RKI Instruments 65-2405RKSS - Manual (Page 8)

4 • 65-2405RKSS Combustible Gas Transmitter
The bottom conduit hub includes a 3/4 in. x 1/2 in. reducer that allows you to screw the
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. A locking set screw on the junction box cover allows you to secure the
junction box cover and prevent it from being removed.
Installation
This section describes procedures to mount the combustible gas transmitter in the
monitoring environment and wire the transmitter to a controller.
Mounting the Combustible Gas Transmitter
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 transmitter 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 lighter gases,
mount the detector near the ceiling; for heavier gases, mount the detector near the
floor.
Figure 2: Mounting the Combustible Gas Transmitter
2. At the monitoring site you select, hang or mount the junction box with the detector
facing down (see Figure 2).
J-Box
3.66
3.15
2.40
3/4 NPT
Female,
2X
.20 Dia. x .45
Slot, 2X
7.40 MAX
3/4 x 1/2 Reducing Bushing
Combustible Detector
3.34
.75