JPS6341993U - - Google Patents

Info

Publication number
JPS6341993U
JPS6341993U JP10984087U JP10984087U JPS6341993U JP S6341993 U JPS6341993 U JP S6341993U JP 10984087 U JP10984087 U JP 10984087U JP 10984087 U JP10984087 U JP 10984087U JP S6341993 U JPS6341993 U JP S6341993U
Authority
JP
Japan
Prior art keywords
vibrators
transducer
coaxial cable
series
frequency
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
JP10984087U
Other languages
English (en)
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 JP10984087U priority Critical patent/JPS6341993U/ja
Publication of JPS6341993U publication Critical patent/JPS6341993U/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02836—Flow rate, liquid level

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Description

【図面の簡単な説明】
第１図は音響振動子の簡易等価回路図、第２図
は単巻トランスを利用した従来の整合結合の説明
図、第３図はπ形回路を利用した従来の整合結合
の説明図、第４図は本考案になる送・受信用超音
波プローブのそれぞれの周波数特性の説明図、第
５図は本考案になる整合結合による本質安全型油
水界面検出装置の１実施例の回路図である。 Ｅ……高周波電源、Ｌ０……インダクタンス、
Ｃ０……静電容量、Ｒ０……抵抗、Ｃ……同軸ケ
ーブル、Ｋ……音響振動子、Ｌ１，Ｌ２ないしＬ
３……コイル、Ｓ．Ｇ．……スイープジエネレー
タ、Ｓ……送信器、Ｒ……受信器、Ｗ……水槽、
Ｐ１……送信用超音波プローブ、Ｐ２……受信用
超音波プローブ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 高周波の１波長以上に長い同軸ケーブルと振動
    子を内装する超音波プローブとを結合して油水界
    面を検出するものにおいて、上記振動子駆動用電
    源の周波数を該振動子の反共振周波数と等しくし
    、複数の上記振動子を直並列に接続して上記反共
    振周波数における上記振動子の直並列合成インピ
    ーダンスが上記同軸ケーブルの特性インピーダン
    スに等しくなるようにして上記同軸ケーブルに直
    接結合したことを特徴とする本質安全型油水界面
    検出装置。
JP10984087U 1987-07-17 1987-07-17 Pending JPS6341993U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10984087U JPS6341993U (ja) 1987-07-17 1987-07-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10984087U JPS6341993U (ja) 1987-07-17 1987-07-17

Publications (1)

Publication Number Publication Date
JPS6341993U true JPS6341993U (ja) 1988-03-19

Family

ID=30988311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10984087U Pending JPS6341993U (ja) 1987-07-17 1987-07-17

Country Status (1)

Country Link
JP (1) JPS6341993U (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4879590A (ja) * 1972-01-24 1973-10-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4879590A (ja) * 1972-01-24 1973-10-25

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