Methods and systems for fluid identification and flow rate determination
December 22, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAnemometer compensator linearizer Anemometer compensator linearizer Personal air sampling system Thermal flowmeter with temperature compensation Method and apparatus for the direct measurement of thermal energy transferred by a fluid medium Method of calibrating and linearizing the output of fluid measuring instruments Instrumental error compensation circuit for flow meter Gas detecting apparatus Transducer linearizing system Gas sensing instrument InventorApplicationNo. 361915 filed on 12/22/1994US Classes:702/45, Flow metering73/204.11, Thermal type73/204.16, By control of a separate heating or cooling element73/204.26, With substrate carrier (e.g., thin film)73/861.01, With indirect temperature or density compensation702/113Of mechanical systemExaminersPrimary: Voeltz, Emanuel T.Assistant: Choi, Kyle J. Attorney, Agent or FirmForeign Patent References
International ClassG01F 001/688AbstractMethods and systems for determining the identity and flow rate of a fluid are provided. Linearized output signals are provided. To determine fluid flow, a test fluid is passed through a conduit. A heater associated with the conduit is maintained a temperature greater than the temperature of the conduit in the presence of the test fluid. A measuring voltage is generated, wherein the measuring voltage is indicative of the voltage required to maintain the heater at the specified temperature. A data set is provided to a computer, which compares the measuring voltage with a reference voltage and determines the identity of the test fluid. Further, a flow function is applied to the data set and the fluid flow rate is calculated.Other References
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