the total mass.

3

g/cm
for sucrose solutions that indicates the
percent by mass of sucrose in solution
at a given temperature. For example,
40 kg of sucrose mixed with 60 kg of
water results in a 40 °Brix solution.

Temperature
unit

°F Mass

°C Mass

Derived variable

Concentration
(Density)

Concentration
(Density)

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February 2022 MMI-20019038

Matrix name Description Density unit

Deg Plato Matrix represents percent extract, by

mass, in solution, based on °Plato. For
example, if a wort is 10 °Plato and the
extract in solution is 100% sucrose, the
extract is 10% of the total mass.

HFCS 42 Matrix represents a hydrometer scale

for HFCS 42 (high-fructose corn syrup)
solutions that indicates the percent by
mass of HFCS in solution.

HFCS 55 Matrix represents a hydrometer scale

for HFCS 55 (high-fructose corn syrup)
solutions that indicates the percent by
mass of HFCS in solution.

HFCS 90 Matrix represents a hydrometer scale

for HFCS 90 (high-fructose corn syrup)
solutions that indicates the percent by
mass of HFCS in solution.

g/cm

g/cm

g/cm

g/cm

3

3

3

3

Temperature
unit

°F Mass

°C Mass

°C Mass

°C Mass

Derived variable

Concentration
(Density)

Concentration
(Density)

Concentration
(Density)

Concentration
(Density)

4.8.4 Derived variables and calculated process variables

The concentration measurement application calculates a different set of process variables from each derived
variable. The process variables are then available for viewing or reporting.

Derived variable Description

Density
at Reference

Specific Gravity The ratio of the density

Mass
Concentration
(Density)

Mass/unit volume,
corrected to a given
reference temperature

of a process fluid at a
given temperature to
the density of water at
a given temperature

Note

The two given
temperature conditions
do not need to be the
same.

The percent mass of
solute or of material in
suspension in the total
solution, derived from
reference density

Calculated process variables

Density at
reference
temp

✓ ✓

✓ ✓ ✓

✓ ✓ ✓ ✓

Standard
volume
flow rate

Specific
gravity

ConcentrationNet mass

flow rate

Net
volume
flow rate

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Calculated process variables

Derived variable Description

Mass
Concentration
(Specific Gravity)

Volume
Concentration
(Density)

Volume
Concentration
(Specific Gravity)

Concentration
(Density)

The percent mass of
solute or of material in
suspension in the total
solution, derived from
specific gravity

The percent volume of
solute or of material in
suspension in the total
solution, derived from
reference density

The percent volume of
solute or of material in
suspension in the total
solution, derived from
specific gravity

The mass, volume,
weight, or number of
moles of solute or of
material in suspension
in proportion to the
total solution, derived
from reference density

Density at
reference
temp

✓ ✓ ✓ ✓ ✓

✓ ✓ ✓ ✓

✓ ✓ ✓ ✓ ✓

✓ ✓ ✓

Standard
volume
flow rate

Specific
gravity

ConcentrationNet mass

flow rate

Net
volume
flow rate

Concentration
(Specific Gravity)

The mass, volume,
weight, or number of
moles of solute or of
material in suspension
in proportion to the
total solution, derived
from specific gravity

✓ ✓ ✓ ✓

4.9 Configure pressure compensation

Pressure compensation adjusts process measurement to compensate for the pressure effect on the sensor.
The pressure effect is the change in the sensor’s sensitivity to flow and density caused by the difference
between the calibration pressure and the process pressure.

Tip

Not all sensors or applications require pressure compensation. The pressure effect for a specific sensor model
can be found in the product data sheet located at . If you are uncertain about implementing pressure
compensation, contact customer service.

Prerequisites

You will need the flow factor, density factor, and calibration pressure values for your sensor.

• For the flow factor and density factor, see the product data sheet for your sensor.

• For the calibration pressure, see the calibration sheet for your sensor. If the data is unavailable, use 20 PSI.

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February 2022 MMI-20019038

4.9.1 Configure pressure compensation using ProLink III

Procedure

1. Choose Device Tools → Configuration → Process Measurement → Pressure Compensation.

2. Set Pressure Compensation Status to Enabled.

3. Set Pressure Unit to the appropriate unit.

If you will use an external pressure value, set Pressure Unit to match the pressure unit used by the
external pressure device.

4. Enter Flow Calibration Pressure for your sensor.

The calibration pressure is the pressure at which your sensor was calibrated, and defines the pressure at
which there is no pressure effect. If the data is unavailable, enter 20 PSI.

5. Enter Flow Factor for your sensor.

The flow factor is the percent change in the flow rate per PSI. When entering the value, reverse the
sign.

Example

If the flow factor is 0.000004 % per PSI, enter −0.000004 % per PSI.

6. Enter Density Factor for your sensor.

The density factor is the change in fluid density, in g/cm3/PSI. When entering the value, reverse the
sign.

Example

If the density factor is −0.000006 g/cm3/PSI, enter +0.000006 g/cm3/PSI.

7. Set Pressure Source to the method that the transmitter will use to obtain pressure data.

Option

Poll for external value The transmitter will poll an external pressure device, using HART

Fixed Value or Digital
Communications

Description

protocol over the primary mA Output.

The transmitter will use the pressure value that it reads from
memory.

• Fixed Value: The configured value is used.

• Digital Communications: A host writes transmitter data to

transmitter memory.

Note

If the Weights & Measures application is implemented and the
transmitter is secured, digital communications cannot be used to
write temperature or pressure data to the transmitter.

8. If you chose to poll for pressure data:
a) Select the Polling Slot to use.

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MMI-20019038 February 2022

b) Set Polling Control to Poll as Primary or Poll as Secondary, and click Apply.

Tip

• Poll as Primary: No other HART masters will be on the network.

• Poll as Secondary: Other HART masters will be on the network. The Field Communicator is

not a HART master.

c) Set External Device Tag to the HART tag of the external pressure device, and click Apply.

d) Ensure that the primary mA Output is wired to support HART communications with the external

pressure device.

9. If you chose to use a fixed pressure value:
a) Set Fixed Value to the value to use, and click Apply

10. If you want to use digital communications, click Apply, then perform the necessary host programming
and communications setup to write pressure data to the transmitter at appropriate intervals.

Postrequisites

If you are using an external pressure value, verify the setup by checking the External Pressure value displayed
in the Inputs area of the main window.

4.9.2 Configure pressure compensation using the Field Communicator

Procedure

1. Choose Online → Configure → Manual Setup → Measurements → External Pressure/Temperature
→ Pressure.

2. Set Pressure Compensation to Enabled.

3. Enter Flow Cal Pressure for your sensor.

The calibration pressure is the pressure at which your sensor was calibrated, and defines the pressure at
which there is no pressure effect. If the data is unavailable, enter 20 PSI.

4. Enter Flow Press Factor for your sensor.

The flow factor is the percent change in the flow rate per PSI. When entering the value, reverse the
sign.

Example

If the flow factor is −0.0002 % per PSI, enter +0.0002 % per PSI.

5. Enter Dens Press Factor for your sensor.

The density factor is the change in fluid density, in g/cm3/PSI. When entering the value, reverse the
sign.

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February 2022 MMI-20019038

Example

If the density factor is −0.000006 g/cm3/PSI, enter +0.000006 g/cm3/PSI.

6. Determine how the transmitter will obtain pressure data, and perform the required setup.

Option Setup

A user-configured static
pressure value

a. Set Pressure Unit to the desired unit.

b. Set Compensation Pressure to the desired value.

Polling for pressure a. Ensure that the primary mA Output has been wired to support HART

polling.

b. Choose Online → Configure → Manual Setup → Measurements →

External Pressure/Temperature → External Polling.

c. Set Poll Control to Poll As Primary Host or Poll as Secondary Host.

d. Choose an unused polling slot.

e. Set External Tag to the HART tag of the external pressure device.

f. Set Polled Variable to Pressure.

Tip

• Poll as Primary: No other HART masters will be on the network.

• Poll as Secondary: Other HART masters will be on the network. The Field

Communicator is not a HART master.

A value written by
digital communications

a. Set Pressure Unit to the desired unit.

b. Perform the necessary host programming and communications setup

to write pressure data to the transmitter at appropriate intervals.

Note

If the Weights & Measures application is implemented and the transmitter
is secured, digital communications cannot be used to write temperature or
pressure data to the transmitter.

Postrequisites

If you are using an external pressure value, verify the setup by choosing Service Tools → Variables → External
Variables and checking the value displayed for External Pressure.

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4.9.3 Options for Pressure Measurement Unit

The transmitter provides a standard set of measurement units for Pressure Measurement Unit. Different
communications tools may use different labels for the units. In most applications, Pressure Measurement
Unit should be set to match the pressure measurement unit used by the remote device.

Label

Unit description

Feet water @ 68 °F Ft Water @ 68°F ftH2O

Inches water @ 4 °C In Water @ 4°C inH2O @4DegC

Inches water @ 60 °F In Water @ 60°F inH2O @60DegF

Inches water @ 68 °F In Water @ 68°F inH2O

Millimeters water @ 4 °C mm Water @ 4°C mmH2O @4DegC

Millimeters water @ 68 °F mm Water @ 68°F mmH2O

Millimeters mercury @ 0 °C mm Mercury @ 0°C mmHg

Inches mercury @ 0 °C In Mercury @ 0°C inHG

Pounds per square inch PSI psi

Bar bar bar

Millibar millibar mbar

Grams per square centimeter g/cm2 g/Sqcm

Kilograms per square centimeter kg/cm2 kg/Sqcm

Pascals pascals Pa

Kilopascals Kilopascals kPa

Megapascals Megapascals MPa

ProLink III Field Communicator

Torr @ 0 °C Torr @ 0°C torr

Atmospheres atms atms

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5 Configure device options and preferences

5.1 Configure response time parameters

You can configure the rate at which process data is polled and process variables are calculated.

