Emerson Micro Motion 1600 - Interaction between Gas Standard Volume Flow Cutoff and mA Output Cutoff

Gas Standard Volume Flow Cutoff specifies the lowest gas standard volume flow rate that will reported as
measured. All gas standard volume flow rates below this cutoff will be reported as 0.
Procedure
Set Gas Standard Volume Flow Cutoff to the value you want to use.
• Default: 0.0
• Range: 0.0 to any positive value
Interaction between Gas Standard Volume Flow Cutoff and mA Output Cutoff
Gas Standard Volume Flow Cutoff defines the lowest Gas Standard Volume flow value that the transmitter will
report as measured.
mA Output Cutoff defines the lowest flow rate that will be reported through mA Output.
If mA Output Process Variable is set to Gas Standard Volume Flow Rate, the volume flow rate reported
through mA Output is controlled by the higher of the two cutoff values.
Gas Standard Volume Flow Cutoff affects both the gas standard volume flow values reported through outputs
and the gas standard volume flow values used in other transmitter behavior (for example, events defined on
gas standard volume flow).
mA Output Cutoff affects only flow values reported through mA Output.
Example: Cutoff interaction with mA Output Cutoff lower than Gas Standard Volume Flow Cutoff
Configuration:
• mA Output Process Variable for the primary mA Output: Gas Standard Volume Flow Rate
• Frequency Output Process Variable: Gas Standard Volume Flow Rate
• mA Output Cutoff for the primary mA Output: 10SLPM (standard liters per minute)
• Gas Standard Volume Flow Cutoff: 15SLPM
Result: If the Gas Standard Volume Flow Rate drops below 15SLPM, the volume flow will be reported as 0, and
0 will be used in all internal processing.
Example: Cutoff interaction with mA Output Cutoff higher than Gas Standard Volume Flow Cutoff
Configuration:
• mA Output Process Variable for the primary mA Output: Gas Standard Volume Flow Rate
• Frequency Output Process Variable: Gas Standard Volume Flow Rate
• mA Output Cutoff for the primary mA Output: 15 SLPM (standard liters per minute)
• Gas Standard Volume Flow Cutoff: 10SLPM
Result:
• If the Gas Standard Volume Flow Rate drops below 15SLPM but not below 10SLPM:
— The primary 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 Gas Standard Volume Flow Rate drops below 10SLPM, both outputs will report zero flow, and 0 will
be used in all internal processing.
Configure process measurement Configuration and Use Manual
May2024 MS-00809-0200-1600
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