In an error correcting method and an apparatus therefor using Hamming codes, a frame regulated by a synchronous network is divided into L blocks in the direction of row. Also proposed is a magnet separator for realizing the method. This set is then stored instead of the raw event ID and used for all subsequent analyses of the events. An insert may include an outside wall configured to be fitted to the opening of the first mounting plate and may include an inside wall that defines another opening through which the inlet of the fluid discharge device may be fitted. This control signal is then transmitted by a transmitter, via a radio frequency channel, to a controller.