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Systems and methods for measurement of low liquid flow rates

  • US 20050044951A1
  • Filed: 08/27/2003
  • Published: 03/03/2005
  • Est. Priority Date: 08/27/2003
  • Status: Active Grant
First Claim
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1. A system for measuring flow rate of a liquid, comprising:

  • a collection vessel coupled to a supply valve and to a drain valve;

    a weir providing a passage for the liquid into the collection vessel, wherein the liquid travels from the bottom to the top of weir and overflows into the collection vessel;

    a load cell coupled to the collection vessel and generating a load cell signal indicating the mass of the collection vessel with the collected liquid; and

    a controller converting the load cell signal to indicate the liquid flow rate into the collection vessel.

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