5.1.1 Configure Update Rate

ProLink III Device Tools → Configuration → Process Measurement → Response → Update Rate

Field Communicator Configure → Manual Setup → Measurements → Update Rate

Update Rate controls the rate at which process data is polled and process variables are calculated. Update
Rate = Special produces faster and “noisier” response to changes in the process. Do not use Special mode

unless required by your application.

Prerequisites

Before setting Update Rate to Special:

• Check the effects of Special mode on specific process variables.

• Contact customer support.

Tip

For systems with a standard core processor, Special mode can improve performance for applications with
entrained air or Empty-Full-Empty conditions. This does not apply to systems with an enhanced core
processor.

Procedure

1. Set Update Rate as desired.

Option

Normal All process data is polled at the rate of 20 times per second (20 Hz).

Special A single, user-specified process variable is polled at the rate of 100 times per second

Description

All process variables are calculated at 20 Hz.
This option is appropriate for most applications.

(100 Hz). Other process data is polled at 6.25 Hz. Some process, diagnostic, and calibration
data is not polled.

All available process variables are calculated at 100 Hz.
Use this option only if required by your application.

If you change Update Rate, the settings for Flow Damping, and Density Damping are automatically
adjusted.

2. If you set Update Rate to Special, select the process variable to be polled at 100 Hz.

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Effects of Update Rate = Special

Incompatible features and functions

Special mode is not compatible with the following features and functions:

• Enhanced events. Use basic events instead.

• All calibration procedures.

• Zero verification.

• Restoring the factory zero or the prior zero.

If required, you can switch to Normal mode, perform the desired procedures, and then return to Special
mode.

Process variable updates

Some process variables are not updated when Special mode is enabled.

Table 5-1: Special mode and process variable updates

Always polled and updated Updated only when the petroleum

measurement application is
disabled

• Mass flow

• Volume flow

• Gas standard volume flow

• Density

• Temperature

• Drive gain

• LPO amplitude

• Status [contains Event 1 and Event

2 (basic events)]

• Mass total

• Volume total

• Live zero

• Gas standard volume total

• Temperature-corrected volume

total

• Temperature-corrected density

• Temperature-corrected volume

flow

• Batch-weighted average

temperature

• Batch-weighted average density

• RPO amplitude

• Core input voltage

• Mass inventory

• Volume inventory

• Gas standard volume inventory

Never updated

All other process variables and
calibration data. They retain the values
held at the time you enabled Special
mode.

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5.1.2 Configure Response Time

ProLink III Device Tools → Configuration → Process Measurement → Response → Response Time

Field Communicator Not available

Response Time is used to apply a different algorithm to the calculation of process variables from the raw
process data.

Restriction

Response Time is available only on systems with the enhanced core processor.

Procedure

Set Response Time as desired.

Option Description

Normal (Legacy) Transmitter calculates process variables at the standard speed. This option is

selected if this parameter was configured on an earlier version of ProLink III
software.

Special (Legacy) Transmitter calculates process variables at a faster speed. This option is

selected if this parameter was configured on an earlier version of ProLink III
software.

Normal - Optimal Filtering Transmitter calculates process variables at standard filtering and speed.

Low Filtering - Fastest
Response

High Filtering - Smoothest
Output

Service For factory use only.

Transmitter calculates process variables at the fastest speed.

Transmitter calculates process variables at the smoothest (least noisy)
response to changes in the process.

5.2 Configure alert handling

The alert handling parameters control the transmitter’s response to process and device conditions.

5.2.1 Configure Fault Timeout

ProLink III

Field Communicator Configure → Alert Setup → Alert Severity → Fault Timeout

Fault Timeout controls the delay before fault actions are performed.

Device Tools → Configuration → Fault Processing

Restriction

Fault Timeout is applied only to the following alerts (listed by Status Alert Code): A003, A004, A005, A008,
A016, A017, A033. For all other alerts, fault actions are performed as soon as the alert is detected.

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Procedure

Set Fault Timeout as desired.

The default value is 0 seconds. The range is 0 to 60 seconds.

If you set Fault Timeout to 0, fault actions are performed as soon as the alert condition is detected.

The fault timeout period begins when the transmitter detects an alert condition. During the fault timeout
period, the transmitter continues to report its last valid measurements.

If the fault timeout period expires while the alert is still active, the fault actions are performed. If the alert
condition clears before the fault timeout expires, no fault actions are performed.

5.2.2 Configure Status Alert Severity

ProLink III Device Tools → Configuration → Alert Severity

Field Communicator Configure → Alert Setup → Alert Severity → Set Alert Severity

Use Status Alert Severity to control the fault actions that the transmitter performs when it detects an alert
condition.

Restriction

• For some alerts, Status Alert Severity is not configurable.

• For some alerts, Status Alert Severity can be set only to two of the three options.

Tip

Use the default settings for Status Alert Severity unless you have a specific requirement to change them.

Procedure

1. Select a status alert.

2. For the selected status alert, set Status Alert Severity as desired.

Option

Fault Actions when fault is detected:

Description

• The alert is posted to the Alert List.

• Outputs go to the configured fault action (after Fault Timeout has expired, if

applicable).

• Digital communications go to the configured fault action (after Fault Timeout has

expired, if applicable).

• The status LED (if available) changes to red or yellow (depending on alert severity).

Actions when alert clears:

• Outputs return to normal behavior.

• Digital communications return to normal behavior.

• The status LED (if available) returns to green and may or may not flash.

Informational Actions when fault is detected:

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Option Description

• The alert is posted to the Alert List.

• The status LED (if available) changes to red or yellow (depending on alert severity).

Actions when alert clears:

• The status LED (if available) returns to green and may or may not flash.

Ignore No action

Status alerts and options for Status Alert Severity

Table 5-2: Status alerts and Status Alert Severity

Alert code Status message Default severity Notes Configurable?

A001 EEPROM Error Fault No

A002 RAM Error Fault No

A003 No Sensor Response Fault Yes

A004 Temperature Overrange Fault No

A005 Mass Flow Rate Overrange Fault Yes

A006 Characterization Required Fault Yes

A008 Density Overrange Fault Yes

A009 Transmitter Initializing/

Warming Up

A010 Calibration Failure Fault No

A011 Zero Calibration Failed:

Low

A012 Zero Calibration Failed:

High

A013 Zero Calibration Failed:

Unstable

A014 Transmitter Failure Fault No

A016 Sensor RTD Failure Fault Yes

A017 T-Series RTD Failure Fault Yes

A018 EEPROM Error

(Transmitter)

A019 RAM Error (Transmitter) Fault No

Fault Yes

Fault Yes

Fault Yes

Fault Yes

Fault No

A020 No Flow Cal Value Fault Yes

A021 Incorrect Sensor Type (K1) Fault No

A022 Configuration Database

Corrupt (Core Processor)

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Fault Applies only to flowmeters with the

standard core processor.

No

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Table 5-2: Status alerts and Status Alert Severity (continued)

Alert code Status message Default severity Notes Configurable?

A023 Internal Totals Corrupt

(Core Processor)

A024 Program Corrupt (Core

Processor)

A025 Boot Sector Fault (Core

Processor)

A026 Sensor/Transmitter

Communications Failure

A027 Security Breach Fault No

A028 Core Processor Write

Failure

A031 Low Power Fault Applies only to flowmeters with the

A032 Meter Verification in

Progress: Outputs to Fault

A033 Insufficient Right/Left

Pickoff Signal

A034 Meter Verification Failed Fault Applies only to transmitters with

Fault Applies only to flowmeters with the

standard core processor.

Fault Applies only to flowmeters with the

standard core processor.

Fault Applies only to flowmeters with the

standard core processor.

Fault No

Fault No

enhanced core processor.

Varies Applies only to transmitters with

Smart Meter Verification.
If outputs are set to Last Measured

Value, severity is Info. If outputs are
set to Fault, severity is Fault.

Fault Applies only to flowmeters with the

enhanced core processor.

Smart Meter Verification.

No

No

No

No

No

Yes

Yes

A035 Meter Verification Aborted Fault Applies only to transmitters with

Smart Meter Verification.

A100 mA Output 1 Saturated Informational Can be set to either Informational

or Ignore, but cannot be set to
Fault.

A101 mA Output 1 Fixed Informational Can be set to either Informational

or Ignore, but cannot be set to
Fault.

A102 Drive Overrange Informational Yes

A103 Data Loss Possible (Totals

and Inventories)

A104 Calibration in Progress Informational Can be set to either Informational

A105 Slug Flow Informational Yes

Informational Applies only to flowmeters with the

enhanced core processor.
Can be set to either Informational

or Ignore, but cannot be set to
Fault.

or Ignore, but cannot be set to
Fault.

Yes

Yes

Yes

Yes

Yes

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Table 5-2: Status alerts and Status Alert Severity (continued)

Alert code Status message Default severity Notes Configurable?

A106 Burst Mode Enabled Informational Can be set to either Informational

or Ignore, but cannot be set to
Fault.

A107 Power Reset Occurred Informational Normal transmitter behavior;

occurs after every power cycle.

