How to choose a suitable gas alarm?

With the increasing number of unexpected situations in society, gas alarms have become a part of daily life. So, what methods can we use to select gas alarms? Below are some examplesHuiruipuIntroducing to you:
We should be aware of the types of gas alarms specified by national standards. Gas alarms can be divided intoportableflammable gasdetectionInstrument,wall-mountedflammable gascall the policeEquipment*threeLarge series of products.
detectionThe instrument has a small volume and can be carried around or handheld. It is primarily used for leak detection and line inspection in gas processing. If there is a gas leak,detectionThe instrument will announce an audible and visual alarm, and display the gas concentration digitally, in order to take timely safety measures and avoid the occurrence of malignant accidents such as explosions.
Selection method:
1. Clear detection purposes, selection of instrument types, portable detectors and fixed detectorscall the policedevice
2. Select gas alarm category
In short, the detection of harmful gases has two purposes: to detect explosions and to detect toxins. The so-called explosion testing is to detect the combustible gas content in high-risk areas, issue an alarm for overspending, and prevent the occurrence of explosion incidents; Poison testing is to detect the content of all toxic gases in the risk field, and to trigger an alarm for exceeding the limit, in order to prevent staff from being poisoned. The scale of explosive testing is 0~LEL, and the scale of toxin testing is 0~tens (or hundreds) ppm, with a significant difference between the two.
There are three types of harmful gases in high-risk areas: non-toxic (or low toxicity) and flammable, non flammable and toxic, and flammable and toxic. The first two situations are easy to determine: explosion testing, second toxicity testing, and third situation. If there are personnel exposed for toxicity testing, explosion testing can be conducted if there are no personnel exposed.
Choose combustible gas detectors for explosion testing and toxic gas detectors for toxicity testing.
Fixed alarm devices are used for leak detection during long-term operation of production or storage positions; Portable instruments are used for other purposes such as maintenance testing, emergency testing, entry testing, and patrol testing.
3. Clearly detect the target and select the optimal instrument type
The instrument type includes three main contents: manufacturer, functional objectives, and detection principle. The detection principle of gas alarms should be accustomed to the requirements of the detection target and detection environment.