A method and circuit arrangement for removing orbital drifting in a ndt / ndi - meter

摘要

A method and apparatus for removing orbital drifting on the display of the measured by eddy current or other continuous waves discloses. The circulating point which is to be a static point, it is possible, information, which the operator is required, in order to evaluate whether a smaller defect is present, concealing. Embodiments of the disclosed here upper oscillation blocking filter (10, 10 '') are tunable and are described, for effective reduce or eliminate of signals with frequencies of, the multiple of the operating frequencies are utilized, for example, which for the removal of the orbiting effects on the display.