基于ITS-90温标精密铂电阻温度计非定义固定点温度比较法校准探究  

Calibration of precision platinum resistance thermometer based on non-defined fixed point temperature comparison method of ITS-90 temperature scale

作　　者：王建雷 栾海峰 刘虎生 刘晓辉 谢业雷 WANG Jianlei;LUAN Haifeng;LIU Husheng;LIU Xiaohui;XIE Yelei(Jiangsu Institute of Metrology Jiangsu Energy Measurement Data Center,Nanjing 210023,China)

机构地区：[1]江苏省计量科学研究院江苏省能源计量数据中心,江苏南京210023

出　　处：《工业计量》2025年第1期13-16,20,共5页Industrial Metrology

基　　金：江苏省市场监督管理局科技项目(KJ2023020)。

摘　　要：目前常用的精密铂电阻温度计校准方法是定点法,即使用温度固定点装置在各定义温度固定点进行校准并计算获得ITS-90温标系数。定点法校准成本较高且操作相对繁琐。文章旨在探究在-80~300℃运用比较法在非定义固定点温度校准精密铂电阻温度计的可行性与可靠性,在降低校准成本的同时提升校准效率。At present,the commonly used calibration method of precision platinum resistance thermometer is fixed point method,that is,the temperature fixed point device is used to calibrate at each defined temperature fixed point then calculate the ITS-90 temperature scale coefficient.The fixed point method is expensive and cumbersome.The purpose of this paper is to explore the feasibility and reliability of calibration of precision platinum resistance thermometers at non-defined fixed point temperatures at-80~300℃by using comparative method,so as to reduce calibration costs and improve calibration efficiency.

关 键 词：计量学 ITS-90温标 精密铂电阻温度计 比较法 

分 类 号：TH811[机械工程—仪器科学与技术]