Magnetic circuit arrangement for a transducer
US6883387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | May 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/8495
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The magnetic circuit arrangement, which is preferably used in a fluid-measuring transducer, comprises at least one coil which is traversed in operation by a current. It further comprises two armatures that are fixed to two flow tubes vibrating in phase opposition. The coil is float-mounted by means of a holder to a double flow tube configuration formed by the flow tubes. The armatures are shaped and aligned relative to each other in such a manner that magnetic fields produced by means of the magnetic circuit arrangement are essentially concentrated within the magnetic circuit arrangement, whereby the latter is also largely insensitive to extraneous magnetic fields. The magnetic circuit arrangement is marked by a long service life and, particularly if the transducer is used for fluids with high and/or varying temperatures, by constantly high accuracy in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.