1. College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310000, China
2. National Institute of Metrology, Beijing 100029, China
Abstract The TPH (triple point of equilibrium hydrogen) is one of the reference fixed points at the low-temperature rang in the international temperature scale of 1990(ITS-90) and the national primary fixed point of the temperature. In the previous primary temperature standard facility, the realization process of the TPH is time-consuming and inefficient. In order to solve these problems, a new type of realization facility of the TPH based on closed-cycle refrigerator, realized the TPH under the quasi-adabatic condition, has been developed by National Institute of Metrology of China. The program based on the Labview is used for instrument controlling and automatic measuring. The facility improves both efficiency and measurement accuracy. The results show that the repeatability of the TPH is better than 0.05 mK and the standard uncertainty is better than 0.1 mK
ZHU Peng-fei,QU Ji-feng,SUN Jian-ping, et al. An Automated System for Realizing the Triple Point of Equilibrium Hydrogen Based on Closed-cycle Refrigerator[J]. Acta Metrologica Sinica, 2018, 39(1): 28-32.
［1］孙建平. 准绝热密封氩三相点复现装置［J］. 计量学报,2011,32(6):481-484.
［2］王伟,孙建平,曾凡超,等.基于准绝热的锌固定点复现装置［J］.计量学报,2016,37(6):591-595.
［3］方信昀,孙建平,曾凡超,等.高精密测温电桥的标定与评估［J］.计量学报,2016,37(3):265-270.
［4］林鸿, 邱萍, 王松安.低温固定点复现的自动控制系统［J］.计量学报,2007,28(z1):73-78.
［5］Pavese F, Peroni I, Sparasci F. A closed-cycle refrigerator for realizing low temperature fixed points［C］ //CELTAM.Wroclaw,Poland,2003.
［6］Yang I, Song C H, Kim Y G. Cryostat for Fixed-Point Calibration of Capsule-Type SPRTs［J］. International Journal of Thermophysics,2011,32(11):2351-2359.
［7］国家技术监督局计量局.1990年国际温标宣贯手册［M］.北京:中国计量出版社,1990.
［8］孙建平,邱萍,张金涛.微量杂质对锌凝固点影响的评估［J］.计量学报,2010,31(3):223-228.
［9］Steele A G, Fellmuth B, Head D I. CCT-K2: key comparison of capsule-type standard platinum resistance thermometers from 13.8 K to 273.16 K［J］. Metrologia,2002,39(6):551-572.
［10］Hill K D, Nakano T, Steur P. Final report on CCT-K2.5: NRC/NMIJ/INRIM comparison of capsule-type standard platinum resistance thermometers from 13.8 K to 273.16 K［J］.Metrologia,2015,52(1A):03001.
［11］Peruzzi A, Bosma R, Hark J V D. The Dutch National Realization of the ITS-90 over the Range 13.8033 K-273.16 K［J］.International Journal of Thermophysics,2007,28(6):1882-1892.
［12］Nakano T, Tamura O, Sakurai H. Realization of Low-Temperature Fixed Points of the ITS-90 at NMIJ/AIST［J］.International Journal of Thermophysics,2007,28(6):1893-1903.
［13］李湜然, 王磊, 武荷莲,等.138 033～27 316 K温度国家基准的不确定度评定［J］.计量学报,2000,21(3):189-194.
2018, Vol. 39 
