Data Sheet

GX Control Valve and Actuator
D103171X012
Product Bulletin
51.1:GX
March 2012
23
Table 22. Positioner Selection Guidelines
Type Digital I/P
(1)
I/P
(2)
P/P
(3)
Intrinsic
Safety
(4)
Flameproof /
Explosionproof
(4)
Non- Incendive
(4)
DVC2000 X X X
DVC6200 X X X X
3661 X X X
3660 X
1. Digital I/P - microprocessor based electro -pneumatic with HART communication.
2. I/P - electro-pneumatic
3. P/P - pneumatic
4. Refer to Fisher bulletin 9.2:001 for instrument hazardous area classification details.
Fisher GX Actuator
Accessories
The GX is available with a variety of pneumatic (P/P),
electro-pneumatic(I/P),anddigitalvalvepositioners,
as well as limit switches and solenoids. Table 22
provides the basic features of the positioners offered
with the GX actuator.
The Fisher FIELDVUE
DVC2000 Digital Valve
Controller
The DVC2000 digital valve controller (figure 19) is
simple to use, compact, and designed for the GX
control valve. It converts a 4-20mA input signal into a
pneumatic output signal, which feeds the control valve
actuator. Instrument setup is performed with a
pushbutton and liquid crystal display (LCD) interface.
This interface is protected from the environment
within an IP66 enclosure. Multiple languages are
supported with the local interface including German,
French, Italian, Spanish, Chinese, Japanese,
Portuguese,Russian,Polish,Czech,Arabic,and
English. Additionally, HARTr communication is
supported over the 4-20mA loop wiring.
The DVC2000 is designed to be integrally mounted to
the GX actuator, avoiding the need for mounting
brackets. The DVC2000 mounts directly to an interface
pad on the actuator yoke leg with a secure 3-point
mounting. An internal passage inside the yoke leg
transmits the pneumatic signal to the actuator casing,
eliminating the need for external tubing (in the
air-to-open configuration).
Figure 19. Fisher FIELDVUE DVC2000
Digital Valve Controller
W8755
The high-performance linkage-less position feedback
system eliminates physical contact between the valve
stem and the digital valve controller or instrument.
There are no wearing parts so cycle life is maximized.
Additionally, the elimination of levers and linkages
reducesthenumberofmountingpartsandthe
mounting complexity. Digital valve controller or
instrument replacement and maintenance is simplified
because the feedback parts stay connected to the
actuator.
The DVC2000 is available with an optional module
which includes two (2) integral limit switches and a
stem position transmitter. The limit switches are
configurable for open and closed valve indication. The
position transmitter provides a 4-20mA signal for valve
position feedback verification. As an integral
component to the instrument, this option module
avoids the need for difficult-to-mount external
switches and transmi tters.
Designed to meet intrinsic safety and non-incendive
requirements, this instrument delivers scalable
functionality and high performance in a small package.