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5
D e t e c t i o n
User Manual PDM PRO CO
2
Sustainable Single Gas Detector
D e t e c t i o n
1.1 SENSOR REPLACEMENT
1. Move to a fresh air environment and power off the detector.
2. Remove the back case by unscrewing the 6 screws.
3. Remove the 2 screws on the PCB Board.
4. Carefully replace with the new sensor provided by the authorized dealers or WatchGas.
5. Ensure the sensor pins are matched with the above image and the sensor is aligned with the PCB board.
6. Assemble the detector and turn on the detector.
7. After assembling, perform Zero(N
2
, 99.9%vol) calibration, and Span(CO
2
) calibration. Before use, stabilize the
detector for 3 minutes.
1.2 BATTERY REPLACEMENT
1. Move to a fresh air environment and power off the detector.
2. Remove the back case by unscrewing the 6 screws.
3. Remove the 2 screws on the PCB Board.
4. Carefully unplug the battery from the PCB board.
5. Place the new battery in the battery protection case. Battery Specification: Rechargeable Li-ion(polymer)
power supply unit (500mAh)
6. Assemble the detector and turn on the detector.
7. Before use, stabilize the detector for 3 minutes.
