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HK1017067A1 - Ultrasonic flowmeter and ultrasonic generator/detector - Google Patents

Ultrasonic flowmeter and ultrasonic generator/detector Download PDF

Info

Publication number
HK1017067A1
HK1017067A1 HK99102266A HK99102266A HK1017067A1 HK 1017067 A1 HK1017067 A1 HK 1017067A1 HK 99102266 A HK99102266 A HK 99102266A HK 99102266 A HK99102266 A HK 99102266A HK 1017067 A1 HK1017067 A1 HK 1017067A1
Authority
HK
Hong Kong
Prior art keywords
ultrasonic
thickness
piezoelectric
piezoelectric body
transceiver
Prior art date
Application number
HK99102266A
Other languages
English (en)
Chinese (zh)
Other versions
HK1017067B (en
Inventor
足立明久
渡边淳志
佐藤利春
东奈绪子
桥本雅彦
Original Assignee
松下电器产业株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 松下电器产业株式会社 filed Critical 松下电器产业株式会社
Publication of HK1017067A1 publication Critical patent/HK1017067A1/xx
Publication of HK1017067B publication Critical patent/HK1017067B/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Transducers For Ultrasonic Waves (AREA)
HK99102266.5A 1995-12-13 1996-12-12 Ultrasonic flowmeter and ultrasonic generator/detector HK1017067B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP32422395 1995-12-13
JP324223/95 1995-12-13
PCT/JP1996/003629 WO1997021985A1 (en) 1995-12-13 1996-12-12 Ultrasonic flowmeter and ultrasonic generator/detector

Publications (2)

Publication Number Publication Date
HK1017067A1 true HK1017067A1 (en) 1999-11-12
HK1017067B HK1017067B (en) 2003-12-12

Family

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Also Published As

Publication number Publication date
WO1997021985A1 (en) 1997-06-19
CN1204398A (zh) 1999-01-06
EP1754958A1 (en) 2007-02-21
JP3554336B2 (ja) 2004-08-18
KR100852555B1 (ko) 2009-02-06
EP0869337B1 (en) 2015-03-04
EP0869337A4 (en) 1999-06-09
EP0869337A1 (en) 1998-10-07
KR19990072143A (ko) 1999-09-27
US6508133B1 (en) 2003-01-21
CN1104629C (zh) 2003-04-02

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20141212