What should I do if the gas detector cannot detect when the concentration is low?
1. Check whether the pump is working. When the pump is working normally, there is a slight vibration, and you can feel obvious suction by blocking the air inlet with your fingers for 2 seconds. Then check whether the air inlet of the filter is blocked or the connection is not sealed well, resulting in air leakage without suction.
2. Introduce nitrogen gas to calibrate the zero point or calibrate the zero point in clean air, and test immediately after calibration.
3. After the zero point is calibrated, the measured gas cannot be detected, and it is necessary to restore the factory settings.
4. If it cannot be detected after restoring the factory settings, it is necessary to re-introduce nitrogen gas or perform zero-point calibration in clean air, and perform detection immediately after calibration.
5. Check whether the connecting wire of the sensor is artificially damaged or not in good contact.
6. If the above steps are still not detected, it is necessary to confirm whether there is a gas to be measured on site, or the concentration of the gas to be measured is really low. If it is lower than the detection limit of the instrument, it cannot be detected.
The pump-suction gas detector is composed of a four-in-one gas detector and an external pump. It can be used as a pump-suction gas detector or a four-in-one gas detector (diffusion type) alone, suitable for different occasions , Use in different environments.
