How to Resolve Inaccurate Detection Issues with a Gas Detector?
Solution:
1. The gas detector confirms whether the actual concentration of gas in the detection environment is accurate. There is a large difference between the theoretical value and the actual value. It is recommended to use a standard gas calibration instrument to check the accuracy, or send it to a relevant third-party metrological verification institution at or above the provincial level for calibration; It is difficult for non professionals to handle issues related to product accuracy.
2. If the detection is still inaccurate after calibration, it is necessary to confirm with the manufacturer whether the gas sensor can continue to be used. If the sensor itself is approaching its service life, even if it can still be used normally for a short period of time after recalibration, there will still be inaccurate measurement values and excessive drift values after a period of time. It is recommended to contact the manufacturer to replace the gas sensor.
3. If the gas sensor is used for a long time, there may be measurement errors, and the detector needs to be recalibrated;
Solution for gas detectors that cannot detect low concentration gases:
Operation Step 1
Firstly, if it is a pump suction gas detector, check if the air pump is working properly. Block the air inlet with your fingers for 5 seconds. If you feel a significant suction force, and if there is no suction force, check if the air inlet is blocked;
Operation Step 2
Next, introduce nitrogen to calibrate the zero point or calibrate the zero point in clean air, and then perform testing after calibration;
Operation Step Three
If no gas is detected after calibrating the zero point, it is necessary to restore the factory settings;
Operation Step Four
The above steps have been completed but still cannot be detected. It is necessary to confirm whether there is a gas being tested on site, or if the concentration of the gas being tested is indeed very low. If it is lower than the minimum detection accuracy of the gas sensor, it cannot be detected.
