Variable reluctance magnetic sensor with pole piece and shell pr

Details Variable reluctance magnetic sensor with pole piece and shell pr Variable reluctance magnetic sensor with pole piece and shell pr

1986-02-28

1987-10-13

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Displacement

324174, 324179, 324262, 310168, 336 45, 336221, G01B 0714, G01P 0342

Patent

active

047001330

ABSTRACT:
A variable reluctance magnetic speed sensor senses the speed of a rotating gear (12). A ferrous outer cylindrical shell (22) extends axially and has a magnet (14) at one axial end and a coil (16) at the other axial end. An inner pole piece (4) in the coil (16) directs magnetic flux across a gap to the gear teeth (10), which flux is returned by the outer pole piece shell (22) to the magnet (14). Particular pole piece gap spacings are disclosed together with various pole piece constructions.

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Electro Corporation Catalog No. 83AS103, Model 3111A, 1845 57 Street, P.O. Box 3049, Sarasota, Fla. 33578-3049, 1983.
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A Technical Applications Handbook, "Sensing and Controlling the Industrial World", Electro Corporation, 1845 57 Street, P.O. Box 3049, Sarasota, Fla. 33578-3049, 1981.

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