Causes of failure of combustible gas detectors and solutions
Comprehensive combustible gas detector failure causes, not to exclude two points: the construction process is not standardised and maintenance is not done. Both of them are the possible factors that lead to the failure of combustible gas detectors. Construction process is not standardised in the use of combustible gas detectors to detect faults. Such as combustible gas detector is not located in the equipment is easy to leak combustible gases near, or installed with the exhaust fan adjacent to the set, the leakage of combustible gases can not be sufficiently diffused to the combustible gas detector near, so that the leakage of dangerous situations can not be detected in time by the combustible gas detector.
In residential combustible gas detector should be installed in the kitchen gas piping, cooker nearby, when households use natural gas, gas detector suction ceiling installation from the ceiling within 300mm of the place; when households use liquefied petroleum gas, the gas detector should be installed from the ground within 300mm of the place. Combustible gas detector is not reliable grounding, can not eliminate electromagnetic interference, will affect the voltage, the detection data is not allowed to appear fault.
Therefore, the combustible gas detector should be reliably grounded during construction. Combustible gas detector and terminal set in easy to suffer collision or easy to enter the water, resulting in electrical circuit breakage or short circuit. Welding must use non-corrosive flux, otherwise the joints corrode off or increase line resistance, affecting the normal detection. Do not drop or throw the detector to the ground. Debugging should be carried out after construction to ensure that the combustible gas alarm is in normal working condition.
Maintenance of combustible gas detector is also very important. Because of the combustible gas detector working environment is relatively harsh, there are many installed in the outdoors, often subject to a variety of dust and contaminating gases attack, combustible gas detector to detect combustible gas information, must make the detector and detection of the environment communication, so the environment of a variety of contaminating gases and dust into the detector can not be avoided, and its detector caused by the damage to the working conditions of the existence of the objective, if you do not pay attention to maintenance, will make the combustible gas alarms in normal working condition. If you do not pay attention to the maintenance, will make the combustible gas alarm detection is hindered, thus leading to errors or non-detection of the situation. Therefore, regular cleaning and maintenance of the combustible gas detector is an important task to prevent malfunction.
Another thing to note is that the grounding should be regularly tested, grounding is not up to the standard requirements, or not grounded at all, will also make the combustible gas detector susceptible to electromagnetic interference, resulting in failure. Prevent the aging of components. From the reliability considerations, while practice has proved that combustible gas detector service period of more than 10 years of the system by the aging of the components caused by the failure tends to increase, so the service period of more than the use of the requirements of the regulations, should be replaced in a timely manner.
