Portable gas detector failure and solution 2
Fault: In the air, there is no gas to be measured, but the value fluctuates greatly or jumps
solutions:
1. Generally, the short-term zero-point fluctuation range is less than 1% of the maximum range. It is within the normal range. If there is no gas to be measured, the long-term drift is less than 2% of the maximum range. If it exceeds this range, it is necessary to confirm whether the site exists. The measured gas, or the temperature and humidity in the air fluctuate greatly, resulting in unstable values. Under normal circumstances, the temperature and humidity fluctuations cause the instrument detection value to fluctuate for a short time. After the temperature and humidity in the air are constant, the value will also be Relatively stable.
2. Confirm whether the zero calibration or target calibration operation is performed on the instrument. If the zero calibration operation is performed in the case of the gas to be measured, the low concentration gas may not be detected. If the gas is measured, the target point is performed. Calibration, but the calibration concentration value does not match the actual concentration value, which may cause the instrument value to fluctuate greatly or the detected value is too small. Both cases can be solved by restoring the factory operation.
3. If the problem cannot be solved, it is necessary to confirm whether a high-concentration gas or a high-concentration gas is applied to the sensor. If the sensor is impacted, the instrument is aged for 24 hours after power-on, and the value is unstable. The sensor was damaged by the impact.
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