The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2007
Filed:
May. 23, 2003
Stuart A. Tison, McKinney, TX (US);
Shiliang LU, Plano, TX (US);
Stuart A. Tison, McKinney, TX (US);
Shiliang Lu, Plano, TX (US);
Celerity, Inc., Austin, TX (US);
Abstract
Systems and methods for correcting measurements of fluid flow using device-specific information to compensate for differences between individual devices of the same design. In one embodiment, a method includes providing device-specific calibration data; sensing a fluid flow; computing a measured fluid flow based on the sensed fluid flow, and correcting the measured fluid flow based on the device-specific calibration data. More particularly, the fluid flow measurement is corrected using correction factors that compensate for the use of a gas that is different from the calibration gas (CF(1+aF+bF+cF)), for device variations in sensor sensitivity (1+αΔR), and for variations in the split flow of fluid through the flow meter (1−βΔADC(Sp/100)). The sensor and split flow correction factors may be used independently of each other in some embodiments.