Apparatus for measuring viscosities
US11662289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2018 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Feb 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/8495
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for measuring viscosities of fluids is described, comprising: a measuring system (1) having at least one measuring tube (5), which in measurement operation is filled with a fluid or through which fluid is flowing, and which has at least one tube section (4, 7) excitable to execute oscillations; an exciter system (1) for exciting at least two wanted oscillation modes of different frequencies, at each of which at least one of the tube sections (4, 7) is excited to execute oscillations, especially resonant oscillations; a sensing system (3), which is embodied in such a manner that it determines for the wanted oscillation modes excited in measurement operation, in each case, a frequency and a damping, especially a frequency, an amplitude and a damping, of a resulting oscillation of at least one tube section (4, 7) excited to execute oscillations of one of the wanted oscillation modes, and an evaluation system (15), which is embodied in such a manner that it determines based on calibration data stored in a memory (17) for the individual wanted oscillation modes excited in measurement operation, in each case, based on an excitation determined frequency and damping, especiall…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.