METHOD AND APPARATUS FOR MEASURING CHARACTERISTICS OF SURFACE LAYER OF METALLURGICAL PRODUCT IN FLOW LINE

FIELD: processes and devices for measuring characteristics of surface layer of metallurgical product, for example of electroplated coating of steel strips. ^ SUBSTANCE: method comprises steps of irradiating product by means of irradiation 23 with predetermined wave length from irradiation source 24; directing irradiation normally relative to product surface and measuring energy of irradiation reflected from it in normal direction in order to eliminate changes of reflection coefficient caused by morphology characteristics of said surface. Such operations are performed by means of optical fibers whose ends are preliminarily freed from general focusing optics in order to place them mutually in parallel and close one to other as much as possible. ^ EFFECT: possibility for producing uniform-quality reproducible products. ^ 10 cl, 4 dwg