Configuration and Use Manual: Micro Motion LNG-Series Meters Configuration and Use Manual
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Micro Motion® LNG Series Meters
Configuration and Use Manual
MMI-20032809, Rev AA
February 2017
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
United States 800-522-6277 U.K. 0870 240 1978 Australia 800 158 727
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Kuwait 663 299 01
South Africa 800 991 390
Saudi Arabia 800 844 9564
UAE 800 0444 0684
Contents
Contents
Part I Getting Started
Chapter 1 Before you begin ............................................................................................................3
1.1 About this manual ....................................................................................................................... 3
1.2 Meter model codes ......................................................................................................................3
1.3 Communications tools and protocols .......................................................................................... 4
1.4 Additional documentation .......................................................................................................... 4
Chapter 2 Quick start .....................................................................................................................7
2.1 Power up the meter .....................................................................................................................7
2.2 Check meter status ......................................................................................................................7
2.3 Make a startup connection to the transmitter ..............................................................................8
2.4 Characterize the flowmeter (if required) ......................................................................................8
2.4.1 Sensor tags ................................................................................................................... 9
2.4.2 Density calibration parameters (D1, D2, K1, K2, FD, TC) .................................................. 9
2.5 Verify mass flow measurement ....................................................................................................9
2.6 Verify the zero ............................................................................................................................. 9
2.6.1 Verify the zero using ProLink III ...................................................................................10
2.6.2 Terminology used with zero verification and zero calibration ......................................11
Part II Configuration and commissioning
Chapter 3 Introduction to configuration and commissioning ....................................................... 15
3.1 Default values and ranges ..........................................................................................................15
3.2 Disable write-protection on the transmitter configuration ........................................................ 15
3.3 Restore the factory configuration .............................................................................................. 15
Chapter 4 Configure process measurement ..................................................................................17
4.1 Configure mass flow measurement ........................................................................................... 17
4.1.1 Configure Mass Flow Measurement Unit ...........................................................................17
4.1.2 Configure Flow Damping ...............................................................................................19
4.1.3 Configure Mass Flow Cutoff ...........................................................................................20
4.2 Configure volume flow measurement for liquid applications ..................................................... 21
4.2.1 Configure Volume Flow Type for liquid applications ........................................................21
4.2.2 Configure Volume Flow Measurement Unit for liquid applications ......................................21
4.2.3 Configure Volume Flow Cutoff ........................................................................................24
4.3 Configure gas standard volume (GSV) flow measurement .........................................................24
4.3.1 Configure Volume Flow Type for gas applications ........................................................... 25
4.3.2 Configure Standard Gas Density .....................................................................................25
4.3.3 Configure Gas Standard Volume Flow Measurement Unit .................................................... 26
4.3.4 Configure Gas Standard Volume Flow Cutoff .....................................................................28
4.4 Configure flow direction ........................................................................................................... 28
4.4.1 Options for Flow Direction .............................................................................................29
4.5 Configure density measurement .............................................................................................. 30
4.5.1 Configure Density Measurement Unit ...............................................................................30
Configuration and Use Manual i
Contents
4.5.2 Configure two-phase flow parameters ........................................................................31
4.5.3 Configure density damping ........................................................................................33
4.5.4 Configure Density Cutoff ............................................................................................... 34
4.6 Configure temperature measurement .......................................................................................34
4.6.1 Configure Temperature Measurement Unit ........................................................................34
4.6.2 Configure Temperature Damping .................................................................................... 35
Chapter 5 Configure device options and preferences ....................................................................37
5.1 Configure response time parameters ........................................................................................ 37
5.1.1 Configure Calculation Speed (Response Time) .................................................................. 37
5.2 Configure alert handling ............................................................................................................38
5.2.1 Configure Fault Timeout ................................................................................................38
5.2.2 Configure Status Alert Severity .......................................................................................38
5.3 Configure informational parameters ......................................................................................... 40
5.3.1 Configure the sensor index ......................................................................................... 40
5.3.2 Configure the RTD cable length .................................................................................. 41
5.3.3 Configure Sensor Serial Number .....................................................................................41
5.3.4 Configure Sensor Material ............................................................................................. 41
5.3.5 Configure Sensor Liner Material ......................................................................................42
5.3.6 Configure Sensor Flange Type ....................................................................................... 42
5.3.7 Configure Descriptor .................................................................................................... 43
