LRD—1型瓦斯检定器应用热导原理,是在1971年我所与浙江奉化电子仪表厂协作生产的 KDD—1型瓦斯检定器的基础上,根据现场意见和要求进行研制的。它主要是将原有仪器的心脏部分——传感器的四个孔腔改为两个,从而使原来较难选配的四个热敏元件减少为两个,另两个则用固定电阻代替,这就大大简化了气室部分的制作工艺;同时又增加了温度补偿,使仪器零点漂移问 LRD-1 gas detector application of thermal conductivity principle is in 1971, I and Zhejiang Fenghua Electronic Instrument Factory collaborative production KDD-1-based gas detector, based on site comments and requirements for development. It is mainly the original part of the heart of the instrument - the sensor's four holes to two, so that the original difficult to match the four heat-sensitive components reduced to two, the other two are replaced by a fixed resistor, This greatly simplifies the gas chamber part of the production process; at the same time increased the temperature compensation, the instrument zero drift asked