Abstract
An apparatus for sensing particulate matter in a fluid includes a substrate; and an integrated circuit electrically connected to the substrate, the integrated circuit including a photodetector. The apparatus includes a filter assembly including a particle filter aligned with the photodetector, and a filter housing for the particle filter, the filter housing defining a flow path for fluid through the particle filter. The apparatus includes a light source electrically connected to the substrate and positioned to illuminate the particle filter.
Original language | English |
---|---|
Patent number | WO2019115690 |
IPC | G01N 15/ 14 A I |
Priority date | 15/12/17 |
Publication status | Published - 20 Jun 2019 |