What are the functions and precautions of combustible gas detectors?
When installing combustible gas alarms, they should be kept away from air conditioning and heating equipment to avoid problems caused by improper orientation. Users should also pay attention to preventing electromagnetic interference when using combustible gas detectors. The orientation, viewpoint, protective measures, and system wiring of the combustible gas alarm device should be protected against electromagnetic interference. There are three main pathways through which the electromagnetic environment affects combustible gas detectors:
(1) Airborne electromagnetic wave disturbance;
(2) Narrow pulse trains on power and other input/output lines;
(3) Human body static electricity.
Other users should also pay attention to the setting of combustible gas detectors in explosion-proof places. For example, Class A factories that emit combustible gases should use explosion-proof combustible gas alarms, and their explosion-proof level should not be lower than the corresponding explosion-proof level requirements of current standards.
Users should also pay attention to avoiding areas with high temperature, high humidity, steam, and oil fumes when using combustible gas detectors. Do not place or hang items on the detector. The installed gas detector cannot be moved arbitrarily. Users using combustible gas alarms should try to choose products with replaceable sensor probes for ease of use.
The combustible gas detector should be reliably grounded during the construction process. Non corrosive soldering flux must be used for welding, otherwise the joint will corrode and detach, or adding line resistance will affect normal detection. The detector cannot fall or be thrown to the ground. After construction, debugging should be carried out to ensure that the combustible gas alarm is in normal working condition. Regularly cleaning and maintaining combustible gas detectors is an important task to avoid malfunctions.
Grounding should be checked regularly. If the grounding is not up to standard or the substrate is not grounded, it can also cause electromagnetic interference and malfunction of the combustible gas detector. Avoid problems caused by component aging. From the perspective of reliability, practice has also confirmed that systems with a service life of more than 10 years for combustible gas detectors tend to have more problems caused by component aging. Therefore, if the service life exceeds the requirements of the application rules, it should be replaced in a timely manner.