5.3.8 Configure Message ......................................................................................................43
5.3.9 Configure Date ............................................................................................................43
Chapter 6 Integrate the meter with the control system ................................................................45
6.1 Configure events ....................................................................................................................... 45
6.1.1 Configure an enhanced event ..................................................................................... 45
6.2 Configure digital communications ............................................................................................ 46
6.2.1 Configure Modbus/RS-485 communications .............................................................. 47
6.2.2 Configure RS-485 terminals ........................................................................................ 48
6.2.3 Configure Digital Communications Fault Action .................................................................. 49
Chapter 7 Complete the configuration ......................................................................................... 51
7.1 Back up transmitter configuration ............................................................................................. 51
7.2 Enable write-protection on the transmitter configuration ......................................................... 51
Part III Operations, maintenance, and troubleshooting
Chapter 8 Transmitter operation ................................................................................................. 55
8.1 Custody transfer ........................................................................................................................55
8.2 Record the process variables ..................................................................................................... 55
8.3 View process variables ...............................................................................................................56
8.3.1 View process variables and other data using ProLink III ...............................................56
8.4 View transmitter status using the status LED ............................................................................. 56
8.5 View and acknowledge status alerts .......................................................................................... 57
8.5.1 View and acknowledge alerts using ProLink III ............................................................57
8.5.2 Alert data in transmitter memory ............................................................................... 58
8.6 Read totalizer and inventory values ........................................................................................... 59
8.7 Start and stop totalizers and inventories ....................................................................................59
8.8 Reset totalizers ..........................................................................................................................60
8.9 Reset inventories .......................................................................................................................60
ii Micro Motion® LNG Series Meters
Contents
Chapter 9 Measurement support ................................................................................................. 61
9.1 Options for measurement support ............................................................................................ 61
9.2 Zero the meter .......................................................................................................................... 61
9.2.1 Zero the meter using ProLink III ..................................................................................61
9.2.2 Record the zeros .........................................................................................................63
9.3 Validate the meter .....................................................................................................................63
9.3.1 Alternate method for calculating the meter factor for volume flow .............................65
9.4 Perform a (standard) D1 and D2 density calibration ...................................................................65
9.4.1 Perform a D1 and D2 density calibration using ProLink III ........................................... 66
Chapter 10 Troubleshooting .......................................................................................................... 69
10.1 Status LED states ....................................................................................................................... 69
10.2 Status alerts, causes, and recommendations ............................................................................. 70
10.3 Flow measurement problems ................................................................................................... 75
10.4 Density measurement problems ............................................................................................... 77
10.5 Temperature measurement problems .......................................................................................78
10.6 Check power supply wiring ........................................................................................................78
10.7 Check grounding .......................................................................................................................79
10.8 Check for radio frequency interference (RFI) ..............................................................................79
10.9 Check for two-phase flow (slug flow) ......................................................................................... 80
10.10 Check the drive gain .................................................................................................................. 80
10.10.1 Collect drive gain data ................................................................................................ 81
10.11 Check the pickoff voltage .......................................................................................................... 81
10.11.1 Collect pickoff voltage data ........................................................................................ 82
10.12 Check for internal electrical problems ....................................................................................... 82
10.12.1 Check the sensor coils .................................................................................................83
Appendices and reference
Appendix A Using ProLink III with the transmitter ...........................................................................85
A.1 Connect with ProLink III ............................................................................................................ 85
A.1.1 Connection types supported by ProLink III ..................................................................85
A.1.2 Connect with ProLink III to the service port ................................................................. 85
A.1.3 Connect with ProLink III to the RS-485 port ................................................................. 86
Appendix B Default values and ranges ............................................................................................ 89
B.1 Default values and ranges ..........................................................................................................89
Configuration and Use Manual iii
Contents
iv Micro Motion® LNG Series Meters
Part I
Getting Started
Chapters covered in this part:
Before you begin
•
Quick start
•
Getting Started
Configuration and Use Manual 1
Getting Started
2 Micro Motion® LNG Series Meters
1 Before you begin
Topics covered in this chapter:
About this manual
•
Meter model codes
•
Communications tools and protocols
•
Additional documentation
•
1.1 About this manual
This manual provides information to help you configure, commission, use, maintain, and
troubleshoot the Micro Motion LNG Series meter.
