Infra-red dynamic flame detector

Details Infra-red dynamic flame detector Infra-red dynamic flame detector

G - Physics

01

J

73/112, 340/155.

G01J 5/10 (2006.01) F23N 5/08 (2006.01) F23N 5/24 (2006.01) G01J 1/42 (2006.01)

Patent

CA 1043445

ABSTRACT OF THE DISCLOSURE A compact signal transmitter head infrared flame detector unit is mounted in a small opening in the wall of a foasil fuel fired furnace. The unit includes a preamplifier solid state circuit including an infrared sensor which is focused on the combustion zone of the furnace for sensing and transforming flame fluctuations into corresponding preamplified signal current fluctuations, which are conducted by a shielded cable to a transistorized main amplifier filter and rectifier circuit in a remote signal receiver terminal unit. The unit has the capability of distinguishing from the fluctuations in- herent in the flame from the background radiation. An in- tergrated control circuit is associated with the main amplifier circuit for digitally processing the signal fluctuations and automatically operating flame indicators and/or alarms as re- quired by the condition of the flame combustion zone.

210218

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