Electronic Metal Flaw Detector

A non-destructive electromagnetic device which introduces eddy current in a par (s) to be inspected. Changes in the current flow caused by surface variations in the part are reflected into a nearby coil(s) where they are detected and measured by suitable instrumentation which is provided. See also fluorescent penetrant inspection unit; magnetic inspection unit (as modified) ; transducer, ultrasonic test; x-ray apparatus, radiographic, industrial.