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Method of determining values of operating parameters of a centrifuge

  • US 5,736,054 A
  • Filed: 02/01/1995
  • Issued: 04/07/1998
  • Est. Priority Date: 08/13/1993
  • Status: Expired due to Fees
First Claim
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1. A method of determining an operating parameter of a centrifuge selected from a degree of solids filling and a degree of liquid filling, comprising the steps of:

  • (a) supplying a centrifuge with a suspension of solids in a liquid, and driving said centrifuge to discharge liquid of said suspension and collect said solids;

    (b) detecting vibration of said centrifuge resulting from rotation of a centrifuge rotor and producing electrical signals of a frequency and amplitude representing said vibration and having a frequency spectrum characteristic of operation of said centrifuge, presence and absence of said suspension, and characteristics of said liquid and solids in said centrifuge;

    (c) subjecting said electrical signals to a frequency spectrum analysis and isolating from said frequency spectrum by said analysis a certain selected frequency; and

    (d) determining said parameter selected from a degree of solids filling and a degree of liquid filling by evaluating a change in amplitude of said certain selected frequencies over a time interval.

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