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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.
• If the mass flow rate drops below 10 g/sec, both outputs will report zero flow.
6.2.4 Configure Added Damping
ProLink II ProLink > Configuration > Analog Output > Primary Output > AO Added Damp
ProLink III Device Tools > Configuration > I/O > Outputs > mA Output
Field Communicator Configure > Manual Setup > Inputs/Outputs > mA Output > mA Output Settings > PV Added Damping
Overview
Damping is used to smooth out small, rapid fluctuations in process measurement. Damping
Value specifies the time period (in seconds) over which the transmitter will spread changes
in the reported process variable. At the end of the interval, the reported process variable
will reflect 63% of the change in the actual measured value. Added Damping controls the
amount of damping that will be applied to the mA output. It affects the reporting of mA
Output Process Variable through the mA output only. It does not affect the reporting of that
process variable via any other method (e.g., the frequency output or digital
communications), or the value of the process variable used in calculations.
Note
Added Damping is not applied if the mA output is fixed (for example, during loop testing) or if the mA
output is reporting a fault. Added Damping is applied while sensor simulation is active.
Procedure
Set Added Damping to the desired value.
The default value is 0.0 seconds.
When you specify a value for Added Damping, the transmitter automatically rounds the value
down to the nearest valid value.
Note
Added Damping values are affected by the setting of Update Rate and 100 Hz Variable.
Valid values for Added DampingTable 6-3:
Setting of Update Rate
Process variable
Update rate
in effect
Valid values for Added Damping
Normal
N/A 20 Hz 0.0, 0.1, 0.3, 0.75, 1.6, 3.3, 6.5, 13.5, 27.5, 55,
110, 220, 440
Integrate the meter with the control system
76 Micro Motion
®
Model 1500 Transmitters with Analog Outputs