Data Sheet

GX 3--Way Valve and Actuator
Product Bulletin
51.1:GX 3--Way
August 2011
19
Table 13. Positioner Selection Guidelines
Type Digital I/P
(1)
I/P
(2)
P/P
(3)
Intrinsic
Safety
(4)
Flameproof /
Explosion Proof
(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.
GX 3-Way Actuator Accessories
The GX 3-Way is available with a variety of
pneumatic (P/P), electro-pneumatic (I/P), and digital
valve positioners, as well as limit switches and
solenoids. Table 1 3 provides the basic features of
the positioners offered with the GX 3-Way actuator.
The FIELDVUE DVC2000 Digital Valve
Controller
The DVC2000 digital valve controller (figure 19) is
simple to use, compact, and designed for the GX
3-Way 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 3-Way a ctuator, 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 fail-down configuration).
W8755
Figure 19. FIELDVUE DVC2000 Digital Valve Controller
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 reduces the number of mounting parts
and the 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 transmitters.
Designed to meet intrinsic safety and non-incendive
requirements, this instrument delivers scalable
functionality and high performance in a small
package.