PD663 Explosion-Proof Loop-Powered Meter
Instruction Manual
6
Pre-Installed Conduit Plug
The PD663 is supplied with one pre-installed conduit
plug for installations that do not require the use of
both conduit entries. The conduit plug includes an
internal hexagonal socket recess for removal. The
conduit plug and its factory installation are included in
all hazardous area approvals of this product.
•
In hazardous areas, conduit and conduit/stopping
plugs require the application of non-setting
(solvent free) thread sealant. It is critical that all
relevant hazardous area guidelines be followed for
the installation or replacement of conduit or plugs.
Mounting
The PD663 has two mounting holes that may be used
for 1.5" pipe mounting or wall mounting. Alternatively,
the unit may be supported by the conduit using the
conduit holes provided.
The PD663 can be mounted to a 2" pipe by using the
PDA6863 pipe mounting kit or to a 1.5" pipe using the
PDA6631 U-bolt kit.
Refer to
for details on wall or panel space
requirements.
•
Do not attempt to loosen or remove flange bolts
while the meter is in service.
Cover Jam Screw
The cover jam screw should be properly installed
once the meter has been wired and tested in a safe
environment. The cover jam screw is intended to pre-
vent the removal of the meter cover in a flameproof
environment without the use of tools. Using a M2 hex
wrench, turn the screw clockwise until the screw con-
tacts the meter. Turn the screw an additional 1/4 to
1/2 turn to secure the cover. Caution: Excess torque
may damage the threads and/or wrench.
Dimensions
All units: inches [mm]
Figure 1. Enclosure Dimensions – Front View
Figure 2. Enclosure Dimensions –
Side Cross Section View
Note:
The supplied conduit plug may extend
up to 0.6 in [15 mm] from the conduit opening
when installed.
Ø 0.35 (Ø 9.0)
2.31 (58.6)
4.30 (109.2)
4.27 (108.4)
2.44 (61.9)
2.74 (69.7)
3.62 (92.0)
2.17 (55.0)
