计量学报2025，Vol.46Issue(4)：548-554,7.DOI:10.3969/j.issn.1000-1158.2025.04.12
镓熔点至铟凝固点温度范围线性内插方程的探索与不确定度分析
Exploration and Uncertainty Analysis of Linear Interpolation Equation in the Temperature Range from the Melting Point of Gallium to the Freezing Point of Indium
兰康 1方立德 1赵晶2
作者信息
- 1. 河北大学,河北 保定 071002
- 2. 中国测试技术研究院,四川 成都 610021
- 折叠
摘要
Abstract
Based on Matheson's rule,the temperature scale linear interpolation equation from the melting point of gallium to the solidification point of indium was derived.According to the Guide to the Realization of the ITS-90,the uncertainty of this linear interpolation was analyzed and verified,and the inconsistency of the interpolation equation was calculated using calibration data from 47 high-quality standard platinum resistance thermometers.Conduct experiments using 4 standard platinum resistance thermometers and calculate type 3 non-uniqueness.The experimental and computational results show that the average maximum value of inconsistency in the overlapping temperature zone is 0.26 mK,with an average standard deviation of 0.28 mK;Type 3 non-uniqueness of this interpolation is 0.16 mK.The propagation uncertainty is 0.33 mK.The combined uncertainty is 0.43 mK.The linear interpolation equation is simple,accurate and has good reproducibility.The present study also finds out that the measurement uncertainty of the triple point of water do not affect this linear equation..关键词
温度计量/90国际温标/内插方程/马西森定则/标准铂电阻温度计Key words
temperature measurement/ITS-90/interpolation equations/Matthiessen's rule/standard platinum resistance thermometer引用本文复制引用
兰康,方立德,赵晶..镓熔点至铟凝固点温度范围线性内插方程的探索与不确定度分析[J].计量学报,2025,46(4):548-554,7.
