Study on In-situ Calibration of Precision Platinum Resistance Thermometer Based on Micro Gallium Fixed-point
WANG Bo-yang1,ZENG Fan-chao2,FU Cheng-yu2,HUANG An-yi1,SUN Jian-ping3
1. School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China
2. Hubei Instiute of Measurement and Testing, Wuhan, Hubei 430223, China
3. National Institute of Metrology, Beijing 100029, China
Abstract：Based on the transfer technology of fixed-point temperature scale, a precision platinum resistance thermometer which can be calibrated in-situ at the melting point of gallium was designed and the characteristics of the micro fixed-point phase change temperature level were analyzed experimentally. The experimental results show that the maximum duration of the fixed temperature plateau is 1.2h, the stability of the plateau is better than 2.8mK and the reusability is better than 2.3mK within 20min. There is a linear relationship between the micro fixed-point temperature level and the heating temperature, and as the heating temperature increases, the temperature plateau value of the fixed-point increases, and the fixed-point temperature level at different heating temperatures can be calculated by fitting formula.
［1］Thomas H, Quinn T. The International Temperature Scale of 1990 (ITS-90) ［J］. Ibid, 1990, 27(1):3-10.
［2］Hao X P, Mcevoy H, Machin G, et al. A comparison of the In, Sn, Zn and Al fixed points by radiation thermometry between NIM and NPL and verification of the NPL blackbody reference sources from 156℃ to 1000℃ ［J］. Measurement Science & Technology, 2013, 24(7):1-6.
［3］Hao X P, Yuan Z D, Huang S Y, et al. Study on the Infrared Lens-Free Irradiation Thermometer Based on InGaAs Detector at NIM ［J］. International Journal of Thermophysics, 2015, 36(12):1-10.
［4］曾佳旭,潘江,孙建平,等. 微型双温度固定点容器研制［J］. 计量学报, 2021, 42(4):458-462.
Zeng J X, Pan J, Sun J P, et al. Development of Miniature Double Temperature Fixed Point Cell ［J］. Acta Metrologica Sinica, 2021, 42(4):458-462.
［5］任建平, 孙建平, 李婷,等. 标准铂电阻温度计自热效应对测量结果的影响［J］. 计量学报, 2021, 42(5):589-594.
Ren J P, Sun J P, Li T, et al. Influence of Self-heating Effect of Standard Platinum Resistance Thermometer on Measurement Results ［J］. Acta Metrologica Sinica, 2021, 42(5):589-594.
［6］郝小鹏,宋健,孙建平,等. 风云卫星的红外遥感亮度温度国家计量标准装置［J］.光学精密工程,2015,23(7):1845-1851.
Hao X P, Song J, Sun J P, et al. Vacuum radiance temperature national standard facility for Infrared remote sensors of Chinese Fengyun meteorological satellites ［J］. Optics and Precision Engineering, 2015, 23(7):1845-1851.
［7］Pokhodun A. Current Status and Prospects for Development of Thermometry ［J］. American Institute of Physics Conference Series, 2013, 1552(1):89-93.
［8］Ohring G, Wielicki B, Spencer R, et al. Satellite Instrument Calibration for Measuring Global Climate Change: Report of a Workshop ［J］. Bulletin of the American Meteorological Society, 2005, 86(9):1303-1314.
［9］李凯,郝小鹏,宋健,等. 真空汞固定点黑体辐射源的设计与研制［J］. 计量学报, 2020, 41(4):413-418.
Li K, Hao X P, Song J, et al. Design and Development of Vacuum Mercury Fixed Point Blackbody Radiation Source ［J］. Acta Metrologica Sinica, 2020, 41(4): 413-418.
［10］Hashemian H, Bean W. Sensors for Next-Generation Nuclear Plants: Fiber-Optic and Wireless ［J］. Nuclear Science & Engineering, 2011, 169(3):262-278.
［11］李利峰,李锐,闫小克,等. 镓熔点温坪复现研究［J］. 计量学报, 2020, 41(4):419-424.
Li L F, Li R, Yan X K, et al. Study on the Realization of Gallium Melting Point Plateau ［J］. Acta Metrologica Sinica, 2020, 41(4):419-424.
［12］Burdakin A, Khlevnoy B, Samoylov M, et al. Melting points of gallium and of binary eutectics with gallium realized in small cells ［J］. Metrologia, 2008, 45(1):75-82.
［13］曾凡超, 曾兵, 孙建平, 等. 基于微型Ga-Sn共晶点的精密铂电阻温度计现场标定［J］. 计量学报, 2015, 36(z1):28-31.
Zeng F C, Zeng B, Sun J P, et al. Precision Platinum Resistance Thermometer in the Field Calibration Based on Miniature Ga-Sn Eutectic Point ［J］. Acta Metrologica Sinica, 2015, 36(z1):28-31.
［14］孙建平, 曾凡超, 张琳, 等. 微型镓基共晶点现场精密铂电阻温度计校准研究［J］. 计量学报, 2015, 36(z1):32-36.
Sun J P, Zeng F C, Zhang L, et al. Onsite Calibration of the Precision Industrial Platinum Resistance Thermometer Based on Gallium and Gallium-based Small-size Eutectic Points ［J］. Acta Metrologica Sinica, 2015, 36(z1):32-36.
［15］徐春媛. 微型固定点相变特性的研究［D］. 西安:西安工程大学, 2017.
［16］曾佳旭. 基于微型相变固定点现场比较器的性能研究［D］. 杭州:中国计量大学, 2020.
2022, Vol. 43 
