JPS567021A - Liquid-level detector - Google Patents

Liquid-level detector

Info

Publication number
JPS567021A
JPS567021A JP8149579A JP8149579A JPS567021A JP S567021 A JPS567021 A JP S567021A JP 8149579 A JP8149579 A JP 8149579A JP 8149579 A JP8149579 A JP 8149579A JP S567021 A JPS567021 A JP S567021A
Authority
JP
Japan
Prior art keywords
light
emitting element
liquid
conductors
detector
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
JP8149579A
Other languages
Japanese (ja)
Inventor
Hiroaki Maruyama
Keiichi Ohashi
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.)
SUKAIRAITO KOGYO KK
Toshiba Corp
Skylite Industry Co Ltd
Original Assignee
SUKAIRAITO KOGYO KK
Toshiba Corp
Skylite Industry Co Ltd
Tokyo Shibaura Electric 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 SUKAIRAITO KOGYO KK, Toshiba Corp, Skylite Industry Co Ltd, Tokyo Shibaura Electric Co Ltd filed Critical SUKAIRAITO KOGYO KK
Priority to JP8149579A priority Critical patent/JPS567021A/en
Publication of JPS567021A publication Critical patent/JPS567021A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE:To obtain a liquid-level detector being compact and having improved accuracy and reliability by optically connecting a light-emitting element and a photoactive element which are connected together through conductors on a wiring board, with a pair of optical fibers having one end formed into a total reflection face, and installing this in a given container together with conductors to the elements. CONSTITUTION:Lead wires 29-32 of a light-emitting element 21 and a photoactive element 22 are connected to conductors 33-35 through a wiring board 24. A pair of optical fibers 27a and 27b having a junction portion 28a whose one end 28 is a total reflection face are contacted with the light-emitting element 21 and the photoactive element 22 through a holding member 25 and a supporting member 26, and optically connected. The detector is inserted into, e.g., a container 42 monolithicly provided to a discharge port 41a of a discharge portion 41 of an electrically-operated pump, and fixed. When the level of the liquid flowing in from a lower part 43 reaches the total reflection face 28b, light from the light-emitting element 21 is no longer applied to the photoactive element 22, so that the liquid level can be sensed. Thus, the detector being compact and having improved accuracy and reliability can be obtained.
JP8149579A 1979-06-29 1979-06-29 Liquid-level detector Pending JPS567021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8149579A JPS567021A (en) 1979-06-29 1979-06-29 Liquid-level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8149579A JPS567021A (en) 1979-06-29 1979-06-29 Liquid-level detector

Publications (1)

Publication Number Publication Date
JPS567021A true JPS567021A (en) 1981-01-24

Family

ID=13747960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8149579A Pending JPS567021A (en) 1979-06-29 1979-06-29 Liquid-level detector

Country Status (1)

Country Link
JP (1) JPS567021A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819392U (en) * 1981-07-30 1983-02-05 オムロン株式会社 Fiber optic photoelectric switch
FR2512551A1 (en) * 1981-09-09 1983-03-11 Cortaillod Cables Sa OPTICAL DEVICE FOR DETECTING A CHANGE OF OPTICAL MEDIUM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819392U (en) * 1981-07-30 1983-02-05 オムロン株式会社 Fiber optic photoelectric switch
FR2512551A1 (en) * 1981-09-09 1983-03-11 Cortaillod Cables Sa OPTICAL DEVICE FOR DETECTING A CHANGE OF OPTICAL MEDIUM

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