A108 Basic Event 1 On Informational Applies only to basic events. Yes

A109 Basic Event 2 On Informational Applies only to basic events. Yes

A110 Frequency Output

Saturated

A111 Frequency Output Fixed Informational Can be set to either Informational

A112 Upgrade Transmitter

Software

A113 mA Output 2 Saturated Informational Can be set to either Informational

A114 mA Output 2 Fixed Informational Can be set to either Informational

Informational Can be set to either Informational

or Ignore, but cannot be set to
Fault.

or Ignore, but cannot be set to
Fault.

Informational Applies only to systems with

transmitter software earlier than
v5.0.

or Ignore, but cannot be set to
Fault.

or Ignore, but cannot be set to
Fault.

Yes

Yes

Yes

Yes

Yes

Yes

Yes

A115 No External Input or Polled

Data

A116 Temperature Overrange

(Petroleum)

A117 Density Overrange

(Petroleum)

A118 Discrete Output 1 Fixed Informational Can be set to either Informational

A119 Discrete Output 2 Fixed Informational Can be set to either Informational

A120 Curve Fit Failure

(Concentration)

A121 Extrapolation Alarm

(Concentration)

Informational Yes

Informational Applies only to transmitters with

the petroleum measurement
application.

Informational Applies only to transmitters with

the petroleum measurement
application.

or Ignore, but cannot be set to
Fault.

or Ignore, but cannot be set to
Fault.

Informational Applies only to transmitters with

the concentration measurement
application.

Informational Applies only to transmitters with

the concentration measurement
application.

Yes

Yes

Yes

Yes

No

Yes

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Table 5-2: Status alerts and Status Alert Severity (continued)

Alert code Status message Default severity Notes Configurable?

A131 Meter Verification in

Progress: Outputs to Last
Measured Value

A132 Sensor Simulation Active Informational Applies only to flowmeters with the

A141 DDC trigger(s) have

completed

Informational Applies only to transmitters with

Smart Meter Verification.

enhanced core processor.
Can be set to either Informational

or Ignore, but cannot be set to
Fault.

Informational Applies only to flowmeters with the

enhanced core processor.
Can be set to either Informational

or Ignore, but cannot be set to
Fault.

Yes

To Informational
or Ignore only

Yes

5.3 Configure informational parameters

The informational parameters can be used to identify or describe your meter. They are not used in process
measurement and they are not required.

5.3.1 Configure Sensor Serial Number

ProLink III

Field Communicator Configure → Manual Setup → Info Parameters → Sensor Information → Sensor Serial Number

Device Tools → Configuration → Informational Parameters → Sensor

Sensor Serial Number lets you store the serial number of the sensor component of your flowmeter in

transmitter memory. This parameter is not used in processing and is not required.

Procedure

1. Obtain the sensor serial number from your sensor tag.

2. Enter the serial number in the Sensor Serial Number field.

5.3.2 Configure Sensor Material

ProLink III

Field Communicator Configure → Manual Setup → Info Parameters → Sensor Information → Tube Wetted Material

Sensor Material lets you store the type of material used for your sensor’s wetted parts in transmitter
memory. This parameter is not used in processing and is not required.

Procedure

1. Obtain the material used for your sensor’s wetted parts from the documents shipped with your sensor,
or from a code in the sensor model number.

To interpret the model number, refer to the product data sheet for your sensor.

Device Tools → Configuration → Informational Parameters → Sensor

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2. Set Sensor Material to the appropriate option.

5.3.3 Configure Sensor Liner Material

ProLink III Device Tools → Configuration → Informational Parameters → Sensor

Field Communicator Configure → Manual Setup → Info Parameters → Sensor Information → Tube Lining

Sensor Liner Material lets you store the type of material used for your sensor liner in transmitter memory.
This parameter is not used in processing and is not required.

Procedure

1. Obtain your sensor’s liner material from the documents shipped with your sensor, or from a code in the
sensor model number.

To interpret the model number, refer to the product data sheet for your sensor.

2. Set Sensor Liner Material to the appropriate option.

5.3.4 Configure Sensor Flange Type

ProLink III Device Tools → Configuration → Informational Parameters → Sensor

Field Communicator Configure → Manual Setup → Info Parameters → Sensor Information → Sensor Flange

Sensor Flange Type lets you store your sensor’s flange type in transmitter memory. This parameter is not
used in processing and is not required.

Procedure

1. Obtain your sensor’s flange type from the documents shipped with your sensor, or from a code in the
sensor model number.

To interpret the model number, refer to the product data sheet for your sensor.

2. Set Sensor Flange Type to the appropriate option.

5.3.5 Configure Descriptor

ProLink III

Field Communicator Configure → Manual Setup → Info Parameters → Transmitter Info → Descriptor

Descriptor lets you store a description in transmitter memory. The description is not used in processing and is
not required.

Procedure

Enter a description for the transmitter or device
You can use up to 16 characters for the description.

Device Tools → Configuration → Informational Parameters → Transmitter

5.3.6 Configure Message

ProLink III

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Field Communicator Configure → Manual Setup → Info Parameters → Transmitter Info → Message

Message lets you store a short message in transmitter memory. This parameter is not used in processing and
is not required.

Procedure

Enter a short message for the transmitter or device.
Your message can be up to 32 characters long.

5.3.7 Configure Date

ProLink III Device Tools → Configuration → Informational Parameters → Transmitter

Field Communicator Configure → Manual Setup → Info Parameters → Transmitter Info → Date

Date lets you store a static date (not updated by the transmitter) in transmitter memory. This parameter is
not used in processing and is not required.

Procedure

Enter the date you want to use, in the form mm/dd/yyyy.

Tip

ProLink III provides a calendar tool to help you select the date.

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6 Integrate the meter with the control system

6.1 Configure the transmitter channels

ProLink III Device Tools → Configuration → I/O → Channels

Field communicator Configure → Manual Setup → Inputs/Outputs → Channels → Channel B

Configure → Manual Setup → Inputs/Outputs → Channels → Channel C

You can configure the channels on your transmitter to operate in several ways. The channel configuration
must match the wiring at the transmitter terminals.

Prerequisites

To avoid causing process errors:

• Configure the channels before configuring the outputs.

• Before changing the channel configuration, ensure that all control loops affected by the channel are under

manual control.

Important

Before configuring a channel to operate as a Discrete Input, check the status of the remote input device and
the actions assigned to the Discrete Input. If the Discrete Input is ON, all actions assigned to the Discrete
Input will be performed when the new channel configuration is implemented. If this is not acceptable, change
the state of the remote device or wait to configure the channel as a Discrete Input until an appropriate time.

Note

Channel A always operates as an internally-powered mA Output. If Channel B is configured as an mA Output,
it is internally powered.

Important

If you need both a Frequency Output and a Discrete Output, you must first configure Channel B as the
Frequency Output, then configure Channel C as the Discrete Output. Other combinations are invalid and will
be rejected by the transmitter.

Procedure

1. Set Channel B as desired.

Option

Secondary mA Output Channel B will operate as an mA Output.

Frequency Output Channel B will operate as a Frequency Output.

Description

Discrete Output Channel B will operate as a Discrete Output.

2. If you set Channel B to operate as a Frequency Output or Discrete Output, configure the power source

for the channel.

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Option Description

Internal (Active) The channel is powered by the transmitter.

External (Passive) The channel is powered by an external power source.

3. Set Channel C as desired.

Option Description

Frequency Output Channel C will operate as a Frequency Output.

Discrete Output Channel C will operate as a Discrete Output.

Discrete Input Channel C will operate as a Discrete Input.

4. Configure the power source for Channel C.

Option Description

Internal (Active) The channel is powered by the transmitter.

External (Passive) The channel is powered by an external power source.

Postrequisites

For each channel that you configured, perform or verify the corresponding input or output configuration.
When the configuration of a channel is changed, the channel’s behavior will be controlled by the
configuration that is stored for the selected input or output type, and the stored configuration may not be
appropriate for your process.

After verifying channel and output configuration, return the control loop to automatic control.

6.2 Configure the mA Output

The mA Output is used to report the configured process variable. The mA Output parameters control how the
process variable is reported.

Your transmitter may have one or two mA Outputs:

• Channel A is always an mA Output (the primary mA Output).

• Channel B can be configured as an mA Output (the secondary mA Output).

Important

Whenever you change an mA Output parameter, verify all other mA Output parameters before returning the
meter to service. In some situations, the transmitter automatically loads a set of stored values, and these
values may not be appropriate for your application.

6.2.1 Configure mA Output Process Variable

ProLink III

72 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Device Tools → Configuration → I/O → Outputs → mA Output

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MMI-20019038 February 2022

Field Communicator • Configure → Manual Setup → Inputs/Outputs → mA Output 1 → Primary Variable

• Configure → Manual Setup → Inputs/Outputs → mA Output 2 → Secondary Variable

Use mA Output Process Variable to select the variable that is reported over the mA Output.

Prerequisites

• If you plan to configure the output to report volume flow, ensure that you have set Volume Flow Type as

desired: Liquid or Gas Standard Volume.

• If you plan to configure an output to report a concentration measurement process variable, ensure that

the concentration measurement application is configured so that the desired variable is available.

• If you are using the HART variables, be aware that changing the configuration of mA Output Process

Variable will change the configuration of the HART Primary Variable (PV) and/or the HART Secondary
Variable (SV).

Procedure

Set mA Output Process Variable as desired.

Default settings are as follows:

• Primary mA Output: Mass Flow Rate

• Secondary mA Output: Density

Postrequisites

If you changed the setting of mA Output Process Variable, verify the settings of Lower Range Value (LRV)
and Upper Range Value (URV).

Options for mA Output Process Variable

The transmitter provides a basic set of options for mA Output Process Variable, plus several application­specific options. Different communications tools may use different labels for the options.

