Patent ID: 7068359

Claim:
A contactless system for measuring centricity and diameter, said system comprising: i) an optical measuring device for determining an external diameter and a position of a cable in an optical measuring plane, the optical measuring plane being perpendicular to and transverse to a central axis Z of a measuring device, wherein the cable comprises a conductor with insulating jacket and is pulled in the direction of the central axis Z through the measuring device; ii) an inductive measuring coil arrangement for determining the position of the conductor in an inductive measuring plane, the inductive measuring plane being perpendicular to and transverse to the central axis Z of the measuring device; and iii) means for computing the centricity of the conductor inside the jacket based on the position of the cable, determined with the optical measuring device, and the position of the conductor, determined with the inductive measuring coil arrangement, wherein measuring coils of the inductive measuring coil arrangement are arranged in pairs or cut in half with respect to the optical measuring plane, said measuring coils determining a field intensity in front of the optical measuring plane and a field intensity behind the optical measuring plane, said inductive measuring coil arrangement correlating the field intensities in front of and behind the optical measuring plane to determine a field intensity in an active inductive measuring plane, said active inductive measuring plane coinciding with the optical measuring plane to form a joint, active measuring plane M.