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一简介本文概要地介绍纯度较低的工业用低温铂电阻温度计的两点标定。在20~90K 范围内,用50K 和90K 两点标定时,骨所介绍的经验公式的适应性,并且探讨一种降低误差的数据处理方法。根据实验数据分析,对于纯度在1.3899~1.3910内的低温铂电阻温度计,经验公式的适应性较差,以至在20K 点上分度计算值与实测值的偏差达到1K 左右,但
I. INTRODUCTION This paper presents a brief overview of the two-point calibration of low-purity industrial low-temperature platinum resistance thermometers. In 20 ~ 90K range, with 50K and 90K calibration of two points, the experience of bone introduced the adaptability of formulas, and to explore a data processing method to reduce errors. According to the experimental data analysis, for the low temperature platinum resistance thermometer with the purity of 1.3899 ~ 1.3910, the empirical formula has poor adaptability, and even the deviation between the calculated value and the measured value at 20K point reaches about 1K,