Two channel optical flame detector
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United States of America Patent
Stats
-
Jun 3, 1980
Grant Date -
N/A
app pub date -
May 8, 1978
filing date -
May 8, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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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