Micro Motion Gas Density Meter Manuals & Guides

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Configuration and Use Manual

MMI-20020949, Rev AC

Micro Motion® Gas Density Meters (GDM)

Configuration and Use Manual

April 2016

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.

Emerson Flow customer service

Email:

• Worldwide: flow.support@emerson.com

• Asia-Pacific: APflow.support@emerson.com

Telephone:

North and South America Europe and Middle East Asia Pacific

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South Africa 800 991 390

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Contents

Part I Getting Started

Chapter 1 Before you begin ............................................................................................................3

1.1 About this manual ....................................................................................................................... 3

1.2 Model codes and device types ..................................................................................................... 3

1.3 Communications tools and protocols .......................................................................................... 4

1.4 Additional documentation and resources .................................................................................... 4

Chapter 2 Orientation and planning ...............................................................................................7

2.1 Terms and definitions .................................................................................................................. 7

2.2 Core process variable and available gas process variables ............................................................ 8

2.3 GDM equations ........................................................................................................................... 8

Chapter 3 Quick start ................................................................................................................... 13

3.1 Power up the transmitter ...........................................................................................................13

3.2 Check meter status ................................................................................................................... 13

3.3 Make a startup connection to the transmitter ............................................................................14

Part II Configuration and commissioning

Chapter 4 Introduction to configuration and commissioning ....................................................... 19

4.1 Default values ............................................................................................................................19

4.1.1 GDM default values .....................................................................................................19

4.2 Enable access to the off-line menu of the display ....................................................................... 20

4.3 Disable HART security ................................................................................................................21

4.4 Set the HART lock ...................................................................................................................... 23

4.5 Restore the factory configuration .............................................................................................. 23

Chapter 5 Configure process measurement ..................................................................................25

5.1 Verify the calibration factors ......................................................................................................25

5.1.1 Calibration factors ...................................................................................................... 26

5.2 Configure line density measurement ........................................................................................ 26

5.2.1 Configure Density Measurement Unit ................................................................................26

5.2.2 Configure Density Damping ........................................................................................... 28

5.2.3 Configure Density Cutoff ................................................................................................ 29

5.3 Configure temperature measurement .......................................................................................29

5.3.1 Configure Temperature Measurement Unit ........................................................................ 30

5.3.2 Configure Temperature Damping .....................................................................................30

5.3.3 Configure Temperature Input .......................................................................................... 31

5.4 Configure the pressure input ..................................................................................................... 35

5.4.1 Configure the pressure input using ProLink III ............................................................. 35

5.4.2 Configure the pressure input using the Field Communicator .......................................36

5.5 Configure energy content management ................................................................................... 37

5.5.1 Configure energy content management using ProLink III ............................................38

5.5.2 Configure energy content management using the Field Communicator .....................41

Configuration and Use Manual i

Contents

5.6 Configure base density measurement ....................................................................................... 42

5.7 Set up flow rate measurement ...................................................................................................43

5.7.1 Set up flow rate measurement using ProLink III ...........................................................43

5.7.2 Set up flow rate measurement using the Field Communicator .................................... 45

Chapter 6 Configure device options and preferences ....................................................................49

6.1 Configure the transmitter display .............................................................................................. 49

6.1.1 Configure the language used for the display ............................................................... 49

6.1.2 Configure the process variables and diagnostic variables shown on the display ...........50

6.1.3 Configure the number of decimal places (precision) shown on the display ..................50

6.1.4 Configure the refresh rate of data shown on the display ..............................................51

6.1.5 Enable or disable automatic scrolling through the display variables ............................ 51

6.2 Enable or disable the Acknowledge All Alerts display command ......................................................52

6.3 Configure security for the display menus .................................................................................. 53

6.4 Configure alert handling ............................................................................................................54

6.4.1 Configure Fault Timeout .................................................................................................54

6.4.2 Configure Alert Severity ................................................................................................. 55

6.5 Configure informational parameters ......................................................................................... 57

Chapter 7 Integrate the meter with the control system ................................................................59

7.1 Configure Channel B ..................................................................................................................59

7.2 Configure the mA output .......................................................................................................... 60

7.2.1 Configure mA Output Process Variable ............................................................................. 60

7.2.2 Configure Lower Range Value (LRV) and Upper Range Value (URV) ....................................62

7.2.3 Configure Added Damping ............................................................................................. 64

7.2.4 Configure mA Output Fault Action and mA Output Fault Level ...............................................65

7.3 Configure the discrete output ................................................................................................... 66

7.3.1 Configure Discrete Output Source ....................................................................................66

7.3.2 Configure Discrete Output Polarity ................................................................................... 67

7.3.3 Configure Discrete Output Fault Action ............................................................................. 68

7.4 Configure an enhanced event ....................................................................................................69

7.5 Configure HART/Bell 202 communications ............................................................................... 70

7.5.1 Configure basic HART parameters ...............................................................................70

7.5.2 Configure HART variables (PV, SV, TV, QV) ..................................................................71

7.5.3 Configure burst communications ............................................................................... 73

7.6 Configure Modbus communications ..........................................................................................78

7.7 Configure Digital Communications Fault Action ................................................................................. 79

7.7.1 Options for Digital Communications Fault Action .................................................................80

Chapter 8 Complete the configuration ......................................................................................... 81

8.1 Test or tune the system using sensor simulation ........................................................................81

8.2 Back up transmitter configuration ............................................................................................. 81

8.3 Enable HART security .................................................................................................................82

Part III Operations, maintenance, and troubleshooting

Chapter 9 Transmitter operation ................................................................................................. 87

9.1 Record the process variables ..................................................................................................... 87

9.2 View process variables and diagnostic variables .........................................................................87

9.2.1 View process variables using the display ..................................................................... 88

ii Micro Motion® Gas Density Meters (GDM)

Contents

9.2.2 View process variables and other data using ProLink III ............................................... 88

9.2.3 View process variables using the Field Communicator ................................................ 89

9.3 View and acknowledge status alerts .......................................................................................... 89

9.3.1 View and acknowledge alerts using the display .......................................................... 89

9.3.2 View and acknowledge alerts using ProLink III .............................................................91

9.3.3 View alerts using the Field Communicator .................................................................. 92

9.3.4 Alert data in transmitter memory ............................................................................... 92

Chapter 10 Measurement support ................................................................................................. 95

10.1 Perform the Known Density Verification procedure ................................................................... 95

10.1.1 Perform the Known Density Verification procedure using the display ......................... 96

10.1.2 Perform the Known Density Verification procedure using ProLink III ........................... 96

10.1.3 Perform the Known Density Verification procedure using the

Field Communicator ................................................................................................... 97

10.2 Adjust density measurement with Density Offset or Density Meter Factor ......................................... 97

10.3 Adjust temperature measurement with Temperature Offset or Temperature Slope ........................... 99

10.4 Perform temperature calibration .............................................................................................100

10.4.1 Perform temperature calibration using the display ................................................... 101

10.4.2 Perform temperature calibration using ProLink III ..................................................... 102

10.4.3 Perform temperature calibration using the Field Communicator .............................. 103

10.5 Configure VOS compensation ................................................................................................. 103

10.5.1 VOS User G ............................................................................................................... 104

10.6 Set up user-defined calculations .............................................................................................. 105

10.6.1 Equations used in user-defined calculations ..............................................................106

10.6.2 Measurement units used in user-defined calculations ............................................... 107

10.7 Diagnostic density ...................................................................................................................107

10.7.1 Enable diagnostic input density ................................................................................ 108

10.7.2 Enable calculated diagnostic density .........................................................................108

Chapter 11 Troubleshooting ........................................................................................................ 111

11.1 Quick guide to troubleshooting ...............................................................................................111

11.2 Check power supply wiring ......................................................................................................112

11.3 Check grounding .....................................................................................................................113

11.4 Perform loop tests ...................................................................................................................113

11.4.1 Perform loop tests using the display ......................................................................... 113

11.4.2 Perform loop tests using ProLink III ........................................................................... 115

11.4.3 Perform loop tests using the Field Communicator .................................................... 116

11.5 Status LED states ..................................................................................................................... 117

11.6 Status alerts, causes, and recommendations ........................................................................... 118

11.7 Density measurement problems ............................................................................................. 122

11.8 Temperature measurement problems .....................................................................................123

11.8.1 Thermal insulation ....................................................................................................124

11.9 Gas measurement problems ................................................................................................... 124

11.10 Concentration measurement problems ...................................................................................125

11.11 Milliamp output problems ....................................................................................................... 125

11.12 Discrete output problems ........................................................................................................127

11.13 Time Period Signal (TPS) output problems ...............................................................................127

11.14 Using sensor simulation for troubleshooting ........................................................................... 128

11.15 Trim mA outputs ..................................................................................................................... 128

11.15.1 Trim mA outputs using ProLink III ..............................................................................128

11.15.2 Trim mA outputs using the Field Communicator .......................................................129

11.16 Check HART communications ................................................................................................. 130

11.17 Check Lower Range Value and Upper Range Value ......................................................................... 131

Configuration and Use Manual iii

Contents

11.18 Check mA Output Fault Action ...................................................................................................... 132

11.19 Check for radio frequency interference (RFI) ............................................................................132

11.20 Check the cutoffs .................................................................................................................... 132

11.21 Check the drive gain ................................................................................................................ 133

11.21.1 Excessive or erratic drive gain ....................................................................................133

11.21.2 Collect drive gain data .............................................................................................. 134

11.22 Check the pickoff voltage ........................................................................................................ 134

11.22.1 Collect pickoff voltage data ...................................................................................... 135

11.23 Check for internal electrical problems ..................................................................................... 135

11.24 Locate a device using the HART 7 Squawk feature ................................................................... 135

Appendices and reference

Appendix A Calibration certificate ................................................................................................ 137

A.1 Sample calibration certificate ................................................................................................. 137

Appendix B Using the transmitter display ..................................................................................... 139

B.1 Components of the transmitter interface ................................................................................ 139

B.2 Use the optical switches .......................................................................................................... 139

B.3 Access and use the display menu system .................................................................................140

B.3.1 Enter a floating-point value using the display ............................................................141

B.4 Display codes for process variables ..........................................................................................144

B.5 Codes and abbreviations used in display menus ...................................................................... 145

Appendix C Using ProLink III with the transmitter .........................................................................157

C.1 Basic information about ProLink III ...........................................................................................157

C.2 Connect with ProLink III ........................................................................................................... 158

C.2.1 Connection types supported by ProLink III ................................................................ 158

C.2.2 Connect with ProLink III over Modbus/RS-485 ...........................................................159

C.2.3 Connect with ProLink III over HART/Bell 202 ............................................................. 162

Appendix D Using the Field Communicator with the transmitter ................................................... 171

D.1 Basic information about the Field Communicator ....................................................................171

D.2 Connect with the Field Communicator .................................................................................... 172

iv Micro Motion® Gas Density Meters (GDM)

Part I

Getting Started

Chapters covered in this part:

• Before you begin

• Orientation and planning

• Quick start

Getting Started

Configuration and Use Manual 1

Getting Started

2 Micro Motion® Gas Density Meters (GDM)

1 Before you begin

Topics covered in this chapter:

• About this manual

• Model codes and device types

• Communications tools and protocols

• Additional documentation and resources

1.1 About this manual

This manual provides information to help you configure, commission, use, maintain, and troubleshoot the Micro Motion Gas Density Meter (GDM).

Important

This manual assumes that the following conditions apply:

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

installation manual.

• The installation complies with all applicable safety requirements.

• The user is trained in all government and corporate safety standards.

Before you begin

1.2 Model codes and device types

Your device can be identified by the model code on the device tag.

Model codes and device typesTable 1-1:

Model code Device nickname I/O

GDM****C GDM mA • Two mA outputs

• RS-485 terminals

GDM****D GDM DO • One mA output

• One discrete output

• RS-485 terminals

GDM****B GDM TPS • One mA output

• One Time Period Sig-

nal output

• RS-485 terminals

GDM****E GDM Fixed • One Time Period Sig-

nal output

Electronics mounting

Integral

Configuration and Use Manual 3

Before you begin

Restriction

The GDM mA and GDM DO support a complete set of application and configuration options. The GDM TPS and GDM Fixed support a subset of application and configuration options. Refer to the product data sheet for details.

1.3 Communications tools and protocols

You can use several different communications tools and protocols to interface with the device. You may use different tools in different locations or for different tasks.

Communications tools, protocols, and related informationTable 1-2:

Communications tool Supported protocols Scope In this manual For more information

Display Not applicable Basic configuration and

commissioning

ProLink III • Modbus/RS-485

• HART/Bell 202

• Service port

Field Communicator

• HART/Bell 202 Complete configuration

Complete configuration and commissioning

and commissioning

Complete user information. See Appendix B.

Basic user information. See Appendix C.

Basic user information. See Appendix D.

Not applicable

User manual

• Installed with soft-

ware

• On Micro Motion

user documentation CD

• On Micro Motion

web site (www.micromo‐

tion.com)

User manual on Micro Motion web site (www.micromo‐

tion.com )

Tip

You may be able to use other communications tools from Emerson Process Management, 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 www.micromotion.com.

1.4 Additional documentation and resources

Micro Motion provides additional documentation to support the installation and operation of the device.

