Flame sensor

G - Physics – 01 – J

Patent

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Details

340/155.1

G01J 1/00 (2006.01) F23N 5/08 (2006.01) G08B 17/12 (2006.01)

Patent

CA 1108266

A FLAME SENSOR ABSTRACT OF THE DISCLOSURE A flame sensor according to the invention enables automatic monitoring and/or control of the condition of combustion of a flame such as perfect combustion or imperfect combustion by detection of particular infra-red radiations emitted by the flame. The flame sensor includes a rotary disc hav- ing two sets of band-pass filters mounted thereon, a single photoelectric conversion device for measuring intensity of radiations having passed said band-pass filters and a division circuit for providing a ratio of an output of the photoelectric conversion device containing the wavelength of a resonant radiation of a carbon dioxide to an output of the photoelectric conversion device containing no such wavelength. - 1 -

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