校准短型廉金属热电偶相关问题的研究  

Research on Calibration of Short Base Metal Thermocouples

作　　者：王喆[1] 余松林[1] 沈文杰[1] 李强光 田昀[1] 蒋静[1] WANG Zhe;YU Song-lin;SHEN Wen-jie;LI Qiang-guang;TIAN Yun;JIANG Jing(Tianjin Institute of Metrological Supervision and Testing,Tianjin 300192,China)

机构地区：[1]天津市计量监督检测科学研究院,天津300192

出　　处：《计量学报》2020年第6期650-655,共6页Acta Metrologica Sinica

基　　金：国家质量监督检验检疫总局科技计划(2016QK158)。

摘　　要：短型廉金属热电偶是一类电极长度较短的可拆卸式廉金属热电偶和廉金属铠装偶的统称。传统的测量设备和测量方法在高温温区往往无法准确测量其示值偏差。通过实验找到其测不准的原因,设计研发接线端恒温器解决这一问题,降低了短型偶示值偏差的扩展不确定度。Short base metal thermocouples is a collective name,covering a kind of detachable base metal thermocouples with short electrode length(electrode length is 300~500 mm)and base metal armored couples(length of metal sleeve is 300~500 mm).Traditional measuring equipment and methods often fail to accurately measure the indication deviation in the high temperature region(above 300℃).The reason for the inaccuracy is found through experiments.The terminal thermostat is designed and developed to solve this problem and effectively reduce the extended uncertainty of the short-type even value deviation.

关 键 词：计量学 短型廉金属热电偶 接线端恒温器 

分 类 号：TB942[一般工业技术—计量学]