Method for measuring the pressure and/or molar mass of a gas in a housing, and corresponding measurement assembly

The sensor has a piezo-electric type transducer (5) generating an acoustic excitation signal to vibrate a cylindrical enclosure (1) i.e. fuel rod, and radioactive tracer gas (2) e.g. helium, and detecting an acoustic characteristics response signal of vibration of the enclosure and gas. An electrica...

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Bibliographische Detailangaben
Hauptverfasser:	BARON DANIEL, FERRANDIS JEAN-YVES, ROSENKRANTZ ERIC, LEVEQUE GERARD, LAUX DIDIER
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The sensor has a piezo-electric type transducer (5) generating an acoustic excitation signal to vibrate a cylindrical enclosure (1) i.e. fuel rod, and radioactive tracer gas (2) e.g. helium, and detecting an acoustic characteristics response signal of vibration of the enclosure and gas. An electrical system (8) excites the transducer and analyzes the response signal. Transmission frequency bands of the signals have a width of 25 percentage of f0 that is a free vibration frequency of a wall (10) at which the sensor is coupled, during measurement of a gas physical parameter e.g. molar mass. An independent claim is also included for a method of measuring a physical parameter of a gas in an enclosure.