FI882907A - Lekadetektor och -lokalisator baserad pao tidreflektometri- och provtagningsteknik. - Google Patents
Lekadetektor och -lokalisator baserad pao tidreflektometri- och provtagningsteknik. Download PDFInfo
- Publication number
- FI882907A FI882907A FI882907A FI882907A FI882907A FI 882907 A FI882907 A FI 882907A FI 882907 A FI882907 A FI 882907A FI 882907 A FI882907 A FI 882907A FI 882907 A FI882907 A FI 882907A
- Authority
- FI
- Finland
- Prior art keywords
- waveform
- och
- cable
- stored
- sampled
- 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
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
-
- 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
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/165—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means by means of cables or similar elongated devices, e.g. tapes
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7102287 | 1987-07-08 | ||
US07/071,022 US4797621A (en) | 1987-07-08 | 1987-07-08 | Leak detector and locator utilizing time domain reflectometry and sampling techniques |
Publications (3)
Publication Number | Publication Date |
---|---|
FI882907A0 FI882907A0 (fi) | 1988-06-17 |
FI882907A true FI882907A (fi) | 1989-01-09 |
FI100616B FI100616B (fi) | 1998-01-15 |
Family
ID=22098797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI882907A FI100616B (fi) | 1987-07-08 | 1988-06-17 | Detektori väliaineen havaitsemiseksi ennalta määrätyllä alueella |
Country Status (7)
Country | Link |
---|---|
US (1) | US4797621A (fi) |
EP (1) | EP0298479B2 (fi) |
JP (1) | JPH0197830A (fi) |
CA (1) | CA1277387C (fi) |
DE (1) | DE3871262D1 (fi) |
DK (1) | DK173570B1 (fi) |
FI (1) | FI100616B (fi) |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5136249A (en) * | 1988-06-20 | 1992-08-04 | Commonwealth Scientific & Industrial Research Organization | Probes for measurement of moisture content, solids contents, and electrical conductivity |
US4949076A (en) * | 1988-10-13 | 1990-08-14 | Conoco Inc. | Apparatus for detecting and locating leakage in underwater structures |
US4970466A (en) * | 1989-03-22 | 1990-11-13 | Microtest, Inc. | TDR cable testing apparatus with pulse timing manipulation to automatically compensate for diverse cable characteristics |
GB8913720D0 (en) * | 1989-06-15 | 1989-08-02 | Cambridge Consultants | Musical instrument based on tdr tactile sensor |
US5172730A (en) * | 1989-07-03 | 1992-12-22 | Insituform Of North American, Inc. | Two-wall leakage detection system for a pipe |
DE4010622C2 (de) * | 1990-04-02 | 1997-08-21 | Rammner Rudolf Dipl Geophys | Verfahren zur Detektierung und Interpretation von Leckagen |
DE4015075C2 (de) * | 1990-05-10 | 1997-02-27 | Bernd Brandes | Verfahren zur Ermittlung von Undichtigkeiten an Leitungsrohren für flüssige Medien |
US5144250A (en) * | 1990-09-27 | 1992-09-01 | Rockwell International Corporation | Power amplifier time domain reflectometer |
US5311124A (en) * | 1991-03-11 | 1994-05-10 | Mts Systems Corporation | Emulated analog output magnetostrictive position transducer with set point selection |
US5185049A (en) * | 1991-05-23 | 1993-02-09 | Midwesco, Inc. | Apparatus for welding together dual containment pipe sections |
US5134377A (en) * | 1991-06-04 | 1992-07-28 | W. L. Gore & Associates, Inc. | TDR system and method for detecting leakage of a liquid |
AU2150592A (en) * | 1991-06-26 | 1993-01-25 | Dipl.-Ing. Wrede & Niedecken Verwaltung Gmbh | Gas and/or liquid tubular duct |
DE4124640C2 (de) * | 1991-07-25 | 1999-02-25 | Bernd Brandes | Rohrleitungssystem |
