Magnetic field generating device for electromagnetic flowmeter of residual magnetization type
US4736634A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Dec 16, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/586
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field generating device for an electromagnetic flowmeter of the residual magnetization type which comprises a pair of first yokes having one of their end faces disposed opposite to each other on both sides of a magnetic gap including a fluid conduit of a non-magnetic material, a core disposed between the other end faces of the first yokes, a coil wound around the core, and at least one second yoke in direct contact with at least one of the first yokes and in direct contact with the associated end face of the core. The second yokes are made of a magnetic material having low electrical conductivity and high permeability. The core has an axial length shorter than that of the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.