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SF6安全保障专家
专注于SF6气体检测的专业化
SF6 (sulfur hexafluoride) gas sensor market analysis
发布时间：2016-03-10
来源：ydlcb 浏览次数：37次
As a greenhouse gas, sulfur hexafluoride has strong absorption characteristics for specific bands of infrared light, high sensitivity, is not affected by the environment and interference, no other gas interference, while the environmental temperature and humidity changes brought about by the detection error is small, will not produce false alarms, infrared sulfur hexafluoride sensor life of up to 10 years. Because it adopts the principle of active extraction of gas at the test point, the effect is that the leak is found early and the reaction is rapid. At the same time, the system structure also brings great convenience to the wiring in the project implementation.
Compared with the electrochemical principle, this infrared principle of sulfur hexafluoride sensor has the following advantages: infrared sulfur hexafluoride sensor than electrochemical sulfur hexafluoride sensor Advantages: In the power industry is commonly used in the digital amount of sulfur hexafluoride sensor model: SM-sulfur hexafluoride. At present, some power service providers are still using the electrochemical principle of sulfur hexafluoride sensor, but this sulfur hexafluoride sensor can not meet the power industry's low range of sulfur hexafluoride test, such as 0-50PPM, and 0-3000PPM, but the infrared principle of sulfur hexafluoride sensor can be customized to these ranges.
According to market forecasts, the domestic annual demand for intelligent sulfur hexafluoride sensors is about 500,000, and most of the current domestic sulfur hexafluoride sensor products are foreign imports.
Sulfur hexafluoride gas is not a halogen gas, we know that halogen intergroup gases include fluorine gas: yellowish-green, chlorine gas: yellowish-green, bromine vapor: reddish-brown, iodine vapor: purple. However, sulfur hexafluoride gas molecules are stable, so it is generally not easy to decompose. The methods used to detect fluorine and chlorine are not sufficient. The principle of electrochemical technology is that the detected gas is exposed to the surface of the catalyst at a high temperature of about 200°C, and the corresponding chemical reaction occurs with it, resulting in changes in electrical signals, so as to discover the detected gas.