Moisture and density sensor
US5977780A · kind A · utility
28Cited by
16References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jun 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N22/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microwave resonator for connection to an instrument for measuring the density and/or moisture profile in the longitudinal direction of a sample, which microwave resonator has a through-hole (3) at right angles to its area extent, which through-hole (3) is bounded by metallic walls (4) extending in the longitudinal direction, distinguishes itself in that the interior (1) of the resonator is essentially flat, with a thickness which is considerably less than the lateral dimensions at right angles to it, and in that the resonator is filled with a dielectric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.