65-2640XL-04 M2A Transmitter Operator’s Manual
Chapter 3: Installation & Startup
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Chapter 3: Installation & Startup
Overview
This chapter describes procedures to mount the M2A Transmitter in the monitoring environment
and wire it to input power and devices.
Mounting the M2A Transmitter
1. Select a mounting site that is representative of the monitoring environment. Consider the
following when you select the mounting site.
• For the M2A junction box, select a site where the junction box is not likely to be bumped
or disturbed. Make sure there is sufficient room to perform start-up, maintenance, and
calibration procedures. The site should be easily accessible.
• For the detector junction box, 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.
• The junction boxes should be mounted no further than 200 feet from each other.
2. Use #10
screws through the M2A junction box’s two mounting slots to secure the junction
box to a vertical surface. Figure 5 shows the outline and mounting dimensions the M2A
junction box. Figure 6 shows the outline and mounting dimensions for the detector junction
box. Mount the detector junction box with the detector facing down as shown in Figure 6.
Figure 5: Outline & Mounting Dimensions, M2A Junction Box
3/4 NPT
Conduit Port
1.00
4.86
3/4 NPT
Conduit Port
Ø 0.25, 2X
5.5
5.66
2.82
6.2
