RKI Instruments M2 for 12 VDC - Manual (Page 13)

M2 Transmitter Operator’s Manual, 12 VDC Operation 8
Chapter 3: Installation & Startup
Overview
This chapter describes procedures to mount the M2 Transmitter in the monitoring
environment and wire it to input power and devices.
Mounting the M2 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 M2 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.
2. At the monitoring site, use #10 screws through the junction box’s two mounting holes
to secure the junction box to a vertical surface. Figure 3 shows the outline and
mounting dimensions of the M2. Mount the M2 with the detector facing down as
shown in Figure 3.
Figure 3: Outline & Mounting Dimensions, LEL
3/4 NPT
Conduit Hub
1 1/2-20 For
Calibration Cup
7.7 max
2.3 max
5.23
5.00
2.41
.30 (2X)
.47 (2X)
4.59
5.86
1.02