In daily life, when we use a gas detector for gas detection, we sometimes encounter some minor faults. For example, the gas detector cannot detect low concentration gas, which is a common phenomenon. When this problem occurs, it will undoubtedly affect the detection work of the gas detector, so there is no way to make the detection work proceed smoothly. What if gas detector does not detect low concentration gas? The following is a brief introduction by yi yun Tian:

gas detector cannot detect low concentration gas:

1. Check whether the air pump of the gas detector is working normally, and block the air inlet with your fingers for 5 seconds. If there is obvious suction force normally, if there is no suction force, check whether the air inlet is blocked.

2, pass in nitrogen to calibrate the zero point or calibrate the zero point in clean air, and carry out detection after calibration.

3. if the measured gas cannot be detected after the zero point is calibrated, the factory settings of the gas detector shall be restored.

4. the above steps have been operated and cannot be detected. it is necessary to confirm whether there is the measured gas on site, or the concentration of the measured gas is really very low. if it is lower than the small detection accuracy of the gas sensor, it cannot be detected.

To sum up, it is the solution that the gas detector cannot detect low-concentration gas. When we encounter failure problems during the use of the gas detector, do not blindly panic to deal with it, so as to avoid some unprofessional operations that cause damage to the parts of the testing instrument.If it is confirmed that the gas detector is not accurate in detecting the actual concentration of gas in the environment, and the difference between the theoretical value and the actual value is very large, it is recommended to use the standard gas calibration instrument to ensure the accuracy of the detection, and send it to the factory for calibration or to the relevant third-party metrological verification agency above the provincial level for calibration. It is difficult for non-professional people to deal with the relevant product accuracy and other issues.