Instruction Manual
D103412X012
Calibration
July 2013
217
2. The following message appears:
Use the Increase and
Decrease selections until
the displayed pressure
matches the instrument
supply pressure.
Press OK when you have read this message.
3. The value of the pressure appears on the display.
4. From the adjustment menu, select the direction and size of adjustment to the displayed value. Selecting large,
medium, and small adjustments causes changes of approximately 3.0 psi/0.207 bar/20.7 kPa, 0.30 psi/0.0207
bar/2.07 kPa, and 0.03 psi/0.00207 bar/0.207 kPa, respectively. Adjust the displayed value until it matches the
supply pressure, select Done and go to step 5.
5. Place the instrument In Service and verify that the displayed pressure matches the measured supply pressure.
Pressure A or B Sensor
Field Communicator TB > Configure/Setup > Calibration > Pressure A
Field Communicator TB > Configure/Setup > Calibration > Pressure B
To calibrate the output pressure sensor, connect an external reference gauge to the output being calibrated. The
gauge should be capable of measuring maximum instrument supply pressure. Select . Follow the prompts on the Field
Communicator display to calibrate the instrument's output pressure sensor.
1. Adjust the supply pressure regulator to the maximum instrument supply pressure. Press OK.
2. The instrument reduces the output pressure to 0. The following message appears.
Use the Increase and
Decrease selections
until the displayed
pressure matches the
output x pressure.
Press OK when you have read the message.
3. The value of the output pressure appears on the display. Press OK to display the adjustment menu.
4. From the adjustment menu, select the direction and size of adjustment to the displayed value. Selecting large,
medium, and small adjustments causes changes of approximately 3.0 psi/0.207 bar/20.7 kPa, 0.30 psi/0.0207
bar/2.07 kPa, and 0.03 psi/0.00207 bar/0.207 kPa, respectively. If the displayed value does not match the output
pressure, press OK, then repeat this step (step 4) to further adjust the displayed value. When the displayed value
matches the output pressure, select Done and go to step 5.
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