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Proceedings Paper

Two-Year Experience With Multiwavelength Optical Pyrometry
Author(s): Zeljko Andreic; Kresimir Svenda; Anton Persin
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Paper Abstract

A brief theoretical description of graybody radiation laws is given. Distribution temperature is defined as the temperature for which the theoretical Planck radiation curve fits best the measured radiation curve of the real body. A numerical method for calculating the distribution temperature is described and discussed. Functional schemes and description of operating experimental device are presented. The main components of the device are 256-channel polychromator with fixed optical elements and a linear solid-state detector array, fast 8-bit A/D converter, I/O computer interface and computer. The device can take up to 80 samples of radiation spectra between 500 and 1100 nm with sampling speeds up to 473 spectra/second. The collected data are postprocessed with a powerful software package which allows calculations of distribution temperature, elimination of spectral lines before calculation, spectra smoothing and averaging, etc. It is not necessary to know the emissivity constant when calculating the distribution temperature. Calibration procedures necessary for such an instrument are defined and encountered problems are described. Experimental measurements of transient behaviour of tungsten-filament lamp during power-up conditions and temperature measurements of burning pyrotechnical mixtures are presented and described.

Paper Details

Date Published: 10 September 1987
PDF: 7 pages
Proc. SPIE 0807, Passive Infrared Systems and Technology, (10 September 1987); doi: 10.1117/12.941441
Show Author Affiliations
Zeljko Andreic, Rudjer Bogkovic Institute (Yugoslavia)
Kresimir Svenda, Rudjer Bogkovic Institute (Yugoslavia)
Anton Persin, Rudjer Bogkovic Institute (Yugoslavia)

Published in SPIE Proceedings Vol. 0807:
Passive Infrared Systems and Technology
H. M. Lamberton, Editor(s)

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