How to choose a suitable toxic and harmful gas detector
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 appropriate. 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. If there are more organic toxic and harmful gases, considering their low concentration that may cause poisoning to personnel, such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amines), ethers, alcohols, lipids, etc., the photoionization detector introduced in the previous chapter should be chosen instead of using LEL detectors, as this may result in casualties.
How to choose a suitable toxic and harmful gas detector if the gas types cover the above categories
For various production scenarios and testing requirements, choosing the appropriate gas detector is something that every person engaged in and testing work must pay great attention to. Here we will introduce some specific situations for your reference.
2) 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 the most 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. If there are more organic toxic and harmful gases, considering their low concentration that may cause poisoning to personnel, such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amines), ethers, alcohols, lipids, etc., the photoionization detector introduced in the previous chapter should be chosen instead of using LEL detectors, as this may result in casualties.
Portable gas detector: Due to its convenient operation and compact size, it can be carried to different production sites. The electrochemical detector is powered by an alkaline battery and can be used continuously for 1000 hours; The new LEL detectors, PID and composite instruments use rechargeable batteries (some have already adopted memory free nickel hydrogen or lithium-ion batteries), which allow them to work continuously for nearly 12 hours. Therefore, as such instruments are increasingly being used in various factories and health departments.
