Accession Number : ADD001649

Title :   Permanent Magnet Type E.M. Current Meters.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Dewan,Rajinder N

Report Date : 05 Aug 1975

Pagination or Media Count : 5

Abstract : This device measures ocean flow current in water by use of two pairs of electrodes placed at right angles to each other in a magnetic field produced by a permanent magnet. Polarization of the Electrodes is prevented by exciting the electrodes with a square wave electrical current and taking current flow measurements of the water during intervals of zero bias. It is therefore an object of the invention to provide a current flow measuring device which will measure current flow over a long period of time without detrimental effects due to polarization of the detector electrodes.

Descriptors :   *Flowmeters, *Patents, Permanent magnets, Electrodes, Depolarization, Fluid flow, Oceanographic equipment, Ocean currents

Subject Categories : Physical and Dynamic Oceanography
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE