Fisher FIELDVUE DVC2000 Quick Start Manual page 10

DVC2000 Digital Valve Controller
July 2017
Integral Mounted Fisher Actuators
The DVC2000 digital valve controller mounts directly on the 657 size 30i - 70i, 667 size 30i - 76i, and 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 actuator yoke of the GX and the DVC2000, as shown in figure 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 9.
Figure 8. Mounting to Fisher GX Actuator with Insulating Gasket and O‐Ring.
Figure 9. Guidelines for Applying High Process Temperature Solutions to the Fisher GX and FIELDVUE DVC2000
100
80
60
40
20
0
-20
-40
-100
NOTES
ZONE 1: STANDARD GX BONNET AND STANDARD DVC2000 MOUNTING APPLY.
ZONE 2: REQUIRES GX EXTENSION BONNET OR HIGH TEMPERATURE DVC2000 GASKET SET.
Note
The GX extension bonnet option is an alternate way to address the high process temperature influence on the DVC2000. However,
if the extension bonnet is used, the high temperature DVC2000 mounting kit is not required.
10
0 50
-50
PROCESS TEMP (_C)
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Quick Start Guide
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