Configure Volume Flow Measurement For Liquid Applications - Emerson Micro Motion 1700 Configuration And Use Manual

Configure process measurement
Interaction between Mass Flow Cutoff and mA Output Cutoff
Mass Flow Cutoff defines the lowest mass flow value that the transmitter will report as
measured. mA Output Cutoff defines the lowest flow rate that will be reported via the mA
output. If mA Output Process Variable is set to Mass Flow Rate, the mass flow rate reported
via the mA Output is controlled by the higher of the two cutoff values.
Mass Flow Cutoff affects all reported values and values used in other transmitter behavior
(e.g., events defined on mass flow).
mA Output Cutoff affects only mass flow values reported via the mA Output.
Example: Cutoff interaction with mA Output Cutoff lower than Mass Flow Cutoff
Configuration:
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Result: If the mass flow rate drops below 15 g/sec, mass flow will be reported as 0, and 0
will be used in all internal processing.
Example: Cutoff interaction with mA Output Cutoff higher than Mass Flow Cutoff
Configuration:
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Result:
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4.2 Configure volume flow measurement for liquid
applications
The volume flow measurement parameters control how liquid volume flow is measured
and reported.
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mA Output Process Variable: Mass Flow Rate
Frequency Output Process Variable: Mass Flow Rate
mA Output Cutoff: 10 g/sec
Mass Flow Cutoff: 15 g/sec
mA Output Process Variable: Mass Flow Rate
Frequency Output Process Variable: Mass Flow Rate
mA Output Cutoff: 15 g/sec
Mass Flow Cutoff: 10 g/sec
If the mass flow rate drops below 15 g/sec but not below 10 g/sec:
- The mA Output will report zero flow.
- The Frequency Output will report the actual flow rate, and the actual flow rate
will be used in all internal processing.
If the mass flow rate drops below 10 g/sec, both outputs will report zero flow, and 0
will be used in all internal processing.
Micro Motion Model 1700 Transmitters with Analog Outputs