一种新型高温热电偶性能测试系统的研制  

Development of a New High Temperature Thermocouple Performance Testing System

作　　者：陈清清 潘江 袁定琨 CHEN Qing-qing;PAN Jiang;YUAN Ding-kun(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China)

机构地区：[1]中国计量大学计量测试工程学院,浙江杭州310018

出　　处：《计量学报》2022年第11期1424-1430,共7页Acta Metrologica Sinica

基　　金：国家自然科学基金(52006206)。

摘　　要：热电偶在高温使用时容易受到材料相容性、氧化等多种因素的影响,产生显著的不均匀性,需要对其进行性能测试,以进一步判断其测温准确度。研制了一种新结构的高温管式炉,控温热电偶布置方式有利于提高恒温段温度均匀性;在此基础上,搭建了一套高温热电偶测试系统,并对系统性能进行了理论模拟和实验研究。测试结果显示,在400~1000℃范围内,测试系统的温度稳定性优于±0.25℃;长度为150 mm的恒温段的温度均匀性优于±0.35℃,表明测试系统的性能够满足热电偶性能测试的需求。A high temperature thermocouple testing system is developed,including a new structure of high temperature tube furnace,a temperature control module and a temperature measuring module,and the temperature stability and uniformity of the constant temperature section are experimentally studied.The temperature stability of the test system is better than±0.25℃in the range of 400℃to 1000℃;The temperature uniformity of the constant temperature section with a length of 150 mm is better than±0.35℃.The experimental results show that the performance of the test system can meet the requirements of thermocouple performance test.

关 键 词：计量学 高温管式炉 热电偶性能测试 温度场 均匀性 稳定性 

分 类 号：TB942[一般工业技术—计量学]