ULTRASONIC TRANSDUCER AND ULTRASONIC FLOWMETER USING IT

PROBLEM TO BE SOLVED: To provide an ultrasonic transducer capable of propagating vibration of a piezoelectric body efficiently into a fluid to be measured. SOLUTION: The outer diameter of an acoustic adjustment layer 12 through a case 11 is reduced smaller than a top part 11a of the case 11. Hereby,...

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Bibliographic Details
Main Authors SATO MASATO, NIIMURA NORIO, ADACHI AKIHISA
Format Patent
LanguageEnglish
Published 30.06.2005
Edition7
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
PUBLIC ADDRESS SYSTEMS
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide an ultrasonic transducer capable of propagating vibration of a piezoelectric body efficiently into a fluid to be measured. SOLUTION: The outer diameter of an acoustic adjustment layer 12 through a case 11 is reduced smaller than a top part 11a of the case 11. Hereby, the directivity or the sensitivity distribution of a sound wave outputted from the acoustic adjustment layer 12 can be controlled, and stable flow measurement including a flow velocity characteristic of the fluid to be measured in a flow measuring part becomes possible. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030414462