Table 6-1: Standard mA Output process variables

Process variable Label

ProLink III Field Communicator

Density Density Dens

Drive gain Drive Gain Driv signl

External pressure External Pressure External pres

External temperature External Temperature External temp

Gas standard volume flow rate Gas Standard Volume Flow Rate Gas vol flo

Mass flow rate Mass Flow Rate Mass flo

Temperature Temperature Temp

Volume flow rate Volume Flow Rate Vol flo

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Table 6-2: Petroleum measurement mA Output process variables

Process variable Label

ProLink III Field Communicator

Average corrected density Average Density TC Avg Dens

Average temperature Average Temperature TC Avg Temp

Temperature-corrected (standard)
volume flow rate

Temperature-corrected density Density at Reference Temperature TC Dens

Volume Flow Rate at Reference
Temperature

TC Vol

Table 6-3: Concentration measurement mA Output process variables

Process variable Label

ProLink III Field Communicator

Baume Baume ED Dens (Baume)

Concentration Concentration ED Concentration

Density at reference Density at Reference Temperature ED Dens at Ref

Net mass flow Net Mass Flow Rate ED Net Mass flo

Net volume flow rate Net Volume Flow Rate ED Net Vol flo

Specific gravity Density (Fixed SG Units) ED Dens (SGU)

Standard volume flow rate Volume Flow Rate at Reference

Temperature

ED Std Vol flo

Table 6-4: Fuel consumption mA Output process variables

Process variable Label

ProLink III Field Communicator

Differential mass flow Differential Mass Flow Rate Differential Mass Flow Rate

Table 6-5: PVR mA Output process variables

Process variable Label

ProLink III Field Communicator

Uncorrected oil flow Oil Flow Rate At Line Oil Flow Rate at Line

Uncorrected water cut Water Cut At Line Water Cut at Line

Uuncorrected water flow Water Flow Rate At Line Water Flow Rate at Line

Corrected oil flow Oil Flow Rate At Reference Oil Flow Rate at Reference

Corrected water cut Water Cut At Reference Water Cut at Reference

Corrected water flow Water Flow Rate At Reference Water Flow Rate at Reference

Shrinkage factor corrected net oil at
line

74 Micro Motion 2500 Transmitters with Configurable Input/Outputs

SF Oil Flow Rate At Line Shrinkage Factor Oil Flow Rate at Line

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Table 6-5: PVR mA Output process variables (continued)

Process variable Label

ProLink III Field Communicator

Shrinkage factor corrected net oil at
60F

Shrinkage factor corrected volume of
mix at 60F

SF Oil Flow Rate At Reference Shrinkage Factor Oil Flow Rate at

Reference

SF Volume Flow Rate At Reference Shrinkage Factor Volume Flow Rate at

Reference

6.2.2 Configure Lower Range Value (LRV) and Upper Range Value

(URV)

ProLink III Device Tools → Configuration → I/O → Outputs → mA Output

Field Communicator

The Lower Range Value (LRV) and Upper Range Value (URV) are used to scale the mA Output, that is, to
define the relationship between mA Output Process Variable and the mA Output level.

Prerequisites

Ensure that mA Output Process Variable is set to the desired process variable. Each process variable has its
own set of LRV and URV values. When you change the values of LRV and URV, you are configuring values for
the currently assigned mA Output process variable.

• Configure → Manual Setup → Inputs/Outputs → mA Output 1 → mA Output Settings → PV LRV

• Configure → Manual Setup → Inputs/Outputs → mA Output 1 → mA Output Settings → PV URV

• Configure → Manual Setup → Inputs/Outputs → mA Output 2 → mA Output Settings → SV LRV

• Configure → Manual Setup → Inputs/Outputs → mA Output 2 → mA Output Settings → SV URV

Ensure that the measurement unit for the configured process variable has been set as desired.

Procedure

Set LRV and URV as desired.

• LRVis the value of mA Output Process Variable represented by an output of 4 mA. The default value for

LRV depends on the setting of mA Output Process Variable. Enter LRV in the measurement units that are
configured for mA Output Process Variable.

• URV is the value of mA Output Process Variable represented by an output of 20 mA. The default value for

URV depends on the setting of mA Output Process Variable. Enter URV in the measurement units that are
configured for mA Output Process Variable.

The mA Output uses a range of 4–20 mA to represent mA Output Process Variable. Between LRV and URV,
the mA Output is linear with the process variable. If the process variable drops below LRV or rises above URV,
the transmitter posts an output saturation alert.

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Default values for Lower Range Value (LRV) and Upper Range Value (URV)

Each option for mA Output Process Variable has its own LRV and URV. If you change the configuration of mA
Output Process Variable, the corresponding LRV and URV are loaded and used.

Table 6-6: Default values for Lower Range Value (LRV) and Upper Range Value (URV)

Process variable LRV URV

All mass flow variables –200.000 g/sec 200.000 g/sec

All liquid volume flow variables –0.200 l/sec 0.200 l/sec

All density variables 0.000 g/cm

All temperature variables –240.000 °C 450.000 °C

Drive gain 0.00% 100.00%

Gas standard volume flow –423.78 SCFM 423.78 SCFM

External temperature –240.000 °C 450.000 °C

External pressure 0.000 bar 100.000 bar

3

10.000 g/cm

3

Concentration 0% 100%

Baume 0 10

Specific gravity 0 10

6.2.3 Configure AO Cutoff

ProLink III

Field Communicator • Configure → Manual Setup → Inputs/Outputs → mA Output 1 → mA Output Settings → MAO

AO Cutoff (Analog Output Cutoff) specifies the lowest mass flow rate, volume flow rate, or gas standard
volume flow rate that will be reported through the mA Output. Any flow rates below AO Cutoff will be
reported as 0.

Restriction

AO Cutoff is applied only if mA Output Process Variable is set to Mass Flow Rate, Volume Flow Rate, or Gas
Standard Volume Flow Rate. If mA Output Process Variable is set to a different process variable, AO Cutoff is
not configurable, and the transmitter does not implement the AO cutoff function.

Procedure

Device Tools → Configuration → I/O → Outputs → mA Output

Cutoff

• Configure → Manual Setup → Inputs/Outputs → mA Output 2 → mA Output Settings → MAO

Cutoff

Set AO Cutoff as desired.

The default values for AO Cutoff are as follows:

• Primary mA Output: 0.0 g/sec

• Secondary mA Output: Not-A-Number

76 Micro Motion 2500 Transmitters with Configurable Input/Outputs

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Tip

For most applications, the default value of AO Cutoff should be used. Contact customer service before
changing AO Cutoff.

Interaction between AO Cutoff and process variable cutoffs

When mA Output Process Variable is set to a flow variable (for example, mass flow rate or volume flow rate),
AO Cutoff interacts with Mass Flow Cutoff or Volume Flow Cutoff. The transmitter puts the cutoff into effect

at the highest flow rate at which a cutoff is applicable.

Example: Cutoff interaction

Configuration:

• mA Output Process Variable = Mass Flow Rate

• Frequency Output Process Variable = Mass Flow Rate

• AO Cutoff = 10 g/sec

• Mass Flow Cutoff = 15 g/sec

Result: If the mass flow rate drops below 15 g/sec, all outputs representing mass flow will report zero flow.

Example: Cutoff interaction

Configuration:

• mA Output Process Variable = Mass Flow Rate

• Frequency Output Process Variable = Mass Flow Rate

• AO Cutoff = 15 g/sec

• Mass Flow Cutoff = 10 g/sec

Result:

• If the mass flow rate drops below 15 g/sec but not below 10 g/sec:
— The mA Output will report zero flow.

— The Frequency Output will report the actual flow rate.

• If the mass flow rate drops below 10 g/sec, both outputs will report zero flow.

6.2.4 Configure Added Damping

ProLink III

Field Communicator • Configure → Manual Setup → Inputs/Outputs → mA Output 1 → mA Output Settings → PV Added

Device Tools → Configuration → I/O → Outputs → mA Output

Damping

• Configure → Manual Setup → Inputs/Outputs → mA Output 2 → mA Output Settings → SV Added

Damping

Added Damping

controls the amount of damping that will be applied to the mA Output.

Damping is used to smooth out small, rapid fluctuations in process measurement. Damping Value specifies
the time period (in seconds) over which the transmitter will spread changes in the process variable. At the end
of the interval, the internal value will reflect 63% of the change in the actual measured value.

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Added Damping affects the reporting of mA Output Process Variable through the mA Output only. It does
not affect the reporting of that process variable via any other method (e.g., a Frequency Output or digital
communications), or the value of the process variable used in calculations.

Note

Added Damping is not applied if the mA Output is fixed (for example, during loop testing) or if the mA
Output is reporting a fault. Added Damping is applied while sensor simulation is active.

Procedure

Set Added Damping to the desired value.

The default value is 0.0 seconds. The range is 0.0 to 440 seconds.

When you specify a value for Added Damping, the transmitter automatically rounds the value down to the
nearest valid value.

Note

Added Damping values are affected by the setting of Update Rate and 100 Hz Variable.

Table 6-7: Valid values for Added Damping

Update rate

Setting of Update Rate

Normal N/A 20 Hz 0.0, 0.1, 0.3, 0.75, 1.6, 3.3, 6.5, 13.5, 27.5,

Special 100 Hz variable (if assigned

Process variable

to the mA Output)

100 Hz variable (if not
assigned to the mA Output)

All other process variables

in effect

100 Hz 0.0, 0.04, 0.12, 0.30, 0.64, 1.32, 2.6, 5.4,

6.25 Hz 0.0, 0.32, 0.96, 2.40, 5.12, 10.56, 20.8,

Valid values for Added Damping

55, 110, 220, 440

11, 22, 44, 88, 176, 350

43.2, 88, 176, 352

Interaction between mA Output Damping and process variable damping

When mA Output Source is set to a flow rate variable, density, or temperature, mA Output Damping
interacts with Flow Damping, Density Damping, or Temperature Damping. If multiple damping parameters
are applicable, the effect of damping the process variable is calculated first, and the mA Output damping
calculation is applied to the result of that calculation.

