What are the functions of a gas alarm? How exactly should it be used?
Combustible gas detection alarm is to detect the air or operating environment in the gas content of the early warning device, to ensure the safe use of gas in all areas of society plays a vital role. As a safety-related common measuring instruments, for its purchase, installation, use, maintenance and other aspects of the need to pay attention to what issues? What are the common combustible gases?
Combustible gases are substances that can ignite and are gaseous at room temperature and pressure. For example, hydrogen, acetylene, ethylene, ammonia, hydrogen sulfide and so on. Combustible gases in the corresponding combustion medium, according to a certain proportion of the mixture, in the ignition source, can cause combustion or explosion.
Combustible gas detector is a safety protection measuring instrument, used to detect the presence of gas in the air or operating environment that can explode or burn in case of open flame and other unsafe factors. Combustible gas detectors include: 1. according to the detection principle: thermal conductivity, semiconductor, catalytic combustion and infrared absorption type; 2. according to the use of type classification: fixed combustible gas detector, portable combustible gas detector;
Fixed combustible gas detector is usually installed in the location where the combustible gas is easy to leak, and its core component is the gas sensor, which monitors the concentration of combustible gas in the air in real time. The detector converts the gas concentration detected by the sensor into an electrical signal, which is transmitted to the controller through a cable. The higher the gas concentration, the stronger the electrical signal. When the gas concentration reaches or exceeds the alarm point set by the alarm controller, the alarm will emit sound and light alarm signals and can start solenoid valves, exhaust fans and other outreach equipment to prevent accidents.
Portable combustible gas alarm is handheld, compact size, staff can carry with them. Applicable to atmospheric monitoring, environmental cleanliness monitoring, landfill monitoring, petrochemical, metallurgy, mining, confined space entry, rapid response to hazardous substances, industrial paint, leakage detection, indoor air quality IAQ monitoring and so on.
3. According to the use of the environment can be divided into: civil, commercial and industrial use of two kinds. Civilian combustible gas detectors are generally installed in residential homes to detect the concentration of natural gas, liquefied petroleum gas leakage; commercial and industrial combustible gas detectors are generally explosion-proof products for large-scale industry and commerce, such as petroleum, chemical industry, metallurgy, scientific research, large-scale supermarkets and other fields.
What kind of places are combustible gas detectors suitable for?
Generally speaking, combustible gas detectors should be installed in places where combustible gas leakage is likely to occur. Such as petroleum, chemical, metallurgy and other large industrial places; catering enterprises, school canteens, nine small places and other commercial places; libraries, museums, research institutes and other scientific research institutes; underground corridors, tunnels and other underground space; vegetable greenhouses, poultry and other agricultural places, all need to install combustible gas detectors, to effectively protect the people's lives and property safety.