GB1370588A - Flowmeter computer - Google Patents
Flowmeter computerInfo
- Publication number
- GB1370588A GB1370588A GB805273A GB805273A GB1370588A GB 1370588 A GB1370588 A GB 1370588A GB 805273 A GB805273 A GB 805273A GB 805273 A GB805273 A GB 805273A GB 1370588 A GB1370588 A GB 1370588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- counter
- receipt
- flow velocity
- elapsed time
- 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
Links
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
1370588 Acoustic flow meter WESTING- HOUSE ELECTRIC CORP 19 Feb 1973 [1 March 1972] 8052/73 Heading H4D [Also in Division G4] The flow velocity of a liquid 20 relative to two transducers 11, 12 is measured by simultaneously transmitting an acoustic signal from each transducer, measuring the time delay before receipt of the signal at each transducer and calculating the flow velocity from the elapsed time by digital programmable means. The time measurement device 16 comprises two elapsed time counters and a source of clock pulses. Transmission of the acoustic signal from 13 initiates the feeding of clock pulses to a first counter. This count is stopped and a pulse feed to the second counter started on receipt of a signal from either receiver A or B. The count in the second counter is stopped on receipt of a signal from the other receiver. The counter readings then represent the elapsed times. The digital processor comprises a preprocessor, a programming unit and an arithmetic unit. Its caldilation and function can be altered by changing plug-in modules and it includes self checking apparatus and means for checking that the elapsed time signals fall within a predetermined time span. The apparatus may comprise several transducers which can be selectively grouped in pairs for measurement. The output display may indicate flow velocity, flow direction and mass flow rate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23087472A | 1972-03-01 | 1972-03-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1370588A true GB1370588A (en) | 1974-10-16 |
Family
ID=22866917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB805273A Expired GB1370588A (en) | 1972-03-01 | 1973-02-19 | Flowmeter computer |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS4896157A (en) |
CA (1) | CA1003945A (en) |
CH (1) | CH565370A5 (en) |
DE (1) | DE2309606A1 (en) |
GB (1) | GB1370588A (en) |
ZA (1) | ZA73612B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0407676B1 (en) * | 1989-07-14 | 1994-04-27 | Haiges Elektronik Gmbh | Method for measuring the time differences among the ultrasound signals belonging to a group, and apparatus for carrying out the method |
DE102015106897B4 (en) * | 2015-05-04 | 2021-12-02 | Endress+Hauser Flowtec Ag | Method and device for verifying the operation of an ultrasonic flow measuring device based on the transit time difference method |
-
1973
- 1973-01-29 ZA ZA730612A patent/ZA73612B/en unknown
- 1973-02-07 CA CA163,051A patent/CA1003945A/en not_active Expired
- 1973-02-19 GB GB805273A patent/GB1370588A/en not_active Expired
- 1973-02-27 DE DE19732309606 patent/DE2309606A1/en active Pending
- 1973-03-01 JP JP48023772A patent/JPS4896157A/ja active Pending
- 1973-03-01 CH CH301273A patent/CH565370A5/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH565370A5 (en) | 1975-08-15 |
JPS4896157A (en) | 1973-12-08 |
CA1003945A (en) | 1977-01-18 |
ZA73612B (en) | 1973-10-31 |
DE2309606A1 (en) | 1973-09-06 |
AU5165373A (en) | 1974-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930217 |