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Precision Platinum Resistance Thermometer inthe Field Calibration Based on Miniature Ga-Sn Eutectic Point |
ZENG Fan-chao1,ZENG Bin1,SUN Jian-ping2,FANG Xin-yun3,WANG Wei4 |
1.Chengdu University of Technology, Chengdu, Sichuan 610059, China
2. National Institute of Metrology, Beijing 100029, China
3.Suzhou Institute of Measurement and Testing Technology, Suzhou, Jiangsu 215128, China
4.Guangzhou Institute of Measurement and Testing Technology, Guangzhou, Guangdong 510030, China |
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Abstract Base on the onsite thermometer calibration with the temperature scale calibration technology, the small-size eutectic point Ga-Sn (20.5 ℃) with a portable automatic realization device are developed to use for the precision platinum resistance thermometer in the industrial site calibration. The results show that the eutectic point temperature plateau sustainable time 2.4 h, which varies by less than 20 mK within 15 minutes, reproducibility result is 4.3 mK. Analysis of experimental results are summarized in two kinds of practical calibration method - comparison and point method, reproducibility of two methods is less than 5 mK.
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[1]Pokhodun A I.Current status and prospects for development of thermometry[J].American Institute of Physics Conference Series, 2013,1552(1): 89-93.
[2]Hashemian H M,Bean W C. Sensors for Next-Generation Nuclear Plants:Fiber-Optic and Wireless[J].Nuclear Scienec and enigeering, 2011,169(3): 262–278.
[3]Preston-Thomas H,Quinn T J.The International Temperature Scale of 1990(ITS-90)[J]. Ibid,1990, 27(1):3-10.
[4]Eder F, Pearce J, White D R.Guide on Secondary Thermometry Specialized Fixed Point above 0 ℃[R].France:Bureau International des Poids et Mesures,2014.
[5]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(6A):???-???
[6]赵品,谢辅洲,等.材料科学基础教程[M]. 哈尔滨:哈尔滨工业大学出版社,2009:66-78.
[7]Krapf G, Schalles M,Frhlich T.Estimation of fixed-point temperatures-A practical approach[J]. Measurement,2011 ,44(2):385-390.
[8]Burdakin A, Khlevnoy B, Samoylov M,et al.Development of Gallium and Gallium-Based Small-Size Eutectic Melting Fixed Points for Calibration Procedures On Autonomous Platforms[J].Thermophys,2009,30(1):20-35.
[9]Boguhn D, Augustin S, Bernhard F,et al. Application of Binary Alloys in Miniature Fixed-Point Cells as Secondary Fixed Points in the Temperature Range from 500 ℃ to 660 ℃[J]. Temperature: Its Measurement and Control in Science and Industry,2003,684(1):249-254.
[10]Machin G,Yamada Y,Lowe D. A comparison of high temperature fixed-points of Pt-C and Re-C constructed by BIPM,NMIJ and NPL[J]. Tempmeko,2004,2:1049-1055. |
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