RKI Instruments M2 Rig Monitor - Manual (Page 8)

3 M2 Rig Monitor Operator’s Manual
Chapter 2: Description
Overview
This chapter describes external and internal components of the M2 Rig Monitor.
External Description
This section describes the junction box and all external components of the M2 Rig
Monitor.
Figure 1: M2 Rig Monitor External Components
Rig Monitor Junction Box
The M2 Rig Monitor’s cast aluminum junction box is dust and weather resistant. The
junction box also protects the Rig Monitor and all connections made to it. Three 3/4 in.
conduit hubs are used to connect the H
2
S detector to the junction box (cable factory
installed in the left hub), connect wiring from an external 12 VDC battery (cable factory
installed in bottom hub) and to install the strobe/horn (factory installed in top hub).
Use the junction box’s two mounting holes to mount the Rig Monitor to a vertical surface
at the monitoring site. The window in the cover on the front of the junction box allows
you to view the LCD display and use the magnetic wand to actuate the magnetic control
switches so you can perform non-intrusive calibration. Removing the cover allows you to
access the interior of the junction box.
Magnetic
Wand
Cable Bushing
(3X)
Junction
Box Cover
12 VDC Battery Cable
Strobe/Horn
Mounting
Hole (2X)
Window
To H2S
Detector
Detector Cable