Electromagnetic flow meter using a pulsed magnetic field
US4709583A · kind A · utility
12Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Oct 28, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow meter comprises electrodes (16, 18), induction windings (12, 14), a winding driver circuit (20), and a processor circuit (22). The winding excitation current is a combination of a current of period T.sub.1 and a current of period T.sub.2, where T.sub.2 >T.sub.1. The processor circuit (22) processes the voltage signal sent by the electrodes and generates intermediate measurement signals of periods T.sub.1 and T.sub.2. These signals are then used to generate a correction signal for removing the relaxation effect from the measurement signal S.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.