Noninvasive dielectric sensor and technique for measuring polymer properties
US5208544A · kind A · utility
48Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1990 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Sep 26, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/2635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor which allows dielectric measurements to be made on a high temperature product such as a molten plastic flowing in a conduit. It comprises a ceramic cylinder with an interdigitated electrode capacitor patterned into the inside wall. Uses of the sensor include continuous determination of copolymer composition and polymer viscosity (molecular weight) in a completely non-obstructive manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.