RKI Instruments 65-2640RK-03 - Manual (Page 8)

3 65-2640RK-03 M2A Transmitter Operator’s Manual
Chapter 2: Description
Overview
This chapter describes the components of the M2A transmitter. The transmitter is a 4 - 20
mA type detector head. It consists of the combustible gas detector, calibration adapter,
terminal PCB, the M2A junction box, and the detector junction box. The two junction box
configuration is intended for situations where the detector needs to be installed at an
inaccessible location. The detector junction box can be installed at the inaccessible location
and the M2A junction box can be installed in a more readily accessible area.
External Description
This section describes the junction boxes and all external components of the M2A
transmitter.
Figure 1: M2A External Components
3/4" NPT Conduit
Hub, Plugged
3/4" NPT Conduit Hub
Magnetic
W and
Terminal
Strip
3/4" NPT
Conduit
Hub
M2A
Junction
Box
Combustible Gas
Detector
Detector
Junction Box
Calibration Adapter
Mounting Slot (2x)
3/4" NPT
Conduit Hub
W indow