4 Micro Motion® Gas Density Meters (GDM)

Before you begin

Additional documentation and resourcesTable 1-3:

Topic Document

Device installation Micro Motion Gas Density Meters (GDM): Installation Manual

Product data sheet Micro Motion Gas Density Meters: Product Data Sheet

All documentation resources are available on the Micro Motion web site at

www.micromotion.com or on the Micro Motion user documentation DVD.

Configuration and Use Manual 5

Before you begin

6 Micro Motion® Gas Density Meters (GDM)

Orientation and planning

2 Orientation and planning

Topics covered in this chapter:

• Terms and definitions

• Core process variable and available gas process variables

• GDM equations

2.1 Terms and definitions

Terms used in meter setup and measurementTable 2-1:

Term Definition or usage

Gas

Calibration gas The gas used during factory calibration, typically nitrogen or argon.

Sample gas The gas stream to be measured by the meter.

Pressure

Line pressure The pressure in the main pipeline, independent of the meter.

Sample pressure The pressure of the sample gas.

Measurement

Base density (standard density, normal density)

Calorific value The amount of heat released during the combustion of a specified amount of a

Compressibility factor “z” The correction factor for interactive molecular behavior of non-ideal gas mix-

Concentration (gas purity) In a gas mixture, the quantity of the primary gas in comparison to the quantity

Energy flow The energy content of the process gas flowing through the pipe per unit of

Molecular weight The ratio of the mass of a gas to its volume. Typically measured in g/mol.

Net mass flow rate The flow rate as measured in mass flow units and multiplied by the current con-

Net volume flow rate The flow rate as measured in volume flow units, corrected to base temperature

Relative density The ratio of the weight of a volume of gas (or gas mixture) to the weight of an

The absolute density of a gas at reference conditions (base temperature and base pressure). Can be used to calculate standard volume flow from mass flow. Measured in user-specified units.

gas. Measured in units of energy per units of the gas. Energy = calorific value.

tures.

of the secondary gas (contaminant). Measured in user-specified units.

time. Measured in units of energy per units of time.

centration value.

and base pressure, and multiplied by the current concentration value.

equal volume of dry air, where the weights of both the gas and air are taken under identical conditions of temperature and pressure. Unitless.

Configuration and Use Manual 7

Orientation and planning

Terms used in meter setup and measurement (continued)Table 2-1:

Term Definition or usage

Specific gravity The ratio of the molecular weight of a gas (or gas mixture) to the molecular

weight of dry air. The molecular weight of dry air is normally assumed to be

28.96469. Unitless.

Wobbe index The ratio of the calorific value of a gas to its specific gravity. Measured in volu-

metric units (BTU/SCF, and MJ/SCM).

2.2 Core process variable and available gas process variables

The gas process variables that the GDM can report are determined by the core process variable that you select during calibration.

Core process variable and available process variablesTable 2-2:

Available process variables Default measurement unit

Specific gravity Unitless

Molecular weight g/mol

Relative density Unitless

Base density g/cc

Line density g/cc

Base compressibility Unitless

Calorific value MJ/Nm3

Wobbe index MJ/Nm3

Energy flow MJ/hr

Concentration (gas purity) Concentration (% mass)

Net mass flow rate g/cc

Net volume flow rate SCFM

2.3 GDM equations

Line density

All of the pressures in the following line density calculations are calculated in absolute pressure. If gauge pressure is used for the polling and polled device, a new parameter is set to convert the input pressure to absolute.

8 Micro Motion® Gas Density Meters (GDM)

Orientation and planning

Uncorrected density Equation 2-1:

Du = K0+ K1 × τ + K2 × τ

K0, K1, and K

Uncorrected density (kg/m3)

Instrument calibration factors

Instrument time period (µs). Normally the upper frequency is 3dB point, but it can also be the time period of the resonance peak.

Temperature-corrected density Equation 2-2:

Dт= Du × 1 + K18×(т –20)+ K19×(т –20

Dт

K18 and K

Note

Depending on your calibration option, you may have selectable K18 and K19 calibrations for multiple temperature ranges.

Temperature-corrected density (kg/m3)

Instrument calibration factors

Instrument temperature (°C)

)

Velocity-of -sound-corrected density Equation 2-3:

Dт

VOS

cal

VOS

meas

K3 and K4

DV= Dт × {1 +(K3 /(DT+ K4)) × (VOS

Velocity of sound-corrected density (kg/m3)

Temperature-corrected density (kg/m3)

Sound velocity of the calibration gas (m/s) / 293°K

Sound velocity of the measured gas (m/s) / temperature for the VOS of the measured gas (°K)

VOS calibration coefficients

cal

– VOS

meas

) }

Note

VOScal and VOSmeas are defined as SG / γ0 of the fluid, and are entered as the VOS. γ0 = Low pressure ratio of specific heats.

Configuration and Use Manual 9

Orientation and planning

Specific gravity

Specific gravity calculated from molecular weight Equation 2-4:

SG =

Gas

Air

Specific gravity of process gas

Molecular weight of process gas (g/mol)

Gas

Molecular weight of air (user specified; default = 28.96469 g/mol)

Air

Molecular weight

Molecular weight calculated from line density Equation 2-5:

Line

UGC

Line

Molecular weight of process gas

Density of the process gas at line conditions

Universal gas constant

Temperature of the process gas at line conditions

Compressibility of the process gas at line conditions

Line pressure

Base density

Gas

Line

× UGC × T

Line

× Z

Line

Base density from line density Equation 2-6:

Line

PB× ρ

ρB=

Base density

Base pressure

Density of the process gas at line conditions

Compressibility of the process gas at line conditions

Temperature of the process gas at line conditions

Compressibility of the process gas at base conditions

Temperature of the process gas at base conditions

Line pressure

× Z

Line

ZB× TB× P

Line

× T

Line

10 Micro Motion® Gas Density Meters (GDM)

Relative density

Orientation and planning

Relative density from base density Equation 2-7:

RD =

Air

Relative density

Base pressure

Relative density of air

Configuration and Use Manual 11

Orientation and planning

12 Micro Motion® Gas Density Meters (GDM)

3 Quick start

Topics covered in this chapter:

• Power up the transmitter

• Check meter status

• Make a startup connection to the transmitter

3.1 Power up the transmitter

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

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

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.

Quick start

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

The transmitter will automatically perform diagnostic routines. During this period, Alert 009 is active. The diagnostic routines should complete in approximately 30 seconds.

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.

3.2 Check meter status

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

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.

Configuration and Use Manual 13

Quick start

Transmitter status reported by status LEDTable 3-1:

LED state Description Recommendation

Green No alerts are active. Continue with configuration or process meas-

urement.

Yellow One or more low-severity alerts are active. A low-severity alert condition does not affect

measurement accuracy or output behavior. You can continue with configuration or process measurement. If you choose, you can identify and resolve the alert condition.

Flashing yellow Calibration in progress, or Known Density Veri-

fication in progress.

Red One or more high-severity alerts are active. A high-severity alert condition affects meas-

The measurement can fluctuate during the calibration process or change as a result of the calibration process. The alert will clear when the calibration is complete. Check the calibration results before continuing.

urement accuracy and output behavior. Resolve the alert condition before continuing.

• View and acknowledge status alerts (Section 9.3)

• Status alerts, causes, and recommendations (Section 11.6)

3.3 Make a startup connection to the transmitter

For all configuration tools except the display, you must have an active connection to the transmitter to configure the transmitter.

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 Connection type to use Instructions

ProLink III Modbus/RS-485

HART/Bell 202

Field Communicator HART/Bell 202 Appendix D

Postrequisites

(Optional) Change the communications parameters to site-specific values.

Appendix C

• To change the communications parameters using ProLink III, choose Device Tools >

Configuration > Communications.

• To change the communications parameters using the Field Communicator, choose

Configure > Manual Setup > HART > Communications.

14 Micro Motion® Gas Density Meters (GDM)

Quick start

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.

Configuration and Use Manual 15

Quick start

16 Micro Motion® Gas Density Meters (GDM)

Configuration and commissioning

Part II

Configuration and commissioning

Chapters covered in this part:

• Introduction to configuration and commissioning

• Configure process measurement

• Configure device options and preferences

• Integrate the meter with the control system

• Complete the configuration

Configuration and Use Manual 17

Configuration and commissioning

18 Micro Motion® Gas Density Meters (GDM)

Introduction to configuration and commissioning

4 Introduction to configuration and

commissioning

Topics covered in this chapter:

• Default values

• Enable access to the off‐line menu of the display

• Disable HART security

• Set the HART lock

• Restore the factory configuration

4.1 Default values

Default values for your meter are configured at the factory.

Important

Default values are based on your purchase order options. Therefore, the default values described in the following tables may not be the factory default values configured for your system. For absolute accuracy, refer to the configuration sheet that was shipped with your meter.

4.1.1 GDM default values

GDM default mA scaling valuesTable 4-1:

Variable Default 4 mA Default 20 mA

Line density 0.0 g/cc 0.400 g/cc

Line temperature -50.000°C

Drive gain 0.000 % 100.000 %

External temperature -50.000°C

External pressure 0.000 PSIg 1450.377 PSIg

Base density 0.000 g/cc 0.400 g/cc

Relative density 0.0 1.0

Molecular weight 0.0 g/mol 28.96469 g/mol

Specific gravity 0 3

Calorific value 20 MJ/Nm3 60 MJ/Nm3

Wobbe index 20 MJ/Nm3 60 MJ/Nm3

Sensor time period 400 us 1200 us

-58°F

-58.00000°F

200.000°C

392°F

200.000°C

392.0000°F

Configuration and Use Manual 19

Introduction to configuration and commissioning

GDM default mA scaling values (continued)Table 4-1:

Variable Default 4 mA Default 20 mA

User-defined calculation output

%CO

%CO 0 % 100 %

Concentration Measurement enabled

Gas purity concentration 0.000 % 100.000 %

Flow input enabled

Energy flow 40.0 MJ/hr 120.0 MJ/hr

Mass flow rate (calculated) -200 g/cc 200 g/cc

Mass flow rate (external) -200 g/cc 200 g/cc

Volume flow rate (calculated) -0.42378 SCFM 0.42378 SCFM

Volume flow rate (external) -0.20000 0.20000

0 100

0 % 100 %

GDM default variablesTable 4-2:

Default variable Output option A Output options B and C

Primary Variable (PV), mA1 Sample Temperature Density

Secondary Variable (SV), mA2

Tertiary Variable (TV) Sensor Time Period Sensor Time Period

Quaternary Variable (QV) Drive Gain Drive Gain

Sensor Time Period Sample Temperature

4.2 Enable access to the off-line menu of the display

Display Not available

ProLink III Device Tools > Configuration > Transmitter Display > Display Security

Field Communicator Configure > Manual Setup > Display > Display Menus > Offline Menu

Overview

By default, access to the off-line menu of the display is enabled. If it is disabled, you must enable it if you want to use the display to configure the transmitter.

20 Micro Motion® Gas Density Meters (GDM)

Restriction

You cannot use the display to enable access to the off-line menu. You must make a connection from another tool.

4.3 Disable HART security

If you plan to use HART protocol to configure the device, HART security must be disabled. HART security is disabled by default, so you may not need to do this.

Prerequisites

• Strap wrench

• 3 mm hex key

Procedure

1. Power down the meter.

2. Using the strap wrench, loosen the grub screws and remove the transmitter end-

cap.

Introduction to configuration and commissioning

Transmitter with end-cap removedFigure 4-1:

A. Transmitter end‐cap

3. Using the hex key, remove the safety spacer.

Configuration and Use Manual 21

Introduction to configuration and commissioning

Transmitter with end-cap and safety spacer removedFigure 4-2:

A. Transmitter end‐cap B. Safety spacer

4. Move the HART security switch to the OFF position (up).

The HART security switch is the switch on the left.

HART security switchFigure 4-3:

A. HART security switch B. Unused

22 Micro Motion® Gas Density Meters (GDM)

5. Replace the safety spacer and end-cap.

6. Power up the meter.

4.4 Set the HART lock

If you plan to use a HART connection to configure the device, you can lock out all other HART masters. If you do this, other HART masters will be able to read data from the device but will not be able to write data to the device.

Restrictions

• This feature is available only when you are using the Field Communicator or AMS.

• This feature is available only with a HART 7 host.

Procedure

1. Choose Configure > Manual Setup > Security > Lock/Unlock Device.

2. If you are locking the meter, set Lock Option as desired.

Introduction to configuration and commissioning

Option Description

Permanent Only the current HART master can make changes to the device. The device will

remain locked until manually unlocked by a HART master. The HART master can also change Lock Option to Temporary.

Temporary Only the current HART master can make changes to the device. The device will

remain locked until manually unlocked by a HART master, or a power-cycle or device reset is performed. The HART master can also change Lock Option to Perma-

nent.

Lock All No HART masters are allowed to make changes to the configuration. Before

changing Lock Option to Permanent or Temporary, the device must be unlocked. Any HART master can be used to unlock the device.

Postrequisites

To avoid future confusion or difficulties, ensure that the device is unlocked after you have completed your tasks.

