How to solve the problem that the low concentration of the gas detector cannot be detected?
How to solve the problem that the low concentration of the gas detector cannot be detected? The use of gas detectors is becoming more and more extensive. Whether it is environmental monitoring, safety production, or scientific research experiments, gas detectors are required. In some cases, sound and light alarms are required. When the detected gas concentration reaches a certain value Tips, so how to solve the problem that the pump suction gas detector can't detect the low concentration?
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.