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 applicable safety standards
Before you begin
1.2
Meter model codes
Your device can be identified by the model code on the device tag.
The transmitter model number has the following form:
LNGM10S***N(P/Z)(D/I/N)***********
Model codes and device typesTable 1-1:
Model code Description I/O and communications
N Standard case • One dedicated service port/
P LNGS06S and LNGM10S
are paired
D With a dual core processor
Z Standalone sensor
I With enhanced core pro-
cessor for direct host connection with IS barrier
Modbus
• One dedicated RS-485 port/
Modbus
Configuration and Use Manual 3
Before you begin
Model codes and device types (continued)Table 1-1:
Model code Description I/O and communications
N Spare sensor without elec-
tronics
1.3 Communications tools and protocols
You can use these communications tools and protocols to interface with the transmitter.
Communications tools, protocols, and related informationTable 1-2:
Communications tool Supported protocols Scope In this manual For more information
ProLink III • Modbus/RS-485
• Service port
Modbus host • Service port
• Modbus/RS-485
Complete configuration
and commissioning
Complete configuration
and commissioning
Basic user information.
See Appendix A.
None.
User manual
• Installed with soft-
ware
• Micro Motion user
documentation CD
• www.micromo‐
tion.com
Modbus Interface Tool
(MIT) — available at
www.micromotion.com
1.4 Additional documentation
Micro Motion provides additional documentation to support the installation and operation
of the meter.
Additional documentation and resourcesTable 1-3:
Topic Document
Transmitter installation
Product Data Sheet
Hazardous area installation
4 Micro Motion® LNG Series Meters
Micro Motion Liquified Natural Gas Dispenser Installation Manual
Micro Motion LNG Series Meters Product Data Sheet (PDS)
See the approval documentation shipped with the transmitter, or
download the appropriate documentation from the Micro Motion web
site at www.micromotion.com.
All documentation resources are available on the Micro Motion web site at
www.micromotion.com.cn or on the Micro Motion user documentation DVD.
Before you begin
Configuration and Use Manual 5
Before you begin
6 Micro Motion® LNG Series Meters
2 Quick start
Topics covered in this chapter:
Power up the meter
•
Check meter status
•
Make a startup connection to the transmitter
•
Characterize the flowmeter (if required)
•
Verify mass flow measurement
•
Verify the zero
•
2.1 Power up the meter
The meter must be powered up for all configuration and commissioning tasks, or for
process measurement.
1. Ensure that all device covers and seals are closed.
Quick start
2.2
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.
2. Turn on the electrical power at the power supply.
Postrequisites
Although the sensor is ready to measure 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 equalize for approximately 10 minutes.
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.
2. Connect to the transmitter and check for active alerts.
Configuration and Use Manual 7
Quick start
Related information
View and acknowledge status alerts
Status alerts, causes, and recommendations
2.3 Make a startup connection to the transmitter
Identify the connection type to use, and follow the instructions for that connection type in
the appropriate appendix.
Communications tool Connection type to use Instructions
ProLink III Service Port Section A.1.2
RS-485 port Section A.1.3
2.4 Characterize the flowmeter (if required)
ProLink III Device Tools > Calibration Data
Overview
Characterizing the flowmeter adjusts your transmitter to match the unique traits of the
sensor it is paired with. The characterization parameters (also called calibration
parameters) describe the sensor’s sensitivity to flow, density, and temperature.
Depending on your sensor type, different parameters are required. Values for your sensor
are provided by Micro Motion on the sensor tag or the calibration certificate.
Tip
If your meter was ordered as a unit, it has already been characterized at the factory. However, you
should still verify the characterization parameters.
Procedure
1. Specify Sensor Type.
• LNG-Series (LNGS06S, LNGM10S)
2. Set the flow characterization parameters. Be sure to include all decimal points.
• Set Flow Cal (Flow Calibration Factor).
3. Set the density characterization parameters.
• Set D1, D2, TC, K1, K2, and FD.
8 Micro Motion® LNG Series Meters
2.4.1 Sensor tags
Tag on sensorsFigure 2-1:
Quick start
2.4.2 Density calibration parameters (D1, D2, K1, K2, FD, TC)
Density calibration parameters are typically on the sensor tag and the calibration
certificate.
