Data processing: measuring – calibrating – or testing – Calibration or correction system – Fluid or fluid flow measurement
Reexamination Certificate
2007-07-10
2007-07-10
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Fluid or fluid flow measurement
Reexamination Certificate
active
10444249
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 (CF0(1+aF+bF2+cF3)), 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)2). The sensor and split flow correction factors may be used independently of each other in some embodiments.
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Lu Shiliang
Tison Stuart A.
Barlow John
Celerity, Inc.
Lowrie Lando & Anastasi, LLP
Pretlow Demetrius
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