Combustible gas detectors used in commercial and industrial settings are essential equipment for ensuring gas safety, and their service life is strictly regulated. According to the industry standard of the People’s Republic of China, Technical Specification for Urban Gas Alarm Control Systems, the typical service life of industrial combustible gas detectors is 3 years. This regulation is based on a comprehensive consideration of factors such as equipment performance degradation, technological updates, and safety requirements.
Why is the service life of combustible gas detectors for commercial and industrial use set at 3 years?
GB29837-2013 Maintenance and Disposal of Fire Detection and Alarm Products, Clause 4.2: The gas-sensitive element of combustible gas detectors should be replaced promptly upon reaching the service life specified by the manufacturer.
Why is it necessary to replace combustible gas detectors in a timely manner?
The gas sensor is the “heart” of the detector, and its service life is influenced by the following factors:
Sensor Type
Catalytic combustion sensors: The mainstream industrial sensors have a service life of 2–5 years, which is significantly affected by environmental humidity and gas concentration.
Infrared sensors: These can last 5–8 years but are more expensive and suitable for high-precision applications.
Environmental Conditions
High temperature, high humidity, and dusty environments can accelerate sensor aging. For example, cooking fumes in restaurants or corrosive gases in chemical workshops may reduce sensor life to less than 2 years.Frequency of Use
Frequent alarms (e.g., during gas leak testing) can accelerate sensor consumption. Some companies reduce testing to cut costs, but this may lead to accidents due to sensor failure, resulting in greater losses.As evident, detectors that have exceeded their service life may fail to accurately detect gas leaks and could even produce false alarms or miss actual leaks. Therefore, to ensure gas environment safety, companies must strictly adhere to regulations and promptly replace combustible gas detectors that have reached the end of their service life.
