16
M2A Transmitter Operator’s Manual
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 part numbers and replacement detector part numbers for the ESM-01
detectors.
Table 6: ESM-01 Detectors
Figure 7: ESM-01 Type Detector
Target Gas, Range
M2A 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
Splash Guard
(removable)
Cap Gasket
Detector Housing Body
(different for each detector type)
Sensor
(different for each detector type)
Detector Housing
Cap
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