RKI Instruments 61-1001RK-05 - Manual (Page 7)

61-1001RK-05 Combustible Gas Detector• 3
detector into the hub. The terminal block within the junction box facilitates the wiring
process. A cover on the front of the junction box allows access to the interior of the
junction box.
Installation
This section describes procedures to mount the hydrogen detector in the monitoring
environment and wire the detector to a controller.
NOTE: The NC-6205-05 detector retains its explosion proof classification only when
installed in the explosion proof junction box. The detector is not explosion proof
if installed in a controller conduit hub.
Mounting the Hydrogen Detector
1. Select a mounting site that is representative of the monitoring environment. Consider
the following when you select the mounting site.
• Select a site where the detector is not likely to be bumped or disturbed. Make sure
there is sufficient room to perform start-up, maintenance, and calibration
procedures.
• Select a site where the target gas is likely to be found first. For hydrogen, which is
lighter than air, mount the detector near the ceiling or where hydrogen is most
likely to accumulate.
Figure 2: Mounting the Hydrogen Detector
Rubber
Spacers
3X
.75
2.70 .38
3/4 NPT
Female
3.65
1/2'' NPT
Ø 1.50
NC-6205RK-05
2.57 MAX
J-Box
3/4 x 1/2
Reducing
Bushing
H2 LEL
Detector
61-1001RK-05
7.50 max
8.0 REF