Eddy current position indicating apparatus for measuring displac

Details Eddy current position indicating apparatus for measuring displac Eddy current position indicating apparatus for measuring displac

1975-02-04

1977-09-06

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

176 19R, G01R 3312

Patent

active

040471039

ABSTRACT:
Apparatus for measuring displacements of core components of a liquid metal fast breeder reactor by means of an eddy current probe. The active portion of the probe is located within a dry thimble which is supported on a stationary portion of the reactor core support structure. Split rings of metal, having a resistivity significantly different than sodium, are fixedly mounted on the core component to be monitored. The split rings are slidably positioned around, concentric with the probe and symmetrically situated along the axis of the probe so that motion of the ring along the axis of the probe produces a proportional change in the probes electrical output.

REFERENCES:
patent: 2773386 (1956-12-01), Swickard, Jr.
patent: 3356933 (1967-12-01), Stettler
patent: 3484678 (1969-12-01), Church
patent: 3891918 (1975-06-01), Ellis
patent: 3893651 (1975-07-01), Uecker

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