181922 Rev B
9
Controlled by ECCN:EAR99
PROPRIETARY INFORMATION –
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EAR DATA
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GAS LEAK DETECTOR (420473-2050)
The PM-MDS Gas Leak Detector utilizes a temperature compensated metal-oxide sensing
element to detect combustible gases including CNG and LNG. The detector contains two
preset detection thresholds:
Trace alarm (20% LEL of Methane)
Significant alarm (50% LEL of Methane)
The PM-MDS Gas Leak Detector contains a Bi-colored status LED which indicates:
Status LED
Indication
Solid Green
Sensor operational
Flashing Red
Trace Gas level detected (between 20% and 50% LEL)
Solid Red
Significant Gas level detected (50% LEL or higher)
Flashing Red/Green
Sensor Fault
No LED
Sensor without power
NOTE: The status LED illuminates blinking green for the first 30 seconds after
power-up.
After a significant gas leak is detected, power to the detector must be cycled to reset the status
LED.
CAUTION! CARE SHOULD BE TAKEN WHEN CLEANING THE COMPARTMENTS WHICH
HOUSE GAS LEAK DETECTORS; AVOID EXPOSURE TO SILICONES OR
SOLVENTS AND AVOID DIRECTLY HITTING WITH HIGH-PRESSURE STEAM
CLEANING OR PRESSURE WASHING SPRAY.
The gas sensing element inside the detector is a consumable item with a limited service life
dependent on environmental conditions. The sensing element is field replaceable and is
included in the Combustible Gas Detector Rebuild Kit (P/N 420483).
Operating Temperature Range
-40
⁰
F to 185
⁰
F (-40
⁰
C to 85
⁰
C)
Quiescent Current
40mA
Operating Voltage
9 to 32Vdc
Response Time
Within 90 seconds of exposure
to alarm level concentration
Field Calibration
Not Required
FIGURE 5 - PM-MDS GAS LEAK DETECTOR
