2. Set Units to the pressure unit used by the external pressure device.
3. Enter Flow Factor for your sensor.
The flow factor is the percent change in the flow rate per PSI. When entering the value, reverse the
sign.
Example
If the flow factor is 0.000004 % per PSI, enter −0.000004 % per PSI.
4. Enter Density Factor for your sensor.
The density factor is the change in fluid density, in g/cm
3
/PSI. When entering the value, reverse the
sign.
Example
If the density factor is 0.000006 g/cm
3
/PSI, enter −0.000006 g/cm3/PSI.
5. Set Calibration Pressure to the pressure at which your sensor was calibrated.
The calibration pressure is the pressure at which your sensor was calibrated, and defines the pressure at
which there is no pressure effect. If the data is unavailable, enter 20 PSI.
6. Choose the method to be used to supply pressure data, and perform the required setup.
Method Description Setup
Polling The meter polls an external
device for pressure data.
a. Choose Menu > Configuration > Process Measurement >
Pressure Compensation > External Pressure.
b. Set External Pressure to On.
c. Choose Poll External Device.
d. Select Polled Variable 1 or Polled Variable 2.
e. Set Variable to External Pressure.
f. Set Polling Control to Poll as Primary or Poll as Secondary.
Option Description
Poll as Primary No other HART masters will be on the
network. The Field Communicator is
not a HART master.
Poll as Secondary Other HART masters will be on the
network. The Field Communicator is
not a HART master.
g. Set External Device Tag to the HART tag of the external
pressure device.
Configuration and Use Manual Measurement support
MMI-20048166 April 2019
Configuration and Use Manual 135
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