负温度系数热敏电阻温度计示值测量不确定度评定  

Evaluation of measurement uncertainty for negative temperature coefficient thermistor thermometer

作　　者：李海兵 张福民[1] 贾广成 冯雪峰 李峰 卓华 奥尔格勒 LI Haibing;ZHANG Fumin;JIA Guangcheng;FENG Xuefeng;LI Feng;ZHUO Hua;AO Ergele(State Key Laboratory of Precision Measurement Technology and Instruments,Tianjin University,Tianjin 300072,China;Xinjiang Uygur Autonomous Region Research Institute of Measurement and Testing,Urumqi 830011,China;Modern Science and Technology College,China Jiliang University,Jinhua 322000,China)

机构地区：[1]天津大学,精密测试技术及仪器国家重点实验室,天津300072 [2]国家市场监管技术创新中心(中亚能源计量),新疆维吾尔自治区计量测试研究院,新疆乌鲁木齐830011 [3]中国计量大学现代科技学院,浙江金华322000

出　　处：《工业计量》2024年第6期68-71,94,共5页Industrial Metrology

基　　金：国家市场监督管理总局技术保障专项项目(2022YJ38);国家市场监督管理总局科技计划项目(2021MK117);新疆维吾尔自治区自然科学基金(2022D01A284);义乌市自然科学课题(2025ZX017)。

摘　　要：负温度系数(Negative temperature coefficient,简称NTC)热敏电阻温度计的常用测量范围为-60~300℃,广泛应用于工业生产、家居电器、科研、国防、海洋等各个方面。相较于金属热电阻温度计,热敏电阻温度计具有稳定性好、价格低廉的优点。对热敏电阻温度计示值不确定的分析评价过程,相关方面的研究较少。文章分析了负温度系数热敏电阻温度计示值测量结果的不确定度来源,对各个不确定度的分量特别是温度计的自热效应进行评定,并给出了总的示值不确定度。The common measurement range of negative temperature coefficient(NTC)thermistor thermometers is-60~300℃,which are widely used in industrial area,home appliances,scientific research,national defense,marine and other fields.Compared with metal-based thermometers,thermistor thermometers have many advantages such as good stability and low cost.There is relatively little research on the analysis and evaluation process of value uncertainty of thermistor thermometers.This paper analyzes the sources of the uncertainty of measurement results of NTC thermistor thermometers,especially the self-heating effect of thermometers,then evaluates the components of uncertainty and provides the overall measurement value uncertainty.

关 键 词：负温度系数热敏电阻 参数 不确定度 

分 类 号：TH811[机械工程—仪器科学与技术]