Flame detector system

Details Flame detector system Flame detector system

1986-04-09

1988-04-05

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

377 20, 307518, 328120, G01J 142

Patent

active

047361050

ABSTRACT:
An ultraviolet type flame detection system utilizes an UV detector for producing pulses from flame produced UV photons. A logic and clock circuit defines a sequence of windows. A counter is advanced by the clock and reset if no detector pulse occurs in a window. If detector pulses occur in each of a preselected sequence of windows, the logic circuit enables an alarm. When detector pulses cease, the logic circuit resets the system.

REFERENCES:
patent: 4005754 (1977-02-01), Linden et al.
patent: 4280184 (1981-07-01), Weiner et al.

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