4.5 Restore the factory configuration

Display Not available

ProLink III Device Tools > Configuration Transfer > Restore Factory Configuration

Field Communicator Service Tools > Maintenance > Reset/Restore > Restore Factory Configuration

Configuration and Use Manual 23

Introduction to configuration and commissioning

Overview

Restoring the factory configuration returns the transmitter to a known operational configuration. This may be useful if you experience problems during configuration.

Tip

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

24 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

5 Configure process measurement

Topics covered in this chapter:

• Verify the calibration factors

• Configure line density measurement

• Configure temperature measurement

• Configure the pressure input

• Configure energy content management

• Configure base density measurement

• Set up flow rate measurement

5.1 Verify the calibration factors

Display Not available

ProLink III Device Tools > Calibration Data

Field Communicator Configure > Manual Setup > Calibration Factors

Overview

The calibration factors are used to adjust measurement for the unique traits of the sensor. Your device was calibrated at the factory. However, you should verify that the calibration factors that are configured in your device match the factory values.

Prerequisites

You will need the factory values for the calibration factors. These are provided in two locations:

• The calibration certificate shipped with your meter

• The label inside the transmitter's end-cap

Important

If the transmitter is not the original component, do not use the values from the transmitter label.

Procedure

1. View the calibration factors that are stored in the device.

2. Compare them to the factory values.

• If the values match, no action is required.

• If the values do not match, contact Micro Motion customer service.

Configuration and Use Manual 25

Configure process measurement

Related information

Sample calibration certificate

5.1.1 Calibration factors

The original calibration factors are obtained from factory calibration, and are unique to each device. They are used to adjust measurements for the specific physical properties of the device.

The calibration certificate contains several sets of factors:

Density calibration coefficients

Temperature compensation coefficients

Velocity of sound coefficients

The calibration certificate also provides the results of the Known Density Verification procedure that was performed at the factory.

For each calibration performed at the factory, the calibration certificate contains the data used to calculate the calibration coefficients.

Related information

Sample calibration certificate

Define the relationship between density and the response of your sensor

Adjust density measurement for the effect of temperature on sensor response

Adjust density measurement for the effect of sound waves (pressure) on sensor response

5.2 Configure line density measurement

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

• Configure Density Measurement Unit (Section 5.2.1)

• Configure Density Damping (Section 5.2.2)

• Configure Density Cutoff (Section 5.2.3)

5.2.1 Configure Density Measurement Unit

Display OFF-LINE MAINT > OFF-LINE CONFG > UNITS > DENS

ProLink III Device Tools > Configuration > Process Measurement > Line Density > Density Unit

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

Overview

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

26 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

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).

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.

Options for Density Measurement UnitTable 5-1:

Label

Unit description

Grams per cubic centimeter G/CM3 g/cm3 g/Cucm

Grams per liter G/L g/l g/L

Grams per milliliter G/mL g/ml g/mL

Kilograms per liter KG/L kg/l kg/L

Kilograms per cubic meter KG/M3 kg/m3 kg/Cum

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

Pounds per cubic foot LB/CUF lbs/ft3 lb/Cuft

Pounds per cubic inch LB/CUI lbs/in3 lb/CuIn

Short ton per cubic yard ST/CUY sT/yd3 STon/Cuyd

Degrees API D API degAPI degAPI

Special unit SPECL special Spcl

Display (standard) ProLink III Field Communicator

Define a special measurement unit for density

Display Not available

ProLink III Device Tools > Configuration > Process Measurement > Line Density > Special Units

Field Communicator Configure > Manual Setup > Measurements > Special Units

Overview

A special measurement unit is a user-defined unit of measure that allows you to report process 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 Density Special Unit Base.

Configuration and Use Manual 27

Configure process measurement

2. Calculate Density Special Unit Conversion Factor as follows:

3. Enter Density Special Unit Conversion Factor.

4. Set User-Defined Label to the name you want to use for the density 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 density

You want to measure density in ounces per cubic inch.

1. Set Density Special Unit Base to g/cm3.

2. Calculate Density Special Unit Conversion Factor:

3. Set Density Special Unit Conversion Factor to 1.73.

4. Set User-Defined Label to oz/in3.

Density Special Unit Base is the existing density unit that the special unit will be based on.

a. x base units = y special units

b. Density Special Unit Conversion Factor = x÷y

The original density value is divided by this conversion factor.

a. 1 g/cm3 = 0.578 oz/in3

b. 1÷0.578 = 1.73

5.2.2 Configure Density Damping

Display Not available

ProLink III Device Tools > Configuration > Process Measurement > Line Density > Density Damping

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

Overview

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.

Tip

Density damping affects all process variables that are calculated from line density.

28 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

Procedure

Set Density Damping to the value you want to use.

The default value is 1.6 seconds. The range is 0 to 60 seconds.

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.

Related information

Interaction between mA Output Damping and process variable damping

5.2.3 Configure Density Cutoff

Display Not available

ProLink III Device Tools > Configuration > Process Measurement > Line Density > Density Cutoff High

Field Communicator Configure > Manual Setup > Measurements > Density > High Density Cutoff

Overview

Density Cutoff High specifies the highest density value that will be reported as measured. If line density exceeds this value, the configured value of Density Cutoff High is reported.

Procedure

Set Density Cutoff High to the value you want to use.

The default value is 0.44 g/cm³. The range is 0.0 g/cm³ to 1.0 g/cm³.

5.3 Configure temperature measurement

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

• Configure Temperature Measurement Unit (Section 5.3.1)

Configuration and Use Manual 29

Configure process measurement

• Configure Temperature Damping (Section 5.3.2)

• Configure Temperature Input (Section 5.3.3)

5.3.1 Configure Temperature Measurement Unit

Display OFF-LINE MAINT > OFF-LINE CONFG > UNITS > TEMP

ProLink III Device Tools > Configuration > Process Measurement > Line Temperature > Temperature Unit

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

Overview

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.

Options for Temperature Measurement UnitTable 5-2:

Unit description

Degrees Celsius °C °C degC

Degrees Fahrenheit °F °F degF

Degrees Rankine °R °R degR

Kelvin °K °K Kelvin

Display ProLink III

5.3.2 Configure Temperature Damping

Display Not available

ProLink III Device Tools > Configuration > Process Measurement > Line Temperature > Temperature Damping

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

Label

Field Communicator

30 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

Overview

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).

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.

• Default: 4.8 seconds

Tips

• 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.

• 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 down to the nearest valid value.

5.3.3 Configure Temperature Input

Temperature data from the on-board temperature sensor (RTD) is always available. Optionally, you can set up an external temperature device and use external temperature data.

Tips

• Use an external device only if it is more accurate than the internal RTD.

• A fixed temperature value is not recommended. Gas measurement is very sensitive to

temperature, and a fixed temperature value may produce inaccurate process data.

Important

Line temperature data is used in several different measurements and calculations. It is possible to use the internal RTD temperature in some areas and an external temperature in others. The transmitter stores the internal RTD temperature and the external temperature separately. However, the transmitter stores only one alternate temperature value, which may be either an external

Configuration and Use Manual 31

Configure process measurement

temperature or the configured fixed value. Accordingly, if you set up polling for temperature in one area, and digital communications in another, and configure a fixed temperature value in a third, the fixed value will be overwritten by polling and digital communications, and polling and digital communications will overwrite each other.

Prerequisites

If you plan to poll an external device:

• The primary mA output must be wired to support HART communications.

• Ensure that the meter has the required polling slots available. The meter provides

• Configure Temperature Input using ProLink III

• Configure Temperature Input using the Field Communicator

Configure Temperature Input using ProLink III

four polling slots, and they may be already in use. You may need to use a fixed value or digital communications for some external values. To check the current polling configuration, choose Device Tools > Configuration > Polled Variables.

ProLink III Device Tools > Configuration > Process Measurement > Line Temperature > Line Temperature Source

Procedure

1. 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 de-

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

vice for temperature data. 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

Poll as Secondary Other HART masters will be on the net-

network. The Field Communicator is not a HART master.

work. The Field Communicator is not a HART master.

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

device.

e. Click Apply.

32 Micro Motion® Gas Density Meters (GDM)

Option Description Setup

Digital communications

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 Fixed Value or Digital Communica-

tions. b. Click Apply. c. Perform the necessary host programming and communica-

tions setup to write temperature data to the meter at appro-

priate intervals.

2. If you set up an external temperature:

a. Choose Device Tools > Configuration > I/O > Inputs > External Inputs.

b. In the Line Temperature Input group, check or uncheck the checkboxes as

desired.

If a checkbox is checked, the internal temperature is used for that measurement or calculation. If a checkbox is unchecked, the external temperature is used.

Postrequisites

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

Configure process measurement

Need help? If the value is not correct:

• For polling:

- Verify the wiring between the meter and the external device.

- Verify the HART tag of the external device.

• 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.

Configure Temperature Input using the Field Communicator

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

Method Description Setup

Internal RTD temperature data

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

a. Choose Configure > Manual Setup > Measurements > Base Density >

Temperature.

b. Set External Temperature for Gas to Disable.

Configuration and Use Manual 33

Configure process measurement

Method Description Setup

Polling The meter polls an external de-

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

Digital communications

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. Choose Configure > Manual Setup > Measurements > Base Density >

b. Set External Temperature for Gas to Enable. c. Choose Configure > Manual Setup > Inputs/Outputs > External Device

d. Choose an unused polling slot. e. Set Poll Control to Poll as Primary or Poll as Secondary.

Option Description

Poll as Primary No other HART masters will be on the

Poll as Secondary Other HART masters will be on the net-

f. Set External Device Tag to the HART tag of the external tem-

g. Set Polled Variable to Temperature.

a. Perform the necessary host programming and communica-

Temperature.

Polling.

network. The Field Communicator is not a HART master.

work. The Field Communicator is not a HART master.

perature device.

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

Postrequisites

Choose Service Tools > Variables > External Variables and verify the value for External Temperature.

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.

• 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.

• If necessary, apply an offset.

34 Micro Motion® Gas Density Meters (GDM)

5.4 Configure the pressure input

Pressure data is required to calculate base density from line density. The meter does not measure pressure, so you must provide an external pressure input. You must use absolute pressure.

Pressure data is required for several different measurements. There are several different methods to obtain pressure data.

Tip

A fixed value for temperature is 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 must be wired to support HART communications.

• Ensure that the meter has the required polling slots available. The meter provides

Configure process measurement

• Configure the pressure input using ProLink III (Section 5.4.1)

• Configure the pressure input using the Field Communicator (Section 5.4.2)

5.4.1 Configure the pressure input using ProLink III

1. Choose Device Tools > Configuration > Process Measurement > Line Pressure.

2. Set Pressure Type to match the pressure measurement from the external pressure device.

Option Description

Absolute The external pressure device reports absolute pressure.

Gauge The external pressure device reports gauge pressure.

Restriction

If Line Pressure Source is set to Fixed, you cannot configure Pressure Type. You must enter the pressure value in the required form. To set Pressure Type, you may need to change the setting of Line Pressure Source.

The meter requires absolute pressure. If you select Gauge, the device will convert the input pressure value to the equivalent absolute pressure.

3. Set Pressure Unit to the unit used by the external pressure device.

4. Choose the method used to supply pressure data and perform the required setup.

Configuration and Use Manual 35

Configure process measurement

Option Description Setup

Polling The meter polls an external de-

vice for pressure data.

Digital communications

A host writes pressure data to the meter at appropriate intervals.

a. Set Pressure 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

Poll as Secondary Other HART masters will be on the net-

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

a. Set Pressure Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

network. The Field Communicator is not a HART master.

work. The Field Communicator is not a HART master.

device.

tions setup to write pressure data to the meter at appropriate intervals.

Postrequisites

The current pressure value is displayed in the External Pressure field. Verify that the value is correct.

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.

• 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.

• If necessary, apply an offset.

Note

Do not use the offset in conjunction with the fixed pressure value. Enter the adjusted value.

5.4.2 Configure the pressure input using the Field Communicator

Pressure data is required for several different measurements. There are several different methods to obtain pressure data.

36 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

Tip

A fixed pressure value is not recommended. Gas measurement is very sensitive to pressure, and a fixed pressure value may produce inaccurate process data.

Prerequisites

You must be able to supply pressure data to the meter. The meter does not measure pressure.

You must be using absolute pressure.

If you plan to poll an external device for pressure:

• The primary mA output must be wired to support HART communications.

• Ensure that the meter has the required polling slots available. The meter provides

four polling slots, and they may be already in use. You may need to use a fixed value for some external values.

Procedure

1. Choose Configure > Manual Setup > Inputs/Outputs > External Device Polling.

2. Choose an unused polling slot.

3. Set Poll Control to Poll as Primary or Poll as Secondary.

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

5. Set Polled Variable to Pressure.

6. Choose Configure > Manual Setup > Measurements > Base Density > Pressure.

7. Set Pressure Unit to the unit used by the external pressure device.

8. Set Pressure Input to Enable.

9. Set Pressure Offset to the value required to adjust the pressure data for this meter.

5.5 Configure energy content management

The energy content parameters are used to measure and calculate calorific value, Wobbe index, and energy flow.

