Combustible gas detector malfunctions: causes and remedies
The reasons for the malfunction of the comprehensive combustible gas detector cannot be ruled out in two aspects: non-standard construction process and inadequate maintenance. Both have the possibility of causing the malfunction of the combustible gas detector. Non standardized construction processes can cause combustible gas detectors to detect faults during use. If the combustible gas detector is not located near the equipment where the combustible gas is easy to leak, or is installed adjacent to the Whole-house fan, the leaked combustible gas cannot be fully diffused near the combustible gas detector, so that the leakage danger cannot be detected by the combustible gas detector in time.
The combustible gas detector in residential areas should be installed near the gas pipeline and stove in the kitchen. When the household is using natural gas, the gas detector should be installed on the ceiling within 300mm from the ceiling; When households use liquefied petroleum gas, gas detectors should be installed within 300mm of the ground. If the combustible gas detector is not reliably grounded and cannot eliminate electromagnetic interference, it will inevitably affect the voltage and cause inaccurate detection data.
Therefore, the combustible gas detector should be reliably grounded during the construction process. The combustible gas detector and wiring terminals are located in areas prone to collision or water ingress, causing open or short circuits in electrical circuits. Welding must use non corrosive flux, otherwise the corrosion at the joint will detach or increase the line resistance, which will affect normal detection. Do not drop or throw the detector onto the ground. After construction, debugging should be carried out to ensure that the combustible gas alarm is in normal working condition.
The maintenance of combustible gas detectors is also important. Due to the harsh working environment of combustible gas detectors, many of them are installed outdoors and are often attacked by various dust and polluting gases. To detect combustible gas information, combustible gas detectors must communicate with the detection environment. Therefore, it is inevitable that various polluting gases and dust in the environment enter the detector, and the damage caused to the working conditions of the detector is objective, If maintenance and upkeep are not emphasized, the detection of combustible gas alarms will be hindered, resulting in errors or non detection. Therefore, regular cleaning and maintenance of combustible gas detectors is an important task to prevent malfunctions.
Additionally, it should be noted that grounding should be regularly tested. Failure to meet standard requirements or not grounding at all can also make combustible gas detectors susceptible to electromagnetic interference and cause malfunctions. Prevent aging of components. From the perspective of reliability, it has been proven in practice that systems with combustible gas detectors that have been in service for more than 10 years tend to experience an increase in failures caused by component aging. Therefore, if the service life exceeds the specified requirements, they should be replaced in a timely manner.
