JPS6011033U - level sensor - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図及び第２図はそれぞれ従来使用されているレベル
センサの例を示す要部構成図、第３図はこの考案のレベ
ルセンサの実施例の構成を示す要部構成図、第４図は第
３図の光ファイバの先端部分の構成を示す部分構成図で
ある。 １１、　２２．　２３・・・・・・光導体、１２・・・
・・・接触部、１３・・・・・・光源、１４・・・・・
・受光器、１５・・・・・・放射光、１６．１８・・・
・・・被測定液面、１７・・・・・・検出光、２１・・
・・・・プリズム、２５・・・・・・光ファイバ、２６
・・・・・・円錐体、３０・・・・・・方向性結合器、
１．、１２．１３・・・　゛・・・結合端。1 and 2 are main part configuration diagrams showing an example of a conventionally used level sensor, respectively. FIG. 3 is a main part configuration diagram showing the configuration of an embodiment of the level sensor of this invention. FIG. 4 is a partial configuration diagram showing the configuration of the tip portion of the optical fiber in FIG. 3; 11, 22. 23... Light guide, 12...
...Contact part, 13...Light source, 14...
・Photoreceiver, 15... Synchrotron radiation, 16.18...
...Measurement liquid level, 17...Detection light, 21...
... Prism, 25 ... Optical fiber, 26
... Cone, 30 ... Directional coupler,
1. , 12.13... ゛...bonding end.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 光ファイバの先端に被測定液面との接触部となるほぼ９
０°の頂角を有する円錐体が形成され、この円錐体と反
対側の前記光ファイバの端部には方向性結合器の一結合
端が接続され、前記方向性結合器の他の７結合端はそれ
ぞれ光源及び受光器に接続されてなることを特徴とする
レベルセンサ。Approximately 9 points at the tip of the optical fiber, which is the contact part with the liquid surface to be measured.
A cone having an apex angle of 0° is formed, and one coupling end of a directional coupler is connected to the end of the optical fiber opposite to this cone, and the other seven couplings of the directional coupler are connected to the end of the optical fiber opposite to the cone. A level sensor characterized in that its ends are connected to a light source and a light receiver, respectively.