Analysis of common faults of fixed gas detectors
With the rapid development of industry, there are more and more places where human beings come into contact with harmful gases, which causes more and more harm to human beings. Repeated poisoning accidents have made people soberly realize that while developing the 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, mainly composed of two parts: controller and gas detector. Correct installation of these two parts can ensure its normal operation.
The common faults of fixed gas detectors are mainly caused by improper use of the user, ignorance of the performance of the detector, improper selection of equipment, failure of the user to construct according to the specification requirements, and insufficient maintenance. The following mainly analyzes the reasons for the failure of the user to use the flammable gas detector, and proposes how to use the flammable gas detector correctly to minimize the occurrence of gas alarm failures.
1. Improper use by users
When the user of the gas alarm uses the gas detector, install the air conditioner and heating equipment close to the combustible gas detector. When using the air conditioner and heating equipment, if the cold and warm air flows directly through the combustible gas alarm, it may cause There is an error in the change of the resistivity of the combustible gas alarm, so the combustible gas alarm should be kept away from air conditioners and heating equipment to avoid malfunction caused by improper location.
Second, the construction process is not standardized
The non-standard construction process will cause the flammable gas detector to detect faults during use. If the combustible gas detector is not installed near the equipment that is prone to leaking combustible gas, or is installed adjacent to the exhaust fan, the leaked combustible gas cannot fully diffuse to the vicinity of the combustible gas detector, so that the dangerous leakage cannot be detected in time by the combustible gas detector. 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 the construction process. The flammable gas alarms and wiring terminals are located in places prone to collision or water entry, resulting in open circuit or short circuit of electrical circuits. Welding must use non-corrosive flux, otherwise the joints will be corroded and detached or the line resistance will increase, which will affect the normal detection. Do not drop or drop the detector on the ground. After construction, debugging should be carried out to ensure that the combustible gas alarm is in normal working condition.
3. Maintenance
In order to detect the concentration of combustible gas, the detector must communicate with the detection environment, so it is unavoidable for various polluting gases and dust in the environment to enter the detector, and the damage to the working conditions of the detector is Objectively, the working environment of flammable gas detectors is relatively harsh, and many are installed outdoors. Poor maintenance will lead to errors or no detection of flammable gas detectors.
Regular cleaning and maintenance of the combustible gas detector is an important task to prevent failures. The grounding should be checked regularly. If the grounding fails to meet the standard requirements, or is not grounded at all, the flammable gas detector will also be susceptible to electromagnetic interference and cause failure.
The stationary gas detector is a new type of intelligent industrial gas analysis developed by using the principle of electrochemical or magnetic oxygen detection, using imported electrochemical or magnetic oxygen sensors combined with new single-chip technology, and selecting different types of sensors according to different use requirements. .
