METAL DETECTOR Russian patent published in 1997 - IPC

FIELD: detection of small metal bodies and particles in products, materials and articles having low electric conductance, in products of food and pharmaceutical industries. SUBSTANCE: increased stability and sensitivity of metal detector are achieved thanks to usage of tie selection of two sequential pulses generated with passage of product with metal particle through sensitivity zone of primary eddy-current converter composed of two half-windings connected in series and spaced by certain distance one from another. EFFECT: increased stability and sensitivity of metal detector. 1 dwg