Research on the Construction and Reproducibility of the Co-C HTFP for Thermocouple Calibration
ZHENG Wei1, LIANG Xing-zhong2, WU Jian3
1. National Institute of Metrology, Beijing 100013, China;
2. Shandong Institute of Metrology, Jinan, Shandong 250014, China;
3. Beijing Institute of Metrology, Beijing 100029, China
Abstract：The method of construction of Co-C high temperature fixed point for thermometer calibration and the testing results of reproducibility with thermocouple at National Institute of Metrology of China are introduced.The experimental data show that the reproducibility of melting point of Co-C cell is 0.03 ℃ using Pt/Pt thermocouple, and the cell is robust after 110 melting and freezing cycles with 500 h above 1300 ℃.
郑玮, 梁兴忠, 吴健. 用于分度热电偶的Co-C高温共晶点的制作和复现性研究[J]. 计量学报, 2013, 34(5): 430-434.
ZHENG Wei, LIANG Xing-zhong, WU Jian. Research on the Construction and Reproducibility of the Co-C HTFP for Thermocouple Calibration. Acta Metrologica Sinica, 2013, 34(5): 430-434.
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2013, Vol. 34 
