16
•
Chapter 2: Description
M2A-XL Transmitter Operator’s Manual
Figure 6: CO Detectors
ESM-01 Detectors
The construction of the various ESM-01 detectors is similar. Each of the ESM-01 detectors has a
different replaceable plug-in sensor that protrudes through the detector housing cap. Although
ESM-01 detectors look the same except for the plug-in detector, the detector housing which
includes the detector socket and conditioning circuitry is specific to a sensor type. For example, a
detector housing from a Cl
2
detector cannot be used with an NH
3
detector. One of the two
detector wires is color coded for each specific detector type. The ESM-01 detectors include a
removable splashguard that screws onto the detector housing cap. When it is necessary to apply
gas to an ESM-01 detector, remove the splashguard to allow access to the sensor that protrudes
through the detector housing cap. You can then push the appropriate ESM-01 calibration cup onto
the sensor.
The table below outlines the M2A-XL part numbers and replacement detector part numbers for
the ESM-01 detectors.
Table 6: ESM-01 Detectors
Target Gas, Range
M2A-XL Part
Number
Detector Used
AsH
3
, 0 - 1.5 ppm
65-2648RK-ASH3
65-2300RK-ASH3
Cl
2
, 0 - 3 ppm
65-2648RK-CL2
65-2300RK-CL2
Cl
2
, 0 - 10 ppm
65-2648RK-CL-10
65-2300RK-CL-10
HCN, 0 - 15 ppm
65-2648RK-HCN
65-2300RK-HCN
NH
3
, 0 - 75 ppm
65-2648RK-NH3
65-2300RK-NH3
PH
3
, 0 - 1 ppm
65-2648RK-PH3
65-2300RK-PH3
SO
2
, 0 - 6 ppm
65-2648RK-SO2
65-2300RK-SO2
Detector
Housing Cap
Charcoal Filter
w/Rubber Boot
CO Plug-in Sensor
Cap Gasket
Detector Housing B ody
Cap Gasket
Hydrophobic
Mem brane
CO Plug-in Sensor
Flame
Arrestor
Guard
Detector
Housing Cap
Non-XP Type
Detector Part Number
65-2496RK
Detector Housing B ody
Rubber Boot w/
Charcoal Filter
XP Type
Detector Part Number
65-2438
65-2438-01
