The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2024
Filed:
Mar. 13, 2018
Sensirion Ag, Stäfa, CH;
Frank Gütle, Stäfa, CH;
Ulrich Leidenberger, Stäfa, CH;
{hacek over (Z)}eljko Mr{hacek over (c)}arica, Stäfa, CH;
Stefan Kostner, Stäfa, CH;
Stefan Thiele, Stäfa, CH;
Sensirion AG, Stäfa, CH;
Abstract
A particulate matter sensor device comprises an enclosure () defining a flow channel (), a radiation source () 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 () for detecting at least part of said radiation after interaction with the particulate matter. The sensor device comprises a flow modifying device () arranged upstream of the radiation detector and/or radiation source so as to reduce particulate matter precipitation onto the radiation detector, the radiation source and/or the channel wall sections in their proximity. The invention also relates to a method of determining parameters of particulate matter in an aerosol sample by using such a particulate matter sensor device.