Introduction to the Use of Combustible Gas Detectors
When installing a combustible gas alarm, keep it away from air conditioners and heating equipment to prevent faults caused by improper positioning.
Users shall also prevent electromagnetic interference during the operation of combustible gas detectors. Electromagnetic interference protection shall be considered for the installation position, mounting angle, protective measures and system wiring of combustible gas alarms.
There are three main paths through which the electromagnetic environment affects combustible gas alarms: (1) Interference from airborne electromagnetic waves; (2) Narrow pulse groups on power lines and other input and output cables; (3) Human body static electricity.
In addition, users shall pay attention to the arrangement of combustible gas detectors in explosion‑proof areas. For example, explosion‑proof combustible gas alarms shall be adopted for Class A workshops where combustible gases are released, and their explosion‑proof grade shall not be lower than the requirements specified in current standards.
Users shall avoid installing combustible gas detectors in areas exposed to high temperature, high humidity, steam and oil fume. Do not place or hang any objects on the detector.
The installed combustible gas detector shall not be moved arbitrarily. It is recommended that users select products with replaceable sensor probes for convenient application.
Reliable earthing is required during the construction of combustible gas detectors. Non‑corrosive soldering flux must be used for welding; otherwise, corrosion and disconnection at joints or increased circuit resistance will interfere with normal detection.
The detector shall not be dropped or thrown onto the ground. Commissioning shall be carried out after construction to ensure the combustible gas alarm works normally.
Regular cleaning and maintenance of combustible gas detectors are essential to prevent malfunctions.
Earthing conditions shall be inspected periodically. Unqualified earthing or missing earthing will make the combustible gas detector vulnerable to electromagnetic interference and lead to faults. Malfunctions caused by component aging should also be avoided.
From the perspective of reliability and practical experience, systems of combustible gas detectors with a service life exceeding 10 years show an increasing number of faults due to component aging. Therefore, equipment whose service life exceeds the specified requirement shall be replaced in a timely manner.
