8
65-2643RK-05-04 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 oxygen detector, calibration adapter/splash guard, 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 C onduit Hub
Terminal
Strip
Magnetic
W and
3/4 NPT
Conduit Hub
O xygen Detector
Detector
Junction Box
M2A
Junction
Box
Calibration Adapter/
Splash G uard
3/4 N PT
Conduit Hub
W indow
Mounting Slot (2x)
