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Correcting for two-phase flow in a digital flowmeter

  • US 20030154804A1
  • Filed: 01/10/2003
  • Published: 08/21/2003
  • Est. Priority Date: 03/23/2000
  • Status: Active Grant
First Claim
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1. A flowmeter comprising:

  • a vibratable conduit;

    a driver connected to the conduit and operable to impart motion to the conduit;

    a sensor connected to the conduit and operable to sense the motion of the conduit and generate a sensor signal; and

    a controller connected to receive the sensor signal, the controller being operable to;

    generate a raw mass-flow measurement from the sensor signal;

    detect a single-phase flow condition and process the raw mass-flow measurement using a first process during the single-phase flow condition to generate a first mass-flow measurement; and

    detect a two-phase flow condition and correct the raw mass-flow measurement using a second process during the two-phase flow condition to generate a second mass-flow measurement.

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