JPH0157300B2 - - Google Patents

Info

Publication number
JPH0157300B2
JPH0157300B2 JP5623183A JP5623183A JPH0157300B2 JP H0157300 B2 JPH0157300 B2 JP H0157300B2 JP 5623183 A JP5623183 A JP 5623183A JP 5623183 A JP5623183 A JP 5623183A JP H0157300 B2 JPH0157300 B2 JP H0157300B2
Authority
JP
Japan
Prior art keywords
optical fiber
fluid
signal
optical
core
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.)
Expired
Application number
JP5623183A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59180444A (ja
Inventor
Kazuyasu Kawamura
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.)
Niigata Engineering Co Ltd
Original Assignee
Niigata Engineering 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 Niigata Engineering Co Ltd filed Critical Niigata Engineering Co Ltd
Priority to JP5623183A priority Critical patent/JPS59180444A/ja
Publication of JPS59180444A publication Critical patent/JPS59180444A/ja
Publication of JPH0157300B2 publication Critical patent/JPH0157300B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
JP5623183A 1983-03-31 1983-03-31 流体検知装置 Granted JPS59180444A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5623183A JPS59180444A (ja) 1983-03-31 1983-03-31 流体検知装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5623183A JPS59180444A (ja) 1983-03-31 1983-03-31 流体検知装置

Publications (2)

Publication Number Publication Date
JPS59180444A JPS59180444A (ja) 1984-10-13
JPH0157300B2 true JPH0157300B2 (enrdf_load_stackoverflow) 1989-12-05

Family

ID=13021325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5623183A Granted JPS59180444A (ja) 1983-03-31 1983-03-31 流体検知装置

Country Status (1)

Country Link
JP (1) JPS59180444A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0228425Y2 (enrdf_load_stackoverflow) * 1984-12-29 1990-07-31

Also Published As

Publication number Publication date
JPS59180444A (ja) 1984-10-13

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