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Onsite Calibration of a Precision IPRT Based on Gallium and Gallium-Based Small-Size Eutectic Points

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

Abstract

Onsite thermometer calibration with temperature scale transfer technology based on fixed points can effectively improve the level of industrial temperature measurement and calibration. The present work performs an onsite calibration of a precision industrial platinum resistance thermometer near room temperature. The calibration is based on a series of small-size eutectic points, including Ga–In (\(15.7 \,{^{\circ }}\hbox {C}\)), Ga–Sn (\(20.5 \,{^{\circ }} \hbox {C}\)), Ga–Zn (\(25.2 \,{^{\circ }} \hbox {C}\)), and a Ga fixed point (\(29.7 \,{^{\circ }} \hbox {C}\)), developed in a portable multi-point automatic realization apparatus. The temperature plateaus of the Ga–In, Ga–Sn, and Ga–Zn eutectic points and the Ga fixed point last for longer than 2 h, and their reproducibility was better than 5 mK. The device is suitable for calibrating non-detachable temperature sensors in advanced environmental laboratories and industrial fields.

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Acknowledgements

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

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Authors and Affiliations

  1. National Institute of Metrology, Beijing, China

    Jianping Sun & Xiaopeng Hao

  2. Hubei Institute of Measurement and Testing Technology, Wuhan, China

    Fanchao Zeng

  3. Qingdao Institute of Measurement Technology, Qingdao, China

    Lin Zhang

  4. Suzhou Institute of Measurement and Testing Technology, Suzhou, China

    Xinyun Fang

Authors
  1. Jianping Sun
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  2. Xiaopeng Hao
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  3. Fanchao Zeng
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  4. Lin Zhang
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  5. Xinyun Fang
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Corresponding author

Correspondence to Jianping Sun.

Additional information

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

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Sun, J., Hao, X., Zeng, F. et al. Onsite Calibration of a Precision IPRT Based on Gallium and Gallium-Based Small-Size Eutectic Points. Int J Thermophys 38, 47 (2017). https://doi.org/10.1007/s10765-017-2181-2

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  • DOI: https://doi.org/10.1007/s10765-017-2181-2

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