Emerson Model 1700 Manuel D’Utilisation

3.

Calculate Mass Flow Conversion Factor:
a. 1 lb/sec = 16 oz/sec
b. Mass Flow Conversion Factor = 1/16 = 0.0625

4.

Set Mass Flow Conversion Factor to 0.0625.

5.

Set Mass Flow Label to oz/sec.

6.

Set Mass Total Label to oz.

4.1.2

Configure Flow Damping

Display (standard)

Chinese-language
display

Offline Maintain

 > Configuration > Damping > Mass Flow Damping

ProLink II

ProLink

 > Configuration > Flow > Flow Damp

ProLink III

Device Tools

 > Configuration > Process Measurement > Flow

Field Communicator Configure > Manual Setup > Measurements > Flow > Flow Damping

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.

Set Flow Damping to the value you want to use.

The default value is 0.8 seconds. The range depends on the core processor type and the
setting of Update Rate, as shown in the following table.

Update Rate

Flow Damping

Standard

Normal

0 to 51.2 seconds

Special

0 to 10.24 seconds

Enhanced

Not applicable

0 to 51.2 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.

•

The combination of a high damping value and rapid, large changes in flow rate can result in
increased measurement error.

Configure process measurement

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