Fluid flow measurement and control

A controller in a fluid delivery system controls magnitudes of pressure in a first volume and a second volume. The first volume is of a known magnitude. The second volume is of an unknown magnitude and varies. The controller estimates a temperature of gas in the first volume and a temperature of gas...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Scarsella, Michael J, Powers, Benjamin G, Ambrosina, Jesse E
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROLLING 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 HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS REGULATING SEPARATION SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TRANSPORTING
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Beschreibung
Zusammenfassung:	A controller in a fluid delivery system controls magnitudes of pressure in a first volume and a second volume. The first volume is of a known magnitude. The second volume is of an unknown magnitude and varies. The controller estimates a temperature of gas in the first volume and a temperature of gas in the second volume based on measurements of pressure in the first volume and measurements of pressure in the second volume. The controller then calculates a magnitude of the second volume based on measured pressures of the gases and estimated temperatures of gases in the first volume and the second volume.