Optical particle counter
US10900894B2 · kind B2 · utility
1Cited by
15References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2016 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8578
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical particle counter determines the velocity of particles passing through a particle detection zone, and thereby the velocity of gas flow, from both the measured time of flight of discrete particles and also the size of intensity peaks of scattered light. This is used to determine particle concentration and may be used to control an optional fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.