Prerequisites

You must be able to supply gas composition data to the meter, for the following constituents:

• Carbon monoxide (CO)

• Carbon dioxide (CO2)

• Nitrogen (N2)

• Hydrogen (H2)

Gas composition must be measured in % by volume.

Configuration and Use Manual 37

Configure process measurement

If you plan to measure energy flow, you must be able to supply flow data to the meter. You have the following options:

• If you are using an external volume flow device, Volume Flow (External) and Mass

• If you are using an external mass flow device, Mass Flow (External) and Volume Flow

Tip

In either case, you can measure energy flow in either mass units or volume units. The meter automatically selects the appropriate process variable.

If you plan to poll an external device, ensure that the meter has the required polling slots available. The meter provides four polling slots and they may be already in use. You may need to use a fixed value or digital communications for some external values. To check the current polling configuration use one of the following paths. If you are already polling for one of these, you can use the existing polled data.

ProLink III Device Tools > Configuration > Polled Variables

Field Communicator Configure > Manual Setup > Inputs/Outputs > External Device Polling

Flow (Calculated) are available.

(Calculated) are available.

• Configure energy content management using ProLink III (Section 5.5.1)

• Configure energy content management using the Field Communicator (Section 5.5.2)

5.5.1 Configure energy content management using ProLink III

1. Choose Device Tools > Configuration > Process Measurement > Calorific Value/BTU/Wobbe

Index/Energy Flow.

2. Set Calorific Value Units to the unit to be used to measure energy content.

3. Set % CO Source to the method you will use to supply % CO data, and perform the

required setup.

Option Description Setup

Polling The meter polls an external de-

vice for % CO data.

Digital communications

Fixed value The configured fixed value is

A host writes % CO data to the meter at appropriate intervals.

used.

a. Set % CO 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. d. Set External Device Tag to the HART tag of the % CO measure-

ment device.

a. Set % CO Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

tions setup to write % CO data to the meter at appropriate intervals.

a. Set % CO Source to Fixed Value or Digital Communications. b. Set % CO (Fixed) to the desired value, in % by volume.

38 Micro Motion® Gas Density Meters (GDM)

4. Set % CO2 Source to the method you will use to supply % CO2 data, and perform the

required setup.

Option Description Setup

Polling The meter polls an external de-

vice for % CO2 data.

Digital communications

Fixed value The configured fixed value is

A host writes % CO2 data to the meter at appropriate intervals.

used.

a. Set % CO2 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. d. Set External Device Tag to the HART tag of the % CO2 measure-

ment device.

a. Set % CO2 Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

tions setup to write % CO2 data to the meter at appropriate intervals.

a. Set % CO2 Source to Fixed Value or Digital Communications. b. Set % CO2 (Fixed) to the desired value, in % by volume.

5. Set % N2 Source to the method you will use to supply % N2 data, and perform the

required setup.

Configure process measurement

Option Description Setup

Polling The meter polls an external de-

vice for % N2 data.

Digital communications

Fixed value The configured fixed value is

A host writes % N2 data to the meter at appropriate intervals.

used.

a. Set % N2 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. d. Set External Device Tag to the HART tag of the % N2 measure-

ment device.

a. Set % N2 Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

tions setup to write % N2 data to the meter at appropriate intervals.

a. Set % N2 Source to Fixed Value or Digital Communications. b. Set % N2 (Fixed) to the desired value, in % by volume.

6. Set % H2 Source to the method you will use to supply % H2 data, and perform the

required setup.

Option Description Setup

Polling The meter polls an external de-

vice for % H2 data.

Digital communications

A host writes % H2 data to the meter at appropriate intervals.

a. Set % H2 Source to Poll for External Value. b. Set Polling Slot to an available slot. a. Set Polling Control to Poll as Primary or Poll as Secondary. b. Set External Device Tag to the HART tag of the % H2 measure-

ment device.

a. Set % H2 Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

tions setup to write % H2 data to the meter at appropriate intervals.

Configuration and Use Manual 39

Configure process measurement

Option Description Setup

Fixed value The configured fixed value is

used.

a. Set % H2 Source to Fixed Value or Digital Communications. b. Set % H2 (Fixed) to the desired value, in % by volume.

7. (Optional) To configure Volume Flow (External) and Mass Flow (Calculated):

a. Set Energy Flow Units to the unit to be used to measure energy flow.

b. Set Mass Flow (Calculated) to Enabled.

c. Set Standard Volume Flow Rate Units to the units used by the external volume

measurement device

d. set Volume Flow Source to the method you will use to supply volume flow data, and

perform the required setup.

Option Description Setup

Polling The meter polls an external de-

vice for volume flow data and calculates the equivalent mass flow.

Digital communications

Fixed value The configured fixed value is

A host writes volume flow data to the meter at appropriate intervals, and the meter calculates the equivalent mass flow.

used for volume flow, and the meter calculates the equivalent mass flow.

a. Set Volume Flow 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. d. Set External Device Tag to the HART tag of the volume flow

a. Set Volume Flow Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

a. Set Volume Flow Source to Fixed Value or Digital Communications. b. Set Volume Flow (Fixed) to the desired value.

measurement device.

tions setup to write volume flow data to the meter at appropriate intervals.

8. (Optional) To configure Mass Flow (External) and Volume Flow (Calculated):

a. Set Energy Flow Units to the unit to be used to measure energy flow.

b. Set Standard Volume Flow (Calculated) to Enabled.

c. Set Mass Flow Rate Units to the units used by the external mass measurement

device.

d. Set Mass Flow Source to the method you will use to supply mass flow data, and

perform the required setup.

Option Description Setup

Polling The meter polls an external de-

vice for mass flow data and calculates the equivalent volume flow.

a. Set Mass Flow 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. d. Set External Device Tag to the HART tag of the mass flow

measurement device.

40 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

Option Description Setup

Digital communications

Fixed value The configured fixed value is

A host writes mass flow data to the meter at appropriate intervals, and the meter calculates the equivalent volume flow.

used for mass flow, and the meter calculates the equivalent volume flow.

a. Set Mass Flow Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

tions setup to write mass flow data to the meter at appropriate intervals.

a. Set Mass Flow Source to Fixed Value or Digital Communications. b. Set Mass Flow (Fixed) to the desired value.

5.5.2 Configure energy content management using the Field Communicator

1. Set the measurement units.

a. Choose Configure > Manual Setup > Measurements > Energy.

b. Set Calorific Value Unit to the unit to be used to measure calorific value.

c. (Optional) Set Energy Flow Unit to the unit to be used to measure energy flow.

2. If you want to use fixed values for Percent CO, Percent CO2, Percent N2, and/or Percent

H2:

a. Choose Configure > Manual Setup > Measurements > Optional Setup > Energy Content

Measurement > Gas Composition.

b. Enter the fixed values, in % by volume.

3. If you want to poll for Percent CO, Percent CO2, Percent N2, and/or Percent H2:

a. Choose Configure > Manual Setup > Inputs/Outputs > External Device Polling and click

External Device Polling.

b. Choose an unused polling slot.

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

d. Set External Device Tag to the HART tag of the external measurement device.

e. Set Polled Variable to the appropriate variable.

4. (Optional) To configure Volume Flow (External) and Mass Flow (Calculated):

a. Choose Configure > Manual Setup > Inputs/Outputs > External Device Polling.

b. Choose an unused polling slot.

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

d. Set External Device Tag to the HART tag of the external measurement device.

e. Set Polled Variable to Volume from Mag/Vortex Meter.

f. Choose Configure > Manual Setup > Measurements > Optional Setup > External Inputs >

Configure External Inputs > Volume.

g. Set Volume Flow Source to Enable.

h. Choose Configure > Manual Setup > Measurements > Volume.

Configuration and Use Manual 41

Configure process measurement

5. (Optional) To configure Mass Flow (External) and Volume Flow (Calculated):

i. Set Volume Flow Rate Unit to the unit used by the external device.

j. Choose Configure > Manual Setup > Measurements > Mass.

k. Set Mass Flow Rate Unit to the unit to be used for Mass Flow (Calculated).

a. Choose Configure > Manual Setup > Inputs/Outputs > External Device Polling.

b. Choose an unused polling slot.

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

d. Set External Device Tag to the HART tag of the external measurement device.

e. Set Polled Variable to Mass Flow from Coriolis Meter.

f. Choose Configure > Manual Setup > Measurements > Optional Setup > External Inputs >

Configure External Inputs > Mass.

g. Set Mass Flow Source to Enable.

h. Choose Configure > Manual Setup > Measurements > Mass.

i. Set Mass Flow Rate Unit to the unit used by the external device.

j. Choose Configure > Manual Setup > Measurements > Gas Standard Volume.

k. Set GSV Flow Unit to the unit to be used for Volume Flow (Calculated).

5.6 Configure base density measurement

Display Not available

ProLink III Device Tools > Configuration > Process Measurement > Base Density

Field Communicator Configure > Manual Setup > Measurements > Base Density > Calculation Constants

Overview

The base density parameters allow the meter to correct line density data to base density, using site-specific reference values for temperature, pressure, and compressibility.

Prerequisites

You must be able to supply a value for line compressibility. In typical installations, a gas chromatograph is used to determine an average value. Alternatively, you can use digital communications to write a value to the meter at appropriate intervals.

Procedure

1. Set Base Temperature to the temperature to which line density will be corrected.

2. Set Base Pressure to the pressure to which line density will be corrected.

3. Set Line Compressibility to the compressibility of your process gas at line conditions.

4. Set Base Compressibility to the compressibility of your process gas at reference

conditions (base temperature and base pressure).

42 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

5. Set Base Density of Air to the density of air at reference conditions.

The default value is 0.000122305 g/cm³.

6. Set Molecular Weight of Air to the appropriate value.

The default value is 28.96469 g/mol. This value is appropriate for most applications.

5.7 Set up flow rate measurement

The meter does not measure flow rate directly. However, you can provide volume flow rate data to the meter and use this data to calculate mass flow rate, or you can provide mass flow rate data and use this to calculate standard volume flow rate.

5.7.1 Set up flow rate measurement using ProLink III

Prerequisites

• To calculate mass flow rate, you must be able to supply volume flow rate data to the

meter.

• To calculate standard volume flow rate, you must be able to supply mass flow rate

data to the meter.

• If you plan to poll an external device, the primary mA output must be wired to

support HART communications.

Procedure

1. Choose Device Tools > Configuration > I/O > Inputs > External Inputs.

2. To set up mass flow rate calculation:

a. Set Mass Flow (Calculated) to Enabled and click Apply.

b. Set Mass Flow Rate (Calculated) Unit to the unit in which the mass flow rate will be

reported.

c. Set Line Volume Flow Rate Unit to the units used by the external volume

measurement device

d. Set Line Volume Flow Source to the method to be used to retrieve volume flow data

and perform the required setup.

Option Description Setup

Polling The meter polls an external de-

vice for volume flow data and calculates the equivalent mass flow rate.

a. Set Line Volume Flow 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. d. Set External Device Tag to the HART tag of the volume flow

measurement device.

Configuration and Use Manual 43

Configure process measurement

Option Description Setup

Digital communications

A host writes volume flow data to the meter at appropriate intervals, and the meter calculates the equivalent mass flow rate.

Tip

A fixed value is not recommended. A fixed value may produce inaccurate process data.

a. Set Line Volume Flow Source to Fixed Value or Digital Communica-

b. Perform the necessary host programming and communica-

The following process variables are now available:

• Line Volume Flow Rate

• Mass Flow Rate (Calculated)

3. To set up standard volume flow rate calculation:

a. Set Standard Volume Flow (Calculated) to Enabled and click Apply.

b. Set Standard Volume Flow Rate Unit to the unit in which the volume flow rate will be

reported.

c. Set Mass Flow Rate Unit to the units used by the external mass measurement

device

d. Set Mass Flow Source to the method to be used to retrieve mass flow data and

perform the required setup.

tions.

tions setup to write volume flow data to the meter at appropriate intervals.

Option Description Setup

Polling The meter polls an external de-

vice for mass flow data and calculates the equivalent standard volume flow rate.

Digital communications

A host writes mass flow data to the meter at appropriate intervals, and the meter calculates the equivalent standard volume flow rate.

Tip

A fixed value is not recommended. A fixed value may produce inaccurate process data.

measurement device.

a. Set Mass Flow Source to Fixed Value or Digital Communications. b. Perform the necessary host programming and communica-

tions setup to write mass flow data to the meter at appropriate intervals.

The following process variables are now available:

• Mass Flow Rate

• Standard Volume Flow Rate (Calculated)

44 Micro Motion® Gas Density Meters (GDM)

Configure process measurement

Postrequisites

To verify an input value, view the value displayed on the ProLink III main window, in the Inputs group.

To verify a calculated value, set up one of the ProLink III gauges to display it.

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.

• 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.

• If necessary, apply an offset.

5.7.2 Set up flow rate measurement using the Field Communicator

Prerequisites

• To calculate mass flow rate, you must be able to supply volume flow rate data to the

meter.

• To calculate standard volume flow rate, you must be able to supply mass flow rate

data to the meter.

• If you plan to poll an external device, the primary mA output must be wired to

support HART communications.

