Det-Tronics PIRVOLHV Volumetric Infrared Hydrocarbon Gas Process Monitor for Heavy Hydrocarbons - Manual (Page 7)

5 3 .1 95-8632
INSTALLATION
DEVICE MOUNTINg ORIENTaTION
It is highly recommended that the PIRVOLHV be
installed in the horizontal position. See Figure 5.
TERMINaTION BOxES (pIRTB)
The PIRVOLHV is designed to be threaded into a
termination box, which is then mounted to a solid,
vibration-free wall or post.
Det-Tronics offers the Model PIRTB termination box in two
styles for use specifically with the PIRVOLHV:
• Tall Cover Model includes a window. See Figure 6.
• Short Cover Model uses solid cover. See Figure 7. This
model can also be used for detector separation.
The PIRTB terminals are UL/CSA rated for 14 to 22 AWG
wire, and DIN/VDE rated for 2.5 mm 2 wire.
gENERaL WIRINg REqUIREMENTS
NOTE
The wiring procedures in this manual are intended
to ensure proper functioning of the device under
normal conditions. However, because of the
many variations in wiring codes and regulations,
total compliance to these ordinances cannot be
guaranteed. Be certain that all wiring complies
with applicable regulations relating to the
installation of electrical equipment in a hazardous
area. If in doubt, consult the authority having
jurisdiction before wiring the system.
The use of shielded cable in conduit or shielded armored
cable is recommended for optimum RFI/EMI protection.
In applications where the wiring cable is installed in
conduit, the conduit must not be used for wiring to
other electrical equipment. To assure proper operation,
the resistance of the connecting wire must be within
the specified limits. The maximum distance between
the PIRVOLHV and power source is determined by the
power supply capability and wire size. See Figure 2
to determine the proper wire size and maximum wiring
distance allowed.
It is important that moisture not be allowed to come in
contact with the electrical connections of the system.
The use of proper piping techniques, breathers, glands,
and seals are required to prevent water ingress and/or
maintain the explosion-proof rating.
CORRECT INCORRECT
Figure 5—Recommended Orientation of PIRVOL