2.5
2.6
Verify mass flow measurement
Check to see that the mass flow rate reported by the transmitter is accurate. You can use
any available method.
Connect to the transmitter with ProLink III and read the value for Mass Flow Rate in the
Process Variables panel.
Postrequisites
If the reported mass flow rate is not accurate:
• Check the characterization parameters.
• Review the troubleshooting suggestions for flow measurement issues.
Verify the zero
Verifying the zero helps you determine if the stored zero value is appropriate to your
installation, or if a field zero can improve measurement accuracy.
Configuration and Use Manual 9
Quick start
The zero verification procedure analyzes the Live Zero value under conditions of zero flow,
and compares it to the Zero Stability range for the sensor. If the average Live Zero value is
within a reasonable range, the zero value stored in the transmitter is valid. Performing a
field calibration will not improve measurement accuracy.
2.6.1 Verify the zero using ProLink III
Verifying the zero helps you determine if the stored zero value is appropriate to your
installation, or if a field zero can improve measurement accuracy.
Important
In most cases, the factory zero is more accurate than the field zero. Do not zero the meter unless one
of the following is true:
• The zero is required by site procedures.
• The stored zero value fails the zero verification procedure.
Prerequisites
ProLink III v3.5, or a later release
Important
Do not verify the zero or zero the meter if a high-severity alert is active. Correct the problem, then
verify the zero or zero the meter. You may verify the zero or zero the meter if a low-severity alert is
active.
Procedure
1. Prepare the meter:
a. Allow the meter to warm up for at least 20 minutes after applying power.
b. Run the process fluid through the sensor until the sensor temperature reaches
the normal process operating temperature.
c. Stop flow through the sensor by shutting the downstream valve, and then the
upstream valve if available.
d. Verify that the sensor is blocked in, that flow has stopped, and that the sensor is
completely full of process fluid.
2. Choose Device Tools > Device Calibration > Zero Verification and Calibration > Verify Zero and
wait until the procedure completes.
3. If the zero verification procedure fails:
a. Confirm that the sensor is completely blocked in, that flow has stopped, and that
the sensor is completely full of process fluid.
b. Verify that the process fluid is not flashing or condensing, and that it does not
contain particles that can settle out.
c. Repeat the zero verification procedure.
d. If it fails again, zero the meter.
10 Micro Motion® LNG Series Meters
Quick start
Postrequisites
Restore normal flow through the sensor by opening the valves.
2.6.2 Terminology used with zero verification and zero
calibration
Terminology used with zero verification and zero calibrationTable 2-1:
Term Definition
Zero In general, the offset required to synchronize the left pickoff and the right pickoff under
conditions of zero flow. Unit = microseconds.
Factory Zero The zero value obtained at the factory, under laboratory conditions.
Field Zero The zero value obtained by performing a zero calibration outside the factory.
Prior Zero The zero value stored in the transmitter at the time a field zero calibration is begun. May
be the factory zero or a previous field zero.
Manual Zero The zero value stored in the transmitter, typically obtained from a zero calibration proce-
dure. It may also be configured manually. Also called “mechanical zero” or “stored zero.”
Live Zero The real-time bidirectional mass flow rate with no flow damping or mass flow cutoff ap-
plied. An adaptive damping value is applied only when the mass flow rate changes dramatically over a very short interval. Unit = configured mass flow measurement unit.
Zero Stability A laboratory-derived value used to calculate the expected accuracy for a sensor. Under
laboratory conditions at zero flow, the average flow rate is expected to fall within the
range defined by the Zero Stability value (0 ± Zero Stability). Each sensor size and model
has a unique Zero Stability value. Statistically, 95% of all data points should fall within the
range defined by the Zero Stability value.
Zero Calibration The procedure used to determine the zero value.
Zero Time The time period over which the Zero Calibration procedure is performed. Unit = seconds.
Field Verification Zero A 3-minute running average of the Live Zero value, calculated by the transmitter. Unit =
configured mass flow measurement unit.
Zero Verification A procedure used to evaluate the stored zero and determine whether or not a field zero
can improve measurement accuracy.
