Sensor for measuring magnetic field changes

Details Sensor for measuring magnetic field changes Sensor for measuring magnetic field changes

1978-08-25

1980-10-21

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

324228, 324239, G01B 714, G01R 3306

Patent

active

042296960

ABSTRACT:
A sensor for measuring the change of a magnetic field comprises a magnet for generating a constant magnetic flux, and magnetically conductive members magnetically coupled to the magnet for producing first and second magnetic fields, the first magnetic field passing through an object and the second magnetic field not passing through said object, the object being of a material which influences the first magnetic field. A magnetic field measuring device located in the second magnetic field to measure the second magnetic field and to indicate a change in the second magnetic field as a result of the first magnetic field being influenced by the object. A magnetically conductive outer shielding member, which may be one of the magnetically conductive members, is provided.

REFERENCES:
patent: 2903645 (1959-09-01), Wright et al.
patent: 3440527 (1969-04-01), Steingroever

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