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Pyrometry for Temperature Measurements

  • Daniel Ng
Chapter

Abstract

Temperature measurement is central in all aspects of engineering and scientific research. The use of thermocouples to measure temperature is well known and documented.1 The application of thermocouples in temperature measurement is often confined to relatively ideal environments where the presence of necessary thermocouple lead wires to facilitate measurement is acceptable and possible. To use thermocouples to measure temperature in hostile environments, it is usually necessary to provide them with adequate protection, such as an inert atmosphere or suitable coating barriers to protect against damage often due to oxidation. Even so, measurement is generally still often restricted to temperatures well below the thermocouple material’s melting point, currently lower than 293 0°C for the highest temperature tungsten-rhenium material combination. It also may happen that the target object is located very far away that it is impossible to connect by wires, e.g. to measure the temperature of the universe’s cosmic background. In these applications, pyrometry is best suited and is often the only method to choose if radiation is all that is available from the target of interest whose temperature one wishes to know.

Keywords

Temperature Measurement Thermal Barrier Coating Radiation Spectrum Optical Metrology Quartz Lamp 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    See for example, Temperature Measurement in Industry, by E.C. Magison, Instrumen Society of America.Google Scholar
  2. 2.
    D.P. De Witt, G.D. Nutter, Theory and Practice of Radiation Thermometry, John Wiley & Sons, New York, 1988.Google Scholar
  3. 3.
    G.B. Hunter, CD. Allemand, T.W. Eagar, Optical Engineering, Vol 25, No. 11, November 1986, pages 1222–1231.Google Scholar
  4. 4.
    M.A. Khan, C. Allemand and T.W. Eagar, Rev. Sci. Instrum., 62 (2), Feb 1991, pp. 392–402.ADSCrossRefGoogle Scholar
  5. 5.
    M.A. Khan, C. Allemand and T.W. Eagar, Rev. Sci. Instrum., 62 (2), Feb 1991, pp. 403–409.ADSCrossRefGoogle Scholar
  6. 6.
    D. Ng, W.D. Williams, Temperature, Volume 6,1992, AIP, pages 889–893.Google Scholar
  7. 7.
    D. Ng, G. Fralick, Rev. Sci. Instrum., 72 (2), Feb 2001, pl522–1530.CrossRefGoogle Scholar
  8. 8.
    Spectrometer Model SR5000 is manufactured by CI System, Inc.Google Scholar
  9. 9.
    Y.A. Levendis, K.R. Estrada and H.C. Hottel, Rev. Sci. Instrum., 63 (7), p.3608, 1992.ADSCrossRefGoogle Scholar
  10. 10.
    D. Ng, Temperature Measurement of Ceramic Material, NASA TM 1999–208850.Google Scholar
  11. 11.
    T.J. Quinn, Temperature, Academic Press, 1983, page 361.Google Scholar
  12. 12.
    Gustave Fralick, and Daniel Ng, Pyrometric Gas and Surface Temperature Measurements, NASA TM 1999–209059.Google Scholar
  13. 13.
    D.L. Ng, Multiwavelength pyrometer for gray and non-gray surfaces in the presence of interfering radiation, US. Patent 5,326,172.Google Scholar
  14. 14.
    D. Ng and G. Fralick, NASA TM 2001–210891.Google Scholar
  15. 15.
    I.J.D. Craig, and J.C. Brown, Inverse Problems in Astronomy, Adam Hilger Ltd, Bristol and Boston, 1986.MATHGoogle Scholar
  16. 16.
    Jiro Ohno, Temperature, volume 5, page 401–407, 1982, American Institute of Physics.Google Scholar
  17. 17.
    FAR Associates, http://www.pyrometry.com/

Copyright information

© Springer Science+Business Media New York 2003

Authors and Affiliations

  • Daniel Ng
    • 1
  1. 1.Glenn Research CenterNational Aeronautics and Space AdministrationUSA

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