How to troubleshoot common faults of combustible gas detectors?
Combustible gas alarm is one of the commonly used safety detection instruments in chemical, steel, smelting, gas, petroleum, coking and other industries. It is an instrument used to detect gas leaks in places where combustible gas exists. However, combustible gas alarms will inevitably have some failures during use. So how to troubleshoot common failures of combustible gas alarms?
1. Combustible gas alarms that use constant voltage bridge power supply may sometimes cause zero point drift and errors due to the influence of temperature. At this time, the fault can be eliminated by using the constant current bridge method.
2. The impact of high concentration of combustible gas may also cause the unbalanced output of the bridge of the combustible gas detector to cause zero point drift. At this time, the zero-adjustment circuit of the control unit can be used to process the problem to zero output. If the problem still cannot be solved, the detection sensor assembly should be replaced and repaired if necessary.
3. Zero point drift may sometimes be caused by the accumulation of dirt on the rain cover of the gas alarm, the detector probe, etc. At this time, the dirt should be cleaned to avoid residual solvent. But remember not to use solvents such as gasoline and acetone for cleaning. If the rain cover is damaged, it should be replaced in time.
4. For combustible gas alarms installed in places with dripping, drenching, spilling and splashing, the installation environment should be improved. After its own explosion-proof facilities are damaged, it is even more necessary to promptly replace and repair it to ensure that the flammable gas alarm can operate normally.
The above common faults on how to troubleshoot combustible gas alarms are shared here. Combustible gas alarms are common safety protection products on the market. They are of great help in preventing problems before they occur and avoiding damage to people and property. Therefore, choosing the appropriate flammable gas alarm is very important for users.
