Emerson Micro Motion 1500 Configuration And Use Manual page 73

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 process variable. At the end of the interval, the internal value will
reflect 63% of the change in the actual measured value.
Added Damping 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., a 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. The range is 0.0 to 440 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.
Table 6-4: Valid values for Added Damping
Setting of Update Rate
Normal
Special
Interaction between mA Output Damping and process
variable damping
When mA Output Source is set to a flow rate variable, mA Output Damping interacts with
Flow Damping. If multiple damping parameters are applicable, the effect of damping the
process variable is calculated first, and the mA output damping calculation is applied to
the result of that calculation.
Configuration and Use Manual
Process variable
N/A
100 Hz variable (if assigned
to the mA Output)
100 Hz variable (if not as-
signed to the mA Output)
All other process variables
Integrate the meter with the control system
Update rate
in effect Valid values for Added Damping
20 Hz
0.0, 0.1, 0.3, 0.75, 1.6, 3.3, 6.5, 13.5, 27.5, 55,
110, 220, 440
100 Hz
0.0, 0.04, 0.12, 0.30, 0.64, 1.32, 2.6, 5.4, 11, 22,
44, 88, 176, 350
6.25 Hz
0.0, 0.32, 0.96, 2.40, 5.12, 10.56, 20.8, 43.2, 88,
176, 352
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