Emerson Model 1700 Manual De Usuario

Configuration:

•

mA Output Process Variable

 = Mass Flow Rate

•

Frequency Output Process Variable

 = Mass Flow Rate

•

AO Cutoff

 = 10 g/sec

•

Mass Flow Cutoff

 = 15 g/sec

Result: If the mass flow rate drops below 15 g/sec, all outputs representing mass flow will
report zero flow.

Configuration:

•

mA Output Process Variable

 = Mass Flow Rate

•

Frequency Output Process Variable

 = Mass Flow Rate

•

AO Cutoff

 = 15 g/sec

•

Mass Flow Cutoff

 = 10 g/sec

Result:

•

If the mass flow rate drops below 15 g/sec but not below 10 g/sec:

-

The mA output will report zero flow.

-

The frequency output will report the actual flow rate.

•

If the mass flow rate drops below 10 g/sec, both outputs will report zero flow.

6.2.4

Configure Added Damping

Display (standard)

Chinese-language
display

ProLink II

ProLink

 > Configuration > Analog Output > Primary Output > AO Added Damp

ProLink III

Device Tools

 > Configuration > I/O > Outputs > mA Output

Field Communicator Configure > Manual Setup > Inputs/Outputs > mA Output > mA Output Settings > PV Added 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. Added Damping controls the
amount of damping that will be applied to the mA output. It 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., the frequency output or digital
communications), or the value of the process variable used in calculations.

Integrate the meter with the control system

85