低温校准装置导热介质对校准结果的影响研究

Research on the effect of heat-conducting medium on calibration results of low temperature calibration device

中文关键词: 温度传感器、低温、校准

英文关键词: temperature sensor,low temperature,calibration

中文摘要:

      针对低温校准装置中导热介质对校准结果的影响进行了研究，介绍了研制的低温传感器校准装置，分析了低温温度传感器的校准装置中传感器与恒温块之间空气间隙大小对校准结果的影响，以及向缝隙中填充不同导热介质对低温校准结果的影响，理论分析了产生误差的原因并通过实验给出了其校准不确定度。针对存在的问题给出了合理建议和解决方法，优化校准方案，给出了减小低温校准装置校准不确定度的方法。

英文摘要:

      The influence of heat-conducting medium on calibration results in low temperature calibration device is studied, it introduced the production of low temperature sensor calibration device, it analyzed the influ-ence of the air gap between the low temperature sensor and the constant temperature block on the cali-bration results and the effect of filling the gap with different thermal conductivity medium on low tem-perature calibration results, the reason of error is analyzed theoretically, and the calibration uncertainty is given by experiment. In view of the existing problems, reasonable suggestions and solutions are giv-en, the calibration scheme is optimized, a method to reduce the calibration uncertainty of low tempera-ture calibration device is presented.