Particulate mass measuring method with intrinsic correction for volatilization losses
US6651480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0618
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The mass of particulate matter in a particle laden gas stream is measured using a single mass detector. The particle laden gas stream and a substantially identical but particle-free gas stream alternately engage the mass detector during successive measurement time periods. A difference between a reading provided by the mass detector for a current measurement time period and a reading provided by the mass detector for a consecutive measurement time period is determined. This difference intrinsically corrects for volatilization losses occurring during the current measurement time period. A measure of the mass or concentration of particulate matter in the particulate laden gas is determined from this difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.