Analysis of the most common failures of fixed gas detection systems
With the rapid development of industry, there are more and more places where humans are exposed to harmful gases, which causes greater and greater harm to humans themselves. Poisoning accidents have made people clearly realize that while developing industry, The importance of protecting human safety. Therefore, alarms and detectors have gradually become the most important protective equipment in industrial safety production.
Fixed gas detector is a common type of gas detector. It mainly consists of two parts: a controller and a gas detector. Only by installing these two parts correctly can it ensure its normal operation.
Common faults of fixed gas detectors are mainly caused by improper use by users, lack of understanding of detector performance, improper equipment selection, failure by users to construct according to specifications, and insufficient maintenance. The following mainly analyzes the reasons why users experience failures when using combustible gas detectors, and also proposes how to use combustible gas detectors correctly to minimize the occurrence of gas alarm failures.
1. Improper use by users
When users of gas alarms use gas detectors, they install air conditioning and heating equipment close to the combustible gas detector. When using air conditioning and heating equipment, if the cold or warm air flows directly past the combustible gas alarm, it may cause The resistivity of the combustible gas alarm changes and errors occur. Therefore, the combustible gas alarm should be kept away from air conditioning and heating equipment to avoid malfunction caused by improper location.
2. Irregular construction process
If the construction process is not standardized, the flammable gas detector may malfunction during use. If the flammable gas detector is not located near the equipment that is prone to leaking flammable gas, or is installed adjacent to the exhaust fan, the leaked combustible gas cannot fully diffuse to the vicinity of the flammable gas detector, thereby preventing the leakage from being flammable in time. Sexual gas detector detection.
If the flammable gas detector is not grounded, it will not be able to eliminate electromagnetic interference, which will inevitably affect the voltage and cause inaccurate detection data. Therefore, the flammable gas detector should be reliably grounded during construction. Combustible gas alarms and wiring terminals are installed in places that are prone to collision or water intrusion, causing electrical circuit breakage or short circuit. Welding must use non-corrosive flux, otherwise the joints will be corroded and disengaged or the circuit resistance will increase, affecting normal detection. Do not drop or drop the detector to the ground. After construction is completed, debugging should be carried out to ensure that the combustible gas alarm is in normal working condition.
3. Maintenance
To detect the concentration of combustible gas, the combustible gas detector 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 to the working conditions of the detector is Objectively speaking, the working environment of combustible gas detectors is relatively harsh, and many of them are installed outdoors. Improper maintenance will lead to errors in the detection of flammable gas alarms or no detection.
Regular cleaning and maintenance of flammable gas detectors is an important task to prevent malfunctions. Grounding should be checked regularly. If the grounding does not meet the standard requirements or is not grounded at all, the flammable gas detector will be susceptible to electromagnetic interference and cause malfunctions.
The fixed gas detector is a new type of intelligent industrial gas analysis developed using electrochemical or magnetic oxygen detection principles and using imported electrochemical or magnetic oxygen sensors combined with new single-chip microcomputer technology. Different types of sensors are selected according to different usage requirements. .
