Patent ID: 6192096
Filing Date: 2001-02-20
Classification: G01D,G21C,Y02E

Abstract:
A magnetostrictive wire control rod position detector assembly for detecting the position of a movable member within a cylindrical member, comprising:a ring-shaped magnet or ring-shaped magnets mounted on a non-magnetic portion of said movable member which is free to move in the longitudinal direction on the inside of said cylindrical member and is at least partly composed of a non-magnetic material;a plurality magnetostrictive wire detectors longitudinally mounted on the outer circumference of said cylindrical member, which is provided in a predetermined place with a receiver which detects torsional waves; anda pulsed current generator circuit which supplies a pulsed current from said receiver end of said magnetostrictive wire detector to the magnetostrictive wire of said magnetostrictive wire detector.