MAGNETIC SENSOR FOR DETECTING BREAKS IN A STEEL ROPE INCLUDING MULTIPLIER FOR ELIMINATING NOISE

摘要

Apparatus for detecting wires in a steel wire winding rope in which the rope is passed through a magnetic field and sensing coils are employed to detect any magnetic dipoles created between the ends of broken wires in the rope. In order to minimize the effect of noise on the ultimate recordings the outputs of the sensing coils are multiplied in an analogue multiplier.