METHOD OF MAKING OF EDDY CURRENT CONVERTER Russian patent published in 2006 - IPC G01N27/90 

FIELD: instrument engineering.

SUBSTANCE: method can be used for making converters intended for operation at high temperature in air medium. Ceramic frame is produced. Two circular recesses are cut in cross-section of the frame. First recess is cut out close to working end of frame and the second one is distant from the first one along axis of frame, which distance is equal or longer than its diameter for placing measuring and compensation inductance coils. At least two additional circular recesses are made between first and second main recesses. Coatings are applied onto external surfaces of coils to be flush-mounted with generating surface of frame. Material of coating has identical properties as material of frame. Frame and coatings are made porous. Longitudinal channels are made onto generating surface of frame and coatings excluding surface of working edge of frame. Heat-resistant materials are chosen for all the units of structure. Frame unit is placed into cavity of screening case. Micro-pores of frame and coatings together with additional recesses and channels form drainage channels which are constantly pumped through by inertial gas during operation.

EFFECT: widened temperature range of exploitation; improved exploitation resource.

2 dwg