Rotor having magnet mountable seats for rotor identification, and centrifuge using the same

摘要

Predetermined magnet mountable seats are provided on the lower portion of a rotor at equal angular intervals around the central axis of the rotor so that magnets may be mounted in one or more of the magnet mountable seats in an array pattern. Various array patterns may be provided by different combinations of presence and absence of magnets depending on the types of rotors. Arranged on a fixed mount in opposing relation with the array of magnet mountable seats are magnetic sensors along a circle around the central axis at angular intervals equal to or smaller than the angular intervals of the magnet mountable seats. A microprocessor identifies the type of rotor by detecting the array pattern of magnets on the basis of detected outputs from the magnetic sensors.