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本发明涉及可燃气体传感器,特别是对热线型可燃气体传感器。当不同浓度的可燃气体通过它时,由于氧化反应所放出的热量不同,使传感器热线元件的电阻值发生变化。这种传感器通常用热线元件组成桥路,电桥的平衡是随着热线元件阻值而变化的,从而指示出被测可燃气体的浓度。这种热线型传感元件,可以是裸丝型的,也可以是由埋在陶瓷小珠体内的热线圈所成。不过,后者应用普遍,因为它使热线
The present invention relates to combustible gas sensors, particularly to hot line combustible gas sensors. When different concentrations of combustible gas through it, due to the oxidation reaction of the heat released by different, so that the sensor hot wire element resistance changes. Such sensors usually consist of a bridge with hot-wire components that vary with the resistance of the hot-wire components to indicate the concentration of the combustible gas to be measured. This hot wire type sensing element can be bare wire type, it can also be buried in the ceramic beads made of heat coil. However, the latter is common as it makes the hotline