Method and apparatus for balancing the magnetic field detecting

Details Method and apparatus for balancing the magnetic field detecting Method and apparatus for balancing the magnetic field detecting

1980-01-17

1982-03-16

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

G01R 3302

Patent

active

043203418

ABSTRACT:
An apparatus for and a method of measuring the difference in intensity between two coplanar magnetic field vector components at two different points in space. The device is comprised of two interconnected, relatively large, loop patterns of opposite, flux cancelling, winding sense. One or both loops include a trimming element that is itself formed of two interconnected, relatively small, loop patterns of opposite, flux cancelling, winding sense. The device is analyzed for imbalance between the two large loops and is then balanced by placing a balancing superconducting disk of the proper characteristic in or near one of the two small loops of the trimming element. The so-trimmed apparatus forms a gradiometer of substantially improved mensuration.

REFERENCES:
patent: 3956690 (1976-05-01), Rorden
patent: 3976938 (1976-08-01), Hesterman

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