Position detector without mechanical contact - partic. useful for detecting position of rods in a nuclear reactor

Abstract

Abstract A primary winding is fed with a source of alternating current. The secondary winding is coupled inductively with the primary winding and subdivided into elementary coils, stepped along the path, and connected electrically in apirs. The movable element has a magnetic part which changes the inductive coupling. The improvement consists of subdividing the primary winding into an equal number of elementary coils as the secondary winding and associating each secondary coil with a primary coil, the two coils being wound one on the other. Each pair of coils is surrounded by a magnetic screen. Flux leakage is reduced and precision is increased. The close coupling gives concn. of the magnetic field and a signal which facilitates electronic treatment.

Inventors

No inventors recorded.

Bibliographic Details