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目前,在钻孔中测量地温常用的仪器有最高温度计、电阻温度计、电子温度计等。最高温度计精度不高,不耐高压,已不常用。电子温度计精度高,但设备复杂。热敏电阻测温仪设备简单,操作方便,精度较高,能满足矿区测量地温的要求。一、热敏电阻测温仪原理这种仪器的感温元件是一种由锰、镍、铜和铁的氧化物混合制成的热敏电阻。它的温度
At present, commonly used instruments for measuring ground temperature in drilling are the highest thermometer, resistance thermometer, electronic thermometer and the like. The highest thermometer accuracy is not high, impatience high pressure, has not commonly used. Electronic thermometer with high precision, but the equipment is complicated. Thermistor thermometer equipment is simple, easy to operate, high accuracy, to meet the requirements of the geothermal field measurement. First, the thermistor thermometer principle The temperature sensing element of this instrument is a kind of thermistor made of manganese, nickel, copper and iron oxide mixture. Its temperature