摘要
热电偶测温系统是真空热试验中最常用的温度测量系统。该测温系统使用热电偶数量多,同时受内置参考点温度场变化的影响,不适合对其系统进行校准。文章依据热电偶测温系统的工作原理和计算公式,对该测温系统的不确定度进行了分析和评定,对某一批次热电偶的不确定度进行了计算。通过试验与铂电阻测温的比对,对热电偶测温系统的不确定评价进行了验证。
Thermocouple measurement system is widely used in vacuum thermal test.Temperature measurement systemcannot be calibrated,because it uses a large number of thermocouple,and the temperature result is affected by temperaturefield changes of built-in referenced device.Uncertainty analysis and evaluation of thermocouple measurement systemis given,according to the principle and the computational formula.Through experimentation with RTD(ResistanceTemperature Detector),uncertainty evaluation of thermocouple measurement system is confirmed.
作者
高斌
赛建刚
王亚军
高博
韩磊
张海民
GAO Bin;SAI Jian-gang;WANG Ya-jun;GAO Bo;HAN Lei;ZHANG Hai-min(Xi’ an Institute of Optics and Precision Mechanics,CAS,Xi’ an 710119,China)
出处
《真空与低温》
2017年第2期115-119,共5页
Vacuum and Cryogenics
关键词
热电偶
测温系统
不确定度评定
thermocouple
temperature measurement system
uncertainty evaluation
