Abstract
A novel thin-filament pyrometer is presented. It involves a consumer-grade color digital still camera with 6 megapixels and 12 bits per color plane. SiC fibers were used and scanning-electron microscopy found them to be uniform with diameters of . Measurements were performed in a methane–air coflowing laminar jet diffusion flame with a luminosity length of . Calibration of the pyrometer was accomplished with B-type thermocouples. The pyrometry measurements yielded gas temperatures in the range of 1400–2200 K with an estimated uncertainty of , a relative temperature resolution of , a spatial resolution of , and a temporal resolution of . Fiber aging for 10 min had no effect on the results. Soot deposition was less problematic for the pyrometer than for the thermocouple.
© 2007 Optical Society of America
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