Emerson Fisher FIELDVUE DVC2000, Instruction Manual

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DVC2000 Digital Valve Controller
July 2009 2-6
Figure 2-5. Air-to-Close Magnet Array Alignment
ALIGNMENT
TEMPLATE
W9221
LINE UP WITH LOWER
EXTREME OF VALID
TRAVEL RANGE
Figure 2-6. Mounting Holes for Linear Actuators
W9015
M8 THREADED
MOUNTING HOLES
in the feedback slot of the DVC2000 housing is
between the valid range on the magnet assembly
throughout the range of travel. See figure 2-2.
9. Install tubing between the actuator casing and the
pneumatic positioner output connection that has the
arrow pointing away from the opening. See figure 2-7.
Mounting on GX Actuators
The DVC2000 digital valve controller mounts directly
on the GX actuator without the need for a mounting
bracket.
However, in applications where the process
temperature exceeds 80
C (176 F), it may be
necessary to apply an insulating gasket between the
Figure 2-7. Conduit and Pneumatic Thread Variations
W9016
ARROW P0INTING AWAY FROM
PORT = OUTPUT TO ACTUATOR
ARROW P0INTING TOWARDS
THE PORT = AIR SUPPLY IN
1/4 NPT
PNEUMATIC
CONNECTIONS
G1/4
PNEUMATIC
CONNECTIONS
Figure 2-8. Mounting to Fisher GX Actuator with Insulating
Gasket and O-Ring.
actuator yoke and the DVC2000, as shown in figure
2-8, The heat conducted from the process line will
transmit through the valve body and actuator and
ultimately to the DVC2000. Temperature seen at the
DVC2000 is a function of the ambient temperature as
well as the process temperature. Guidelines on when
to apply the high temperature gasket set are shown in
figure 2-9.
2