Instruction Manual
D103409X012
Calibration
May 2013
83
5. Set the current source to the target value shown on the display. The target value is the Input Range High value.
Press OK.
6. The following message appears:
Use Increase and
Decrease selections
until the displayed
current matches the
target.
Press OK when you have read this message.
7. The value of the Analog Input appears on the display. Press OK to display the adjustment menu.
8. From the adjustment menu, select the direction and size of adjustment to the displayed value. If the displayed value
does not match the current source, press OK, then repeat this step (step 8) to further adjust the displayed value.
When the displayed value matches the current source, select Done and go to step 9.
9. Place the instrument In Service and verify that the analog input displayed matches the current source.
Relay Adjustment
Field Communicator Configure > Calibrate > Sensor Calibration > Relay Adjust (1‐3‐3)
Before beginning travel calibration, check the relay adjustment. Replace the digital valve controller cover when
finished.
Note
Relay B and C are not user‐adjustable.
Double‐Acting Relay
The double‐acting relay is designated by “Relay A” on a label affixed to the relay itself. For double‐acting actuators, the
valve must be near mid‐travel to properly adjust the relay. The Field Communicator will automatically position the
valve when Relay Adjust is selected.
Rotate the adjustment disc, shown in figure 5‐1, until the output pressure displayed on the Field Communicator is
between 50 and 70% of supply pressure. This adjustment is very sensitive. Be sure to allow the pressure reading to
stabilize before making another adjustment (stabilization may take up to 30 seconds or more for large actuators).
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