HK77697A - Water penetration detecting apparatus - Google Patents
Water penetration detecting apparatusInfo
- Publication number
- HK77697A HK77697A HK77697A HK77697A HK77697A HK 77697 A HK77697 A HK 77697A HK 77697 A HK77697 A HK 77697A HK 77697 A HK77697 A HK 77697A HK 77697 A HK77697 A HK 77697A
- Authority
- HK
- Hong Kong
- Prior art keywords
- detecting apparatus
- water penetration
- penetration detecting
- water
- penetration
- Prior art date
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920022627A KR960001445B1 (en) | 1992-11-27 | 1992-11-27 | Apparatus for sensing submersion using a optical fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
HK77697A true HK77697A (en) | 1997-06-20 |
Family
ID=19344144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK77697A HK77697A (en) | 1992-11-27 | 1997-06-12 | Water penetration detecting apparatus |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR960001445B1 (en) |
GB (1) | GB2273352B (en) |
HK (1) | HK77697A (en) |
SG (1) | SG67346A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100524676B1 (en) * | 1998-10-13 | 2006-01-12 | 주식회사 하이닉스반도체 | Trench type isolation film formation method of semiconductor device |
WO2003060454A1 (en) * | 2002-01-15 | 2003-07-24 | Fibre Optics Ct Gmbh | Measuring device |
EP1491873A1 (en) * | 2003-06-25 | 2004-12-29 | Alcatel | Optical fiber sensor cable |
US11982582B2 (en) * | 2019-10-18 | 2024-05-14 | Nec Corporation | Optical fiber cable and water pressure sensing system, and sensitivity correction method |
CN111830346B (en) * | 2020-07-13 | 2021-07-16 | 华南理工大学 | Power cable water inflow evaluation test method based on pressure detection |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2062877B (en) * | 1979-11-15 | 1984-03-07 | Avon Rubber Co Ltd | Method and device for detecting leaks from pipelines |
GB2100420A (en) * | 1981-06-10 | 1982-12-22 | Fibun Bv | Detecting fluid leakages from conduit |
DK359081A (en) * | 1981-08-13 | 1983-02-14 | F Bergquist | CHAIR CHAIRS FOR FITTING ON CYCLES |
WO1983000744A1 (en) * | 1981-08-27 | 1983-03-03 | Trw Inc | Microbending of optical fibers for remote force measurement |
EP0245753A3 (en) * | 1986-05-09 | 1990-04-25 | Fujikura Ltd. | Water penetration-detecting apparatus and optical fiber cable using same |
-
1992
- 1992-11-27 KR KR1019920022627A patent/KR960001445B1/en not_active IP Right Cessation
- 1992-12-31 GB GB9227171A patent/GB2273352B/en not_active Expired - Fee Related
- 1992-12-31 SG SG1996008461A patent/SG67346A1/en unknown
-
1997
- 1997-06-12 HK HK77697A patent/HK77697A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB9227171D0 (en) | 1993-02-24 |
KR940011962A (en) | 1994-06-22 |
SG67346A1 (en) | 1999-09-21 |
GB2273352B (en) | 1996-07-31 |
GB2273352A (en) | 1994-06-15 |
KR960001445B1 (en) | 1996-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20071231 |