JPS57154052A - Method for detecting concentration of sf6 gas - Google Patents

Method for detecting concentration of sf6 gas

Info

Publication number
JPS57154052A
JPS57154052A JP56039378A JP3937881A JPS57154052A JP S57154052 A JPS57154052 A JP S57154052A JP 56039378 A JP56039378 A JP 56039378A JP 3937881 A JP3937881 A JP 3937881A JP S57154052 A JPS57154052 A JP S57154052A
Authority
JP
Japan
Prior art keywords
gas
concentration
detecting
rho
flange
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
JP56039378A
Other languages
English (en)
Inventor
Hiroyoshi Sadamura
Hiroshi Maeda
Koji Sasaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56039378A priority Critical patent/JPS57154052A/ja
Publication of JPS57154052A publication Critical patent/JPS57154052A/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
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • 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
    • G01N2291/02809—Concentration of a compound, e.g. measured by a surface mass change

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
JP56039378A 1981-03-20 1981-03-20 Method for detecting concentration of sf6 gas Pending JPS57154052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56039378A JPS57154052A (en) 1981-03-20 1981-03-20 Method for detecting concentration of sf6 gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56039378A JPS57154052A (en) 1981-03-20 1981-03-20 Method for detecting concentration of sf6 gas

Publications (1)

Publication Number Publication Date
JPS57154052A true JPS57154052A (en) 1982-09-22

Family

ID=12551356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56039378A Pending JPS57154052A (en) 1981-03-20 1981-03-20 Method for detecting concentration of sf6 gas

Country Status (1)

Country Link
JP (1) JPS57154052A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190854A (ja) * 1983-12-19 1985-09-28 ザ・バブコツク・アンド・ウイルコツクス・カンパニ− 密閉空間中のガスの存在を検出するための音響装置および方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190854A (ja) * 1983-12-19 1985-09-28 ザ・バブコツク・アンド・ウイルコツクス・カンパニ− 密閉空間中のガスの存在を検出するための音響装置および方法
JPH0431064B2 (ja) * 1983-12-19 1992-05-25

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