Configuration and Use Manual 11
Quick start
12 Micro Motion® LNG Series Meters
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 13
Configuration and commissioning
14 Micro Motion® LNG Series Meters
Introduction to configuration and commissioning
3 Introduction to configuration and
commissioning
Topics covered in this chapter:
Default values and ranges
•
Disable write‐protection on the transmitter configuration
•
Restore the factory configuration
•
3.1 Default values and ranges
See Default values and ranges to view the default values and ranges for the most commonly
used parameters.
3.2 Disable write-protection on the transmitter configuration
ProLink III Device Tools > Configuration > Write-Protection
Overview
If the transmitter is write-protected, the configuration is locked and you must unlock it
before you can change any configuration parameters. By default, the transmitter is not
write-protected.
Tip
Write-protecting the transmitter prevents accidental changes to configuration. It does not prevent
normal operational use. You can always disable write-protection, perform any required configuration
changes, then re-enable write-protection.
3.3
Restore the factory configuration
ProLink III Device Tools > Configuration Transfer > Restore Factory Configuration
Overview
Restoring the factory configuration returns the transmitter to a known operational
configuration. This may be useful if you experience problems during configuration.
Configuration and Use Manual 15
Introduction to configuration and commissioning
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.
16 Micro Motion® LNG Series Meters
Configure process measurement
4 Configure process measurement
Topics covered in this chapter:
Configure mass flow measurement
•
Configure volume flow measurement for liquid applications
•
Configure gas standard volume (GSV) flow measurement
•
Configure flow direction
•
Configure density measurement
•
Configure temperature measurement
•
4.1 Configure mass flow measurement
The mass flow measurement parameters control how mass flow is measured and reported.
The mass flow measurement parameters include:
Mass Flow Measurement Unit
•
Flow Damping
•
Mass Flow Cutoff
•
4.1.1
Configure Mass Flow Measurement Unit
ProLink III Device Tools > Configuration > Process Measurement > Flow
Overview
Mass Flow Measurement Unit specifies the unit of measure that will be used for the mass flow
rate. The unit used for mass total and mass inventory is derived from this unit.
Procedure
Set Mass Flow Measurement Unit to the unit you want to use.
The default setting for Mass Flow Measurement Unit is g/sec (grams per second).
Options for Mass Flow Measurement Unit
The transmitter provides a standard set of measurement units for Mass Flow Measurement
Unit, plus one user-defined special measurement unit. Different communications tools may
use different labels for the units.
Configuration and Use Manual 17
Configure process measurement
Unit description ProLink III label
Grams per second
Grams per minute
Grams per hour
Kilograms per second
Kilograms per minute
Kilograms per hour
Kilograms per day
Metric tons per minute
Metric tons per hour
Metric tons per day
Pounds per second
Pounds per minute
Pounds per hour
Pounds per day
Short tons (2000 pounds) per minute
Short tons (2000 pounds) per hour
Short tons (2000 pounds) per day
Long tons (2240 pounds) per hour
Long tons (2240 pounds) per day
Special unit
Options for Mass Flow Measurement Unit Table 4-1:
g/sec
g/min
g/hr
kg/sec
kg/min
kg/hr
kg/day
mTon/min
mTon/hr
mTon/day
lbs/sec
lbs/min
lbs/hr
lbs/day
sTon/min
sTon/hr
sTon/day
lTon/hr
lTon/day
special
Define a special measurement unit for mass flow
ProLink III
Overview
A special measurement unit is a user-defined unit of measure that allows you to report
process data, totalizer data, and inventory data in a unit that is not available in the
transmitter. A special measurement unit is calculated from an existing measurement unit
using a conversion factor.
Procedure
1. Specify Base Mass Unit.
Base Mass Unit is the existing mass unit that the special unit will be based on.
2. Specify Base Time Unit.
18 Micro Motion® LNG Series Meters
Device Tools > Configuration > Process Measurement > Flow > Special Units
Configure process measurement
Base Time Unit is the existing time unit that the special unit will be based on.
3. Calculate Mass Flow Conversion Factor as follows:
a. x base units = y special units
b. Mass Flow Conversion Factor = x ÷ y
The original mass flow rate value is divided by this value.
4. Enter Mass Flow Conversion Factor.
5. Set Mass Flow Label to the name you want to use for the mass flow unit.
6. Set Mass Total Label to the name you want to use for the mass total and mass
inventory unit.
