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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.
4. 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.
5. 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.
6. Set Pressure Source to the method that the transmitter will use to obtain pressure
data.
Option Description
Poll for external value
(5)
The transmitter will poll an external pressure device, using
HART protocol over the primary mA output.
Static or Digital Communications The transmitter will use the pressure value that it reads from
memory.
• Static: The configured value is used.
• Digital Communications: A host writes transmitter data
to transmitter memory.
7. If you chose to poll for pressure data:
a. Select the Polling Slot to use.
b. Set Polling Control to Poll as Primary or Poll as Secondary, and click Apply.
Tip
• Poll as Primary: No other HART masters will be on the network.
• Poll as Secondary: Other HART masters will be on the network. The Field Communicator
is not a HART master.
c. Set External Device Tag to the HART tag of the external pressure device, and click
Apply.
8. If you chose to use a static pressure value:
a. Set Pressure Unit to the desired unit.
(5) Not available on all transmitters.
Configure process measurement
54 Micro Motion
®
Model 1700 Transmitters with Analog Outputs