AI Article Synopsis
- The study introduces a new thin-filament pyrometer using a consumer-grade digital camera (6 MP, 12 bits per color) to measure high temperatures.
- SiC fibers with a uniform diameter of 13.9 micrometers were used to conduct measurements in a methane-air flame, achieving gas temperatures between 1400-2200 K with a temperature uncertainty of +/-60 K.
- The pyrometer demonstrated good performance, with a spatial resolution of 42 micrometers and a temporal resolution of 0.66 milliseconds, and showed less soot deposition issues compared to traditional thermocouples.
Article 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 13.9 micro m. Measurements were performed in a methane-air coflowing laminar jet diffusion flame with a luminosity length of 72 mm. 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 +/-60 K, a relative temperature resolution of +/-0.215 K, a spatial resolution of 42 mum, and a temporal resolution of 0.66 ms. Fiber aging for 10 min had no effect on the results. Soot deposition was less problematic for the pyrometer than for the thermocouple.
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| http://dx.doi.org/10.1364/ao.46.000483 | DOI Listing |
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