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热敏电阻是一种对温度变化极其敏感的半导体电阻元件,在我国工农业生产的各个领域里,已被广泛用于测量温度、湿度、风速和流速等。热敏电阻的结构有直热式和旁热式、璃璃外壳和金属外壳,其形态有片状、杆状和珠状三种。 近几年来,我们在东北大兴安岭多年冻土地区,进行铁路工程冻土科研工作中,逐步推广采用热敏电阻测温。它与玻璃温度计相比,有如下优点:l.测温的适应性强,可
Thermistor is a kind of semiconductor resistance element which is extremely sensitive to temperature change. It has been widely used in measuring temperature, humidity, wind speed and flow rate in all fields of industrial and agricultural production in our country. Thermistor structure has a direct thermal and side heating, glass and metal shell, the shape of a sheet, rod and bead three. In recent years, in the permafrost areas in the Greater Hinggan Mountains in the northeast, we have been promoting the use of thermistor temperature measurement in the research work on the frozen soil of railway projects. Compared with the glass thermometer, it has the following advantages: l temperature adaptability, can be