Faraday effect fluid flow and direction indicator

Details Faraday effect fluid flow and direction indicator Faraday effect fluid flow and direction indicator

1975-03-19

1976-03-02

Gill, James J.

Measuring and testing

Navigation

Ship's log

73189, 73194EM, G01P 508

Patent

active

039409830

ABSTRACT:
A pair of concentric electrodes are mounted at one end of a housing fixedly supported on a body and positioned in a fluid, the flow of which is to be measured relative to the body. A permanent magnet is rotatably mounted in the housing proximate to the electrodes and is rotatably driven. Reference signal generating means is also mounted in the housing to generate a pair of pulsating reference signals having a predetermined phase relationship with each other and with the rotation of the magnet. Alternating current signals are generated between the electrodes, these signals having a magnitude and phase in accordance with the speed and direction of fluid flow relative to the electrodes. These signals are fed from the electrodes through leads, which are positioned coaxial with the magnet rotation axis, to detector circuits which in conjunction with the reference signals generate signals in accordance with the speed, acceleration and direction of fluid flow, these signals being utilized to drive appropriate indicators.

REFERENCES:
patent: 2907207 (1959-10-01), Rinia
patent: 3777561 (1973-12-01), Lewis

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