PARTICULATE DETECTOR
First Claim
1. An apparatus is provided for detecting presence of transient particulate in gas within a duct comprises(i) at least one emitter of illumination capable of being swept over essentially the entire cross-section of the duct from outside and the duct, and(ii) at least one detector for detecting presence and position of any sparkle of the illumination from any particulate within the illumination as the beam is being swept over the cross-section of the duct, wherein the detector is configured to be mounted externally of a duct as the beam is being swept over the cross-section of the duct and outside the zone projecting the swept area of the duct.
1 Assignment
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Accused Products
Abstract
An apparatus is provided for detecting presence of transient particulate in gas within a duct (1) comprises (i) at least one emitter (3) of illumination (4) capable of being swept over essentially the entire cross-section of the duct from outside and the duct, and (ii) at least one detector (6) for detecting presence and position of any sparkle of the illumination from any particulate within the illumination as the beam is being swept over the cross-section of the duct, wherein the detector is configured to be mounted externally of a duct as the beam is being swept over the cross-section of the duct and outside the zone projecting the swept area of the duct.
20 Citations
34 Claims
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1. An apparatus is provided for detecting presence of transient particulate in gas within a duct comprises
(i) at least one emitter of illumination capable of being swept over essentially the entire cross-section of the duct from outside and the duct, and (ii) at least one detector for detecting presence and position of any sparkle of the illumination from any particulate within the illumination as the beam is being swept over the cross-section of the duct, wherein the detector is configured to be mounted externally of a duct as the beam is being swept over the cross-section of the duct and outside the zone projecting the swept area of the duct.
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26. A method is provided for detecting presence of particulate in gas within a duct which comprises
(i) sweeping a duct with a beam of illumination from at least one emitter of illumination over essentially the entire cross-section of the duct, (ii) using at least one detector for detecting any sparkle of the illumination from the particulate within the beam where the detector is mounted externally of a duct and outside the zone projecting the swept area of the duct, and detecting any sparkle of the illumination from the particulate, whereby presence in the duct of any particulate present may be a determined.
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34. A method for detecting presence of particulate in gas within a duct which comprises
(i) sweeping stepwise a duct with a collimated beam of illumination from at least one emitter of illumination over essentially the entire cross-section of the duct, (ii) focusing at least one detector on the collimated beam for detecting any sparkle of the illumination from the particulate within the beam at each step of the beam, (iii) detecting any sparkle of the illumination from the particulate, (iv) setting a threshold level, (v) summing the detected level of sparkle from the detector at each step of the beam, and (vi) recording the detected sparkle, and (vii) determining presence, quantity and position in the duct of any particulate present
Specification