How to choose the right Gas Detector

This is NBCHAO Mall. In this issue, I will introduce the selection of Gas Detectors. The Gas Detector is mainly used to detect whether there is a specific gas and gas concentration in a certain area. Generally, it is widely used in petrochemical, municipal, environmental protection agencies, family safety and other protection aspects. Gas Detectors, from the type point of view, can be divided into desktop, portable, fixed or online. Different types can be used in different environments.

General Gas Detectors can detect dozens of gases such as hydrogen sulfide, carbon monoxide, oxygen, combustible gas, ammonia, carbon dioxide, sulfur oxide, ozone, etc. They use different methods, such as diffusion type, pump suction type, There are several types of circulation. General gas sensors use the principles of electrochemical, infrared, ultraviolet, thermomagnetic, semiconductor, and catalytic combustion gas.

With the development of Gas Detectors, there are many imported and domestic brands. Some of them measure a single gas, and some of them measure multiple gases. Let's take hydrogen dioxide as an example. The Gas Detector that only detects carbon dioxide can reach hundreds of Ppm in general range. For example, some Gas Detectors may be relatively small, they can measure 0 to 30pm, some can measure 0 to 100ppm, and most of them can measure 0 to 500ppm. In terms of detection resolution, the relatively high ones are 0.01ppm, generally 0.1ppm, and 1ppm. Generally, Gas Detectors will have some alarm functions. The alarm methods can be divided into light alarm, sound alarm, vibration alarm, etc.

In addition, the service life of the gas plus difference sensor can generally reach 24 months, and it can reach 3-5 years better.

The installation methods of Gas Detectors can be roughly divided into several types: fixed brackets and tube installations. Wall mounted and handheld.

General Gas Detectors have a recovery time, which is about ten to 20 seconds. A little longer to 30~50 or even more than 100 seconds.

The domestic standards of Gas Detectors are mainly based on GB15322, GB3836, and GB16808.