Emerson MMI-20019043 Manuel D’Utilisation

In some circumstances, both Density Damping and Added Damping are applied to the reported
density value.

Density Damping

 controls the rate of change in the density process variable. Added Damping

controls the rate of change reported via the mA output. If mA Output Process Variable is set to
Density

, and both Density Damping and Added Damping are set to non-zero values, density

damping is applied first, and the added damping calculation is applied to the result of the
first calculation.

4.5.4

Configure Density Cutoff

Display

ProLink II

ProLink

 > Configuration > Density > Low Density Cutoff

ProLink III

Device Tools

 > Configuration > Process Measurement > Density

Field Communicator Configure > Manual Setup > Measurements > Density > Density Cutoff

Density Cutoff

 specifies the lowest density value that will be reported as measured. All

density values below this cutoff will be reported as 0.

Set Density Cutoff to the value you want to use.

The default value for Density Cutoff is 0.2 g/cm

3

. The range is 0.0 g/cm

3

 to 0.5 g/cm

3

.

Density Cutoff

 affects liquid volume measurement. If the density value goes below Density

Cutoff

, the volume flow rate is reported as 0. Density Cutoff does not affect gas standard

volume measurement. Gas standard volume values are always calculated from the value
configured for Standard Gas Density.

The temperature measurement parameters control how temperature data from the
sensor is reported. Temperature data is used to compensate for the effect of temperature
on the sensor tubes during flow measurement .

The temperature measurement parameters include:

•

Temperature Measurement Unit

•

Temperature Damping

Configure process measurement

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