Method and apparatus for sampling and measuring a characteristic of flowing granular material
US4180331A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1976 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Apr 19, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0618
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for sampling and optically measuring a selected characteristic of flowing granular material in which an optical window located at one end of a hollow sight tube is disposed in the material stream at an angle with respect thereto. A dam is carried by the sight tube downstream of the window to retard material flow and cause material to collect on the window surface. The selected material characteristic may then be measured as a function of an optical characteristic of the material as viewed through the sight tube and window. An air nozzle is disposed adjacent the window to remove the collected material sample at the end of a measurement sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.