What if a gas detector gives inaccurate readings, and what are the solutions?
Generally, when we use gas detectors for gas detection in our daily lives, we encounter various malfunctions and problems, such as inaccurate gas concentration values detected by gas detectors. What should we do? How should we handle it?
Firstly, when we encounter malfunctions during the use of gas detectors, we must not panic blindly to handle them, in order to avoid unprofessional operations that may damage the components of the detection instrument. If it is confirmed that the gas detector is not accurate in detecting the actual concentration of gases in the environment, and there is a large difference between the theoretical value and the actual value, it is recommended to use standard gas calibration instruments to ensure detection accuracy, and send them to the factory for calibration or to relevant third-party metrological verification institutions at or above the provincial level for calibration. It is difficult for non professionals to handle issues related to product accuracy.
resolvent:
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 calibrate the instrument with standard gas to ensure the accuracy of the detection, 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 accuracy issues with such products.
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:
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;
2. Next, introduce nitrogen to calibrate the zero point or calibrate the zero point in clean air, and then perform testing after calibration;
3. If no gas is detected after calibrating the zero point, it is necessary to restore the factory settings;
4. After completing all the above steps, if the gas cannot be detected, it is necessary to confirm whether there is a measured gas on site, or if the concentration of the measured gas is indeed very low. If it is lower than the minimum detection accuracy of the gas sensor, it cannot be detected.
