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Mass flow meter configured with computational modeling for use with different fluids

  • US 9,239,257 B2
  • Filed: 03/20/2015
  • Issued: 01/19/2016
  • Est. Priority Date: 09/21/2012
  • Status: Active Grant
First Claim
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1. A mass flow meter system for immersion in fluid flow comprising:

  • an elongate velocity sensor probe comprising a Resistance Temperature Detector (RTD) having a heated length and a proximal temperature sensor adjacent to a proximal end of the heated length, an active region of the proximal temperature sensor located at a first distance from the proximal end of the heated length, the first distance being equal to or less than about three times a diameter of the velocity sensor probe; and

    a computer processor programmed to calculate mass flow rate based on a computational model corresponding to a relationship of heat conduction in the velocity sensor probe and convection of fluid flow relative to electrical power supplied to the RTD, using a first temperature measurement from the RTD and a second temperature measurement from the proximal temperature sensor with the second temperature measurement used as a boundary condition in the computational model.

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