Method of determination of gas properties at reference conditions
January 5, 2010. 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 3913379 Bridge circuit with drift compensation Bridge circuit arrangement for a gas detection instrument Multicomponent thermal conductivity analyzer Modulated fluid detector Method of and apparatus for nondestructively determining the composition of an unknown material sample Dynamic current drive method for powering thermal conductivity detectors Flow sensor Flow sensor Flow sensor InventorAssigneeApplicationNo. 458263 filed on 12/28/1989US Classes:702/136, Thermal related property73/204.16, By control of a separate heating or cooling element73/204.17, With distinct heating circuitry for a self-heated sensor374/44Thermal conductivityExaminersPrimary: Teska, Kevin J.Attorney, Agent or FirmInternational ClassesG06F 015/20G01K 017/08 AbstractA method of determination of gas properties at reference conditions of temperature and pressure. This determination is needed in systems including mass flow meters, combustion control systems, gas meters and the like. The system disclosed enables the determination of properties including specific heat and thermal conductivity at reference conditions.Field of SearchIncluding digital or pulse measuring circuitryIncluding detail of feedback or rebalancing circuitry By control of a separate heating or cooling element With distinct heating circuitry for a self-heated sensor Thermoelectric junction Resistive element With substrate carrier (e.g., thin film) DETERMINATION OF INHERENT THERMAL PROPERTY (E.G., HEAT FLOW COEFFICIENT) Thermal conductivity THERMAL CALIBRATION SYSTEM HEAT FLUX MEASUREMENT With combustion engine By thermoelements connected in series opposition At plural zones | |
