JPS57197420A - Converter - Google Patents

Converter

Info

Publication number
JPS57197420A
JPS57197420A JP56081862A JP8186281A JPS57197420A JP S57197420 A JPS57197420 A JP S57197420A JP 56081862 A JP56081862 A JP 56081862A JP 8186281 A JP8186281 A JP 8186281A JP S57197420 A JPS57197420 A JP S57197420A
Authority
JP
Japan
Prior art keywords
fiber
light
mode
amount
mode fiber
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.)
Pending
Application number
JP56081862A
Other languages
Japanese (ja)
Inventor
Tadanori Yuhara
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co Ltd
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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP56081862A priority Critical patent/JPS57197420A/en
Publication of JPS57197420A publication Critical patent/JPS57197420A/en
Pending legal-status Critical Current

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)
  • Optical Transform (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To increase the accuracy of detection, by providing a higher-mode fiber for a detection section converting variable due to mechanical bending force or vibration into an amount of light and cutting off the light of higher mode produced through the mechanical vibration by means of a lower mode fiber. CONSTITUTION:A higher-mode fiber 24 functioning as a detecting section is fixed to a pipe line 31 with a packing 32 and a fixture 33. A vortex BU is alternately generated at the left and right sides at the downstream of a device toward the flow FL and the fiber 24 is oscillated with a force FO orthogonal to the flow FL. The light in a light emitting element 21 is propagated in the fiber 24 through a lower-mode fiber, the fiber 24 is bent with the external force FO, and the propagated light is converted from the lower to higher mode. The light of the higher mode to be converted is cut off at the lower-mode fiber 22 at the feedback side and the amount of beam propagating the fiber 22 is changed. The flow rate can be obtained with high accuracy by detecting the change in the amount of beam at a photodetector 25.
JP56081862A 1981-05-30 1981-05-30 Converter Pending JPS57197420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081862A JPS57197420A (en) 1981-05-30 1981-05-30 Converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081862A JPS57197420A (en) 1981-05-30 1981-05-30 Converter

Publications (1)

Publication Number Publication Date
JPS57197420A true JPS57197420A (en) 1982-12-03

Family

ID=13758283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081862A Pending JPS57197420A (en) 1981-05-30 1981-05-30 Converter

Country Status (1)

Country Link
JP (1) JPS57197420A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592154A1 (en) * 1985-12-24 1987-06-26 Flonic Sa Optical sensor of physical magnitudes
JPS62274206A (en) * 1986-05-09 1987-11-28 ト−マス　アンド　ベツツ　コ−ポレ−シヨン Optical-fiber detection method and device
FR2602865A1 (en) * 1986-08-14 1988-02-19 Flonic Sa Optical sensor for physical magnitudes
EP0319424A2 (en) * 1987-12-04 1989-06-07 SCHLUMBERGER INDUSTRIES, INC. (a Delaware corporation) Vortex flowmeter transducer
JPH0237329U (en) * 1988-09-02 1990-03-12
JP2020106305A (en) * 2018-12-26 2020-07-09 マツダ株式会社 Temperature measuring device and measurement method therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592154A1 (en) * 1985-12-24 1987-06-26 Flonic Sa Optical sensor of physical magnitudes
JPS62274206A (en) * 1986-05-09 1987-11-28 ト−マス　アンド　ベツツ　コ−ポレ−シヨン Optical-fiber detection method and device
FR2602865A1 (en) * 1986-08-14 1988-02-19 Flonic Sa Optical sensor for physical magnitudes
EP0319424A2 (en) * 1987-12-04 1989-06-07 SCHLUMBERGER INDUSTRIES, INC. (a Delaware corporation) Vortex flowmeter transducer
JPH0237329U (en) * 1988-09-02 1990-03-12
JP2020106305A (en) * 2018-12-26 2020-07-09 マツダ株式会社 Temperature measuring device and measurement method therefor

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