Fluid measuring device
US11852608B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 22, 2021 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Apr 22, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid measuring device for determining at least one characteristic property of a fluid includes a measuring tube having a fluid duct and a measuring section in which an area of a measuring tube wall is configured as a waveguide for surface acoustic waves which forms an interface to the fluid. At least two piezoelectric transducers are arranged in direct contact with an outer surface of the waveguide and one of which serves as a transmitter for exciting acoustic waves and at least one as a receiver for receiving acoustic waves. Acoustic waves excited by the transmitter can propagate as a volume wave through the fluid, and the piezoelectric transducers are configured to be elastically flexible while retaining their function in that the piezoelectric transducers have strip-shaped piezoelectric elements arranged parallel to each other, are rigid per se and between which a respective layer of an elastic material is arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.