Method and apparatus for determining kinematic viscosity through the transmission and reception of ultrasonic energy
US10801937B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Sep 16, 2016 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Dec 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02818
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for determining a fluid's kinematic viscosity from ultrasonic energy that has passed through the fluid of unknown viscosity along an acoustic path of known length. A computer of the apparatus determines a characteristic frequency of a received electrical signal associated with the ultrasonic energy and measures the fluid's velocity of sound. The kinematic viscosity of the fluid is determined by the computer on a continuous basis based on the characteristic frequency and the sound velocity. A method for determining a fluid's kinematic viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.