US5214412A (en) * | 1991-12-02 | 1993-05-25 | General Motors Corporation | Leak detector method establishing two different threshold levels |
US5457990A (en) * | 1991-12-03 | 1995-10-17 | Cambridge Consultants Limited | Method and apparatus for determining a fluid level in the vicinity of a transmission line |
JPH0555039U (ja) * | 1991-12-25 | 1993-07-23 | 古河電気工業株式会社 | 給湯用管体 |
US5334970A (en) * | 1992-05-21 | 1994-08-02 | Midwesco, Inc. | Alarm system |
US5355720A (en) * | 1992-06-04 | 1994-10-18 | Perma-Pipe, Inc. | Corrosion resistant cable |
DE4220409C2 (de) * | 1992-06-19 | 1995-07-20 | Siemens Ag | Verfahren zum Gewinnung von Anomalien einer zu untersuchenden Leitung |
US5258707A (en) * | 1992-07-20 | 1993-11-02 | Magnetek, Inc. | Method of noise rejection in a magnetostrictive position detector including determining a valid time range for propagation of sonic pulses over a reference distance |
ATE145059T1 (de) * | 1992-08-08 | 1996-11-15 | Bernd Brandes | Rohrleitungssystem zur leckaufspürung |
DE4323780A1 (de) * | 1992-08-10 | 1994-02-17 | Midwesco Inc | Leckerfassungs- und Ortungseinrichtung unter Verwendung eines adaptiven Bezugsschwellenwerts und analogen Vergleichs |
US5868170A (en) * | 1993-04-09 | 1999-02-09 | Simona Ag | Axial interlock system for fluid containment system having inner and outer conduits |
US5402828A (en) * | 1993-05-04 | 1995-04-04 | Pino; Richard | Closure device with dual-mandrel-acutated peripheral seal |
US5410255A (en) * | 1993-05-07 | 1995-04-25 | Perma-Pipe, Inc. | Method and apparatus for detecting and distinguishing leaks using reflectometry and conductivity tests |
US5521512A (en) * | 1993-08-16 | 1996-05-28 | The Penn State Research Foundation | Time domain reflectometer using successively delayed test pulses and an interleaved sampling procedure |
US5544175A (en) * | 1994-03-15 | 1996-08-06 | Hewlett-Packard Company | Method and apparatus for the capturing and characterization of high-speed digital information |
US5610611A (en) * | 1994-12-19 | 1997-03-11 | The Regents Of The University Of California | High accuracy electronic material level sensor |
DE19523710C2 (de) * | 1995-06-29 | 2000-07-06 | Curt Reichert | Verfahren und Vorrichtung zur Fehlerortung von Rohrleitungen |
DE19535399A1 (de) * | 1995-09-23 | 1997-03-27 | Intec Ind Electronic Gmbh & Co | Verfahren zur Erfassung von Lecks in einem ein Fluid enthaltenden bzw. führenden Hohlkörpers sowie Vorrichtung zur Durchführung dieses Verfahrens |
US5648724A (en) * | 1996-02-08 | 1997-07-15 | U.S. Army Corps Of Engineers As Represented By The Secretary Of The Army | Metallic time-domain reflectometry roof moisture sensor |
US5819582A (en) * | 1997-03-31 | 1998-10-13 | Kelly; John M. | Slow wave time-domain reflectometer point level sensor |
US6206340B1 (en) | 1997-07-18 | 2001-03-27 | Kohler Company | Radar devices for low power applications and bathroom fixtures |
AU8500298A (en) * | 1997-07-18 | 1999-02-10 | Kohler Company | Bathroom fixture using radar detector having leaky transmission line to control fluid flow |
AU8404398A (en) | 1997-07-18 | 1999-02-10 | Kohler Company | Advanced touchless plumbing systems |
DE19805263C2 (de) * | 1998-02-10 | 2001-02-08 | Brandes Gmbh | Verfahren zur Detektion und Ortung von Undichtigkeiten in Räumen, Behältern und/oder Rohrleitungssystemen |
US6305427B1 (en) | 1999-11-19 | 2001-10-23 | Kenway Corporation | Double walled apparatus and methods |
DE10117238A1 (de) * | 2001-04-06 | 2002-10-17 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur Detektion von Fehlerstellen in isolierten Leitungssystemen |
EP1248508B1 (de) * | 2001-04-06 | 2003-08-06 | Schroff GmbH | Verfahren, Anordnung und Sensor zum Prüfen der HF-Dichtigkeit eines Übergangs zwischen zwei aneinandergrenzenden Teilen |
