Magnetostrictive position indicator

摘要: The position of a movable member is measured without the establishment physical contact with such member. A magnetic field generator, which provides localized special geometry, mounted on and an elongated ferromagnetic positioned adjacent parallel to path movement will produce change in Young's modulus elasticity region sonic strain pulses launched along be partly reflected from this discontinuity. time required for pulse travel given point discontinuity partially therefrom returned known detection provide measure generator