Calibration
September 2013
5-9
Figure 5-4. FIELDVUE DVC6020 Digital Valve Controller Mounted on Fisher 1052, Size 33 Actuator
MOUNTING
ADAPTER
(KEY 117)
FEEDBACK ARM ASSEMBLY
(KEY 84)
FEEDBACK ARM
TORSION SPRING
(KEY 93)
BIAS SPRING
(KEY 82)
ARM ASSEMBLY PIN
ARM ASSEMBLY
(KEY 91)
MOUNTING BRACKET
(KEY 74)
CAP SCREW, HEX SOCKET
(KEY 116)
CAP SCREW, HEX HEAD
(KEY 92)
A7024-2
so that the outer surface is flush with the end of the
travel sensor shaft.
4. Connect a current source to the instrument LOOP
− and LOOP + terminals. Set the current source to
any value between 4 and 20 mA. Connect the Field
Communicator to the TALK terminals.
5. Before beginning the travel sensor adjustment, set
the instrument mode to Out Of Service and the
protection to None.
6. From the Calibrate menu, select Sensor
Calibration, Travel Sensor. Follow the prompts on the
Field Communicator display to adjust the travel sensor
counts to the value listed in table 5-2.
Note
In the next step, be sure the arm
assembly outer surface remains flush
with the end of the travel sensor shaft.
7. While observing the travel sensor counts, tighten
the screw that secures the arm assembly to the travel
sensor shaft. Be sure the travel sensor counts remain
within the tolerances listed in table 5-2. Paint the
screw to discourage tampering with the connection.
8. Disconnect the Field Communicator and current
source from the instrument.
5
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