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

  • TEMPMEKO 2016
  • Published:
International Journal of Thermophysics Aims and scope Submit manuscript

Abstract

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.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 11475162 and 51576181) and the National High-tech R&D Program (863 Program No. 2015AA123701).

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Authors and Affiliations

  1. Division of Thermophysics and Process Measurements, National Institute of Metrology, Beijing, 100013, China

    X. P. Hao, J. P. Sun, P. Wen, J. Song & Z. L. Liu

  2. School of Science, Xi’an Polytechnic University, Xi’an, 710048, Shanxi, China

    C. Y. Xu

  3. College of Applied Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, 610059, Sichuan, China

    M. Xu & L. Y. Gong

  4. Key Laboratory of Infarared System Detection and Imaging Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China

    L. Ding

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  1. X. P. Hao
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  2. J. P. Sun
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  3. C. Y. Xu
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  4. P. Wen
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  5. J. Song
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  6. M. Xu
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  7. L. Y. Gong
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  8. L. Ding
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  9. Z. L. Liu
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Corresponding author

Correspondence to X. P. Hao.

Additional information

Selected Papers of the 13th International Symposium on Temperature, Humidity, Moisture and Thermal Measurements in Industry and Science.

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Hao, X.P., Sun, J.P., Xu, C.Y. et al. Miniature Fixed Points as Temperature Standards for In Situ Calibration of Temperature Sensors. Int J Thermophys 38, 90 (2017). https://doi.org/10.1007/s10765-017-2223-9

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  • DOI: https://doi.org/10.1007/s10765-017-2223-9

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