GB8802251D0 - Acoustic devices - Google Patents

Acoustic devices

Info

Publication number
GB8802251D0
GB8802251D0 GB888802251A GB8802251A GB8802251D0 GB 8802251 D0 GB8802251 D0 GB 8802251D0 GB 888802251 A GB888802251 A GB 888802251A GB 8802251 A GB8802251 A GB 8802251A GB 8802251 D0 GB8802251 D0 GB 8802251D0
Authority
GB
United Kingdom
Prior art keywords
acoustic devices
acoustic
devices
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB888802251A
Other versions
GB2215049B (en
GB2215049A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
STC PLC
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 STC PLC filed Critical STC PLC
Priority to GB8802251A priority Critical patent/GB2215049B/en
Publication of GB8802251D0 publication Critical patent/GB8802251D0/en
Publication of GB2215049A publication Critical patent/GB2215049A/en
Application granted granted Critical
Publication of GB2215049B publication Critical patent/GB2215049B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
GB8802251A 1988-02-02 1988-02-02 Acoustic devices Expired - Lifetime GB2215049B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8802251A GB2215049B (en) 1988-02-02 1988-02-02 Acoustic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8802251A GB2215049B (en) 1988-02-02 1988-02-02 Acoustic devices

Publications (3)

Publication Number Publication Date
GB8802251D0 true GB8802251D0 (en) 1988-03-02
GB2215049A GB2215049A (en) 1989-09-13
GB2215049B GB2215049B (en) 1991-08-21

Family

ID=10630898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8802251A Expired - Lifetime GB2215049B (en) 1988-02-02 1988-02-02 Acoustic devices

Country Status (1)

Country Link
GB (1) GB2215049B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013665A1 (en) * 1990-04-27 1991-10-31 Fraunhofer Ges Forschung SENSOR FOR DETECTING A SUBSTANCE IN A LIQUID
US5392635A (en) * 1993-12-30 1995-02-28 At&T Corp. Acoustic analysis of gas mixtures
US5625140A (en) 1995-12-12 1997-04-29 Lucent Technologies Inc. Acoustic analysis of gas mixtures
US5900552A (en) * 1997-03-28 1999-05-04 Ohmeda Inc. Inwardly directed wave mode ultrasonic transducer, gas analyzer, and method of use and manufacture
US6116080A (en) 1998-04-17 2000-09-12 Lorex Industries, Inc. Apparatus and methods for performing acoustical measurements
GB2397887A (en) * 2003-01-30 2004-08-04 Flotec Uk Ltd Ultrasonic gas composition analysis device
EP1624300A1 (en) * 2004-08-04 2006-02-08 Flotec UK Limited Ultrasonic fluid analysis cell with travel time measurement
EP1860433A1 (en) * 2006-05-24 2007-11-28 TF Instruments, Inc. Ultrasonic resonator cell with uniform pressure on the ultrasonic transducers
WO2022133610A1 (en) * 2020-12-23 2022-06-30 Romet Limited Measuring concentrations of mixed gases at an endpoint

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557605A (en) * 1967-03-31 1971-01-26 Tracor Ultrasonic acoustical analysis
CH644722A5 (en) * 1980-07-21 1984-08-15 Balzers Hochvakuum SWINGING QUARTZ MEASURING HEAD.
JPS6025956B2 (en) * 1980-12-10 1985-06-21 松下電器産業株式会社 Ultrasonic transducer
GB2096860B (en) * 1981-03-30 1984-09-19 Philips Electronic Associated Piezoelectric sound transducer
GB2188148A (en) * 1986-03-19 1987-09-23 Subspek Limited Structural inspection device

Also Published As

Publication number Publication date
GB2215049B (en) 1991-08-21
GB2215049A (en) 1989-09-13

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20080201