DISPOSITIVO GERADOR DE GAS E PROCESSO PARA A GERACAO DE UM FLUXO DE GAS

A device and related method adapted to generate a gas flow containing a precise amount of impurities for calibrating analysers or the like; e.g. hygrometers. The device comprises a membrane (11) through which an impurity gas e.g. water vapour permeates and mixing means to make a mixture of said impu...

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Bibliographische Detailangaben
Hauptverfasser:	FRANCOIS MERMOUD, MICHAEL D. BRANDT
Format:	Patent
Sprache:	por
Schlagworte:	CONTROLLING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TESTING
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Beschreibung
Zusammenfassung:	A device and related method adapted to generate a gas flow containing a precise amount of impurities for calibrating analysers or the like; e.g. hygrometers. The device comprises a membrane (11) through which an impurity gas e.g. water vapour permeates and mixing means to make a mixture of said impurity gas and a vector gas sweeping said membrane (11). The pressure of said mixture is substantially constant, but adjustable, to enhance the accuracy of the device.