MARKING AND READING SYSTEM

摘要

An electrode for use in industrial processes is provided with a mark. The marking apparatus comprises an information unit for providing a mark (110) representing some form of information relating to the electrode (100). The mark is arranged as a part of the electrode. A corresponding electrode mark reading apparatus for providing information related to an electrode comprises a radiation unit for directing radiation towards the electrode, a detection unit for detecting radiation reflected by or transmitted through at least a part of the electrode, and for converting said detected radiation into a converted signal. A decoding unit is adapted to transform the converted signal into a decoded signal. A part of the decoded signal is related to a mark on said electrode. Conversion means for converting said decoded signal into an electrode code is provided for obtaining code representing a feature related to the electrode.