Fire detecting system

Details Fire detecting system Fire detecting system

G - Physics

08

B

340/102, 358/21,

G08B 17/00 (2006.01) G08B 17/10 (2006.01)

Patent

CA 1316234

ABSTRACT A fire detector comprising at least one first sensor for emitting a first output signal in response to a fire condition, at least one second sensor for detecting a source of false alarm conditions and an evaluating circuit, said evaluating circuit comprising means for providing an alarm signal in response to a value of said first output signal exceeding a threshold value, and means for changing said threshold value relative to said first output signal value in response to a second output signal from said second sensor.

602553

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