JPH0285329U - - Google Patents

Info

Publication number
JPH0285329U
JPH0285329U JP16523088U JP16523088U JPH0285329U JP H0285329 U JPH0285329 U JP H0285329U JP 16523088 U JP16523088 U JP 16523088U JP 16523088 U JP16523088 U JP 16523088U JP H0285329 U JPH0285329 U JP H0285329U
Authority
JP
Japan
Prior art keywords
light
prism
receiving element
liquid level
critical surface
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
JP16523088U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP16523088U priority Critical patent/JPH0285329U/ja
Publication of JPH0285329U publication Critical patent/JPH0285329U/ja
Pending legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図はこの考案に係る液位検出セ
ンサの断面図、第３図は液位検出センサの斜視図
、第４図は小型ボイラーの給油装置の構成を示し
た概略断面図、第５図はポンプの駆動回路図であ
る。 １……液位検出装置、１７……プリズム、１８
……発光素子、１９……受光素子、２０，２１…
…臨界面。 1 and 2 are cross-sectional views of the liquid level detection sensor according to this invention, FIG. 3 is a perspective view of the liquid level detection sensor, and FIG. 4 is a schematic cross-sectional view showing the configuration of the oil supply system for a small boiler. FIG. 5 is a pump drive circuit diagram. 1... Liquid level detection device, 17... Prism, 18
...Light emitting element, 19... Light receiving element, 20, 21...
...Critical surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 並列に配置された発光素子と受光素子と、これ
らの素子の前方に設けられ、発光素子からの光を
透過するとともに臨界面において順次全反射して
受光素子に向けて入射させるプリズムと一体のレ
ベルセンサを基板上に備え、液位がプリズムに至
るとプリズムの相対的な屈折率の変化により臨界
面における全反射が妨げられて光の経路が変化し
、受光素子がこれを検知することを特徴とする液
位検出装置。 A level integrated with a light-emitting element and a light-receiving element arranged in parallel, and a prism installed in front of these elements that transmits the light from the light-emitting element and sequentially totally reflects it at a critical surface so that it enters the light-receiving element. A sensor is provided on the substrate, and when the liquid level reaches the prism, the change in the relative refractive index of the prism prevents total reflection at the critical surface and changes the path of light, which is detected by the light receiving element. Liquid level detection device.
JP16523088U 1988-12-21 1988-12-21 Pending JPH0285329U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16523088U JPH0285329U (en) 1988-12-21 1988-12-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16523088U JPH0285329U (en) 1988-12-21 1988-12-21

Publications (1)

Publication Number Publication Date
JPH0285329U true JPH0285329U (en) 1990-07-04

Family

ID=31451526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16523088U Pending JPH0285329U (en) 1988-12-21 1988-12-21

Country Status (1)

Country Link
JP (1) JPH0285329U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004361404A (en) * 2003-06-06 2004-12-24 Fuji Xerox Co Ltd Method of deciding liquid level of liquid container, sensor target, the liquid container, sensor, and liquid ejector head
JP2014010055A (en) * 2012-06-29 2014-01-20 Espec Corp Liquid level sensor and environment testing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5252664A (en) * 1975-10-25 1977-04-27 Toshiba Corp Detector for liquid level

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5252664A (en) * 1975-10-25 1977-04-27 Toshiba Corp Detector for liquid level

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004361404A (en) * 2003-06-06 2004-12-24 Fuji Xerox Co Ltd Method of deciding liquid level of liquid container, sensor target, the liquid container, sensor, and liquid ejector head
JP2014010055A (en) * 2012-06-29 2014-01-20 Espec Corp Liquid level sensor and environment testing device

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