Contactless measurement of the spectral emissivity and temperature of surfaces with a Fourier transform infrared spectrometer

Erwin Lindermeir; Volker Tank; Peter Haschberger

doi:10.1117/12.58553

1 April 1992 Contactless measurement of the spectral emissivity and temperature of surfaces with a Fourier transform infrared spectrometer

Erwin Lindermeir, Volker Tank, Peter Haschberger

Author Affiliations +

Proceedings Volume 1682, Thermosense XIV: An Intl Conf on Thermal Sensing and Imaging Diagnostic Applications; (1992) https://doi.org/10.1117/12.58553
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

A method for the measurement of the spectral emissivity and temperature of a surface is presented. The spectrum of the infrared radiation of a heated surface is measured by means of a Fourier transform infrared spectrometer. To obtain emission spectra in units of spectral radiance a special calibration procedure is described which uses three black bodies as reference sources thus eliminating the need to measure the black bodies' surface temperatures. A theoretical emission spectrum of the investigated surface's radiance is fitted to the calibrated measurement resulting in (in the Gaussian sense) optimal values of spectral emissivity and temperature of the surface.

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Erwin Lindermeir, Volker Tank, and Peter Haschberger "Contactless measurement of the spectral emissivity and temperature of surfaces with a Fourier transform infrared spectrometer", Proc. SPIE 1682, Thermosense XIV: An Intl Conf on Thermal Sensing and Imaging Diagnostic Applications, (1 April 1992); https://doi.org/10.1117/12.58553

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