Electrical system for electromagnetically measuring flow of fluid
US3955413A · kind A · utility
Inventors
Key dates
| Filing date | Mar 27, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Mar 27, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical system for measuring the speed of flow in a body of a fluid includes a current generator for energizing a coil and establishing a magnetic field in the body of the fluid. A current switching circuit connected between the current generator and the coil, cyclically reverses direction of current flow through the coil to reverse the magnetic field. The switching circuit includes energy storage capacitors for storing energy released by the coil during one half of each cycle and for returning the stored energy to the coil during the next half cycle. A control pulse generator supplies control pulses for cyclically controlling the reversal of current flow and the storage and release of energy in the capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.