Example: Damping interaction

Configuration:

• Flow Damping = 1 second

• mA Output Source = Mass Flow Rate

• mA Output Damping = 2 seconds

Result: A change in the mass flow rate will be reflected in the mA Output over a time period that is greater
than 3 seconds. The exact time period is calculated by the transmitter according to internal algorithms which
are not configurable.

78 Micro Motion 2500 Transmitters with Configurable Input/Outputs

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6.2.5 Configure mA Output Fault Action and mA Output Fault Level

ProLink III Device Tools → Configuration → Fault Processing

Field Communicator • Configure → Manual Setup → Inputs/Outputs → mA Output 1 → MA01 Fault Settings

• Configure → Manual Setup → Inputs/Outputs → mA Output 2 → MA02 Fault Settings

mA Output Fault Action controls the behavior of the mA Output if the transmitter encounters an internal
fault condition.

Note

For some faults only: If Fault Timeout is set to a non-zero value, the transmitter will not implement the fault
action until the timeout has elapsed.

Procedure

1. Set mA Output Fault Action to the desired value.

The default setting is Downscale.

Restriction

If Digital Communications Fault Action is set to NAN (not a number), you cannot set mA Output Fault
Action or Frequency Output Fault Action to None. If you try to do this, the transmitter will not accept

the configuration.

2. If you set mA Output Fault Action to Upscale or Downscale, set mA Output Fault Level as desired.

Postrequisites

NOTICE

If you set mA Output Fault Action or Frequency Output Fault Action to None, be sure to set Digital
Communications Fault Action to None. If you do not, the output will not report actual process data, and this

may result in measurement errors or unintended consequences for your process.

Options for mA Output Fault Action and mA Output Fault Level

Option

Upscale Goes to the configured fault level Default: 22.0 mA

Downscale (default) Goes to the configured fault level Default: 2.0 mA

Internal Zero Goes to the mA Output level associated with a

None Tracks data for the assigned process variable; no

mA Output behavior

process variable value of 0 (zero), as determined
by Lower Range Value and Upper Range Value
settings

fault action

mA Output Fault Level

Range: 21.0 to 24.0 mA

Range: 1.0 to 3.6 mA

Not applicable

Not applicable

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6.3 Configure the Frequency Output

The Frequency Output is used to report a process variable. The Frequency Output parameters control how the
process variable is reported. Your transmitter may have zero, one, or two Frequency Outputs, depending on
the configuration of Channels B and C. If both Channels B and C are configured as Frequency Outputs, they
are electrically isolated but not independent. You cannot configure them separately.

Important

Whenever you change a Frequency Output parameter, verify all other Frequency Output parameters before
returning the flowmeter to service. In some situations, the transmitter automatically loads a set of stored
values, and these values may not be appropriate for your application.

6.3.1 Configure Frequency Output Process Variable

ProLink III Device Tools → Configuration → I/O → Outputs → Frequency Output

Field Communicator Configure → Manual Setup → Inputs/Outputs → Frequency Output → FO Settings → Third Variable

Frequency Output Process Variable controls the variable that is reported over the Frequency Output.

Prerequisites

If you plan to configure the output to report volume flow, ensure that you have set Volume Flow Type as
desired: Liquid or Gas Standard Volume.

If you plan to configure an output to report a concentration measurement process variable, ensure that the
concentration measurement application is configured so that the desired variable is available.

If you are using the HART variables, be aware that changing the configuration of Frequency Output Process
Variable will change the configuration of the HART Tertiary Variable (TV).

Procedure

Set Frequency Output Process Variable as desired.

The default setting is Mass Flow Rate.

Options for Frequency Output Process Variable

The transmitter provides a basic set of options for Frequency Output Process Variable, plus several
application-specific options. Different communications tools may use different labels for the options.

Table 6-8: Standard FO process variables

Process variable Label

ProLink III Field Communicator

Gas standard volume flow rate Gas Standard Volume Flow Rate Gas vol flo

Mass flow rate Mass Flow Rate Mass flo

Volume flow rate Volume Flow Rate Vol flo

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Table 6-9: Petroleum measurement FO process variables

Process variable Label

ProLink III Field Communicator

Temperature-corrected (standard)
volume flow rate

Volume Flow Rate at Reference
Temperature

TC Vol

Table 6-10: Concentration measurement FO process variables

Process variable Label

ProLink III Field Communicator

Net mass flow Net Mass Flow Rate ED Net Mass flo

Net volume flow rate Net Volume Flow Rate ED Net Vol flo

Standard volume flow rate Volume Flow Rate at Reference

Temperature

ED Std Vol flo

Table 6-11: Fuel consumption FO process variables

Process variable Label

ProLink III Field Communicator

Differential mass flow Differential Mass Flow Rate Differential Mass Flow Rate

6.3.2 Configure Frequency Output Polarity

ProLink III

Field Communicator Configure → Manual Setup → Inputs/Outputs → Frequency Output → FO Settings → FO Polarity

Device Tools → Configuration → I/O → Outputs → Frequency Output

Frequency Output Polarity controls how the output indicates the ON (active) state. The default value, Active

High, is appropriate for most applications. Your receiving device might require an Active Low setting.

Procedure

Set Frequency Output Polarity as desired.

The default setting is Active High.

Options for Frequency Output Polarity

Polarity option

Active High 0 As determined by power supply,

Active Low As determined by power supply,

Configuration and Use Manual 81

Reference voltage (OFF) Pulse voltage (ON)

pull-up resistor, and load. See
the installation manual for your
transmitter.

0
pull-up resistor, and load. See
the installation manual for your
transmitter.

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February 2022 MMI-20019038

6.3.3 Configure Frequency Output Scaling Method

ProLink III Device Tools → Configuration → I/O → Outputs → Frequency Output

Field Communicator Configure → Manual Setup → Inputs/Outputs → Frequency Output → FO Scaling

Frequency Output Scaling Method defines the relationship between output pulse and flow units. Set
Frequency Output Scaling Method as required by your frequency receiving device.

Procedure

1. Set Frequency Output Scaling Method.

Option Description

Frequency=Flow (default) Frequency calculated from flow rate

Pulses/Unit A user-specified number of pulses represents one flow unit

Units/Pulse A pulse represents a user-specified number of flow units

2. Set additional required parameters.

• If you set Frequency Output Scaling Method to Frequency=Flow, set Rate Factor and Frequency

Factor.

• If you set Frequency Output Scaling Method to Pulses/Unit, define the number of pulses that will

represent one flow unit.

• If you set Frequency Output Scaling Method to Units/Pulse, define the number of units that each

pulse will indicate.

For all scaling methods, the transmitter puts out a fixed number of pulses per unit, and at the same
time, the Frequency Output signal varies in proportion to flowrate.

Calculate frequency from flow rate

The Frequency=Flow option is used to customize the Frequency Output for your application when you do not
know appropriate values for Units/Pulse or Pulses/Unit.

If you specify Frequency=Flow, you must provide values for Rate Factor and Frequency Factor:

Rate Factor

Frequency Factor

The maximum flow rate that you want the Frequency Output to report.

A value calculated as follows:

FrequencyFactor

where:

RateFactor

T

 × N

T

Factor to convert selected time base to seconds

N

Number of pulses per flow unit, as configured in the receiving device

The resulting Frequency Factor must be within the range of the Frequency Output 0 to 10,000 Hz:

• If Frequency Factor is less than 1 Hz, reconfigure the receiving device for a higher pulses/unit setting.

82 Micro Motion 2500 Transmitters with Configurable Input/Outputs

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• If Frequency Factor is greater than 10,000 Hz, reconfigure the receiving device for a lower pulses/unit

setting.

6.3.4 Configure Frequency Output Mode

ProLink III Device Tools → Configuration → I/O → Outputs → Frequency Output

Field communicator Not available

Frequency Output Mode defines the relationship between the two Frequency Outputs (dual-pulse mode).

Prerequisites

Before configuring Frequency Output Mode, ensure that both Channel B and Channel C are configured to
operate as Frequency Outputs. If you do not have two Frequency Outputs on your transmitter, Frequency
Output Mode is set to Single and cannot be changed.

Procedure

Set Frequency Output Mode as desired.

The default value is Quadrature.

Options for Frequency Output Mode

Option Channel behavior Process condition

In-Phase
50% duty cycle

90° Phase Shift
50% duty cycle

–90° Phase Shift
50% duty cycle

180° Phase Shift
50% duty cycle

Quadrature
50% duty cycle

(1)

Channel B

Channel C

Channel B

Channel C

Channel B

Channel C

Channel B

Channel C

Channel B Forward flow

Channel C

Channel B Reverse flow

Channel C

Channel B Fault condition

Channel C

Channel C lags Channel B by 90°

Channel C leads Channel B by 90°

Channel C is driven to 0

(1) Quadrature mode is used only for specific Weights & Measures applications where required by law.

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6.3.5 Configure Frequency Output Fault Action and Frequency

Output Fault Level

ProLink III Device Tools → Configuration → Fault Processing

Field Communicator • Configure → Manual Setup → Inputs/Outputs → Frequency Output → FO Fault Parameters → FO

Frequency Output Fault Action controls the behavior of the Frequency Output if the transmitter encounters
an internal fault condition.

