Pneumatic Connections; Pressure; Supply - Emerson FIELDVUE DVC6200f Instruction Manual

DVC6200f Digital Valve Controller
WIRING
TERMINAL BOX
2
W9615_fieldbus
Figure 2-5. Pressure Connections

Pneumatic Connections

Pressure

Pressure connections are shown in figure 2-5. All
pressure connections on the digital valve controller are
1/4 NPT internal connections. Use at least10 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 DVC6200f can be used with air as the supply
medium. In addition, Gas Certified DVC6200f
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 DVC6200f to any
connected equipment. In normal operation the unit will
vent the supply medium into the surrounding
atmosphere unless it is remotely vented.
16
OUTPUT A
CONNECTION
SUPPLY
CONNECTION
OUTPUT B
CONNECTION
Figure 2-6. Label for Natural Gas Certified Terminal Box
WARNING
Not all DVC6200f digital valve
controllers are suitable for use with
natural gas as the supply medium. If
using natural gas as the supply
medium, the DVC6200f 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 figure 2-6. Contact
your Emerson Process Management
sales office for information on
obtaining a Gas Certified DVC6200f
digital valve controller.
WARNING
D To avoid personal injury or
property damage resulting from
bursting or 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 18.
November 2010