Inductive displacement sensor with short-circuit ring of non-fer

Details Inductive displacement sensor with short-circuit ring of non-fer Inductive displacement sensor with short-circuit ring of non-fer

1997-06-19

1999-11-30

Ballato, Josie

Electricity: measuring and testing

Magnetic

Displacement

G01B 714

Patent

active

059948957

ABSTRACT:
An inductive displacement sensor comprises a magnetically conductive housing, a coil located within the conductive housing, and a solenoid plunger movable within the coil. A ring-shaped air gap is formed between the solenoid plunger and the conductive housing. A short-circuit ring surrounds the solenoid plunger and is located on the outside of the conductive housing and in front of the ring-shaped air gap. An electronic unit is connected to the coil that measures the displacement-dependent inductance of the coil.

REFERENCES:
patent: 4859942 (1989-08-01), Charton et al.
patent: 5302894 (1994-04-01), Hrubes

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