GB2276242B - Measurement system - Google Patents

Measurement system

Info

Publication number
GB2276242B
GB2276242B GB9411314A GB9411314A GB2276242B GB 2276242 B GB2276242 B GB 2276242B GB 9411314 A GB9411314 A GB 9411314A GB 9411314 A GB9411314 A GB 9411314A GB 2276242 B GB2276242 B GB 2276242B
Authority
GB
United Kingdom
Prior art keywords
measurement system
measurement
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.)
Expired - Fee Related
Application number
GB9411314A
Other versions
GB9411314D0 (en
GB2276242A (en
Inventor
Michael John Gill
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.)
British Gas PLC
Original Assignee
British Gas 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
Priority claimed from GB909021441A external-priority patent/GB9021441D0/en
Application filed by British Gas PLC filed Critical British Gas PLC
Priority to GB9411314A priority Critical patent/GB2276242B/en
Publication of GB9411314D0 publication Critical patent/GB9411314D0/en
Publication of GB2276242A publication Critical patent/GB2276242A/en
Application granted granted Critical
Publication of GB2276242B publication Critical patent/GB2276242B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • 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
    • 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
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/245—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves
GB9411314A 1990-10-02 1991-09-11 Measurement system Expired - Fee Related GB2276242B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9411314A GB2276242B (en) 1990-10-02 1991-09-11 Measurement system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909021441A GB9021441D0 (en) 1990-10-02 1990-10-02 Measurement system
GB9411314A GB2276242B (en) 1990-10-02 1991-09-11 Measurement system
GB9119414A GB2248502B (en) 1990-10-02 1991-09-11 Measurement system

Publications (3)

Publication Number Publication Date
GB9411314D0 GB9411314D0 (en) 1994-07-27
GB2276242A GB2276242A (en) 1994-09-21
GB2276242B true GB2276242B (en) 1995-06-14

Family

ID=26297749

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9411314A Expired - Fee Related GB2276242B (en) 1990-10-02 1991-09-11 Measurement system
GB9119414A Expired - Lifetime GB2248502B (en) 1990-10-02 1991-09-11 Measurement system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9119414A Expired - Lifetime GB2248502B (en) 1990-10-02 1991-09-11 Measurement system

Country Status (1)

Country Link
GB (2) GB2276242B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9608265D0 (en) * 1996-04-22 1996-06-26 British Gas Plc Apparatus for measuring a gas value
GB2313910A (en) * 1996-06-07 1997-12-10 Kromschroeder Ag G Acoustic fluid flowmeter
FR2755233B1 (en) * 1996-10-28 1999-02-19 Schlumberger Ind Sa FLUID METER WITH IMPROVED RESISTANCE TO INTERESTED ULTRASONIC WAVES
FR2755231B1 (en) * 1996-10-28 1998-12-04 Schlumberger Ind Sa ULTRASONIC FLUID METER WITH IMPROVED RESISTANCE TO INTERESTED ULTRASONIC WAVES
GB2429061B (en) * 2005-08-13 2009-04-22 Flownetix Ltd A method of construction for a low cost plastic ultrasonic water meter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052741A (en) * 1979-06-08 1981-01-28 Landis & Gyr Ag Measurement value generators for determining the through-flow rate of a flowing fluid
US4480486A (en) * 1982-03-01 1984-11-06 Lgz Landis & Gyr Zug Ag Apparatus for measuring liquid flow
WO1986002723A1 (en) * 1984-10-23 1986-05-09 N.V. Nederlandsche Apparatenfabriek Nedap Transducer with reduced acoustic reflection
EP0249689A1 (en) * 1986-06-17 1987-12-23 Landis & Gyr Betriebs AG Sensor for the determination of the flow of a flowing fluid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8813640D0 (en) * 1988-06-09 1988-07-13 Gill M J Speed measurement device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052741A (en) * 1979-06-08 1981-01-28 Landis & Gyr Ag Measurement value generators for determining the through-flow rate of a flowing fluid
US4480486A (en) * 1982-03-01 1984-11-06 Lgz Landis & Gyr Zug Ag Apparatus for measuring liquid flow
WO1986002723A1 (en) * 1984-10-23 1986-05-09 N.V. Nederlandsche Apparatenfabriek Nedap Transducer with reduced acoustic reflection
EP0249689A1 (en) * 1986-06-17 1987-12-23 Landis & Gyr Betriebs AG Sensor for the determination of the flow of a flowing fluid

Also Published As

Publication number Publication date
GB9119414D0 (en) 1991-10-23
GB2248502A (en) 1992-04-08
GB2248502B (en) 1995-06-14
GB9411314D0 (en) 1994-07-27
GB2276242A (en) 1994-09-21

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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)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090911