PARTICULATE MATTER SENSOR DEVICE

A particulate matter sensor device comprises an enclosure (21) defining a flow channel (2) between a primary flow inlet (11) and a flow outlet (12), a radiation source (3) for emitting radiation into the flow channel for interaction of the radiation with particulate matter in an aerosol sample in th...

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Bibliographische Detailangaben
Hauptverfasser:	GÜTLE, Frank, MRCARICA, Zeljko, THIELE, Stefan, LEIDENBERGER, Ulrich, KOSTNER, Stefan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A particulate matter sensor device comprises an enclosure (21) defining a flow channel (2) between a primary flow inlet (11) and a flow outlet (12), a radiation source (3) for emitting radiation into the flow channel for interaction of the radiation with particulate matter in an aerosol sample in the flow channel, and a radiation detector (4) for detecting at least part of said radiation after interaction with the particulate matter. An additional flow opening (511, 511a, 512, 513, 514) creates an additional flow into the flow channel. The additional flow opening is arranged in a wall section that radially delimits the flow channel upstream of the radiation detector and/or of the radiation source and being configured to create its additional flow so that the additional flow sheaths the radiation detector and/or the radiation source.