M2A-XL Transmitter Operator’s Manual
Chapter 2: Description
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Figure 3: Infrared (IR) Sensors
Oxygen Detectors
There are three types of oxygen detectors available: a non-explosion proof partial pressure type, a
non-explosion proof capillary type with a replaceable sensor, and an explosion proof (CSA)
capillary type with a replaceable sensor. The capillary type’s output is less susceptible to
variations in atmospheric pressure than the partial pressure type. The CSA type oxygen detector
(65-2514RK) and the non-explosion proof capillary type detector (65-2494RK) has a replaceable
plug-in sensor inside the detector housing. The entire oxygen detector must be removed if
replacement is required for the 65-2510RK.
CO
2
, 0 - 50% volume
65-2660RK-05
61-0191RK-05 (UL)
65-2661RK-05
61-0198RK-05
CO
2
, 0 - 100% volume
65-2660RK-10
61-0191RK-10 (UL)
65-2661RK-10
61-0198RK-10
HC, 0 - 100% LEL (cal. to propane)
65-2649RK-HC
61-0190RK-HC (UL)
65-2664RK-HC
61-0197RK-HC
Table 3: Infrared (IR) Detectors
Target Gas, Range
M2A-XL Part
Number
Detector Used
Detector Housing Body
Cap Gasket
Plug-In IR LEL Sensor
Detector Housing Cap
Non-XP, Replaceable-Sensor Type
Hydrophobic
Membrane
XP, Non-Replaceable-
Sensor Type
Detector Part Numbers
61-0197RK-CH4
61-0197RK-HC
61-0198RK-01
61-0198RK-02
61-0198RK-03
61-0198RK-05
61-0198RK-10
61-0199RK-CH4
Detector Part Numbers
61-0190RK-CH4
61-0190RK-HC
61-0191RK-01
61-0191RK-02
61-0191RK-03
61-0191RK-05
61-0191RK-10
61-0192RK-CH4
61-0192-HC