METHOD AND APPARATUS FOR REAL TIME GAS ANALYSIS

A method and apparatus for real time gas analysis involving determining individual concentrations of fluid constituents in a mixture of known constituents by measuring properties of such mixture via sensor array and solving a set of equations relating the individual gas concentrations to the measure...

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Bibliographische Detailangaben
1. Verfasser:	DRZEWIECKI, TADEUSZ M
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CALCULATING COMPUTING COUNTING DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HUMAN NECESSITIES HYGIENE INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MEDICAL OR VETERINARY SCIENCE METERING BY VOLUME PHYSICS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TESTING
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Beschreibung
Zusammenfassung:	A method and apparatus for real time gas analysis involving determining individual concentrations of fluid constituents in a mixture of known constituents by measuring properties of such mixture via sensor array and solving a set of equations relating the individual gas concentrations to the measured properties of the mixture, for the unknown individual gas concentrations or identities. The individual concentrations of four gases in a mixture are determined by: passing the mixture through a flowmeter (65), capillary (71), orifice (72) or sonic oscillator (76); transducing temperature (69), pressure (73, 74) and acoustic frequency measurements taken from the sensors; determining density (72), viscosity (71) and specific heat (76) of the mixture; forming three equations which respectively relate these three properties to individual gas concentrations; then solving the three equations under a condition requiring the sum of the concentrations to equal unity for the four unknown individual gas concentrations. A single oscillator can serve as both a sensor (flowmeter, acoustic velocimeter) and orifice.