Calibration Overview; Calibrate; Travel Calibration; Auto Calibration - Fisher FIELDVUE DVC6200 Instruction Manual

DVC6200 Digital Valve Controller

Calibration Overview

When a DVC6200 digital valve controller is ordered as
part of a control valve assembly, the factory mounts
the digital valve controller on the actuator and
connects the necessary tubing, then sets up and
calibrates the controller.
For digital valve controllers that are ordered
separately, recalibration of the analog input or
pressure sensors generally is unnecessary. However,
after mounting on an actuator, perform the initial setup
then calibrate travel by selecting Calibrate, Travel
Calibration, and Auto Calibration from the Configure /
Setup menu. For more detailed calibration information,
refer to the following calibration procedures.
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Calibrate

Travel Calibration

D Auto Calibration —This procedure automatically
calibrates the travel. The calibration procedure uses
the valve and actuator stops as the 0% and 100%
calibration points.
D Manual Calibration —This procedure permits
manual calibration of the travel. This calibration
procedure allows you to determine the 0% and 100%
calibration points.
Sensor Calibration
D Pressure Sensors—This procedure permits
calibrating the three pressure sensors. Normally the
sensors are calibrated at the factory and should not
need calibration.
D Analog In Calibration—This procedure permits
calibrating the analog input sensor. Normally the
sensor is calibrated at the factory and should not need
calibration.
Relay Adjustment—This procedure permits
adjustment of the pneumatic relay.
Restore Factory Settings—This procedure permits
you to restore the calibration settings back to the
factory settings.
To display the calibrate menu, from the Online menu,
select Configure / Setup and Calibrate.
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Note
The Instrument Mode must be Out Of
Service and the Protection set to None
before the instrument can be calibrated.
If you are operating in burst mode, we
recommend that you disable burst before
continuing with calibration. Once
calibration is complete, burst mode may
then be turned back on.
WARNING
During calibration the valve will move
full stroke. To avoid personal injury
and property damage caused by the
release of pressure or process fluid,
isolate the valve from the process and
equalize pressure on both sides of the
valve or bleed off the process fluid.
Travel Calibration
If a double-acting relay is used, you will be prompted
to run the relay adjustment when auto or manual
calibration is selected. Select Yes to adjust the relay,
select No to proceed with calibration. For additional
information, refer to Relay Adjustment in this section.
Note
Relay Adjustment is only available for
the double-acting relay (Relay A).

Auto Calibration

Select Calibrate,Travel Calibration, Auto Calibration
and follow the prompts on the Field Communicator
display to automatically calibrate travel.
1. The auto calibration procedure is automatic. It is
completed when the Calibrate menu appears.
September 2010