Thermal flowmeter with temperature compensation
Patent 4475388 Issued on October 9, 1984. Estimated Expiration Date: 
October 7, 2002. 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.
October 7, 2002. 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 References 3891391 System for computing cardiac flow rates from thermodilution measurements Gas flow measuring apparatus Patent #: 4276773 InventorsAssigneeApplicationNo. 06/433411 filed on 10/07/1982US Classes:73/204.18, Including response characteristic or condition compensation73/118.2Intake air flowExaminersPrimary: Goldstein, HerbertAssistant: Tumm, Brian R. Attorney, Agent or FirmInternational ClassesG01F 1/698 (20060101)G01F 1/696 (20060101) Foreign Application Priority Data1982-01-11 JPAbstractA method for measuring the flow rate of fluid such as liquified petroleum gas fuel for an automobile fuel. A signal of the fluid flow rate and a signal of the fluid temperature are produced by using the signals from an electric heater and a first, second, and third temperature-dependent resistors in a signal processing circuit. The produced signals are supplied to a computer circuit to carry out modification, linearization, and multiplication by a conversion constant for linearization which is corrected regarding temperature characteristic. The result of calculation in the computer circuit is displayed on a display device. | |
