& nbsp; & nbsp; & nbsp; & nbsp; As the name implies, the four-in-one gas detector is a measuring instrument used to detect the concentration of gas leakage. It mainly uses gas sensors to detect the composition and content of gas in the environment. For all kinds of different production occasions and testing requirements, choosing the right gas detector is every person engaged in safety and testing work must pay great attention. The four-in-one gas detector is an instrument for detecting the concentration of gas leakage. It is not only necessary to consider the gas detected at the time of purchase, but also other aspects.

1. Confirm the type and concentration range of the gas to be tested.

If most of them are methane and other low-toxic alkanes, choose a gas detector. The detector has simple principle, wide application, simple maintenance and calibration. If toxic gases such as carbon monoxide and hydrogen sulfide are present, a gas detector corresponding to the gas to be detected is preferably selected. For organic toxic and harmful gases (such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia, ethers, alcohols, fats, etc.), light ion detectors can be selected. When the gas type covers several gases, it is best to choose a composite gas detector.

2, the use environment of the gas detector

an open occasion, A portable gas detector that continuously displays the concentration of toxic and harmful gases in real time and accurately can be used. Usually equipped with vibration alarm or light alarm accessories to prevent the sound can not be heard in a noisy environment, and install a computer chip that records information such as peaks to provide specific guidance for the health and safety of workers.

If you enter a confined space such as oil storage tanks or containers, sewers or other underground pipelines, underground facilities, farmland, railway tankers, cargo holds, tunnels, etc., before people enter, they must be inspected and outside the confined space Check. At this time, it is best to choose a multi-gas detector with a sampling pump. The four-in-one gas detector, which can be installed in a single device, is characterized by small size, light weight, fast response and display of multiple gas concentrations.