9
Single gas detector
PDM
Once completed,
will appear on the LCD. After a few
seconds, the PDM will return to Measuring mode.
If calibration fails, will appear on the LCD.
Check that the gas cylinder is not empty and that is has
not expired. Also make sure that no contaminants are
blocking the sensor opening and try again. If standard gas
calibration fails repeatedly, contact WatchGas.
CAUTION
After calibration always verify sensor response and alarm functionality prior to
using the detector by applying a known concentration of gas from another gas
cylinder.
5.3 REMAINING CALIBRATION DAY
In the standard calibration mode , press the key for a second to toggle fresh air calibration,
standard calibration, and ESC. In the ESC mode, press the key for 3 seconds, the PDM will get out
of the calibration mode and return to detection mode.
6. SELF TEST & BUMP TEST
6.1 SELF TEST
The default interval of the Self-Test is 20hr, meaning the PDM will ask for a self test after each 20
hours of use.
