Advertisement

International Journal of Thermophysics

, Volume 32, Issue 11–12, pp 2397–2408 | Cite as

Evaluation of Small-Sized Platinum Resistance Thermometers with ITS-90 Characteristics

  • K. Yamazawa
  • K. Anso
  • J. V. Widiatmo
  • J. Tamba
  • M. Arai
Article

Abstract

Many platinum resistance thermometers (PRTs) are applied for high precision temperature measurements in industry. Most of the applications use PRTs that follow the industrial standard of PRTs, IEC 60751. However, recently, some applications, such as measurements of the temperature distribution within equipments, require a more precise temperature scale at the 0.01 °C level. In this article the evaluation of remarkably small-sized PRTs that have temperature–resistance characteristics very close to that of standard PRTs of the International Temperature Scale of 1990 (ITS-90) is reported. Two types of the sensing element were tested, one is 1.2 mm in diameter and 10 mm long, the other is 0.8 mm and 8 mm. The resistance of the sensor is 100 Ω at the triple-point-of-water temperature. The resistance ratio at the Ga melting-point temperature of the sensing elements exceeds 1.11807. To verify the closeness of the temperature–resistance characteristics, comparison measurements up to 157 °C were employed. A pressure-controlled water heat-pipe furnace was used for the comparison measurement. Characteristics of 19 thermometers with these small-sized sensing elements were evaluated. The deviation from the temperature measured using a standard PRT used as a reference thermometer in the comparison was remarkably small, when we apply the same interpolating function for the ITS-90 sub-range to these small thermometers. Results including the stability of the PRTs and the uncertainty evaluation of the comparison measurements, and the comparison results showing the small deviation from the ITS-90 temperature–resistance characteristics are reported. The development of such a PRT might be a good solution for applications such as temperature measurements of small objects or temperature distribution measurements that need the ITS-90 temperature scale.

Keywords

Comparison measurement ITS-90 Platinum resistance thermometers 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    International Standard, IEC 60751:2008, Industrial platinum resistance thermometers and platinum temperature sensors, 2.0 edn. (IEC, International Electrotechnical Commission, Geneva, Switzerland, 2008)Google Scholar
  2. 2.
    Kuramoto N., Fujii K.: IEEE Trans. Instrum. Meas. 58, 915 (2009)CrossRefGoogle Scholar
  3. 3.
    Kuramoto N., Fujii K., Yamazawa K.: Metrologia 48, S83 (2011)CrossRefADSGoogle Scholar
  4. 4.
    Preston-Thomas H.: Metrologia 27, 3 (1990)CrossRefADSGoogle Scholar
  5. 5.
    Supplementary Information for the International Temperature Scale of 1990 (BIPM, Sèvres, France, 1997)Google Scholar
  6. 6.
    K. Yamazawa, K. Anso, J. Tamba, M. Arai, Trans. Soc. Instr. Control Eng. 46 (2010) [in Japanese]Google Scholar
  7. 7.
    L. Crovini, A. Actis, G. Coggiola, A. Mangano, in Temperature, Its Measurement and Control in Science and Industry, vol. 6, ed. by J.F. Schooley (AIP, New York, 1992), pp. 1077–1082Google Scholar
  8. 8.
    Sakurai H.: Trans. Soc. Instr. Control Eng. 39, 342 (2003) [in Japanese]Google Scholar
  9. 9.
    Fernicola V.C., Iacomini L.: Int. J. Thermophys. 29, 1817 (2008)CrossRefADSGoogle Scholar
  10. 10.
    B.W. Mangum, E.R. Pfeiffer, G.F. Strouse, in Proceedings of TEMPMEKO ‘90, 4th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by H.K. Graubner (Multiprint Oy, Helsinki, 1990), pp. 17–36Google Scholar
  11. 11.
    J. Tamba, I. Kishimoto, M. Arai, in Temperature, Its Measurement and Control in Science and Industry, vol. 7, ed. by D.C. Ripple (AIP, New York, 2003), pp. 963–968Google Scholar
  12. 12.
    White D.R., Strouse G.F.: Metrologia 46, 101 (2009)CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • K. Yamazawa
    • 1
  • K. Anso
    • 1
  • J. V. Widiatmo
    • 1
  • J. Tamba
    • 1
  • M. Arai
    • 1
  1. 1.National Metrology Institute of JapanNational Institute of Advanced Industrial Science and Technology (NMIJ, AIST)TsukubaJapan

Personalised recommendations