Procedure

1. To set up mass flow rate calculation:

a. Choose Configure > Manual Setup > Measurements > Mass and set Mass Flow Rate Unit to

the unit in which the mass flow rate will be reported.

b. Choose Configure > Manual Setup > Measurements > Volume and set Volume Flow Rate

Unit to the unit used by the external volume measurement device.

c. Choose Configure > Manual Setup > Measurements > External Inputs > Volumeand set

Volume Flow Source to Enabled.

d. Choose the method to be used to supply volume flow rate data, and perform the

required setup.

Configuration and Use Manual 45

Configure process measurement

Method Description Setup

Polling The meter polls an external de-

vice for volume flow rate data.

Digital communications

A host writes volume flow rate data to the meter at appropriate intervals.

a. Choose Configure > Manual Setup > Inputs/Outputs > External Device

b. Choose an unused polling slot. c. Set Poll Control to Poll as Primary or Poll as Secondary.

Option Description

Poll as Primary No other HART masters will be on the

Poll as Secondary Other HART masters will be on the net-

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

e. Set Polled Variable to Volume from Mag/Vortex Meter.

a. Perform the necessary host programming and communica-

Polling.

network. The Field Communicator is not a HART master.

work. The Field Communicator is not a HART master.

device.

tions setup to write volume flow rate data to the transmitter at appropriate intervals.

Tip

A fixed value is not recommended. A fixed value may produce inaccurate process data.

The following process variables are now available:

• Line Volume Flow Rate

• Mass Flow Rate (Calculated)

2. To set up standard volume flow calculation:

a. Choose Configure > Manual Setup > Measurements > Volume and set Volume Flow Rate

Unit to the unit in which the volume flow rate will be reported.

b. Choose Configure > Manual Setup > Measurements > Mass and set Mass Flow Rate Unit to

the unit used by the external mass measurement device.

c. Choose Configure > Manual Setup > Measurements > External Inputs > Massand set

Volume Flow Source to Enabled.

d. Choose the method to be used to supply mass flow rate data, and perform the

required setup.

46 Micro Motion® Gas Density Meters (GDM)

Method Description Setup

Polling The meter polls an external de-

vice for mass flow rate data.

Digital communications

A host writes mass flow rate data to the meter at appropriate intervals.

a. Choose Configure > Manual Setup > Inputs/Outputs > External Device

Polling. b. Choose an unused polling slot. c. Set Poll Control to Poll as Primary or Poll as Secondary.

Option Description

Poll as Primary No other HART masters will be on the

Poll as Secondary Other HART masters will be on the net-

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

device. e. Set Polled Variable to Mass Flow from Coriolis Meter.

a. Perform the necessary host programming and communica-

tions setup to write mass flow rate data to the transmitter at

appropriate intervals.

Configure process measurement

network. The Field Communicator is not a HART master.

work. The Field Communicator is not a HART master.

Tip

A fixed value is not recommended. A fixed value may produce inaccurate process data.

The following process variables are now available:

• Mass Flow Rate

• Standard Volume Flow Rate (Calculated)

Postrequisites

Choose Service Tools > Variables > External Variables and verify the values.

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.

• 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.

• If necessary, apply an offset.

Configuration and Use Manual 47

Configure process measurement

48 Micro Motion® Gas Density Meters (GDM)

Configure device options and preferences

6 Configure device options and

preferences

Topics covered in this chapter:

• Configure the transmitter display

• Enable or disable the Acknowledge All Alerts display command

• Configure security for the display menus

• Configure alert handling

• Configure informational parameters

6.1 Configure the transmitter display

You can control the process variables shown on the display and a variety of display behaviors.

• Configure the language used for the display (Section 6.1.1)

• Configure the process variables and diagnostic variables shown on the display

(Section 6.1.2)

• Configure the number of decimal places (precision) shown on the display

(Section 6.1.3)

• Configure the refresh rate of data shown on the display (Section 6.1.4)

• Enable or disable automatic scrolling through the display variables (Section 6.1.5)

6.1.1 Configure the language used for the display

Display OFF-LINE MAINT > OFF-LINE CONFG > DISPLAY > LANG

ProLink III Device Tools > Configuration > Transmitter Display > General

Field Communicator Configure > Manual Setup > Display > Language

Overview

Display Language controls the language used for process data and menus on the display.

Procedure

Select the language you want to use.

The languages available depend on your transmitter model and version.

Configuration and Use Manual 49

Configure device options and preferences

6.1.2 Configure the process variables and diagnostic variables shown on the display

Display Not available

ProLink III Device Tools > Configuration > Transmitter Display > Display Variables

Field Communicator Configure > Manual Setup > Display > Display Variables

Overview

You can control the process variables and diagnostic variables shown on the display, and the order in which they appear. The display can scroll through up to 15 variables in any order you choose. In addition, you can repeat variables or leave slots unassigned.

Restriction

You cannot set Display Variable 1 to None or to a diagnostic variable. Display Variable 1 must be set to a process variable.

Procedure

For each display variable you want to change, assign the process variable you want to use.

6.1.3 Configure the number of decimal places (precision) shown on the display

Display Not available

ProLink III Device Tools > Configuration > Transmitter Display > Display Variables

Field Communicator Configure > Manual Setup > Display > Decimal Places

Overview

You can specify the number of decimal places (precision) that are shown on the display for each process variable or diagnostic variable. You can set the precision independently for each variable.

The display precision does not affect the actual value of the variable or the value used in calculations.

Procedure

1. Select a variable.

2. Set Number of Decimal Places to the number of decimal places you want shown when

the process variable or diagnostic variable appears on the display.

For temperature and density process variables, the default value is 2 decimal places. For all other variables, the default value is 4 decimal places. The range is 0 to 5.

50 Micro Motion® Gas Density Meters (GDM)

Configure device options and preferences

Tip

The lower the precision, the greater the change must be for it to be reflected on the display. Do not set the precision too low or too high to be useful.

6.1.4 Configure the refresh rate of data shown on the display

Display OFF-LINE MAINT > OFF-LINE CONFG > DISPLAY > RATE

ProLink III Device Tools > Configuration > Transmitter Display > Display Variables

Field Communicator Configure > Manual Setup > Display > Display Behavior > Refresh Rate

Overview

You can set Refresh Rate to control how frequently data is refreshed on the display.

Procedure

Set Refresh Rate to the desired value.

The default value is 1000 milliseconds. The range is 100 milliseconds to 10,000 milliseconds (10 seconds).

6.1.5 Enable or disable automatic scrolling through the display variables

Display OFF-LINE MAINT > OFF-LINE CONFG > DISPLAY > AUTO SCRLL

ProLink III Device Tools > Configuration > Transmitter Display > General

Field Communicator Configure > Manual Setup > Display > Display Behavior > Auto Scroll

Overview

You can configure the display to automatically scroll through the configured display variables or to show a single display variable until the operator activates Scroll. When you set automatic scrolling, you can also configure the length of time each display variable is displayed.

Procedure

1. Enable or disable Auto Scroll as desired.

Option Description

Enabled The display automatically scrolls through each display variable as specified

by Scroll Rate. The operator can move to the next display variable at any time using Scroll.

Configuration and Use Manual 51

Configure device options and preferences

Option Description

Disabled (default)

The display shows Display Variable 1 and does not scroll automatically. The operator can move to the next display variable at any time using Scroll.

2. If you enabled Auto Scroll, set Scroll Rate as desired.

The default value is 10 seconds.

Tip

Scroll Rate may not be available until you apply Auto Scroll.

6.2 Enable or disable the Acknowledge All Alerts display command

Display OFF-LINE MAINT > OFF-LINE CONFG > DISPLAY > ACK

ProLink III Device Tools > Configuration > Transmitter Display > Ack All

Field Communicator Configure > Manual Setup > Display > Display Menus > Acknowledge All

Overview

You can configure whether or not the operator can use a single command to acknowledge all alerts from the display.

Procedure

1. Ensure that the alert menu is accessible from the display.

To acknowledge alerts from the display, operators must have access to the alert menu.

2. Enable or disable Acknowledge All Alerts as desired.

Option Description

Enabled (default) Operators can use a single display command to acknowledge all alerts at

once.

Disabled Operators cannot acknowledge all alerts at once. Each alert must be ac-

knowledged separately.

52 Micro Motion® Gas Density Meters (GDM)

Configure device options and preferences

6.3 Configure security for the display menus

Display OFF-LINE MAINT > OFF-LINE CONFG > DISPLAY

ProLink III Device Tools > Configuration > Transmitter Display > Display Security

Field Communicator Configure > Manual Setup > Display > Display Menus

Overview

You can control operator access to different sections of the display off-line menu. You can also configure a passcode to control access.

Procedure

1. To control operator access to the maintenance section of the off-line menu, enable

or disable Off-Line Menu.

Option Description

Enabled (default) Operator can access the maintenance section of the off-line menu. This

access is required for configuration and calibration, including Known Density Verification.

Disabled Operator cannot access the maintenance section of the off-line menu.

2. To control operator access to the alert menu, enable or disable Alert Menu.

Option Description

Enabled (default) Operator can access the alert menu. This access is required to view and

acknowledge alerts, but is not required for Known Density Verification, configuration, or calibration.

Disabled Operator cannot access the alert menu.

Note

The transmitter status LED changes color to indicate that there are active alerts, but does not show specific alerts.

3. To require a passcode for access to the off-line menu, enable or disable Off-Line

Password.

Option Description

Enabled Operator is prompted for the off-line passcode at entry to the off-line

menu.

Disabled (default) No passcode is required for entry to the off-line menu.

4. Set Off-Line Password to the desired value.

Configuration and Use Manual 53

Configure device options and preferences

The default value is 1234. The range is 0000 to 9999.

Tip

Record your passcode for future reference.

6.4 Configure alert handling

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

• Configure Fault Timeout (Section 6.4.1)

• Configure Alert Severity (Section 6.4.2)

6.4.1 Configure Fault Timeout

Display Not available

ProLink III Device Tools > Configuration > Fault Processing

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

Overview

Fault Timeout controls the delay before fault actions are performed.

Restriction

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

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.

54 Micro Motion® Gas Density Meters (GDM)

6.4.2 Configure Alert Severity

Display Not available

ProLink III Device Tools > Configuration > Alert Severity

Field Communicator Configure > Alert Setup > Alert Severity > Change Alert Severity

Overview

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

Restrictions

• For some alerts, Alert Severity is not configurable.

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

Tip

Micro Motion recommends using the default settings for Alert Severity unless you have a specific requirement to change them.

Configure device options and preferences

Procedure

1. Select a status alert.

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

Option Description

Fault Actions when fault is detected:

• 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 se-

verity).

Actions when alert clears:

• Outputs return to normal behavior.

• Digital communications return to normal behavior.

• The status LED returns to green.

Informational

Ignore No action

Actions when fault is detected:

• The alert is posted to the Alert List.

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

verity).

Actions when alert clears:

• The status LED returns to green.

Configuration and Use Manual 55

Configure device options and preferences

Status alerts and options for Status Alert Severity

Status alerts and Status Alert SeverityTable 6-1:

Alert number Alert title Default severity

A001 EEPROM Error Fault No

A002 RAM Error Fault No

A003 No Sensor Response Fault Yes

A004 Temperature Overrange Fault No

A006 Characterization Required Fault Yes

A008 Density Overrange Fault Yes

A009 Transmitter Initializing/Warming Up Ignore Yes

A010 Calibration Failure Fault No

A014 Transmitter Failure Fault No

A016 Sensor Temperature (RTD) Failure Fault Yes

A020 Calibration Factors Missing Fault Yes

A021 Transmitter/Sensor/Software Mis-

A029 Internal Electronics Failure Fault No

A030 Incorrect Board Type Fault No

A033 Insufficient Pickoff Signal Fault Yes

A037 Sensor Check Failed Fault Yes

A038 Time Period Signal Out of Range Fault No

A100 mA Output 1 Saturated Informational To Informational or

A101 mA Output 1 Fixed Informational To Informational or

A102 Drive Overrange Informational Yes

A104 Calibration in Progress Informational To Informational or

A106 Burst Mode Enabled Informational To Informational or

A107 Power Reset Occurred Informational Yes

A113 mA Output 2 Saturated Informational To Informational or

A114 mA Output 2 Fixed Informational To Informational or

A115 No External Input or Polled Data Informational To Informational or

User can reset severity

Fault No

match

Ignore only

56 Micro Motion® Gas Density Meters (GDM)

Configure device options and preferences

Status alerts and Status Alert Severity (continued)Table 6-1:

Alert number Alert title Default severity

A118 Discrete Output 1 Fixed Informational To Informational or

A132 Sensor Simulation Active Informational Yes

A133 EEPROM Error (Display) Informational Yes

A136 Incorrect Display Type Informational Yes

6.5 Configure informational parameters

Display Not available

ProLink III Device Tools > Configuration > Meter Information

Field Communicator Configure > Manual Setup > Info Parameters

User can reset severity

Ignore only

Overview

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

Procedure

Enter data as desired.

Parameter Description

Meter Serial Number

Message A message to be stored in device memory. The message can contain up to

Descriptor A description of this device. The description can contain up to 16 characters.

Date A static date (not updated by the meter). Enter the date in the form mm/dd/yyyy.

