Configure Volume Flow Cutoff; Interaction Between Volume Flow Cutoff And Mao Cutoff - Emerson Micro Motion 5700 Configuration And Use Manual

Configure process measurement
March 2019
6. Set Volume Total Label to the name you want to use for the volume total and volume inventory unit.
The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.
Defining a special measurement unit for volume flow
You want to measure volume flow in pints per second (pints/sec).
1. Set Base Volume Unit to Gallons (gal).
2. Set Base Time Unit to Seconds (sec).
3. Calculate the conversion factor:
a. 1 gal/sec = 8 pints/sec
b. Volume Flow Conversion Factor = 1 ÷ 8 = 0.1250
4. Set Volume Flow Conversion Factor to 0.1250 .
5. Set Volume Flow Label to pints/sec .
6. Set Volume Total Label to pints .

4.3.3 Configure Volume Flow Cutoff

Display Menu > Configuration > Process Measurement > Flow Variables > Volume Flow Settings > Low Flow
Cutoff
ProLink III Device Tools > Configuration > Process Measurement > Flow > Volume Flow Cutoff
Field Communicator Configure > Manual Setup > Measurements > Flow > Volume Flow Cutoff
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.
• Default: 0.0 l/sec (liters per second)
• Range: 0 l/sec to x l/sec, where x is the sensor's flow calibration factor, in units of l/sec, multiplied by 0.2

Interaction between Volume Flow Cutoff and mAO Cutoff

Volume Flow Cutoff defines the lowest liquid volume flow value that the transmitter will report as measured.
mAO Cutoff defines the lowest flow rate that will be reported via the mA Output. If mA Output Process
Variable is set to Volume Flow Rate, the volume flow rate reported via the mA Output is controlled by the
higher of the two cutoff values.
Volume Flow Cutoff affects both the volume flow values reported via the outputs and the volume flow values
used in other transmitter behavior (e.g., events defined on the volume flow).
mAO Cutoff affects only flow values reported via the mA Output.
Cutoff interaction with mAO Cutoff lower than Volume Flow Cutoff
Configuration:
40 Micro Motion Model 5700 Transmitters with Configurable Outputs
Configuration and Use Manual
MMI-20025166