RKI Instruments 65-2641RK-04 - Manual (Page 14)

9 65-2641RK-04 M2A Transmitter Operator’s Manual
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 4 shows the outline and mounting
dimensions the M2A junction box. Figure 5 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 5.
Figure 4: Outline & Mounting Dimensions, M2A Junction Box
.30 (2X)
3/4 NPT
Conduit Hub
5.23
.47 (2X)
2.41
5.00
1.02
5.86
4.59