What are the functions and usage 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 during the use of 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 paths through which the electromagnetic environment affects combustible gas alarms:
(1) Airborne electromagnetic wave disturbance;
(2) Narrow pulse groups on power and other input/output lines;
(3) Human 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 choose explosion-proof combustible gas alarms, and their explosion-proof level should not be lower than the corresponding explosion-proof level requirements of the current standard.
Users should also pay attention to avoiding areas with high temperature, 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 should try to choose products with replaceable sensor probes when using combustible gas alarms, in order to facilitate their use.
The combustible gas detector should be reliably grounded during the construction process. Welding must use non corrosive flux, otherwise corrosion and detachment at the joint or adding line resistance will affect normal detection. The detector cannot fall or be thrown onto the ground. After construction, debugging should be carried out to ensure that the combustible gas alarm is in normal operating condition. Regular cleaning and maintenance of combustible gas detectors is an important task to avoid malfunctions.
Grounding should be tested regularly. If the grounding is not up to standard or the foundation is not grounded, it can also cause electromagnetic interference to the combustible gas detector, leading to problems. 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 additional defects caused by component aging. Therefore, if the service life exceeds the requirements of the application rules, it should be replaced in a timely manner.
