A high speed AD converter includes a series of encoder sections for converting a thermometer code to a gray code and an error signal production section for detecting a babble error in the gray code and generating an error signal indicating such a babble error. A heating system heats an outside surface of the discs so that the discs can separate the first group of materials from the material stream during cold environmental temperatures. A component base is composed of the grain boundary-insulated semiconductor ceramic. The power input interface electronically connects with an electrode of the external battery. The guide has at least one outlet opening having an outlet gap configured so that an outlet air flow can be guided out parallel to the undersurface from a radiator. In vulcanizing operation, the discharge groove functions as a discharge path to effectively discharge gas, which remains between a tire tread and the segment, to the side surfaces.