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Flow analysis system and method

  • US 5,741,980 A
  • Filed: 01/16/1997
  • Issued: 04/21/1998
  • Est. Priority Date: 11/02/1994
  • Status: Expired due to Term
First Claim
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1. A flow analysis system comprising:

  • a sensor in communication with a conduit including a flow therein for transmitting a signal which varies depending on the characteristics of the flow in the conduit;

    a filter, responsive to said signal, tuned to pass a narrow band of frequencies proximate the resonant frequency of the sensor;

    means for generating an amplitude envelope of the filtered signal;

    means, responsive to the amplitude envelope, for calculating a plurality of flow indicator quantities representative of the flow in the conduit; and

    means, responsive to the flow indicator quantities, for determining the flow rate of the flow in the conduit.

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