Note

For some faults only: If Fault Timeout is set to a non-zero value, the transmitter will not implement the fault
action until the timeout has elapsed.

Procedure

1. Set Frequency Output Fault Action as desired.

The default value is Downscale (0 Hz).

Fault Action

• Configure → Manual Setup → Inputs/Outputs → Frequency Output → FO Fault Parameters → FO

Fault Level

2. If you set Frequency Output Fault Action to Upscale, set Frequency Fault Level to the desired value.

The default value is 15000 Hz. The range is 10 to 15000 Hz.

Options for Frequency Output Fault Action

Table 6-12: Options for Frequency Output Fault Action

Frequency output behavior

Label

Upscale Goes to configured Upscale value:

Downscale 0 Hz Channel B: goes to configured Upscale

Internal Zero 0 Hz Channel B: Goes to configured Upscale

None (default) Tracks data for the assigned process

All modes except Quadrature Quadrature mode

Channel B: Goes to configured Upscale

• Range: 10 Hz to 15000 Hz

• Default: 15000 Hz

variable; no fault action

value
Channel C: 0 Hz

value
Channel C: 0 Hz

value
Channel C: 0 Hz

Channel B: Tracks data for the assigned
process variable

Channel C: Tracks data for the assigned
process variable

If your transmitter has two Frequency Outputs, their fault behavior is the same for all modes except
Quadrature.

84 Micro Motion 2500 Transmitters with Configurable Input/Outputs

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NOTICE

If you set mA Output Fault Action or Frequency Output Fault Action to None, be sure to set Digital
Communications Fault Action to None. If you do not, the output will not report actual process data, and this

may result in measurement errors or unintended consequences for your process.

Restriction

If Digital Communications Fault Action is set to NAN (not a number), you cannot set mA Output Fault
Action or Frequency Output Fault Action to None. If you try to do this, the transmitter will not accept the

configuration.

6.4 Configure the Discrete Output

The Discrete Output is used to report specific meter or process conditions. The Discrete Output parameters
control which condition is reported and how it is reported. Your transmitter may have zero, one, or two
Discrete Outputs, depending on the configuration of Channels B and C. If both Channels B and C are
configured as Discrete Output, they operate independently and you can configure them separately.

Restriction

Before you can configure the Discrete Output, you must configure a channel to operate as a Discrete Output.

Important

Whenever you change a Discrete Output parameter, verify all other Discrete Output parameters before
returning the meter to service. In some situations, the transmitter automatically loads a set of stored values,
and these values may not be appropriate for your application.

6.4.1 Configure Discrete Output Source

ProLink III

Field Communicator • Configure → Manual Setup → Inputs/Outputs → Discrete Output → DO 1 Assignment

Discrete Output Source controls which device condition or process condition is reported via the Discrete
Output.

Procedure

Set Discrete Output Source to the desired option.

Default settings for Discrete Output Source are as follows:

• Discrete Output 1: Flow Direction

• Discrete Output 2: Flow Switch, with Flow Switch Variable set to Mass Flow Rate, Flow Switch Setpoint

set to 0.0 g/s, and Flow Switch Hysteresis set to 0.05 (5%).

Device Tools → Configuration → I/O → Outputs → Discrete Output

• Configure → Manual Setup → Inputs/Outputs → Discrete Output → DO 2 Assignment

Options for Discrete Output Source

Option

ProLink III Field Communicator

Discrete Event 1–5

Configuration and Use Manual 85

(1)

Enhanced Event 1 Discrete Event x ON Site-specific

Label State Discrete Output

voltage

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February 2022 MMI-20019038

Option Label State Discrete Output

ProLink III Field Communicator

voltage

Enhanced Event 2
Enhanced Event 3
Enhanced Event 4
Enhanced Event 5

Event 1–2

Flow Switch Flow Switch Indicator Flow Switch ON Site-specific

Flow Direction Forward Reverse

Calibration in Progress Calibration in Progress Calibration in Progress ON Site-specific

Fault Fault Indication Fault ON Site-specific

(1) Events configured using the enhanced event model.
(2) Events configured using the basic event model.

(2)

Event 1
Event 2

Event 1 or Event 2
Status

Indicator

Event 1
Event 2

Event 1 or Event 2

Forward/Reverse Forward flow 0 V

OFF 0 V

ON Site-specific

OFF 0 V

OFF 0 V

Reverse flow Site-specific

OFF 0 V

OFF 0 V

Important

If you assign Flow Switch to the Discrete Output, you should also configure Flow Switch Variable, Flow
Switch Setpoint, and Hysteresis.

Note

If your transmitter has two Discrete Outputs:

• You can configure them independently. For example, you can assign one to Flow Switch and one to Fault.

• If you assign both to Flow Switch, the same settings for Flow Switch Variable, Flow Switch Setpoint, and

Flow Switch Hysteresis will be implemented for both Discrete Outputs.

Related information

Configure an enhanced event
Fault indication with a Discrete Output

Configure Flow Switch parameters

ProLink III

Field Communicator • Configure → Manual Setup → Inputs/Outputs → Discrete Output → Flow Switch Source

86 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Device Tools → Configuration → I/O → Outputs → Discrete Output

• Configure → Manual Setup → Inputs/Outputs → Discrete Output → Flow Switch Setpoint

• Configure → Manual Setup → Inputs/Outputs → Discrete Output → Hysteresis

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Flow Switch is used to indicate that the flow rate (measured by the configured flow variable) has moved past
the configured setpoint, in either direction. The flow switch is implemented with a user-configurable
hysteresis.

Procedure

1. Set Discrete Output Source to Flow Switch, if you have not already done so.

2. Set Flow Switch Variable to the flow variable that you want to use to control the flow switch.

3. Set Flow Switch Setpoint to the value at which the flow switch will be triggered (after Hysteresis is

applied).

• If the flow rate is below this value, the Discrete Output is ON.

• If the flow rate is above this value, the Discrete Output is OFF.

4. Set Hysteresis to the percentage of variation above and below the setpoint that will operate as a

deadband.
Hysteresis defines a range around the setpoint within which the flow switch will not change. The

default is 5%. The valid range is 0.1% to 10%.

Example

If Flow Switch Setpoint = 100 g/sec and Hysteresis = 5%, and the first measured flow rate is above
100 g/sec, the Discrete Output is OFF. It will remain OFF unless the flow rate drops below 95 g/sec. If

this happens, the Discrete Output will turn ON, and remain ON until the flow rate rises above
105 g/sec. At this point it turns OFF and will remain OFF until the flow rate drops below 95 g/sec.

6.4.2 Configure Discrete Output Polarity

ProLink III

Field Communicator • Configure → Manual Setup → Inputs/Outputs → Discrete Output → DO 1 Polarity

Discrete Outputs have two states: ON (active) and OFF (inactive). Two different voltage levels are used to
represent these states. Discrete Output Polarity controls which voltage level represents which state.

Procedure

Set Discrete Output Polarity as desired.

The default setting is Active High.

Options for Discrete Output Polarity

Polarity option

Active High Internal • When asserted (condition

Device Tools → Configuration → I/O → Outputs → Discrete Output

• Configure → Manual Setup → Inputs/Outputs → Discrete Output → DO 2 Polarity

Discrete output power supply Description

tied to DO is true), the circuit
provides a pull-up to 15 V.

• When not asserted

(condition tied to DO is
false), the circuit provides
0 V.

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Polarity option Discrete output power supply Description

External • When asserted (condition

tied to DO is true), the circuit
provides a pull-up to a site­specific voltage, maximum
30 V.

• When not asserted

(condition tied to DO is
false), the circuit provides
0 V.

Active Low Internal • When asserted (condition

tied to DO is true), the circuit
provides 0 V.

• When not asserted

(condition tied to DO is
false), the circuit provides a
pull-up to 15 V.

External • When asserted (condition

tied to DO is true), the circuit
provides 0 V.

• When not asserted

(condition tied to DO is
false), the circuit provides a
pull-up to a site-specific
voltage, to a maximum of
30 V.

6.4.3 Configure Discrete Output Fault Action

ProLink III

Field Communicator • Configure → Manual Setup → Inputs/Outputs → Discrete Output → DO 1 Fault Action

Discrete Output Fault Action controls the behavior of the Discrete Output if the transmitter encounters an
internal fault condition.

Note

For some faults only: If Fault Timeout is set to a non-zero value, the transmitter will not implement the fault
action until the timeout has elapsed.

NOTICE

Do not use Discrete Output Fault Action as a fault indicator. If you do, you may not be able to distinguish a
fault condition from a normal operating condition. If you want to use the Discrete Output as a fault indicator,
set Discrete Output Source to Fault and set Discrete Output Fault Action to None.

Procedure

Set Discrete Output Fault Action as desired.

Device Tools → Configuration → Fault Processing

• Configure → Manual Setup → Inputs/Outputs → Discrete Output → DO 2 Fault Action

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The default setting is None.

Related information

Fault indication with a Discrete Output

Options for Discrete Output Fault Action

Label Discrete Output behavior

Upscale • Fault: Discrete Output is ON (site-specific voltage)

• No fault: Discrete Output is controlled by its assignment

Downscale • Fault: Discrete Output is OFF (0 V)

• No fault: Discrete Output is controlled by its assignment

None (default) Discrete Output is controlled by its assignment

Fault indication with a Discrete Output

To indicate faults via a Discrete Output, set Discrete Output Source to Fault. Then, if a fault occurs, the
Discrete Output is always ON and the setting of Discrete Output Fault Action is ignored.

