JPS571913A - Vortex flow meter - Google Patents
Vortex flow meterInfo
- Publication number
- JPS571913A JPS571913A JP7596280A JP7596280A JPS571913A JP S571913 A JPS571913 A JP S571913A JP 7596280 A JP7596280 A JP 7596280A JP 7596280 A JP7596280 A JP 7596280A JP S571913 A JPS571913 A JP S571913A
- Authority
- JP
- Japan
- Prior art keywords
- light
- flow meter
- generating body
- recess
- signals
- 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
- G01F1/05—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 using mechanical effects
- G01F1/20—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 using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—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 using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/325—Means for detecting quantities used as proxy variables for swirl
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
Abstract
PURPOSE:To obtain a vortex flow meter of high detecting sensitivity, having a simple structure, by employing such constitution that a light source and a light-receiving part are disposed in the recess provided at one end of a vortex generating body, and the change in the quantity of light reflected from the bottom surface of the recess is detected. CONSTITUTION:When a fluid flows through a duct 1, Karman vortexes are alternately and regularly generated from both sides of a vortex generating body 2, so that the bottom surface 51 of a recess 5 in the vortex generating body receives a lifting power alternately changing in direction. As a result, there are changes in the quantity of light which goes out from a light-feeding fiber 60 and is incident on light-receiving fibers 61 and 62 after being reflected from the bottom surface 51. Said optical signals are inputted through light-receiving elements 91 and 92 and amplifiers A1 and A2 to an amplifier A3, from which the differential output between both signals is obtained. In addition, both signals are added to each other in an amplifier A4, and the light output of a light source 8 is controlled so that said added signal becomes a constant value with respect to a reference setting signal ES. Thereby, a vortex flow meter having both a simple structure and a high detecting sensitivity can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55075962A JPS605884B2 (en) | 1980-06-05 | 1980-06-05 | vortex flow meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55075962A JPS605884B2 (en) | 1980-06-05 | 1980-06-05 | vortex flow meter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS571913A true JPS571913A (en) | 1982-01-07 |
JPS605884B2 JPS605884B2 (en) | 1985-02-14 |
Family
ID=13591347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55075962A Expired JPS605884B2 (en) | 1980-06-05 | 1980-06-05 | vortex flow meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS605884B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5923257A (en) * | 1982-07-28 | 1984-02-06 | Hokuyo Automatic Co | Optical fiber type sensor |
JPS5954919A (en) * | 1982-09-21 | 1984-03-29 | Ohkura Electric Co Ltd | Mechanical light modulating device |
JPS60236073A (en) * | 1984-05-09 | 1985-11-22 | Sumitomo Electric Ind Ltd | Fault locator for transmission line |
JPS6126122U (en) * | 1984-07-24 | 1986-02-17 | 科学技術庁航空宇宙技術研究所長 | Flowmeter |
EP0319424A2 (en) * | 1987-12-04 | 1989-06-07 | SCHLUMBERGER INDUSTRIES, INC. (a Delaware corporation) | Vortex flowmeter transducer |
EP2075607A1 (en) * | 2007-12-28 | 2009-07-01 | British Telecmmunications public limited campany | Arrival detection of air flow and a fibre unit during fibre blowing installation using relfected light |
-
1980
- 1980-06-05 JP JP55075962A patent/JPS605884B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5923257A (en) * | 1982-07-28 | 1984-02-06 | Hokuyo Automatic Co | Optical fiber type sensor |
JPS5954919A (en) * | 1982-09-21 | 1984-03-29 | Ohkura Electric Co Ltd | Mechanical light modulating device |
JPS60236073A (en) * | 1984-05-09 | 1985-11-22 | Sumitomo Electric Ind Ltd | Fault locator for transmission line |
JPH0511269B2 (en) * | 1984-05-09 | 1993-02-15 | Sumitomo Electric Industries | |
JPS6126122U (en) * | 1984-07-24 | 1986-02-17 | 科学技術庁航空宇宙技術研究所長 | Flowmeter |
JPH0313688Y2 (en) * | 1984-07-24 | 1991-03-28 | ||
EP0319424A2 (en) * | 1987-12-04 | 1989-06-07 | SCHLUMBERGER INDUSTRIES, INC. (a Delaware corporation) | Vortex flowmeter transducer |
EP2075607A1 (en) * | 2007-12-28 | 2009-07-01 | British Telecmmunications public limited campany | Arrival detection of air flow and a fibre unit during fibre blowing installation using relfected light |
WO2009083715A1 (en) * | 2007-12-28 | 2009-07-09 | British Telecommunications Public Limited Company | Arrival detection of air flow and a fibre unit during fibre blowing installation using reflected light |
Also Published As
Publication number | Publication date |
---|---|
JPS605884B2 (en) | 1985-02-14 |
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