Method and apparatus to measure particulate matter in gas
US5571945A · kind A · utility
Inventors
Key dates
| Filing date | Mar 13, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Mar 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0618
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for measuring the amount of particulate matter in a gas having a gas supply, a first particulate matter collector downstream of the gas supply and in gaseous communication with the gas supply, and a second particulate matter collector downstream of the gas supply and in gaseous communication with the gas supply. Gas from the gas supply to the second particular matter collector is passed through a particle remover to remove particulate matter prior to contact of gas from the gas supply with the second particulate matter collector. A pressure sensor is provided to measure differential pressure between the first particulate matter collector and the second particulate matter collector, and at least one pump to cause gas to pass from the gas supply to the first particulate matter collector and the second particulate matter collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.