Particulate detector

Details Particulate detector Particulate detector

2007-07-31

2007-07-31

Trieu, Van T. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S630000, C340S632000

Reexamination Certificate

active

10956335

ABSTRACT:
An apparatus and method are provided for detecting presence in gas of transient particulate above its normal zero or acceptable level within a duct (4), said apparatus comprising at least one emitter (2) of illumination selected from infra-red, ultraviolet and visible radiation capable of being projected over essentially the entire cross section of the duct (4) and at least one detector (8, 18, 25) for detecting any sparkle of the illumination from the particulate. The apparatus and method are in particular useful for detecting monitoring particulate in areas where build up or presence of particulate can be disadvantageous, for example hospitals and electricity generating stations.

REFERENCES:
patent: 4228353 (1980-10-01), Johnson
patent: 4711571 (1987-12-01), Schuman
patent: 4786817 (1988-11-01), Boissevain et al.
patent: 4801352 (1989-01-01), Piwczyk
patent: 6055052 (2000-04-01), Lilienfeld
patent: 6476911 (2002-11-01), Rose
patent: 6731371 (2004-05-01), Shiraishi
patent: 2002/0105645 (2002-08-01), Eriksson
patent: WO 03/012375 (2003-02-01), None

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