Miniature Fixed Points as Temperature Standards for In Situ Calibration of Temperature Sensors

被引：22

作者：

Hao, X. P. ^{[1
]}

Sun, J. P. ^{[1
]}

Xu, C. Y. ^{[2
]}

Wen, P. ^{[1
]}

Song, J. ^{[1
]}

Xu, M. ^{[3
]}

Gong, L. Y. ^{[3
]}

Ding, L. ^{[4
]}

Liu, Z. L. ^{[1
]}

机构：

[1] Natl Inst Metrol, Div Thermophys & Proc Measurements, Beijing 100013, Peoples R China

[2] Xian Polytech Univ, Sch Sci, Xian 710048, Shanxi, Peoples R China

[3] Chengdu Univ Technol, Coll Appl Nucl Technol & Automat Engn, Chengdu 610059, Sichuan, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Infarared Syst Detect & Imaging Technol, Shanghai 200083, Peoples R China

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2017年 / 38卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ga and Ga-In alloy; In situ calibration; Miniature fixed-point; Phase transition; Quasi-adiabatic system;

D O I：

10.1007/s10765-017-2223-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Miniature Ga and Ga-In alloy fixed points as temperature standards are developed at National Institute of Metrology, China for the in situ calibration of temperature sensors. A quasi-adiabatic vacuum measurement system is constructed to study the phase-change plateaus of the fixed points. The system comprises a high-stability bath, a quasi-adiabatic vacuum chamber and a temperature control and measurement system. The melting plateau of the Ga fixed point is longer than 2 h at 0.008 W. The standard deviation of the melting temperature of the Ga and Ga-In alloy fixed points is better than 2 mK. The results suggest that the melting temperature of the Ga or Ga-In alloy fixed points is linearly related with the heating power.

引用

页数：13

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