6.5 Configure the Discrete Input

The Discrete Input is used to initiate one or more transmitter actions from a remote input device. Your
transmitter may have zero or one Discrete Input, depending on the configuration of Channel C.

The Discrete Input parameters include:

• Discrete Input Action

• Discrete Input Polarity

Important

Whenever you change a Discrete Input parameter, verify all other Discrete Input parameters before returning
the flowmeter to service. In some situations, the transmitter automatically loads a set of stored values, and
these values may not be appropriate for your application.

6.5.1 Configure Discrete Input Action

ProLink III

Field Communicator Configure → Manual Setup → Inputs/Outputs → Discrete Input → DI Assignment

Discrete Input Action controls the action or actions that the transmitter will perform when the Discrete Input
transitions from OFF to ON.

Important

Before assigning actions to an enhanced event or Discrete Input, check the status of the event or the remote
input device. If it is ON, all assigned actions will be performed when the new configuration is implemented. If
this is not acceptable, wait until an appropriate time to assign actions to the event or Discrete Input.

Device Tools → Configuration → I/O → Action Assignment

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Procedure

1. Select an action.

2. Select the Discrete Input that will perform the selected action.

3. Repeat until you have assigned all the actions to be performed by the Discrete Input.

Options for Discrete Input Action

Table 6-13: Standard options

Action Label

ProLink III Field Communicator

None (default) None None

Start sensor zero Start Sensor Zero Perform auto zero

Start/stop all totalizers Start/Stop All Totalization Start/stop totals

Reset mass total Reset Mass Total Reset mass total

Reset volume total Reset Volume Total Reset volume total

Reset gas standard volume total Reset Gas Std Volume Total Reset gas standard volume total

Reset all totals Reset All Totals Reset totals

Table 6-14: Petroleum measurement options

Action Label

ProLink III Field Communicator

Reset temperature-corrected volume
total

Reset Volume Total at Reference
Temperature

Reset corrected volume total

Table 6-15: Concentration measurement options

Action Label

ProLink III Field Communicator

Reset CM reference volume total Reset Volume Total at Reference

Temperature

Reset CM net mass total Reset Net Mass Total Not available

Reset CM net volume total Reset Net Volume Total Not available

Increment CM matrix Increment Concentration Matrix Not available

Not available

Table 6-16: Meter verification options

Action Label

ProLink III Field Communicator

Start meter verification test Start Meter Verification Not available

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6.5.2 Configure Discrete Input Polarity

ProLink III Device Tools → Configuration → I/O → Inputs → Discrete Input

Field Communicator Configure → Manual Setup → Inputs/Outputs → Discrete Input → DI Polarity

The Discrete Input has two states: ON and OFF. Discrete Input Polarity controls how the transmitter maps
the incoming voltage level to the ON and OFF states.

Procedure

Set Discrete Input Polarity as desired.

The default setting is Active Low.

Options for Discrete Input Polarity

Polarity option Discrete Input power

supply

Active High Internal Voltage across terminals

External Voltage applied across

Active Low Internal Voltage across terminals

External Voltage applied across

Voltage Status of discrete input

is high

Voltage across terminals
is 0 VDC

terminals is 3–30 VDC

Voltage applied across
terminals is <0.8 VDC

is 0 VDC

Voltage across terminals
is high

terminals is <0.8 VDC

Voltage applied across
terminals is 3–30 VDC

6.6 Configure events

at transmitter

ON

OFF

ON

OFF

ON

OFF

ON

OFF

An event occurs when the real-time value of a user-specified process variable moves past a user-defined
setpoint. Events are used to provide notification of process changes or to perform specific transmitter actions
if a process change occurs.

Your transmitter supports two event models:

• Basic event model

• Enhanced event model

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6.6.1 Configure a basic event

ProLink III Device Tools → Configuration → Events → Basic Events

Field Communicator Not available

A basic event is used to provide notification of process changes. A basic event occurs (is ON) if the real-time
value of a user-specified process variable moves above (HI) or below (LO) a user-defined setpoint. You can
define up to two basic events. Event status can be queried via digital communications, and a Discrete Output
can be configured to report event status.

Procedure

1. Select the event that you want to configure.

2. Specify Event Type.

Option Description

HI x > A

The event occurs when the value of the assigned process variable (x) is greater
than the setpoint (Setpoint A), endpoint not included.

LO x < A

The event occurs when the value of the assigned process variable (x) is less than
the setpoint (Setpoint A), endpoint not included.

3. Assign a process variable to the event.

4. Set a value for Setpoint A.

5. Optional: Configure a Discrete Output to switch states in response to the event status.

6.6.2 Configure an enhanced event

ProLink III

Field Communicator Configure → Alert Setup → Discrete Events

An enhanced event is used to provide notification of process changes and, optionally, to perform specific
transmitter actions if the event occurs. An enhanced event occurs (is ON) if the real-time value of a user­specified process variable moves above (HI) or below (LO) a user-defined setpoint, or in range (IN) or out of
range (OUT) with respect to two user-defined setpoints. You can define up to five enhanced events.

Procedure

1. Select the event that you want to configure.

2. Specify Event Type.

Device Tools → Configuration → Events → Enhanced Events

Option

HI x > A

92 Micro Motion 2500 Transmitters with Configurable Input/Outputs

Description

The event occurs when the value of the assigned process variable (x) is greater
than the setpoint (Setpoint A), endpoint not included.

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Option Description

LO x < A

The event occurs when the value of the assigned process variable (x) is less than
the setpoint (Setpoint A), endpoint not included.

IN A ≤ x ≤ B

The event occurs when the value of the assigned process variable (x) is in range,
that is, between Setpoint A and Setpoint B, endpoints included.

OUT x ≤ A or x ≥ B

The event occurs when the value of the assigned process variable (x) is out of
range, that is, less than Setpoint A or greater than Setpoint B, endpoints
included.

3. Assign a process variable to the event.

4. Set values for the required setpoints.

• For HI and LO events, set Setpoint A.

• For IN and OUT events, set Setpoint A and Setpoint B.

5. Optional: Configure a Discrete Output to switch states in response to the event status.

6. Optional: Specify the action or actions that the transmitter will perform when the event occurs.

• With ProLink III: Device Tools → Configuration → I/O → Action Assignment

• With a field communicator: Configure → Alert Setup → Discrete Events → Assign Discrete Action

Options for Enhanced Event Action

Table 6-17: Standard options

Action Label

ProLink III Field Communicator

None (default) None None

Start sensor zero Start Sensor Zero Perform auto zero

Start/stop all totalizers Start/Stop All Totalization Start/stop totals

Reset mass total Reset Mass Total Reset mass total

Reset volume total Reset Volume Total Reset volume total

Reset gas standard volume total Reset Gas Std Volume Total Reset gas standard volume total

Reset all totals Reset All Totals Reset totals

Table 6-18: Petroleum measurement options

Action Label

ProLink III Field Communicator

Reset temperature-corrected volume
total

Configuration and Use Manual 93

Reset Volume Total at Reference
Temperature

Reset corrected volume total

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Table 6-19: Concentration measurement options

Action Label

ProLink III Field Communicator

Reset CM reference volume total Reset Volume Total at Reference

Temperature

Reset CM net mass total Reset Net Mass Total Not available

Reset CM net volume total Reset Net Volume Total Not available

Increment CM matrix Increment Concentration Matrix Not available

Table 6-20: Meter verification options

Action Label

ProLink III Field Communicator

Start meter verification test Start Meter Verification Not available

Not available

6.7 Configure digital communications

The digital communications parameters control how the transmitter will communicate using digital
communications.

Your transmitter supports the following types of digital communications:

• HART/Bell 202 over the primary mA terminals

• Modbus/RS-485 over the RS-485 terminals

• Modbus RTU via the service port

Note

The service port responds automatically to a wide range of connection requests. It is not configurable.

6.7.1 Configure HART/Bell 202 communications

HART/Bell 202 communications parameters support HART communications with the transmitter's primary
mA terminals over a HART/Bell 202 network.

Configure basic HART parameters

Basic HART parameters include the HART address, HART tags, and the operation of the primary mA Output.

HART/Bell 202 communications parameters support HART communication with the transmitter's primary mA
terminals over a HART/Bell 202 network. The HART/Bell 202 communications parameters include:

• HART Address (Polling Address)

• mA Output Action

• Burst Parameters (optional)

• HART Variables (optional)

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Procedure

1. Set HART Address to a value that is unique on your network.

• Default: 0

• Range: 0 to 15

Tip

• The default address is typically used unless you are in a multidrop environment.

• Devices using HART protocol to communicate with the transmitter may use either HART Address or

HART Tag (Software Tag) to identify the transmitter. Configure either or both, as required by your
other HART devices.

2. Ensure that mA Output Action is configured appropriately.

Option Description

Enabled (Live) The primary mA Output reports process data as configured.

Disabled (Fixed) The primary mA Output is fixed at 4 mA and does not report process data.

Important

If you use ProLink III to set HART Address to 0, the program automatically enables mA Output Action.
If you use ProLink III to set HART Address to any other value, the program automatically disables mA
Output Action. This is designed to make it easier to configure the transmitter for legacy behavior.
Always verify mA Output Action after setting HART Address.

Configure burst parameters

ProLink III

Field Communicator Configure → Manual Setup → Inputs/Outputs → Communications → Set Up Burst Mode

Burst mode is a mode of communication during which the transmitter regularly broadcasts HART digital
information over the primary mA Output. The burst parameters control the information that is broadcast
when burst mode is enabled.

