In-line moisture-content measurement of ceramic materials in ceramic article manufacturing
US8056401B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2009 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jul 24, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B17/0081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In-line systems for and methods of measuring the moisture content of ceramic material within an extrusion system used to form ceramic articles are disclosed. One method includes arranging, relative to the extrusion system, at least one radio-frequency (RF) sensor system having an RF antenna, and generating through the RF antenna an RF field that resides substantially entirely within the ceramic material. The method also includes, in response to the RF field interacting with the ceramic material, generating in the RF sensor system a signal representative of a raw moisture-content measurement of the ceramic material. The method also includes generating calibration data by performing RF moisture-content measurements on samples of the ceramic material having different known moisture contents, and establishing a calibrated moisture-content measurement using the raw moisture-content signal and the calibration data. Both contact and non-contact systems and measurement methods are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.