Flange Type The sensor flange type for this device. Obtain the value from the documents

Tips

• The Field Communicator does not support all informational parameters. If you need to configure

all of the informational parameters, use ProLink III.

• The Field Communicator allows you to configure HART Tag and HART Long Tag from this location.

These parameters are replicated from Configure > Manual Setup > HART > Communications. These parameters are used in HART communications.

The serial number of the device. Enter the value from the device tag.

32 characters.

shipped with the device or from a code in the model number.

Configuration and Use Manual 57

Configure device options and preferences

58 Micro Motion® Gas Density Meters (GDM)

Integrate the meter with the control system

7 Integrate the meter with the control

system

Topics covered in this chapter:

• Configure Channel B

• Configure the mA output

• Configure the discrete output

• Configure an enhanced event

• Configure HART/Bell 202 communications

• Configure Modbus communications

• Configure Digital Communications Fault Action

7.1 Configure Channel B

Display OFF-LINE MAINT > OFF-LINE CONFG > IO > CONFIG CH B

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

Field Communicator Configure > Manual Setup > Inputs/Outputs > Channels > Channel B

Overview

Depending on your device, you can configure Channel B to operate as either an mA output or a discrete output.

Restriction

You cannot configure Channel B on the following devices: GDM TPS or GDM Fixed. On these devices, Channel B always operates as a TPS output.

Prerequisites

The configuration of Channel B must match the wiring. See the installation manual for your device.

To avoid causing process errors:

• Configure Channel B before configuring the mA output or discrete output.

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

the channel are under manual control.

Procedure

Set Channel B as desired.

Configuration and Use Manual 59

Integrate the meter with the control system

Option Description

mA output Channel B will operate as the secondary mA output.

Discrete output Channel B will operate as a discrete output.

7.2 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.

The GDM mA device has two mA outputs: Channel A and Channel B. Both outputs are fully configurable.

The GDM DO device has one mA output: Channel A. The output is fully configurable.

The GDM TPS device has one mA output: Channel A. The output is partially configurable.

The GDM Fixed device has one mA output: Channel A. The output is not configurable.

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.

• Configure mA Output Process Variable (Section 7.2.1)

• Configure Lower Range Value (LRV) and Upper Range Value (URV) (Section 7.2.2)

• Configure Added Damping (Section 7.2.3)

• Configure mA Output Fault Action and mA Output Fault Level (Section 7.2.4)

7.2.1 Configure mA Output Process Variable

Display OFF-LINE MAINT > OFF-LINE CONFG > IO > CONFIG MAO 1 > AO 1 SRC

OFF-LINE MAINT > OFF-LINE CONFG > IO > CH B > MAO 2 > CONFIG MAO 2 > AO 2 SRC

ProLink III Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 1 > Source

Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 2 > Source

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

Configure > Manual Setup > Inputs/Outputs > mA Output 2 > Secondary Variable

Overview

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

Prerequisites

60 Micro Motion® Gas Density Meters (GDM)

Integrate the meter with the control system

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 shown in the following table.

Default settings for mA Output Process VariableTable 7-1:

Default process variable assign-

Device Channel mA output

GDM mA Channel A Primary mA output Density

Channel B Secondary mA output Temperature

GDM DO Channel A Primary mA output Density

GDM TPS Channel A Primary mA output Temperature

GDM Fixed Channel A Primary mA output Temperature

ment

(1)

(1) Not configurable.

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 application-specific options. Different communications tools may use different labels for the options.

Options for mA Output Process VariableTable 7-2:

Label

Process variable

Standard

Line Density

Line Temperature TEMP Line Temperature Temperature

Line Temperature (External) EXT T Line Temperature (External) External Temperature

Line Pressure (External) EXT P Line Pressure (External) External Pressure

Volume Flow Rate (External) MAG V Volume Flow Rate (External) Volume from Mag/Vortex

Mass Flow Rate (Calculated) MAG M Mass Flow Rate (Calculated) Calculated Mass Flow from

(1)

Display ProLink III Field Communicator

DENS Line Density Density

Meter

Mag Meter Input

Configuration and Use Manual 61

Integrate the meter with the control system

Options for mA Output Process Variable (continued)Table 7-2:

Label

Process variable

Display ProLink III Field Communicator

Mass Flow Rate (External) COR M Mass Flow Rate (External) Mass from Coriolis Meter

Volume Flow Rate (Calculated)

COR V Volume Flow Rate (Calcula-

ted)

Volume Flow at Reference Temperature

Drive Gain DGAIN Drive Gain Drive Gain

Sensor Time Period TP B Sensor Time Period Sensor Time Period

User-Defined Calculation Output

UCALC User-Defined Calculation

Output

User-Defined Calculation Output

Gas measurement

Base Density BDENS Base Density (Gas) Base Density (Gas)

Specific Gravity SG Specific Gravity (Gas) Specific Gravity (Gas)

Relative Density RD Relative Density (Gas) Relative Density

Molecular Weight MW Molecular Weight (Gas) Molecular Weight

%CO

CO2 %CO2 Percent CO2

N2 %H2 Percent H2

H2 %N2 Percent N2

%CO CO %CO Percent CO

Energy measurement

Calorific Value CV Calorific Value Calorific Value

Wobbe Index WOBBE Wobbe Index Wobbe Index

Energy Flow ENRGY Energy Flow Energy Flow

(1) GDM mA and GDM DO devices only. Not supported for GDM TPS devices.

7.2.2 Configure Lower Range Value (LRV) and Upper Range Value (URV)

Display OFF-LINE MAINT > OFF-LINE CONFG > IO > CONFIG MAO 1 > 4 mA

OFF-LINE MAINT > OFF-LINE CONFG > IO > CONFIG MAO 1 > 20 mA

OFF-LINE MAINT > OFF-LINE CONFG > IO > CH B > MAO 2 > CONFIG MAO 2 > 4 mA

OFF-LINE MAINT > OFF-LINE CONFG > IO > CH B > MAO 2 > CONFIG MAO 2 > 20 mA

ProLink III Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 1 > Lower Range Value

Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 1 > Upper Range Vaue

Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 2 > Lower Range Value

Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 2 > Upper Range Vaue

Field Communicator 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

62 Micro Motion® Gas Density Meters (GDM)

Integrate the meter with the control system

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

Overview

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.

Ensure that the measurement unit for the configured process variable has been set as desired.

Procedure

Set LRV and URV as desired.

• LRV is 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.

Tip

For best performance:

• Set LRV ≥ LSL (lower sensor limit).

• Set URV ≤ USL (upper sensor limit).

• Set these values so that the difference between URV and LRV is ≥ Min Span (minimum span).

Defining URV and LRV within the recommended values for Min Span, LSL, and USL ensures that the resolution of the mA output signal is within the range of the bit precision of the D/A converter.

Note

You can set URV below LRV. For example, you can set URV to 50 and LRV to 100.

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.

Configuration and Use Manual 63

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7.2.3 Configure Added Damping

Display Not available

ProLink III Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 1 > Added Damping

Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 2 > Added Damping

Field Communicator Configure > Manual Setup > Inputs/Outputs > mA Output 1 > mA Output Settings > PV Added Damping

Configure > Manual Setup > Inputs/Outputs > mA Output 2 > mA Output Settings > SV Added Damping

Overview

Added Damping controls the amount of damping that will be applied to the mA output.

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.

Interaction between mA Output Damping and process variable damping

When mA Output Process Variable is set to density or temperature, Added Damping interacts with Density Damping or Temperature Damping.

Related information

Interaction between Density Damping and Added Damping

64 Micro Motion® Gas Density Meters (GDM)

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7.2.4 Configure mA Output Fault Action and mA Output Fault Level

Display Not available

ProLink III Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 1 > Fault Action

Device Tools > Configuration > I/O > Outputs > mA Output > mA Output 2 > Fault Action

Field Communicator Configure > Manual Setup > Inputs/Outputs > mA Output 1 > mAO1 Fault Settings > MAO1 Fault Action

Configure > Manual Setup > Inputs/Outputs > mA Output 2 > MAO2 Fault Settings > MAO2 Fault Action

Overview

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 to None. If you try to do this, the device 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

CAUTION!

If you set mA 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

Options for mA Output Fault Action and mA Output Fault LevelTable 7-3:

Option mA output behavior mA Output Fault Level

Upscale Goes to the configured fault level Default: 21.5 mA

Range: 21.0 to 21.5 mA

Configuration and Use Manual 65

Integrate the meter with the control system

Options for mA Output Fault Action and mA Output Fault Level (continued)Table 7-3:

Option mA output behavior mA Output Fault Level

Downscale (default) Goes to the configured fault level Default: 3.2 mA

Internal Zero Goes to the mA output level associated

with a process variable value of 0 (zero), as determined by Lower Range Value and

Upper Range Value settings

None Tracks data for the assigned process vari-

able; no fault action

7.3 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. Depending on your purchase option, your transmitter may have one discrete output or no discrete outputs.

Range: 3.2 to 3.6 mA

Not applicable

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.

• Configure Discrete Output Source (Section 7.3.1)

• Configure Discrete Output Polarity (Section 7.3.2)

• Configure Discrete Output Fault Action (Section 7.3.3)

7.3.1 Configure Discrete Output Source

Display OFF-LINE MAINT > OFF-LINE CONFG > IO > CH B > DO > CONFIG DO > DO SRC

ProLink III Device Tools > Configuration > I/O > Outputs > Discrete Output

Field Communicator Configure > Manual Setup > Inputs/Outputs > Discrete Output > DO Source

Overview

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.

The default setting for Discrete Output Source is Fault.

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Options for Discrete Output Source

Options for Discrete Output SourceTable 7-4:

Label

Option

Enhanced Event 1–5 Enhanced Event 1

Enhanced Event 2

Enhanced Event 3

Enhanced Event 4

Enhanced Event 5

Calibration in Progress Calibration in Progress Calibration in Progress ON Site-specific

Fault (default) Fault Indicator Fault ON Site-specific

Important

This table assumes that Discrete Output Polarity is set to Active High. If Discrete Output Polarity is set to Active Low, reverse the voltage values.

Enhanced Event 1

Enhanced Event 2

Enhanced Event 3

Enhanced Event 4

Enhanced Event 5

State

ON Site-specific

OFF 0 V

Discrete output voltageProLink III Field Communicator

7.3.2 Configure Discrete Output Polarity

Display OFF-LINE MAINT > OFF-LINE CONFG > IO > CH B > DO > CONFIG DO > DO POLAR

ProLink III Device Tools > Configuration > I/O > Outputs > Discrete Output

Field Communicator Configure > Manual Setup > Inputs/Outputs > Discrete Output > DO Polarity

Overview

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.

Configuration and Use Manual 67

Integrate the meter with the control system

Options for Discrete Output Polarity

Options for Discrete Output PolarityTable 7-5:

Polarity Description

Active High • When asserted (condition tied to DO is true), the cir-

cuit draws as much current as it can, up to a maximum of 10 mA.

• When not asserted (condition tied to DO is false), the

circuit draws less than 1 mA.

Active Low • When asserted (condition tied to DO is true), the cir-

cuit draws less than 1 mA.

• When not asserted (condition tied to DO is false), the

circuit draws as much current as it can, up to a maximum of 10 mA.

7.3.3 Configure Discrete Output Fault Action

Display Not available

ProLink III Device Tools > Configuration > Fault Processing

Field Communicator Configure > Manual Setup > Inputs/Outputs > Discrete Output > DO Fault Action

Overview

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.

CAUTION!

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.

The default setting is None.

68 Micro Motion® Gas Density Meters (GDM)

Options for Discrete Output Fault Action

Options for Discrete Output Fault ActionTable 7-6:

Discrete output behavior

Integrate the meter with the control system

Label

Upscale • Fault: discrete output is ON

Downscale • Fault: discrete output is OFF

None (default) Discrete output is controlled by its assignment

Polarity=Active High Polarity=Active Low

(site-specific voltage)

• No fault: discrete output is con-

trolled by its assignment

(0 V)

• No fault: discrete output is con-

trolled by its assignment

Fault indication with the discrete output

To indicate faults via the 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.

7.4 Configure an enhanced event

Display Not available

ProLink III Device Tools > Configuration > Events > Enhanced Events

Field Communicator Configure > Alert Setup > Enhanced Events

• Fault: discrete output is OFF

(0 V)

• No fault: discrete output is con-

trolled by its assignment

• Fault: discrete output is ON

(site-specific voltage)

• No fault: discrete output is con-

trolled by its assignment

Overview

An enhanced event is used to provide notification of process changes. An enhanced 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, 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.

Configuration and Use Manual 69

Integrate the meter with the control system

Options Description

HI x > A

LO x < A

IN A ≤ x ≤ B

OUT x ≤ A or x ≥ B

3. Assign a process variable to the event.

4. Set values for the required setpoints.

The event occurs when the value of the assigned process variable (x) is greater than the setpoint (Setpoint A), endpoint not included.

The event occurs when the value of the assigned process variable (x) is less than the setpoint (Setpoint A), endpoint not included.

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.

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, end- points included.

• 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.

