Portable gas detector failure and solution
Inaccurate detection
solutions:
1. Confirm whether the gas concentration at the site is accurate. Sometimes the difference between the theoretical value and the actual value is very large. It is best to verify the accuracy of the instrument by introducing a standard gas, or send it to a third-party metrology agency for testing.
2. If the sensor is used for a long time, there may be some error in the measured value. It is necessary to confirm with the manufacturer whether the sensor can still be used any more. If the sensor itself is approaching the service life, it can be used normally even after calibration. It will not take long before it can be used normally. It is recommended to replace the sensor.
Alarm when the value is 0 or if the alarm value is not reached in the air.
solutions:
1. Check if the alarm value has been modified.
2. Check the alarm mode and whether the alarm mode has been modified.
3. Check whether the alarm status is concentration alarm or fault alarm. The concentration alarm will show AL or AH, and the red indicator will flash, and the fault alarm will light yellow.
4. If the alarm caused by human modification can be solved by restoring the factory settings, the fault alarm needs to be further checked for short circuit, open circuit, poor contact, sensor failure, etc., or sent back to the factory for inspection.
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