SYSTEM OF CONTACTLESS ROTATIONAL SPEED MEASUREMENT Russian patent published in 2017 - IPC G01P3/488 

FIELD: measuring equipment.

SUBSTANCE: system of the contactless rotational speed measurement comprises a bladed disk rigidly mounted on the controlled object shaft and made of a magnetic carbon steel, and representing an exactly balanced item; at least, four inductive sensors; an electronic module and screened cables with connectors. Each inductive sensor is designed as two inductive coils, the bodies of which are mounted on the bracket secured to the body flange of the controlled object parallel to each other with the possibility for the bladed disk to pass between the inductive coils when the shaft rotates. The bladed disk has hollows, the number and size of which depend on its outer diameter and conditions of full overlapping the magnetic field flow by the disk blades, when the shaft rotates, and the gap magnitude between the outer surfaces of the disk blades and the inductive coils is, at least, not less than 5 mm.

EFFECT: increasing the system sensitivity.

5 dwg