Det-Tronics OPECL Infrared Hydrocarbon Gas Detector - Manual (Page 14)

12 95-8556 10.1
Module mounting options include:
• A vertical post with a nominal outside diameter of 4.5”
(11.43 cm). Acceptable outside diameter range is 4.0
to 5.0 inches. See Figure 5.
• For flat surface mounting, refer to Figure 6.
mounting Sequence
1. Attach the OPECL module to the pan-tilt mounting
plate and tighten the OPECL mounting bolts to 20
lb.-ft. minimum.
2. Install the lower mounting bracket.
3. Place the pan-tilt mounting plate on the lower bracket
and install the upper mounting bracket. Tighten the
mounting hardware to 20 lb.-ft. minimum. Tighten
the alignment bolts/nuts hand tight only.
noTe
Anti‑seize material (provided) must be applied
to the U‑bolt threads at the time of installation to
prevent galling.
24 vDC pOWER SUpply REqUIREmENTS
Calculate the total gas detection system power
consumption rate in watts from cold start-up. Select
a power supply with adequate capability for the
calculated load. Ensure that the selected power supply
provides regulated and filtered 24 Vdc power for the
entire system. If a back-up power system is required,
a float-type battery charging system is recommended.
If an existing source of 24 Vdc power is being utilized,
verify that system requirements are met.
noTe
If disconnection of power is required, separate
disconnect capability must be provided.
WIRINg CablE REqUIREmENTS
Always use proper cabling type and diameter for input
power as well as output signal wiring. 14 to 18 AWG
shielded stranded copper wire is recommended. For
EQP models, refer to the EQP system manual (95-8533)
for specific wiring requirements and recommendations.
Always install a properly sized master power fuse or
breaker on the system power circuit.
noTe
The use of shielded cable in conduit or shielded
armored cable is required for ATeX conformance.
In applications where the wiring is installed in
conduit, dedicated conduit is recommended. Avoid
low frequency, high voltage, and non‑signaling
conductors to prevent nuisance eMI problems.
CaUtIon
The use of proper conduit installation techniques,
breathers, glands, and seals is required to prevent
water ingress and/or maintain the explosion‑proof
rating.
MOUNTING BRACKET (2)
U-BOLT * (2)
PAN-TILT MOUNTING PLATE
OPECL MODULE
OPECL MOUNTING BOLT (2)
MOUNTING POST
B2305
* APPLY ANTI-SEIZE MATERIAL TO U-BOLT
THREADS TO PREVENT GALLING.
Figure 5—OPECL Gas Detector Mounted to Vertical Post
MOUNTING BRACKET (2)
MOUNTING BOLT (2 PER BRACKET)
PAN-TILT MOUNTING PLATE
OPECL MODULE
OPECL MOUNTING BOLT (2)
FLAT MOUNTING SURFACE
A2306
Figure 6—OPECL Gas Detector Mounted to Flat Surface