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Correcting for two-phase flow in a digital flowmeter

  • US 9,046,401 B2
  • Filed: 09/23/2013
  • Issued: 06/02/2015
  • Est. Priority Date: 11/26/1997
  • Status: Expired due to Fees
First Claim
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1. A flowmeter controller comprising one or more processing devices configured to:

  • receive sensor signals from a sensor that is connected to a vibratable flowtube for detecting motion of the vibratable flowtube as fluid flows through the flowtube;

    determine an apparent flow condition of a two-phase fluid mixture flowing through the conduit using characteristics of the sensor signal;

    determine an actual flow condition of the two-phase mass flow based on said apparent flow condition and an application of an error correction factor to the apparent flow condition;

    determine drive signal characteristics for a drive signal to be applied to a driver connected to the vibratable flowtube for driving movement of the flowtube; and

    output the drive signal.

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