Related information

Configure Discrete Output Source

7.5 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 (Section 7.5.1)

• Configure HART variables (PV, SV, TV, QV) (Section 7.5.2)

• Configure burst communications (Section 7.5.3)

7.5.1 Configure basic HART parameters

Display OFF-LINE MAINT > OFF-LINE CONFG > HART

ProLink III Device Tools > Configuration > Meter Information

Device Tools > Configuration > Communications > Communications (HART)

Field Communicator Configure > Manual Setup > HART > Communications

70 Micro Motion® Gas Density Meters (GDM)

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Overview

Basic HART parameters include the HART address, HART tags, and the operation of the primary mA output.

Restrictions

• Your device supports HART 7. If you are using HART 5, HART Long Tag is not available.

• HART Tag, HART Long Tag, and mA Output Action are not configurable from the display.

Procedure

1. Set HART Address to a unique value on your network.

Valid address values are between 0 and 15. The default address (0) is typically used unless you are in a multidrop environment.

Tip

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. Set HART Long Tag to a unique value on your network.

3. Ensure that mA Output Action is configured appropriately.

Options Description

Enabled (Live) The primary mA output reports process data as configured. This is

the appropriate setting for most applications.

Disabled (Fixed) The primary mA output is fixed at 4 mA and does not report process

data.

Important

If you use ProLink II or ProLink III to set HART Address to 0, the program automatically enables mA Output Action. If you use ProLink II or 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.

7.5.2 Configure HART variables (PV, SV, TV, QV)

Display Not available

ProLink III Device Tools > Configuration > Communications > Communications (HART)

Field Communicator Configure > Manual Setup > Inputs/Outputs > Variable Mapping

Configuration and Use Manual 71

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Overview

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).

Restriction

On some devices, the PV is fixed to a specific process variable and cannot be changed.

Options for HART variables

Options for HART variablesTable 7-7:

Primary Varia-

Process variable

Line Density

Line Temperature ✓ ✓ ✓ ✓

Line Temperature (External) ✓ ✓ ✓ ✓

Line Pressure (External) ✓ ✓ ✓ ✓

Volume Flow Rate at Reference Conditions (External)

Volume Flow Rate (External) ✓ ✓ ✓ ✓

Mass Flow Rate (External) ✓ ✓ ✓ ✓

Mass Flow Rate (Calculated) ✓ ✓ ✓ ✓

Drive Gain ✓ ✓ ✓ ✓

Sensor Time Period ✓ ✓ ✓ ✓

User-Defined Calculation Output ✓ ✓ ✓ ✓

Board Temperature ✓ ✓

Input Voltage ✓ ✓

Gas measurement

Base Density ✓ ✓ ✓ ✓

Specific Gravity ✓ ✓ ✓ ✓

Relative Density ✓ ✓ ✓ ✓

Molecular Weight ✓ ✓ ✓ ✓

%CO

(1)

ble (PV)

✓ ✓ ✓ ✓

Secondary Variable (SV)

Third Variable (TV)

Fourth Variable (QV )

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Options for HART variables (continued)Table 7-7:

Primary Varia-

Process variable

%CO ✓ ✓ ✓ ✓

Energy measurement

Calorific Value ✓ ✓ ✓ ✓

Wobbe Index ✓ ✓ ✓ ✓

Energy Flow ✓ ✓ ✓ ✓

(1) GDM mA and GDM DO devices only. Not supported for GDM TPS devices.

ble (PV)

Secondary Variable (SV)

Third Variable (TV)

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.

Restriction

One some devices, the PV and the primary mA output are fixed to a specific process variable and cannot be changed.

HART variables and transmitter outputsTable 7-8:

Fourth Variable (QV )

HART variable Reported via Comments

Primary Variable (PV) Primary mA output If one assignment is changed, the other is changed auto-

matically, and vice versa.

Secondary Variable (SV) Secondary mA output, if

present on your transmitter

Tertiary Variable (TV) Not associated with an out-

put

Quaternary Variable (QV) Not associated with an out-

put

If you have a secondary mA output: If one assignment is changed, the other is changed automatically.

If you do not have a secondary mA output: The SV must be configured directly, and the value of the SV is available only via digital communications.

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.

7.5.3 Configure burst communications

Burst mode is a mode of communication during which the transmitter regularly broadcasts HART digital information to the network via the primary mA output.

Restriction

Burst communications, including trigger mode and event notification, are not available on HART/ RS-485. These features are supported only on HART/Bell 202.

Configuration and Use Manual 73

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• Configure HART burst messages

• Configure HART trigger mode

• Configure HART event notification

Configure HART burst messages

Display Not available

ProLink III Device Tools > Configuration > Communications > Communications (HART)

Field Communicator Configure > Manual Setup > HART > Burst Mode

Overview

Burst messages contain information on process variables or transmitter status. You can configure up to three burst messages. Each message can contain different information. Burst messages also provide the mechanism for trigger mode and event notification.

Restriction

If you are using a HART 5 host, only one burst message is supported.

Procedure

1. Navigate to the burst message you want to configure.

2. Enable the burst message.

3. Set Burst Option to the desired content.

Options for burst message contentsTable 7-9:

HART command

1 Source (Primary Variable) Primary Variable The transmitter sends the primary variable (PV) in

2 Primary Variable (Percent

3 Process Variables/Current Process Vars/Current The transmitter sends the PV’s actual milliamp read-

9 Read Device Variables with

33 Transmitter Variables Field Device Vars The transmitter sends four user-specified process

ProLink III Field Communicator

Range/Current)

Status

Label

Description

the configured measurement units in each burst message (e.g., 14.0 g/sec, 13.5 g/sec, 12.0 g/sec).

Pct Range/Current The transmitter sends the PV’s actual mA level and

the PV’s percent of range in each burst message (e.g.,11.0 mA 25%).

ing and the PV, SV, TV, and QV values in measurement units in each burst message (e.g.,11.8 mA, 50 g/sec, 23 °C, 50 g/sec, 0.0023 g/cm3).

Device Variables with Status The transmitter sends up to eight user-specified

process variables in each burst message.

variables in each burst message.

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Options for burst message contents (continued)Table 7-9:

HART command

48 Read Additional Transmitter

Status

4. Depending on your choice, select the four or eight user-specified variables for the burst message, or set the HART variables as desired.

Important

If you change the HART Primary Variable (PV) or Secondary Variable (SV), the process variables assigned to the primary mA output and the secondary mA output (if applicable) are automatically changed to match. The PV cannot be changed on devices with fixed mA output assignments.

Configure HART trigger mode

Display Not available

ProLink III Device Tools > Configuration > Communications > Communications (HART)

Field Communicator Configure > Manual Setup > HART > Burst Mode > Burst Message x > Configure Update Rate

Label

Read Additional Device Status

DescriptionProLink III Field Communicator

The transmitter sends expanded device status information in each burst message.

Overview

Trigger mode uses the burst message mechanism to indicate that a process variable has changed. When trigger mode is implemented, the bursting interval (HART update rate) changes if Primary Variable or Burst Variable 0 moves above or below the user-specified trigger level. You can set up a different trigger on each burst message.

Restriction

This feature is available only with a HART 7 host.

Prerequisites

Before you can configure trigger mode, the corresponding HART burst message must be enabled.

Procedure

1. Select the burst message for which you will set up trigger mode.

2. Set Trigger Mode to the type of trigger you want to use.

Option Description

Continuous The burst message is sent at Default Update Rate. The burst interval is not affected

by changes in process variables.

Configuration and Use Manual 75

Integrate the meter with the control system

Option Description

Falling • When the specified process variable is above Trigger Level, the burst message

Rising • When the specified process variable is below Trigger Level, the burst message

Windowed This option is used to communicate that the process variable is changing rapid-

On Change • If any value in the burst message changes, the burst message is sent at Up-

is sent at Default Update Rate.

• When the specified process variable is below Trigger Level, the burst message

is sent at Update Rate.

is sent at Default Update Rate.

• When the specified process variable is above Trigger Level, the burst message

is sent at Update Rate.

ly. Trigger Level defines a deadband around the most recently broadcast value.

• If the process variable stays within this deadband, the burst message is sent

at Default Update Rate.

• If the process variable moves outside this deadband in either direction, the

burst message is sent at Update Rate.

date Rate.

• If no values change, the burst message is sent at Default Update Rate.

3. Ensure that Primary Variable or Burst Variable 0 is set to the variable that will activate the trigger. If it is not, reconfigure the burst message contents.

4. Set Trigger Level to the value of the process variable at which the trigger will be activated.

5. Set Default Update Rate to the burst interval to be used when the trigger is not active.

6. Set Update Rate to the burst interval to be used when the trigger is active.

Configure HART event notification

Display Not available

ProLink III Device Tools > Configuration > Communications > Communications (HART) > Event Notification

Field Communicator Configure > Manual Setup > HART > Event Notification

Overview

Event notification uses the burst message mechanism to indicate that an alert has occurred. When event notification is enabled and one or more of the selected alerts occurs, each active burst message will broadcast HART Command 119 until the condition is acknowledged by a HART master.

Tip

Event notification affects only HART burst messages. Whether an alert is selected for event notification or not, alert severity, alert status (active or inactive), fault timeout, and alert acknowledgment operate as normal.

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Restriction

This feature is available only with a HART 7 host.

Prerequisites

If you are using the Field Communicator, you must enable a burst message before you can configure event notification.

Procedure

1. Enable event notification.

2. Select all desired alerts.

If one or more of the selected alerts occurs, each active burst message will broadcast HART Command 119 until the alert is acknowledged by a HART master.

3. Set Trigger Interval as desired.

Trigger Interval controls the delay before HART Command 119 is broadcast.

• Default: 0 seconds

• Range: 0.5 to 3600 seconds

Trigger Interval begins when the transmitter detects the alert condition. When Trigger Interval expires:

• If the alert is still active, HART Command 119 is broadcast.

• If the alert is not active, no message is broadcast.

Tip

If you set Trigger Interval to 0, HART Command 119 is broadcast as soon as the alert is detected.

4. Set Retry Rate as desired.

Retry Rate controls the rate at which HART Command 119 is broadcast when event notification is active.

• Default: 0.5 seconds

5. Set Maximum Update Time as desired.

Maximum Update Time controls the rate at which HART Command 119 is broadcast when event notification is not active.

• Default: 60 seconds

Configuration and Use Manual 77

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7.6 Configure Modbus communications

Display OFF-LINE MAINT > OFF-LINE CONFG > CONFIG MBUS

ProLink III Device Tools > Configuration > Communications > Communications (Modbus)

Field Communicator Not available

Overview

Modbus communications parameters control Modbus communications with the transmitter.

Modbus support is implemented on the RS-485 physical layer via the RS-485 terminals.

Important

Your device automatically accepts all connection requests within the following ranges:

• Protocol: Modbus RTU (8-bit) or Modbus ASCII (7-bit) unless Modbus ASCII Support is disabled

• Parity: odd or even

• Stop bits: 1 or 2

• Baud: 1200, 2400, 4800, 9600, 19200, 38400

You do not need to configure these communications parameters on the device.

Procedure

1. Enable or disable Modbus ASCII Support as desired.

The setting of this parameter controls the range of valid Modbus addresses for your device.

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 Modbus Address to a unique value on the network.

3. 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, 2, 3, and 4.

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Bit structure of floating-point bytesTable 7-10:

Byte Bits Definition

1 SEEEEEEE S=Sign

E=Exponent

2 EMMMMMMM E=Exponent

M=Mantissa

3–4 MMMMMMMM M=Mantissa

4. (Optional) Set Additional Communications Response Delay in delay units.

A delay unit is 2/3 of the time required to transmit one character, as calculated for the port currently in use and the character transmission parameters.

Additional Communications Response Delay is used to synchronize Modbus communications with hosts that operate at a slower speed than the device. The value specified here will be added to each response the device sends to the host.

• Default: 0

• Range: 0 to 255

Tip

Do not set Additional Communications Response Delay unless required by your Modbus host.

7.7 Configure Digital Communications Fault Action

Display Not available

ProLink III Device Tools > Configuration > Fault Processing

Field Communicator Configure > Alert Setup > I/O Fault Actions > Digital Communication Fault Action

Overview

Digital Communications Fault Action specifies the values that will be reported via digital communications if the device encounters an internal fault condition.

Procedure

Set Digital Communications Fault Action as desired.

The default setting is None.

Restrictions

• If mA Output Fault Action is set to None, Digital Communications Fault Action should also be set 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.

Configuration and Use Manual 79

Integrate the meter with the control system

• If you set Digital Communications Fault Action to NAN, you cannot set mA Output Fault Action to None. If

you try to do this, the transmitter will not accept the configuration.

7.7.1 Options for Digital Communications Fault Action

Options for Digital Communications Fault ActionTable 7-11:

Label

DescriptionProLink III Field Communicator

Upscale Upscale • Process variable values indicate that the value is great-

er than the upper sensor limit.

Downscale Downscale • Process variable values indicate that the value is lower

than the lower sensor limit.

Zero IntZero-All 0 • Density is reported as 0.

• Temperature is reported as 0 °C, or the equivalent if

other units are used (e.g., 32 °F).

• Drive gain is reported as measured.

Not a Number Not-a-Number • Process variables are reported as IEEE NAN.

• Drive gain is reported as measured.

• Modbus scaled integers are reported as Max Int.

None None (default) • All process variables are reported as measured.

