| 摘要 |
A rotor system including a rotor having a plurality of cavities disposed radially and in concentric array about the rotational axis of the rotor for receiving and retaining respective quantities of liquid, each cavity having an overflow through which liquid in excess of the volumetric capacity of the cavity is expelled upon rotation of the rotor, and displacement means of known displacement volume movable into each cavity upon rotation of the rotor whereby a known quantity of liquid is displaced from each cavity and expelled from the rotor into appropriate receptacles. The method disclosed includes the step of admitting gross quantities of liquid to the rotor cavities initially and expelling the liquid in excess of the cavity volume by rotating the rotor. Subsequently, in accordance with the disclosed method, the rotor is rotated with a displacement body in each cavity to expel a further, but known, quantity of liquid from each cavity.
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