& nbsp; & nbsp; & nbsp; & nbsp; When we buy anything, we will first understand and then buy it, because only if we know enough, the things we buy can play its best role, so how should we choose the right gas detector?

& nbsp; & nbsp; 1. to understand their own needs to choose a gas detector to clearly detect what gas? In what environment? Portable or fixed? and other incidental functions. These reasons usually have to be considered. Otherwise, it will appear that the result of the original plan to buy an oxygen detector has bought an ozone detector, which will make a big mistake. Without delay, it will also cause unnecessary economic losses.

& nbsp; & nbsp; & nbsp; & nbsp; 2. understand the working conditions of the operating environment. All kinds of gas detectors have strict requirements on the on-site environment. Generally speaking, the temperature is -20~50 ℃, the humidity is 0-95% RH, the pressure is 80-120Kpa, etc, contains dust, flow, etc. have strict requirements. Due to other impurities in the environment will have a huge impact on the detection results, resulting in unforeseen losses. At the same time, understand the working conditions of the site and supply the information to the manufacturer in time, and the manufacturer will have corresponding plans to deal with it.

& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; There are mandatory requirements such as explosion-proof on the site where the gas detector is installed and used, provided that the safety situation on the site is 3. known.The coal, petroleum and chemical industries are very strict with explosion-proof requirements, requiring their own explosion-proof instruments with explosion-proof certification. Other environments may require gas detectors to have environmental certification or metering appliance license and other qualifications.

& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 4. understand the functional requirements of the application. The general functions of the gas detector are to detect the gas concentration and alarm exceeding the standard. But many customers need more than just these features. Signal output is on the one hand, it is necessary to need current output, digital signal output, voltage output and switch output. There may be other special requirements such as network interfaces and wireless signals. At the same time, data recording and processing are also more common requirements.

& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 5. understand the sensor origin Many gas detector manufacturers have sensors that are nominally foreign, but they are not. Some use domestic sensors to fake imported sensors to pit customers. When you encounter this kind of situation, you should carefully check the product information and sign a purchase and sale contract when necessary to ensure your rights and interests.