Tip

In typical installations, burst mode is disabled. Enable burst mode only if you are using a HART Triloop.

Procedure

1. Enable Burst Mode.

2. Set Burst Mode Output as desired.

Device Tools → Configuration → Communications → Communications (HART)

Label

Description

ProLink III Field Communicator

Source (Primary Variable) PV The transmitter sends the primary variable (PV) in the

configured measurement units in each burst (e.g.,

14.0 g/sec, 13.5 g/sec, 12.0 g/sec.

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Label Description

ProLink III Field Communicator

Primary Variable (Percent
Range/Current)

Process Variables/Current Process variables/current The transmitter sends PV, SV, TV, and QV values in

Transmitter variables Fld dev var The transmitter sends four user-specified process variables

% range/current The transmitter sends the PV’s percent of range and the

PV’s actual mA level in each burst (e.g., 25%, 11.0 mA.

measurement units and the PV’s actual milliamp reading in
each burst (e.g., 50 g/sec, 23 °C, 50 g/sec, 0.0023 g/cm3,

11.8 mA.

in each burst.

3. Ensure that the burst output variables are set appropriately.

• If you set Burst Mode Output to send four user-specified variables, set the four process variables to

be sent in each burst.

• If you set Burst Mode Output to any other option, ensure that the HART variables are set as desired.

Configure HART variables (PV, SV, TV, QV)

ProLink III Device Tools → Configuration → Communications → Communications (HART)

Field Communicator Configure → Manual Setup → Inputs/Outputs → Variable Mapping

The HART variables are a set of four variables predefined for HART use. The HART variables include the
Primary Variable (PV), Secondary Variable (SV), Tertiary Variable (TV), and Quaternary Variable (QV). You can
assign specific process variables to the HART variables, and then use standard HART methods to read or
broadcast the assigned process data.

Tip

The Tertiary Variable and Quaternary Variable are also called the Third Variable (TV) and Fourth Variable (FV).

Options for HART variables

Table 6-21: Standard HART process variables

Process variable Primary

Variable (PV)

Board Temperature ✓

Density ✓ ✓ ✓

Drive Gain ✓ ✓ ✓

External Pressure ✓ ✓ ✓

External Temperature ✓ ✓ ✓

Gas Standard Volume Flow Rate ✓ ✓ ✓ ✓

Gas Standard Volume Inventory ✓

Gas Standard Volume Total ✓

Line (Gross) Volume Flow Rate ✓ ✓ ✓ ✓

Secondary
Variable (SV)

Third Variable
(TV)

Fourth
Variable (QV )

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Table 6-21: Standard HART process variables (continued)

Process variable Primary

Variable (PV)

Line (Gross) Volume Inventory ✓

Line (Gross) Volume Total ✓

Live Zero ✓

LPO Amplitude ✓

Mass Flow Rate ✓ ✓ ✓ ✓

Mass Inventory ✓

Mass Total ✓

Meter Temperature (T-Series) ✓

RPO Amplitude ✓

Temperature ✓ ✓ ✓

Tube Frequency ✓

Secondary
Variable (SV)

Third Variable
(TV)

Table 6-22: Petroleum measurement HART process variables

Process variable Primary

Variable (PV)

API Average Density ✓ ✓ ✓

Secondary
Variable (SV)

Third Variable
(TV)

Fourth
Variable (QV )

Fourth
Variable (QV )

API Average Temperature ✓ ✓ ✓

API Corrected Volume Flow ✓ ✓ ✓ ✓

API Corrected Volume Inventory ✓

API Corrected Volume Total ✓

API CTL ✓

API Density At Reference ✓ ✓ ✓

Table 6-23: Concentration measurement HART process variables

Process variable Primary

Variable (PV)

CM Baume (700 core processor only) ✓ ✓ ✓

CM Concentration ✓ ✓ ✓

CM Density at Reference ✓ ✓ ✓

CM Net Mass Flow ✓ ✓ ✓ ✓

CM Net Mass Inventory ✓

CM Net Mass Total ✓

CM Net Volume Flow ✓ ✓ ✓ ✓

CM Net Volume Inventory ✓

Secondary
Variable (SV)

Third Variable
(TV)

Fourth
Variable (QV )

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Table 6-23: Concentration measurement HART process variables (continued)

Process variable Primary

Variable (PV)

CM Net Volume Total ✓

CM Specific Gravity ✓ ✓ ✓

CM Standard Volume Flow ✓ ✓ ✓ ✓

CM Standard Volume Inventory ✓

CM Standard Volume Total ✓

Secondary
Variable (SV)

Third Variable
(TV)

Table 6-24: Fuel consumption HART process variables

Process variable Primary

Variable (PV)

Differential mass flow ✓ ✓ ✓ ✓

Differential mass inventory ✓

Differential mass total ✓

Secondary
Variable (SV)

Third Variable
(TV)

Table 6-25: PVR-only HART process variables

Process variable Primary

Variable (PV)

Corrected Oil Flow ✓ ✓ ✓

Secondary
Variable (SV)

Third Variable
(TV)

Fourth
Variable (QV )

Fourth
Variable (QV )

Fourth
Variable (QV )

Corrected Oil Total ✓

Corrected Water Cut ✓ ✓ ✓

Corrected Water Flow ✓ ✓ ✓

Corrected Water Total ✓

Density of Oil @ Line Fixd degAPI ✓

Density of Oil @ Line Fixd SGU ✓

Oil Total @ Line ✓

Shrinkage Factor Corrected Oil Flow @ 60F ✓ ✓ ✓

Shrinkage Factor Corrected Oil Flow @ Line ✓ ✓ ✓

Shrinkage Factor Corrected Oil Total @ 60F ✓

Shrinkage Factor Corrected Oil Total @ Line ✓

Shrinkage Factor Corrected Total of Mix @ 60F ✓

Shrinkage Factor Corrected Volume Of Mix @ 60F ✓ ✓ ✓

Uncorrected Oil Flow ✓ ✓ ✓

Uncorrected Water Cut ✓ ✓ ✓

Uncorrected Water Flow ✓ ✓ ✓

Volume Flow of Mix at Line ✓ ✓ ✓

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Table 6-25: PVR-only HART process variables (continued)

Process variable Primary

Variable (PV)

Volume Total Of Mix @ Line ✓

Water Total @ Line ✓

Secondary
Variable (SV)

Third Variable
(TV)

Table 6-26: TMR-only HART process variables

Process variable Primary

Variable (PV)

Remediated Mass Flow ✓ ✓ ✓

Remediated Mass Total ✓

Remediated Mass Inventory ✓

Secondary
Variable (SV)

Third Variable
(TV)

Table 6-27: PVR- and TBR-only HART process variables

Process variable Primary

Variable (PV)

Unremediated Density ✓ ✓ ✓

Secondary
Variable (SV)

Third Variable
(TV)

Table 6-28: PVR, TBR, and TMR HART process variables

Process variable Primary

Variable (PV)

Secondary
Variable (SV)

Third Variable
(TV)

Fourth
Variable (QV )

Fourth
Variable (QV )

Fourth
Variable (QV )

Fourth
Variable (QV )

Total Remediated Time ✓

Interaction of HART variables and transmitter outputs

The HART variables are automatically reported through specific transmitter outputs. They may also be
reported through HART burst mode, if enabled on your transmitter.

Table 6-29: HART variables and transmitter outputs

HART variable Reported via Comments

Primary Variable (PV) Primary mA output If one assignment is changed, the other is changed

automatically, and vice versa.

Secondary Variable (SV) Secondary mA Output (if

present on your transmitter)

Tertiary Variable (TV) Frequency Output (if

present on your transmitter)

Quaternary Variable (QV) Not associated with an

output

If one assignment is changed, the other is changed
automatically, and vice versa. If your transmitter is not
configured for a secondary mA Output, the SV must be
configured directly, and the value of the SV is available only
via digital communications.

If one assignment is changed, the other is changed
automatically, and vice versa. If your transmitter does not
have a Frequency Output, the TV must be configured
directly, and the value of the TV is available only via digital
communications.

The QV must be configured directly, and the value of the
QV is available only via digital communications.

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6.7.2 Configure Modbus/RS-485 communications

ProLink III Device Tools → Configuration → Communications → RS-485 Terminals

Field Communicator Configure → Manual Setup → Inputs/Outputs → Communications → Set Up RS-485 Port

Modbus/RS-485 communications parameters control Modbus communication with the transmitter's RS-485
terminals.

Procedure

1. Set Disable Modbus ASCII as desired.

Support for Modbus ASCII limits the set of addresses that are available for the transmitter's Modbus
address.

Modbus ASCII support Available Modbus addresses

Disabled 1–127, excluding 111 (111 is reserved to the service port)

Enabled 1–15, 32–47, 64–79, and 96–110

2. Set Protocol to match the protocol used by your Modbus/RS-485 host.

Option Description

Modbus RTU (default) 8–bit communications

Modbus ASCII 7–bit communications

If support for Modbus ASCII is disabled, you must use Modbus RTU.

3. Set Modbus Address to a unique value on the network.

4. Set Parity, Stop Bits, and Baud Rate as appropriate for your network.

5. Set Floating-Point Byte Order to match the byte order used by your Modbus host.

Code

Byte order

0 1–2 3–4

1 3–4 1–2

2 2–1 4–3

3 4–3 2–1

See the following table for the bit structure of bytes 1 through 4.

Table 6-30: Bit structure of floating-point bytes

Byte Bits Definition

1 SEEEEEEE S=Sign

E=Exponent

100 Micro Motion 2500 Transmitters with Configurable Input/Outputs