Configure Mass Flow Cutoff - Emerson Micro Motion 1700 Configuration And Use Manual

Effect of flow damping on volume measurement
Flow damping affects volume measurement for liquid volume data. Flow damping also
affects volume measurement for gas standard volume data. The transmitter calculates
volume data from the damped mass flow data.
Interaction between Flow Damping and mA Output
Damping
In some circumstances, both Flow Damping and mA Output Damping are applied to the
reported mass flow value.
Flow Damping controls the rate of change in flow process variables. mA Output Damping
controls the rate of change reported via the mA Output. If mA Output Process Variable is
set to Mass Flow Rate, and both Flow Damping and mA Output Damping are set to non-zero
values, flow damping is applied first, and the added damping calculation is applied to the
result of the first calculation.
4.1.3

Configure Mass Flow Cutoff

Display
ProLink III
Field Communicator Configure > Manual Setup > Measurements > Flow > Mass Flow Cutoff
Overview
Mass Flow Cutoff specifies the lowest mass flow rate that will be reported as measured. All
mass flow rates below this cutoff will be reported as 0.
Procedure
Set Mass Flow Cutoff to the value you want to use.
The default value for Mass Flow Cutoff is 0.0 g/sec or a sensor-specific value set at the
factory. The recommended value is 0.5% of the nominal flow rate of the attached sensor.
See the sensor specifications. Leaving Mass Flow Cutoff at 0.0 g/sec is not recommended.
Effect of Mass Flow Cutoff on volume measurement
Mass Flow Cutoff does not affect volume measurement. Volume data is calculated from
the actual mass data rather than the reported value.
Volume flow has a separate Volume Flow Cutoff that is not affected by the Mass Flow
Cutoff value.
Configuration and Use Manual
Not available
Device Tools > Configuration > Process Measurement > Flow
Configure process measurement
21