接线端恒温器的研制与应用  

Development and Application of Terminal Temperature

作　　者：王喆[1] 沈文杰[1] 王晓丹 李强光 WANG Zhe;SHEN Wen-jie;WANG Xiao-dan;LI Qiang-guang(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：《自动化与仪表》2020年第3期77-81,103,共6页Automation & Instrumentation

基　　金：国家质量监督检验检疫总局科技计划项目(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(电极长度为300 mm^500 mm)和廉金属铠装偶(金属套管长度为300 mm^500 mm)的统称。传统的测量设备和测量方法在高温温区(300℃以上)往往无法准确测量其示值偏差。该文根据其测量原理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 mm^500 mm)and base metal armored couples(length of metal sleeve is 300 mm^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：温度计量 热电偶 接线端恒温器 短型廉金属热电偶 

分 类 号：TH811[机械工程—仪器科学与技术]