To detect the appearance of gas detectors and avoid minor issues that may arise during transportation or production assembly, we need to inspect the appearance of the gas detector for defects, cracks, or damage, and check if the entire gas detector component structure is intact. At the same time, check the machine model, label, manufacturer's name, and production time on the body of the gas detector, and verify them one by one with the information provided in the manual or manufacturer to ensure accuracy. At the same time, check the explosion-proof mark, measurement permit mark, and number of this gas detector, which must be complete and clear. Some certificates may require the manufacturer to provide.

The operation of gas detectors requires a power supply, which is usually powered by a built-in battery. We need to turn on the switch and check whether the gas detector is powered on normally. Some gas detectors continue to work by replacing the battery, while others are equipped with a charger. For gas detectors equipped with a charger, we need to test whether the charger is charging properly. When powered on normally, we need to check whether the display screen of the gas detector displays normally.