Selection and use of harmful gas detectors
Choosing the appropriate gas detector for various production scenarios and testing requirements is something that every person engaged in safety and hygiene work must pay great attention to.
1. Reference factors for selecting gas detectors:
Confirm the type and concentration range of the gas to be detected: The gas types 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 a methane detection alarm is undoubtedly more appropriate. This is not only because the methane detection alarm is easy to use and widely applicable, but also because it has the characteristics of convenient maintenance and calibration. If there are toxic gases such as carbon monoxide and hydrogen sulfide, a specific gas detector should be prioritized to ensure the safety of workers, such as carbon monoxide detectors, hydrogen sulfide detection alarms, etc. A composite gas detector may achieve twice the result with half the effort, such as a methane oxygen dual parameter alarm.
The most popular choice in the coal mining industry nowadays should be portable gas detectors. Due to their easy operation, compact size, and portability to different production sites, electrochemical detectors are powered by alkaline batteries 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.
If this type of instrument is used as a safety alarm in an open environment, such as an open workshop, a portable gas detector can be used because it can continuously, real-time, and accurately display the concentration of toxic and harmful gases on site. Some of these new instruments are also equipped with vibration alarm attachments - to avoid audible alarms in noisy environments, and computer chips are installed to record peak values, STEL (15 minute short-term exposure level), and TWA (8-hour statistical weighted average) - providing specific guidance for worker health and safety.
