WANG Gang, YAO Jinyuan, WANG Bo, et al. Research on dynamic performances of thin film Pt/PtRh thermocouples[J]. 2021, (6): 37-39. DOI: 10.13873/J.1000-9787(2021)06-0037-03.
Pt/PtRh薄膜热电偶的动态性能研究
摘要
鉴于航空发动机部件温度高、温度变化快的特性
本文采用微机电系统(MEMS)工艺制备高温Pt-PtRh薄膜热电偶
分别搭建薄膜热电偶的静态标定和动态响应测试平台
对薄膜热电偶的热电输出特性进行了标定
结果表明:Pt-PtRh薄膜热电偶与标准丝状同材质热电偶的输出特性基本一致
平均塞贝克系数为13.8μV/K
动态测试的整体响应时间在25~40μs范围内
具有很快的响应速度。
Abstract
Temperature of aircraft engine is very high and it changes rapidly
Pt-PtRh thin film thermocouple is fabricated by micro-electro-mechanical system(MEMS)process to acquire its static and dynamic performances.The testing systems is built.The static output is nearly the same as that of standard thermocouple.The average Seebeck coefficient is 13.8 μV/K.Response time of dynamic output is 25~40 μs.The result shows fast response speed and good repeatability.