Onsite Calibration of the Precision Industrial Platinum Resistance Thermometer Based on Gallium and Gallium-Based Small-size Eutectic Points
SUN Jian-ping1,ZENG Fan-chao2,ZHANGLin3,ZENG Bin2,FANG Xin-yun4
1. National Institute of Metrology, Beijing 100029, China
2.Chengdu University of Technology, ChengduSichuan 610059,China
3.Qingdao Institute of Measurement Technology, Qingdao Shandong 266000, China
4.Suzhou Institute of Measurement and Testing Technology, Suzhou Jiangsu 215128, China
Abstract：Onsite thermometer calibration with the temperature scale calibration technology based on fixed points is an effective means to improve the level of industrial temperature measurement and calibration. The small-size eutectic point including Ga-In (15.7 ℃), Ga-Sn (20.5 ℃), Ga-Zn (25.2 ℃) and Ga fixed point (29.7 ℃) with a portable multi-point automatic realization device are developed to explore the onsite calibration of the precision industrial platinum resistance thermometer near room temperature. The results show that the temperature plateaus and reproducibility of the Ga-In,Ga-Sn,Ga-Zn eutectic points and Ga fixed point are above 2 h and better than 5mK respectively. This research will offer the technique supports for the onsite calibration of temperature sensor of blackbody forinfrared remote sensing satellite.
［1］Preston-Thomas H,Quinn T J. The International Temperature Scale of 1990(ITS-90)［J］. Ibid, 1990,27(1): 3-10
［2］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.
［3］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.
［4］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.
［5］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(6A):???-???.
［6］周晶.金属的固/液界面能与形核过冷度研究［D］.西安:西安工业大学,2009.
［7］魏超峰.金属熔体结构随温度变化的时间之后规律研究［D］.西安:西安工业大学,2008.
［8］耿兴国,陈光,傅志恒.过热合金熔体的几种物性滞后效应［J］.材料科学与工程,2002(4):549-551.
［9］Ohring G, Wielicki B, Spencer R,Ellington S D,et al. Satellite instrument calibration for measuring global climate change［J］.Bulletin of the American Meteorological Society,2004,86(9):1303-1313.
［10］Best F A,Adler D P,Ellington S D. et al. On-orbit Absolute Calibration of Temperature with Application to the CLARREO Mission［J］. Earth Observing Systems XIII, 2008,7081:1-10.
2015, Vol. 36 
