Leakage - Flux Instruments

The leakage-flux probe method is used on ferrous, hot-rolled surfaces with round cross-sections. On the CIRCOFLUX, the AC field method is used for highly sensitive detection of longitudinal surface flaws, predominantly on hot-rolled bar stock. On the ROTOMAT/TRANSOMAT, the DC field method is used for detection of external and internal flaws on hot-rolled tubes. Longitudinal flaws or transverse flaws are detected, depending on the magnetization direction. API and ISO Standards describe the method.