Configure Volume Flow Measurement For Liquid Applications - Emerson Micro Motion 9739 MVD Configuration And Use Manual

Configuration and Use Manual
MMI-20016855
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.
Cutoff interaction with mA Output Cutoff lower than Mass Flow Cutoff
Configuration:
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
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.
Cutoff interaction with mA Output Cutoff higher than Mass Flow Cutoff
Configuration:
• 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
Result:
• 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.
4.2 Configure volume flow measurement for liquid
applications
The volume flow measurement parameters control how liquid volume flow is measured and reported.
Restriction
You cannot implement both liquid volume flow and gas standard volume flow at the same time. Choose one
or the other.
4.2.1 Configure Volume Flow Type for liquid applications
Display OFF-LINE MAINT → OFF-LINE CONFG → VOL → VOL TYPE LIQUID
Configuration and Use Manual
Configure process measurement
June 2019
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