The special measurement unit is stored in the transmitter. You can configure the
transmitter to use the special measurement unit at any time. You must use ProLink III to
select the special measurement unit.
Example: Defining a special measurement unit for mass flow
You want to measure mass flow in ounces per second (oz/sec).
4.1.2
1. Set Base Mass Unit to Pounds (lb).
2. Set Base Time Unit to Seconds (sec).
3. Calculate Mass Flow Conversion Factor:
a. 1 lb/sec = 16 oz/sec
b. Mass Flow Conversion Factor = 1 ÷ 16 = 0.0625
4. Set Mass Flow Conversion Factor to 0.0625.
5. Set Mass Flow Label to oz/sec.
6. Set Mass Total Label to oz.
Configure Flow Damping
ProLink III Device Tools > Configuration > Process Measurement > Flow
Overview
Damping is used to smooth out small, rapid fluctuations in process measurement. Damping
Value specifies the time period (in seconds) over which the transmitter will spread changes
in the process variable. At the end of the interval, the internal value will reflect 63% of the
change in the actual measured value.
Procedure
Set Flow Damping to the value you want to use.
The default value is 0.64 seconds. The range is 0 to 60 seconds.
Configuration and Use Manual 19
Configure process measurement
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.
• The combination of a high damping value and rapid, large changes in flow rate can result in
increased measurement error.
• 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.
• For gas applications, Micro Motion recommends setting Flow Damping to 2.56 or higher.
The value you enter is automatically rounded down to the nearest valid value. Valid
damping values are 0, 0.04, 0.08, 0.16, 0.32... 40.96.
Effect of Flow Damping on volume measurement
Flow Damping affects volume measurement for liquid volume data. Flow Damping also affects
volume measurement for gas standard volume data. The transmitter calculates volume
data from the damped mass flow data.
4.1.3
Configure Mass Flow Cutoff
ProLink III Device Tools > Configuration > Process Measurement > Flow
Overview
Mass Flow Cutoff specifies the lowest mass flow rate that will be reported as measured. All
mass flow rates below this cutoff will be reported as 0.
Procedure
Set Mass Flow Cutoff to the value you want to use.
The default value for Mass Flow Cutoff is 0.0 g/sec or a sensor-specific value set at the
factory. The recommended value is 0.5% of the nominal flow rate of the attached sensor.
See the sensor specifications. Do not leave Mass Flow Cutoff to 0.0 g/sec.
Effect of Mass Flow Cutoff on volume measurement
Mass Flow Cutoff does not affect volume measurement. Volume data is calculated from the
actual mass data rather than the reported value.
20 Micro Motion® LNG Series Meters
Configure process measurement
4.2 Configure volume flow measurement for liquid applications
The volume flow measurement parameters control how liquid volume flow is measured
and reported.
The volume flow measurement parameters include:
Volume Flow Type
•
Volume Flow Measurement Unit
•
Volume Flow Cutoff
•
Restriction
You cannot implement both liquid volume flow and gas standard volume flow at the same time. You
must choose one or the other.
4.2.1 Configure Volume Flow Type for liquid applications
4.2.2
ProLink III Device Tools > Configuration > Process Measurement > Flow
Overview
Volume Flow Type controls whether liquid or gas standard volume flow measurement will be
used.
Restriction
If you are using the concentration measurement application, you must set Volume Flow Type to Liquid.
Gas standard volume measurement is incompatible with the concentration measurement
application.
Procedure
Set Volume Flow Type to Liquid.
Configure Volume Flow Measurement Unit for liquid applications
ProLink III Device Tools > Configuration > Process Measurement > Flow
Overview
Volume Flow Measurement Unit specifies the unit of measurement that will be displayed for the
volume flow rate. The unit used for the volume total and volume inventory is based on this
unit.
Configuration and Use Manual 21
Configure process measurement
Prerequisites
Before you configure Volume Flow Measurement Unit, be sure that Volume Flow Type is set to
Liquid.
Procedure
Set Volume Flow Measurement Unit to the unit you want to use.
The default setting for Volume Flow Measurement Unit is l/sec (liters per second).
Options for Volume Flow Measurement Unit for liquid applications
The transmitter provides a standard set of measurement units for Volume Flow Measurement
Unit, plus one user-defined measurement unit. Different communications tools may use
different labels for the units.
