Pneumatic Connections; Pressure; Supply - Fisher FIELDVUE DVC6200 Instruction Manual

Pneumatic Connections

Pressure

Pressure connections are shown in figure 2-6. All
pressure connections on the digital valve controller are
1/4 NPT internal connections. Use at least 10 mm
(3/8-inch) tubing for all pressure connections. If
remote venting is required a minimum of 12.7 mm
(1/2-inch) tubing should be used. Refer to the vent
subsection for remote venting information.
Note
Make pressure connections to the
digital valve controller using tubing
with at least 10 mm (3/8-inch) diameter.

Supply

The DVC6200 can be used with air as the supply
medium. In addition, Gas Certified DVC6200
constructions can be used with natural gas as the
supply medium. If using natural gas as the pneumatic
supply medium, natural gas will be used in the
pneumatic output connections of the DVC6200 to any
connected equipment. In normal operation the unit will
vent the supply medium into the surrounding
atmosphere unless it is remotely vented.
WARNING
Not all DVC6200 digital valve
controllers are suitable for use with
natural gas as the supply medium. If
using natural gas as the supply
medium, the DVC6200 must be Gas
Certified. Using natural gas as the
supply medium in a non-certified
instrument can result in personal
injury or property damage.
Gas Certified instruments can be
identified by the natural gas approval
label shown in figures B-2, B-4, and
B-6. Contact your Emerson Process
Management sales office for
information on obtaining a Gas
Certified DVC6200 digital valve
controller.
September 2010
WIRING TERMINAL BOX
W9615
OUTPUT B CONNECTION
Figure 2-6. Pressure Connections
WARNING
D To avoid personal injury or
property damage resulting from
bursting of parts, do not exceed
maximum supply pressure.
D Personal injury or property
damage may result from fire or
explosion if natural gas is used as the
supply medium and appropriate
preventive measures are not taken.
Preventive measures may include, but
are not limited to, one or more of the
following: Remote venting of the unit,
re-evaluating the hazardous area
classification, ensuring adequate
ventilation, and the removal of any
ignition sources. For information on
remote venting of this controller, refer
to page 16.
D Severe personal injury or
property damage may occur from an
uncontrolled process if the
instrument supply medium is not
clean, dry, oil-free, and noncorrosive.
While use and regular maintenance of
a filter that removes particles larger
than 40 micrometers in diameter will
suffice in most applications, check
with an Emerson Process
Management field office and industry
instrument air quality standards for
use with corrosive air or if you are
unsure about the amount of air
filtration or filter maintenance.
Installation
OUTPUT A CONNECTION
SUPPLY
CONNECTION
15
2