Operation step one
First of all, if it is a pump suction gas detector, first check whether the air pump is working normally, block the air inlet with your fingers for 5 seconds, and if you feel obvious suction normally, if there is no suction, check whether the air inlet is blocked;
Operation step two
Next, pass nitrogen to calibrate the zero point or calibrate the zero point in clean air, and then test after calibration;
Operation step three
If there is no gas detected after the zero point calibration, it is necessary to restore the factory settings;
Step 4
Finally, after the above steps are completed, it cannot be detected. It is necessary to confirm whether there is the gas to be tested on the site, or the concentration of the gas to be tested is really low. If it is lower than the minimum detection accuracy of the gas sensor, it cannot be detected.
