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a. x base units = y special units
b. Volume Flow Conversion Factor = x/y
4. Enter Volume Flow Conversion Factor.
5. Set Volume Flow Label to the name you want to use for the volume flow unit.
6. Set Volume Total Label to the name you want to use for the volume total and volume
inventory unit.
The special measurement unit is stored in the transmitter. You can configure the
transmitter to use the special measurement unit at any time.
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:
a. 1 gal/sec = 8 pints/sec
b. Volume Flow Conversion Factor = 1/8 = 0.1250
4. Set Volume Flow Conversion Factor to 0.1250.
5. Set Volume Flow Label to pints/sec.
6. Set Volume Total Label to pints.
4.2.3
Configure Volume Flow Cutoff
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ProLink II ProLink > Configuration > Flow > Vol Flow Cutoff
Field Communicator Configure > Manual Setup > Measurements > Flow > Volume Flow Cutoff
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.
Configure process measurement
30 Micro Motion
®
9739 MVD Transmitters