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787型井温仪是为适应目前煤田地质勘探钻孔中的地温测量工作而研制的一种半导体热敏电阻测温仪器。它具有结构简单、操作方便、精度较高等特点,能满足目前地质勘探中地温测量工作的需要。同时,它也可以做为一般的温度测量仪器。测温原理 787型井温仪的感温元件是一种由镉、镍、铜和铁的氧化物混合而成的半导体热敏电阻,型号为RRC_7B,其电阻值有随温度而变化的特性,关系式是:
787-type well temperature instrument is to adapt to the current geological exploration drilling in the coal ground temperature measurement work developed a semiconductor thermistor temperature measuring instrument. The utility model has the characteristics of simple structure, convenient operation and high precision, and can meet the needs of geothermal surveying work in geological exploration at present. At the same time, it can also be used as a general temperature measurement instrument. Temperature measurement principle 787 temperature sensor temperature sensing element is a kind of semiconductor thermistor made of cadmium, nickel, copper and iron oxide mixture, the model is RRC_7B, the resistance value has the characteristics of temperature changes, The relationship is: