Two-channel optical flame detector

Details Two-channel optical flame detector Two-channel optical flame detector

G - Physics

08

B

340/155.1

G08B 17/10 (2006.01) G08B 17/12 (2006.01)

Patent

CA 1111933

ABSTRACT A flame detector which is capable of discriminating between hydrocarbon fires and background radiation produced by the sun, artificial light or black body radiation. Two radiation sensors are provided, each being responsive to separate known radiation peaks produced by a hydrocarbon fire. Logic circuitry is provided which produces an alarm signal only when the radiation received by each sensor is above a predetermined value, and when the radiation received by one specified sensor is greater than the radiation received by the other sensor.

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