Configure Process Measurement Using Prolink Iii; Configure Specific Gravity, Molecular Weight, Or Relative Density Parameters Using Prolink Iii - Emerson Micro Motion SGM Configuration And Use Manual

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Configuration and Use Manual
MMI-20020954
7 Configure process measurement using
ProLink III
7.1 Configure specific gravity, molecular weight, or
relative density parameters using ProLink III
These parameters control the measurement of the primary process variable.
Related information
Configure Damping using ProLink III
Configure the molecular weight of air using ProLink III
7.1.1 Configure Damping using ProLink III
Device Tools → Configuration → Process Measurement → Specific Gravity → Damping
ProLink III
Device Tools → Configuration → Process Measurement → Molecular Weight → Damping
Device Tools → Configuration → Process Measurement → Relative Density → Damping
Damping controls the amount of damping that will be applied to the primary process variable: specific
gravity, molecular weight, or relative density.
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.
Tip
Damping affects all process variables that are calculated from the primary process variable: specific gravity,
molecular weight, or relative density.
Procedure
Set Damping to the value you want to use.
The default value is 0 seconds. The range is 0 to 440 seconds.
Interaction between Damping and Added Damping
When the mA Output is configured to report the primary process variable (specific gravity, molecular weight,
or relative density), both Damping and Added Damping are applied to the reported value.
Damping controls the rate of change in the value of the process variable in transmitter memory. Added
Damping controls the rate of change reported via the mA Output.
If mA Output Process Variable is set to Specific Gravity, Molecular Weight, or Relative Density, and both
Damping and Added Damping are set to non-zero values, the primary process variable damping is applied
first, and the added damping calculation is applied to the result of the first calculation. This value is reported
over the mA Output.
Configuration and Use Manual

Configure process measurement using ProLink III

March 2021
47

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