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Proceedings Paper

Emissivities of ceramics for temperature measurements
Author(s): Wolfgang Bauer; Alexander Moldenhauer
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Paper Abstract

Ceramics are used as construction materials for buildings and thermal technical plants. Depending on the fields of its application between ambient temperature and more than 1000 °C there are different ceramic materials in use. For the temperature measurements with pyrometers and infrared cameras band emissivities are needed as settings. Pyrometers and infrared cameras have different spectral work ranges. Therefore, for different devices different emissivities are needed for one and the same material. Selectivity of the spectral emissivities like with ceramic materials can lead thereby to larger differences between the emissivities of a material, and furthermore to temperature dependence of the band emissivities of a material. Examples of different temperature-dependent spectral, band, and total emissivities are shown. These emissivities for different work ranges of pyrometers and infrared cameras were computed based on measured spectral emissivities. The investigation leads to a selection of suitable band emissivities for radiation thermometry of ceramics.

Paper Details

Date Published: 12 April 2004
PDF: 12 pages
Proc. SPIE 5405, Thermosense XXVI, (12 April 2004); doi: 10.1117/12.538739
Show Author Affiliations
Wolfgang Bauer, Univ. Duisburg-Essen (Germany)
Alexander Moldenhauer, Univ. Duisburg-Essen (Germany)


Published in SPIE Proceedings Vol. 5405:
Thermosense XXVI
Douglas D. Burleigh; K. Elliott Cramer; G. Raymond Peacock, Editor(s)

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