Unit description ProLink III label
Cubic feet per second
Cubic feet per minute
Cubic feet per hour
Cubic feet per day
Cubic meters per second
Cubic meters per minute
Cubic meters per hour
Cubic meters per day
U.S. gallons per second
U.S. gallons per minute
U.S. gallons per hour
U.S. gallons per day
Million U.S. gallons per day
Liters per second
Liters per minute
Liters per hour
Million liters per day
Imperial gallons per second
Imperial gallons per minute
Imperial gallons per hour
Imperial gallons per day
Barrels per second
Options for Volume Flow Measurement Unit for liquid applicationsTable 4-2:
ft3/sec
ft3/min
ft3/hr
ft3/day
m3/sec
m3/min
m3/hr
m3/day
US gal/sec
US gal/min
US gal/hr
US gal/day
mil US gal/day
l/sec
l/min
l/hr
mil l/day
Imp gal/sec
Imp gal/min
Imp gal/hr
Imp gal/day
(1)
barrels/sec
22 Micro Motion® LNG Series Meters
Configure process measurement
Options for Volume Flow Measurement Unit for liquid applications (continued)Table 4-2:
Unit description ProLink III label
Barrels per minute
Barrels per hour
Barrels per day
Beer barrels per second
Beer barrels per minute
Beer barrels per hour
Beer barrels per day
Special unit
(1) Unit based on oil barrels (42 U.S. gallons).
(2) Unit based on U.S. beer barrels (31 U.S. gallons).
(2)
barrels/min
barrels/hr
barrels/day
Beer barrels/sec
Beer barrels/min
Beer barrels/hr
Beer barrels/day
special
Define a special measurement unit for volume flow
ProLink III
Device Tools > Configuration > Process Measurement > Flow > Special Units
Overview
A special measurement unit is a user-defined unit of measure that allows you to report
process data, totalizer data, and inventory data in a unit that is not available in the
transmitter. A special measurement unit is calculated from an existing measurement unit
using a conversion factor.
Procedure
1. Specify Base Volume Unit.
Base Volume Unit is the existing volume unit that the special unit will be based on.
2. Specify Base Time Unit.
Base Time Unit is the existing time unit that the special unit will be based on.
3. Calculate Volume Flow Conversion Factor as follows:
a. x base units = y special units
b. Volume Flow Conversion Factor = x ÷ y
4. Enter Volume Flow Conversion Factor.
5. Enter Volume Flow Conversion Factor.
The original volume flow rate value is divided by this conversion factor.
6. Set Volume Flow Label to the name you want to use for the volume flow unit.
Configuration and Use Manual 23
Configure process measurement
7. Set Volume Total Label to the name you want to use for the volume total and volume
The special measurement unit is stored in the transmitter. You can configure the
transmitter to use the special measurement unit at any time. You must use ProLink III to
select the special measurement unit.
Example: Defining a special measurement unit for volume flow
You want to measure volume flow in pints per second (pints/sec).
1. Set Base Volume Unit to Gallons (gal).
2. Set Base Time Unit to Seconds (sec).
3. Calculate the conversion factor:
4. Set Volume Flow Conversion Factor to 0.1250.
5. Set Volume Flow Label to pints/sec.
6. Set Volume Total Label to pints.
inventory unit.
a. 1 gal/sec = 8 pints/sec
b. Volume Flow Conversion Factor = 1 ÷ 8 = 0.1250
4.2.3 Configure Volume Flow Cutoff
ProLink III Device Tools > Configuration > Process Measurement > Flow
Overview
Volume Flow Cutoff specifies the lowest volume flow rate that will be reported as measured.
All volume flow rates below this cutoff are reported as 0.
Procedure
Set Volume Flow Cutoff to the value you want to use.
The default value for Volume Flow Cutoff is 0.0 l/sec (liters per second). The lower limit is 0.
The upper limit is the sensor’s flow calibration factor, in units of l/sec, multiplied by 0.2.
4.3
Configure gas standard volume (GSV) flow measurement
The gas standard volume (GSV) flow measurement parameters control how gas standard
volume flow is measured and reported.
The GSV flow measurement parameters include:
Volume Flow Type
•
24 Micro Motion® LNG Series Meters
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