The distance measurement inductive without contact, in particular for the detection of the level of a bath of liquid metal

摘要

A.systeme for distance measurement inductive without contact, in particular for the detection of the level of a bath of liquid metal; / p & & p & b.appareil characterizes in that it comprises an oscillator 44, an amplifier 48, a circuit l - c comprising a detection coil 16 and a capacitor 46 connecting the output of the oscillator at the input of the amplifier, so that the amplitude of the signal appearing at the output of the amplifier varies as a function of the distance between the coil of detection and a metallic object placed in the vicinity of that - latter, and means for indicating the amplitude of this output signal, that is - to - say the distance between the coil of detection and the metallic place in the vicinity of that - ci; / p & & p & c.l' invention relates to a system for distance measurement inductive without contact, in particular for the detection of the level of a bath of liquid metal.