1. According to the national regulations, "the relevant equipment in the gas alarm control system shall be qualified by the relevant national product quality supervision and inspection and inspection unit, and obtain the country's corresponding licensed or approved product", which is effective in controlling the product quality in the gas alarm control system. means.

Second, the principle that should be followed when choosing Multi Gas Detector:

1. The corresponding Multi Gas Detector should be selected according to the gas type;

2. The corresponding gas detectors should be selected according to the gas leakage and gas incomplete combustion in the gas appliance and gas equipment environment;

3. Gas detectors are divided into single and Multi Gas Detector, which can be selected according to specific conditions. The Multi Gas Detector can have multiple forms of methane, carbon monoxide composite detectors, and methane, carbon monoxide, and temperature compound detectors.

3. The service life of gas detectors and emergency shut-off valves is specified. Among them, domestic gas detectors have a good quality of life of 5 years in the world. Emergency shut-off valve The longest life span in the world is 10 years due to the life of internal rubber seals. Therefore, these two indicators can be understood as the replacement cycle. Gas detectors for commercial and industrial companies have different life spans due to the different types of sensors used. The state stipulates that such products should be checked once a year. Therefore, it should be no less than three years and avoid frequent replacement.