80 Micro Motion® Gas Density Meters (GDM)

8 Complete the configuration

Topics covered in this chapter:

• Test or tune the system using sensor simulation

• Back up transmitter configuration

• Enable HART security

8.1 Test or tune the system using sensor simulation

Display Not available

ProLink III Device Tools > Diagnostics > Testing > Sensor Simulation

Field Communicator Service Tools > Simulate > Simulate Sensor

Complete the configuration

Overview

Use sensor simulation to test the system's response to a variety of process conditions, including boundary conditions, problem conditions, or alert conditions, or to tune the loop.

Procedure

1. Enable sensor simulation.

2. Set the process variables to the desired test values.

3. Observe the system response to the simulated values and make any appropriate

changes to the transmitter configuration or to the system.

4. Modify the simulated values and repeat.

5. When you have finished testing or tuning, disable sensor simulation.

8.2 Back up transmitter configuration

ProLink III provides a configuration upload/download function which allows you to save configuration sets to your PC. This allows you to back up and restore your transmitter configuration. This is also a convenient way to replicate a configuration across multiple devices.

Restriction

This function is not available with any other communications tools.

Configuration and Use Manual 81

Complete the configuration

Procedure

1. Choose Device Tools > Configuration Transfer > Save or Load Configuration Data.

2. In the Configuration groupbox, select the configuration data you want to save.

3. Click Save, then specify a file name and location on your computer.

4. Click Start Save.

The backup file is saved to the specified name and location. It is saved as a text file and can be read using any text editor.

8.3 Enable HART security

When HART security is enabled, HART protocol cannot be used to write any data to the device. This prevents changes to configuration via HART. It does not prevent changes to configuration using any other protocol or method.

Tip

Do not enable HART security unless it is specifically required for your meter. Most installations do not enable HART security.

Prerequisites

• Strap wrench

• 3 mm hex key

Procedure

1. Power down the meter.

2. Using the strap wrench, loosen the grub screws and remove the transmitter end-

cap.

82 Micro Motion® Gas Density Meters (GDM)

Complete the configuration

Transmitter with end-cap removedFigure 8-1:

A. Transmitter end‐cap

3. Using the hex key, remove the safety spacer.

Transmitter with end-cap and safety spacer removedFigure 8-2:

A. Transmitter end‐cap B. Safety spacer

4. Move the HART security switch to the ON position (down).

Configuration and Use Manual 83

Complete the configuration

The HART security switch is the switch on the left.

HART security switchFigure 8-3:

A. HART security switch B. Unused

5. Replace the safety spacer and end-cap.

6. Power up the meter.

84 Micro Motion® Gas Density Meters (GDM)

Operations, maintenance, and troubleshooting

Part III

Operations, maintenance, and troubleshooting

Chapters covered in this part:

• Transmitter operation

• Measurement support

• Troubleshooting

Configuration and Use Manual 85

Operations, maintenance, and troubleshooting

86 Micro Motion® Gas Density Meters (GDM)

9 Transmitter operation

Topics covered in this chapter:

• Record the process variables

• View process variables and diagnostic variables

• View and acknowledge status alerts

9.1 Record the process variables

Micro Motion suggests that you make a record of specific process variable measurements, including the acceptable range of measurements, under normal operating conditions. This data will help you recognize when the process or diagnostic variables are unusually high or low, and may help you diagnose and troubleshoot application issues.

Procedure

Transmitter operation

Record the following process and diagnostic variables, under normal operating conditions.

Measurement

Variable

Line Density

Line Temperature

Line Pressure

Sensor Time Period

Pickoff Voltage

Drive Gain

Typical average Typical high Typical low

9.2 View process variables and diagnostic variables

Process variables provide information about the state of the process fluid. Diagnostic variables provide data about meter operation. This information can be used to understand and troubleshoot your process.

• View process variables using the display (Section 9.2.1)

• View process variables and other data using ProLink III (Section 9.2.2)

• View process variables using the Field Communicator (Section 9.2.3)

Configuration and Use Manual 87

Transmitter operation

9.2.1 View process variables using the display

View the desired process variable(s).

The display shows the configured display variables. For each display variable, the display reports the abbreviated name of the process variable (for example, DENS for density), the current value of that process variable, and the associated unit of measure (for example, G/ CM3).

If Auto Scroll is enabled, the display cycles through the display variables, showing each display variable for a user-specified number of seconds. Whether or not Auto Scroll is enabled, you can activate Select to move to the next display variable.

Transmitter display featuresFigure 9-1:

A. Display (LCD panel) B. Process variable C. Scroll optical switch D. Optical switch indicator: turns red when Scroll is activated E. Optical switch indicator: turns red when Select is activated F. Select optical switch G. Unit of measure for process variable H. Status LED I. Current value of process variable

9.2.2 View process variables and other data using ProLink III

Monitor process variables, diagnostic variables, and other data to maintain process quality.

ProLink III automatically displays process variables, diagnostic variables, and other data on the main screen.

Tip

ProLink III allows you to choose the process variables that appear on the main screen. You can also choose whether to view data in Analog Gauge view or digital view, and you can customize the gauge settings. For more information, see the ProLink III user manual.

88 Micro Motion® Gas Density Meters (GDM)

Transmitter operation

9.2.3 View process variables using the Field Communicator

Monitor process variables to maintain process quality.

• To view current values of basic process variables, choose Overview.

• To view a more complete set of process variables, plus the current state of the

outputs, choose Service Tools > Variables.

9.3 View and acknowledge status alerts

The transmitter posts status alerts whenever a process variable exceeds its defined limits or the transmitter detects a fault condition. You can view active alerts, and you can acknowledge alerts. Acknowledging alerts is not required.

• View and acknowledge alerts using the display (Section 9.3.1)

• View and acknowledge alerts using ProLink III (Section 9.3.2)

• View alerts using the Field Communicator (Section 9.3.3)

9.3.1 View and acknowledge alerts using the display

You can view a list containing all alerts that are active, or inactive but unacknowledged.

Note

Only Fault and Informational alerts are listed. The transmitter automatically filters out alerts with Status Alert Severity set to Ignore.

Prerequisites

Operator access to the alert menu must be enabled (default setting). If operator access to the alert menu is disabled, you must use another method to view or acknowledge status alerts.

Procedure

See Figure 9‐2.

Configuration and Use Manual 89

SEE ALARM

Select

Is ACK ALL enabled?

Scroll and Select

simultaneously for 4 seconds

Yes

ACK ALL

No NoYes

Select Scroll

EXIT

Select Scroll

Active/

unacknowledged

alarms?

Yes No

Alarm code NO ALARM

Scroll ScrollSelect

ACK EXIT

Yes No

Select Scroll

Transmitter operation

Using the display to view and acknowledge the status alertsFigure 9-2:

90 Micro Motion® Gas Density Meters (GDM)

Postrequisites

• To clear A010, A011, A012, A013 alerts, you must correct the problem,

acknowledge the alert, then repeat the calibration.

• To clear A001, A002, A029, A031 alerts, you must correct the problem,

acknowledge the alert, then power-cycle the transmitter.

• For all other alerts:

- If the alert is inactive when it is acknowledged, it will be removed from the list.

- If the alert is active when it is acknowledged, it will be removed from the list

when the alert condition clears.

Related information

Alert data in transmitter memory

9.3.2 View and acknowledge alerts using ProLink III

You can view a list containing all alerts that are active, or inactive but unacknowledged. From this list, you can acknowledge individual alerts or choose to acknowledge all alerts at once.

1. View alerts on the ProLink III main screen under Alerts. If the alerts are not displayed, choose Device Tools > Alerts.

Transmitter operation

All active or unacknowledged alerts are listed, and displayed according to the following categories:

Category Description

Failed: Fix Now A meter failure has occurred and must be addressed immediately.

Maintenance: Fix Soon A condition has occurred that can be fixed at a later time.

Advisory: Informational A condition has occurred, but requires no maintenance from you.

Notes

• All fault alerts are displayed in the Failed: Fix Now category.

• All information alerts are displayed in either the Maintenance: Fix Soon category or the

Advisory: Informational category. The category assignment is hard-coded.

• The transmitter automatically filters out alerts with Alert Severity set to Ignore.

2. To acknowledge a single alert, check the Ack checkbox for that alert. To acknowledge all alerts at once, click Ack All.

Postrequisites

• To clear A010, A011, A012, A013 alerts, you must correct the problem,

acknowledge the alert, then repeat the calibration.

• To clear A001, A002, A029, A031 alerts, you must correct the problem,

acknowledge the alert, then power-cycle the transmitter.

Configuration and Use Manual 91

Transmitter operation

• For all other alerts:

- If the alert is inactive when it is acknowledged, it will be removed from the list.

- If the alert is active when it is acknowledged, it will be removed from the list

when the alert condition clears.

Related information

Alert data in transmitter memory

9.3.3 View alerts using the Field Communicator

You can view a list containing all alerts that are active, or inactive but unacknowledged.

• To view active or unacknowledged alerts, choose Service Tools > Alerts.

All active alerts and unacknowledged alerts are listed.

Note

Only Fault and Informational alerts are listed. The transmitter automatically filters out alerts with Status Alert Severity set to Ignore.

• To refresh the list, choose Service Tools > Alerts > Refresh Alerts.

Related information

Alert data in transmitter memory

9.3.4 Alert data in transmitter memory

The transmitter maintains three sets of data for every alert that is posted.

For each alert occurrence, the following three sets of data are maintained in transmitter memory:

• Alert List

• Alert Statistics

• Recent Alerts

Alert data in transmitter memoryTable 9-1:

Transmitter action if condition occurs

Alert data structure

Alert List As determined by the alert status bits, a list of:

Contents Clearing

Cleared and regenerated with every transmit-

• All currently active alerts

• All previously active alerts that have not

been acknowledged

ter power cycle

92 Micro Motion® Gas Density Meters (GDM)

Transmitter operation

Alert data in transmitter memory (continued)Table 9-1:

Transmitter action if condition occurs

Alert data structure

Alert Statistics One record for each alert (by alert number)

Recent Alerts 50 most recent alert postings or alert clearings Not cleared; maintained across transmitter

Contents Clearing

Not cleared; maintained across transmitter that has occurred since the last master reset. Each record contains:

• A count of the number of occurrences

• Timestamps for the most recent posting

and clearing

power cycles

Configuration and Use Manual 93

Transmitter operation

94 Micro Motion® Gas Density Meters (GDM)

Micro Motion Gas Density Meter Manuals & Guides

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety messages

Emerson Flow customer service

Contents

• About this manual

Before you begin

Model codes and device typesTable 1-1:

1.3 Communications tools and protocols

1.4 Additional documentation and resources

Orientation and planning

• Terms and definitions

2.2 Core process variable and available gas process variables

2.3 GDM equations

• Power up the transmitter

• Check meter status

Quick start

3.3 Make a startup connection to the transmitter

Introduction to configuration and commissioning

• Default values

4.1.1 GDM default values

4.2 Enable access to the off-line menu of the display

4.3 Disable HART security

4.4 Set the HART lock

4.5 Restore the factory configuration

Configure process measurement

• Verify the calibration factors

5.1.1 Calibration factors

5.2 Configure line density measurement

5.2.1 Configure Density Measurement Unit

Options for Density Measurement Unit

Define a special measurement unit for density

5.2.2 Configure Density Damping

Interaction between Density Damping and Added Damping

5.2.3 Configure Density Cutoff

5.3 Configure temperature measurement

5.3.1 Configure Temperature Measurement Unit

Options for Temperature Measurement Unit

5.3.2 Configure Temperature Damping

5.3.3 Configure Temperature Input

Configure Temperature Input using ProLink III

Configure Temperature Input using the Field Communicator

5.4 Configure the pressure input

5.4.1 Configure the pressure input using ProLink III

5.4.2 Configure the pressure input using the Field Communicator

5.5 Configure energy content management

5.5.1 Configure energy content management using ProLink III

5.5.2 Configure energy content management using the Field Communicator

5.6 Configure base density measurement

5.7 Set up flow rate measurement

5.7.1 Set up flow rate measurement using ProLink III

5.7.2 Set up flow rate measurement using the Field Communicator

Configure device options and preferences

• Configure the transmitter display

6.1.1 Configure the language used for the display

6.1.2 Configure the process variables and diagnostic variables shown on the display

6.1.3 Configure the number of decimal places (precision) shown on the display

6.1.4 Configure the refresh rate of data shown on the display

6.1.5 Enable or disable automatic scrolling through the display variables

6.3 Configure security for the display menus

6.4 Configure alert handling

6.4.1 Configure Fault Timeout

6.4.2 Configure Alert Severity

Status alerts and options for Status Alert Severity

6.5 Configure informational parameters

Integrate the meter with the control system

• Configure Channel B

7.2 Configure the mA output

7.2.1 Configure mA Output Process Variable

Options for mA Output Process Variable

7.2.3 Configure Added Damping

Interaction between mA Output Damping and process variable damping

7.2.4 Configure mA Output Fault Action and mA Output Fault Level

Options for mA Output Fault Action and mA Output Fault Level

7.3 Configure the discrete output

7.3.1 Configure Discrete Output Source

Options for Discrete Output Source

7.3.2 Configure Discrete Output Polarity