计量学报2025，Vol.46Issue(5)：667-672,6.DOI:10.3969/j.issn.1000-1158.2025.05.07
标准铂电阻温度计在介质中的自热效应及测量方法
Self-heating Effect of Standard Platinum Resistance Thermometerin Media and Measurement Method
摘要
Abstract
Aiming at the problem of difficulty in accurately measuring the standard platinum resistance thermometers in environments such as constant temperature baths,a method based on comparison and repeated measurement for the self-heating effect of the standard platinum resistance thermometers suitable for fluctuating media is proposed,and the influence of different media on the self-heating effect of the thermometer are compared.The results indicate that methods based on comparison and repeated measurements of more than 50 times can effectively reduce the impact of temperature fluctuations on the measurement of self-heating effect.The self-heating effect of the standard platinum resistance thermometers in commonly used media generally reaches 1.0 mK or above,which significantly affects the accuracy of the standard platinum resistance thermometers in value transfer.Therefore,it is necessary to accurately measure and correct the self-heating effect of the standard platinum resistance thermometers in value transfer.关键词
温度计量/标准铂电阻温度计/自热效应/恒温槽/量值传递Key words
temperature measurement/standard platinum resistance thermometer/self-heating effect/thermostatic bath/value transfer引用本文复制引用
任建平,李婷,刁福广,孙建平..标准铂电阻温度计在介质中的自热效应及测量方法[J].计量学报,2025,46(5):667-672,6.基金项目
国家重点研发计划(2022YFF0607500/2022YFF0607501) （2022YFF0607500/2022YFF0607501）
国家自然科学基金青年科学基金(52306121) （52306121）
