低温温度传感器的整体分度和校准

The Integral Graduation and Calibration of Low Temperature Sensors

叙述了温度传感器整体分度和校准的必要性及低温温度传感器整体分度和校准的原理和方法。简单介绍了低温温度传感器校准装置，提出了测量校准装置温场均匀性和稳定性的办法。给出了初步实验结果：在ＬＮ２温区，温场的不均匀性和不稳定性都在１μＶ之内（相当于５０～６０ｍＫ）。

This paper describes the necessity of the integral graduation and calibration of temperature sensors. The principle,the method and the appa-ratus used for the integral graduation and calibration of low temperature sensor have been introduced. The method for measuring the stability and homogencity of the temperature field in this apparatus has been prouided,and the experiment results have been given。 In the temperature range of liquid nitrogen,the instability and inhomogencity are all less than 1μV (equ-ivalent to 50-60mK)。