JPS57194313A - Ultrasonic flow meter for gas - Google Patents
Ultrasonic flow meter for gasInfo
- Publication number
- JPS57194313A JPS57194313A JP56079698A JP7969881A JPS57194313A JP S57194313 A JPS57194313 A JP S57194313A JP 56079698 A JP56079698 A JP 56079698A JP 7969881 A JP7969881 A JP 7969881A JP S57194313 A JPS57194313 A JP S57194313A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- ultrasonic
- measured
- flow
- wave
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
PURPOSE:To precisely measure the flow rate of a fluid through ultrasonic wave transmission and reception, by completely straightening a turbulent flow, specially a rotary flow of a fluid to be measured by the successive constitution of a large-diameter opening part, a straightening device, and an arc-shaped throttle part. CONSTITUTION:A fluid to be measured flows into the opening part 1 of a flow meter body (a) and is supplied to a straightening device 6 to straighten a turbulent and a rotary flow; and a trailing practicable throttle part 5 reduces the sectional area of the fluid to accelerate the straighening, and the fluid is transported to a fluid measurement part 2. Continuous ultrasonic waves driven by oscillators are transmitted slantingly from the up side and down side of the fluid to be measured, so ultrasonic-wave receivers 4 provided at opposite positions receive the ultrasonic wave signals. According to the velocity of the fluid to be measured, the ultrasonic waves received by the ultrasonic-wave receivers 4 provided at the up side and down side differ in phase difference and measurement results of two couples of ultrasonic-wave transmitting and receiving mechanisms (b) are operated to measure a desired flow rate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56079698A JPS57194313A (en) | 1981-05-26 | 1981-05-26 | Ultrasonic flow meter for gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56079698A JPS57194313A (en) | 1981-05-26 | 1981-05-26 | Ultrasonic flow meter for gas |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57194313A true JPS57194313A (en) | 1982-11-29 |
JPH0221528B2 JPH0221528B2 (en) | 1990-05-15 |
Family
ID=13697421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56079698A Granted JPS57194313A (en) | 1981-05-26 | 1981-05-26 | Ultrasonic flow meter for gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57194313A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523478A (en) * | 1983-08-18 | 1985-06-18 | Nusonics, Inc. | Sonic flow meter having improved flow straighteners |
JPH109916A (en) * | 1996-06-26 | 1998-01-16 | Matsushita Electric Ind Co Ltd | Ultrasonic flowmeter |
WO2000055581A1 (en) * | 1999-03-17 | 2000-09-21 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic flowmeter |
JP2001133307A (en) * | 1999-11-05 | 2001-05-18 | Matsushita Electric Ind Co Ltd | Inflow and outflow symmetric flowmeter |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0926342A (en) * | 1995-07-13 | 1997-01-28 | Matsushita Electric Ind Co Ltd | Ultrasonic oscillator and ultrasonic flowmeter using it |
JP3907613B2 (en) * | 1997-04-18 | 2007-04-18 | 松下電器産業株式会社 | Ultrasonic flow meter |
-
1981
- 1981-05-26 JP JP56079698A patent/JPS57194313A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523478A (en) * | 1983-08-18 | 1985-06-18 | Nusonics, Inc. | Sonic flow meter having improved flow straighteners |
JPH109916A (en) * | 1996-06-26 | 1998-01-16 | Matsushita Electric Ind Co Ltd | Ultrasonic flowmeter |
WO2000055581A1 (en) * | 1999-03-17 | 2000-09-21 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic flowmeter |
US6748811B1 (en) | 1999-03-17 | 2004-06-15 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic flowmeter |
KR100488272B1 (en) * | 1999-03-17 | 2005-05-11 | 마쯔시다덴기산교 가부시키가이샤 | Ultrasonic flowmeter |
CN100453980C (en) * | 1999-03-17 | 2009-01-21 | 松下电器产业株式会社 | Ultrasonic flowmeter |
JP2001133307A (en) * | 1999-11-05 | 2001-05-18 | Matsushita Electric Ind Co Ltd | Inflow and outflow symmetric flowmeter |
Also Published As
Publication number | Publication date |
---|---|
JPH0221528B2 (en) | 1990-05-15 |
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