ULTRASONIC VIBRATOR AND FLUID FLOW MEASUREMENT APPARATUS EMPLOYING THE SAME

PROBLEM TO BE SOLVED: To provide an ultrasonic vibrator which is not short-circuited by a conductive foreign material or the like and the performance of which is excellently maintained at all times. SOLUTION: The ultrasonic vibrator fitted to a measurement flow path 11 is configured by fixing a side...

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Bibliographic Details
Main Author NAKANO SHIN
Format Patent
LanguageEnglish
Published 16.08.2007
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 vibrator which is not short-circuited by a conductive foreign material or the like and the performance of which is excellently maintained at all times. SOLUTION: The ultrasonic vibrator fitted to a measurement flow path 11 is configured by fixing a side of an upper electrode 3 of a piezoelectric body 2 to a top wall inner face of a conductive case 1 with ceiling and fixing a conductive terminal board 5 to a lower opening of the case 1, and an electric insulating member 13 is interposed between the case 1 and the measurement flow path 11. Thus, the case 1 and the measurement flow path 11 are not short-circuited by a foreign material such as conductive processing burr produced at working the measurement flow path and the ultrasonic resonator with high reliability can be obtained. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20060022020