Nowadays, with the rapid development of industrialization and urbanization, the four-in-one gas detector is widely used in many fields by virtue of its small size, light weight, fast response, high sensitivity, multi-gas concentration display and other advantages. However, in the process of using the four-in-one gas detector, we sometimes encounter situations that cannot be detected at low concentrations of gas due to various reasons. So do you know how four-in-one gas detector cannot detect at low concentrations? The following is a brief introduction by yi yun Tian:

4-in -1 gas detector cannot detect at low concentrations treatment measures:

1. check whether the pump is working. when the pump is working normally, there is slight vibration, and obvious suction can be felt by blocking the air inlet with your finger for 2s. Then check whether the air inlet of the filter of the four-in-one gas detector is blocked or the connection is not properly sealed, resulting in air leakage and no suction.

2, pass in the gas calibration zero or calibrate the zero in clean air, and the four-in-one gas detector will detect it immediately after calibration.

3 and 4-in -1 gas detectors cannot detect the measured gas after calibrating the zero point, so it is necessary to restore the factory settings.

4 and 4-in -1 gas detectors cannot be detected after the factory settings are restored. gas needs to be introduced again or zero-point calibration operation is carried out in clean air, and the detection is carried out immediately after calibration.

5. Check whether the connecting wire of the sensor is artificially damaged or has poor contact.

6. after the above steps have been done, the four-in-one gas detector still cannot detect it. it is necessary to confirm whether there is the measured gas on site, or the concentration of the measured gas is really low. if it is lower than the detection limit of the four-in-one gas detector, it cannot detect.

To sum up, it is the treatment measure that the four-in-one gas detector cannot detect at low concentration. If we can't solve the problem after the above measures, we need to directly contact the manufacturer of the four-in-one gas detector for processing.