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中文摘要：
介绍了用于低温测量的单点热敏电阻温度传感器及多点测温电缆的结构和使用特点.将2003年埋设在青藏高原冻土区某测温孔的一根测温电缆于2010年取出,在实验室重新进行温度标定试验.为了保证2003年和2010年标定时的条件完全相同,并将2010年标定时的温度点设置成与2003年标定时的完全一致.利用2003年的标定系数和2010年标定时得到的电阻值反算温度值、并与标定温度值对比,发现8个温度传感器的温度漂移均为正漂移,最大值为0.032℃,年漂移最大值为0.0046℃,低于热敏电阻温度传感器本身的测温精度值0.05℃,从而验证了SKLFSE-TS型热敏电阻温度传感器以及用其制作而成多点测温电缆的长期稳定性.
英文摘要：
In this paper,the thermometric thermistor sensor SKLFSE-TS for single-point and multiple-point temperature monitoring is described in detail.One thermometric system including eight sensors was put into a borehole in 2003,and then taken out and re-calibrated in laboratory at August,2010.The calibration device and calibration temperatures of the sensors in first calibration and re-calibration are completely the same.Then,the inverse calculation temperature can be obtained using the resistance values at 2010 and calibration coefficient at 2003 for each temperature sensor.A temperature drift between the first calibration and the re-calibration is found.The temperature drift values of all sensors are positive,with a maximum of 0.032 ℃,which is lower than the precision of the sensor,0.05 ℃.Thus,the long-term stability of thermistor sensor SKLFSE-TS used in permafrost regions is qualified.
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