methaneThe selection method of gas detector - see the recruitment of Huiruipu Company

1) Confirm the type and concentration range of the gas to be detected:

The types of gases encountered by each production department are different. When choosing a gas detector, all possible scenarios should be considered. If methane and other less toxic hydrocarbons are predominant, choosing an LEL detector is undoubtedly very suitable. This is not only because the principle of LEL detector is simple and widely used, but also because it has the characteristics of easy maintenance and calibration. If there are toxic gases such as carbon monoxide and hydrogen sulfide, it is necessary to prioritize the use of a specific gas detector to ensure the safety of workers.

2) Determine the usage scenario:

The selection of gas detectors varies depending on the industrial environment.

A)Fixed gas detector:

This is a commonly used detector in industrial equipment and production processes. It can be installed at specific detection points to detect specific gas leaks. Yiyang fixed detectors are generally two-piece, with a detection head composed of sensors and transmitters installed as a whole on the detection site, and a secondary instrument composed of circuits, power supplies, and display alarm devices installed as a whole in a safe place for easy monitoring. Its detection principle is as described in the previous section, but it is more suitable for the continuous and long-term stability required for fixed detection in terms of process and technology. They also need to be selected based on the type and concentration of the gas on site, and attention should be paid to installing them in specific areas where the gas may leak, such as selecting the effective height for sensor installation based on the specific gravity of the gas, and so on.

B)Portable gas detector:

Due to its convenient operation and compact size, the portable instrument can be carried to different production sites. The electrochemical detector is powered by alkaline batteries and can be used continuously for 1000 hours; Generally, it can work continuously for nearly 12 hours, so the application of such instruments in various factories and health departments is becoming increasingly widespread.

If this type of instrument is used as a safety alarm in an open environment, such as an open workshop, a portable diffusion gas detector can be used because it can continuously, real-time, and accurately display the concentration of toxic and harmful gases on site.

If entering a confined space, such as reaction tanks, storage tanks or containers, sewers or other underground pipelines, underground facilities, agricultural enclosed grain warehouses, railway tankers, shipping cargo holds, tunnels, etc., personnel must undergo testing before entering, and testing must be conducted outside the confined space. At this point, it is necessary to choose a multi gas detector with a built-in sampling pump.