Two-Year Experience With Multiwavelength Optical Pyrometry

Zeljko Andreic; Kresimir Svenda; Anton Persin

doi:10.1117/12.941441

10 September 1987 Two-Year Experience With Multiwavelength Optical Pyrometry

Zeljko Andreic, Kresimir Svenda, Anton Persin

Proceedings Volume 0807, Passive Infrared Systems and Technology; (1987) https://doi.org/10.1117/12.941441
Event: Fourth International Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, The Hague, Netherlands

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.

Citation Download Citation

Zeljko Andreic, Kresimir Svenda, and Anton Persin "Two-Year Experience With Multiwavelength Optical Pyrometry", Proc. SPIE 0807, Passive Infrared Systems and Technology, (10 September 1987); https://doi.org/10.1117/12.941441

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