Emerson Model 1700 Manuel D’Utilisation

Update Rate

Density Damping

Enhanced

Not applicable

0 to 40.96 seconds

Tips
•

A high damping value makes the process variable appear smoother because the reported value
changes slowly.

•

A low damping value makes the process variable appear more erratic because the reported value
changes more quickly.

•

Whenever the damping value is non-zero, the reported measurement will lag the actual
measurement because the reported value is being averaged over time.

•

In general, lower damping values are preferable because there is less chance of data loss, and less
lag time between the actual measurement and the reported value.

The value you enter is automaticaly rounded down to the nearest valid value. The valid
values for Density Damping depend on the setting of Update Rate.

Valid values for Density Damping

Update Rate

Standard

Normal

0

, 0.2, 0.4, 0.8, ... 51.2

Special

0

, 0.04, 0.08, 0.16, ... 10.24

Enhanced

Not applicable

0

, 0.04, 0.08, 0.16, ... 40.96

Effect of Density Damping on volume measurement

Density Damping

 affects liquid volume measurement. Liquid volume values are calculated

from the damped density value rather than the measured density value. Density Damping
does not affect gas standard volume measurement.

Interaction between Density Damping and Added Damping

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.

Configure process measurement

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