US6504409B1 (en) | 2001-04-17 | 2003-01-07 | K-Tek Corporation | Controller for generating a periodic signal with an adjustable duty cycle |
US6853227B2 (en) | 2001-04-17 | 2005-02-08 | K-Tek Corporation | Controller for generating a periodic signal with an adjustable duty cycle |
WO2005054805A2 (en) * | 2003-12-01 | 2005-06-16 | Raymond And Lae Engineering, Inc. | Fluid detection cable |
TW200606410A (en) * | 2004-08-10 | 2006-02-16 | 3M Innovative Properties Co | Method and system for detecting liquid leakage |
US7836910B2 (en) * | 2004-12-29 | 2010-11-23 | Rain Bird Corporation | Soil moisture sensor and controller |
CN1940795B (zh) * | 2005-09-30 | 2010-10-13 | 3M新设资产公司 | 流体控制装置及其方法 |
NO327674B1 (no) * | 2007-09-12 | 2009-09-07 | Det Norske Veritas As | Anordning for deteksjon av fuktinntrengning i et isolasjonslag ved hjelp av akustisk resonans teknologi |
FR2926141B1 (fr) * | 2008-01-03 | 2010-03-19 | Commissariat Energie Atomique | Procede pour l'amelioration de la precision de detection et de localisation de defauts par reflectometrie dans un reseau electrique cable |
US8063309B2 (en) * | 2008-06-06 | 2011-11-22 | Raymond & Lae Engineering, Inc. | Twisted leak detection cable |
CA2739213A1 (en) * | 2008-10-24 | 2010-04-29 | Nexans | A moisture detection wire, a moisture detection system, and a method of detecting moisture |
US8256269B2 (en) * | 2009-05-12 | 2012-09-04 | Raymond & Lae Engineering, Inc. | Aqueous chemical leak detection cable |
US8234910B2 (en) * | 2009-05-12 | 2012-08-07 | Raymond & Lae Engineering, Inc. | Aqueous chemical leak detection cable |
US9032565B2 (en) | 2009-12-16 | 2015-05-19 | Kohler Co. | Touchless faucet assembly and method of operation |
US7920983B1 (en) | 2010-03-04 | 2011-04-05 | TaKaDu Ltd. | System and method for monitoring resources in a water utility network |
KR101006710B1 (ko) * | 2010-08-06 | 2011-01-10 | 주식회사 창성에이스산업 | 전원 및 통신선이 포함된 누액 감시 시스템 |
JP5747206B2 (ja) * | 2010-08-31 | 2015-07-08 | 株式会社潤工社 | 液体輸送パイプラインの漏洩検出装置、及びその方法 |
US8583386B2 (en) | 2011-01-18 | 2013-11-12 | TaKaDu Ltd. | System and method for identifying likely geographical locations of anomalies in a water utility network |
ITBA20110034A1 (it) * | 2011-06-23 | 2012-12-24 | Monitech S R L Monitoring Techno Logies | Apparato e metodo per il rivelamento e la localizzazione di perdite e guasti in condotte interrate |
US8341106B1 (en) | 2011-12-07 | 2012-12-25 | TaKaDu Ltd. | System and method for identifying related events in a resource network monitoring system |
US9053519B2 (en) | 2012-02-13 | 2015-06-09 | TaKaDu Ltd. | System and method for analyzing GIS data to improve operation and monitoring of water distribution networks |
US10242414B2 (en) | 2012-06-12 | 2019-03-26 | TaKaDu Ltd. | Method for locating a leak in a fluid network |
DK2706339T3 (en) * | 2012-09-10 | 2015-03-09 | Ge Oil & Gas Uk Ltd | Detection apparatus and method |
FR3029295B1 (fr) * | 2014-12-01 | 2016-12-30 | Win Ms | Procede et dispositif de detection de points chauds dans une installation, notamment pour la detection de fuites dans des conduits d'air. |
JP7047478B2 (ja) * | 2018-03-09 | 2022-04-05 | 日本電気株式会社 | 漏洩検出システムおよび漏洩検出方法 |
JP6998908B2 (ja) * | 2018-04-18 | 2022-01-18 | タツタ電線株式会社 | 位置検知システム及び位置検知方法 |
JP6998907B2 (ja) * | 2019-02-28 | 2022-01-18 | タツタ電線株式会社 | 検知システム、検知器及び検知方法 |
US11022514B1 (en) | 2020-03-13 | 2021-06-01 | Trinity Bay Equipment Holdings, LLC | Embedded return wire time domain reflectometry pipeline fault detection systems and methods |
US11895809B2 (en) * | 2021-05-12 | 2024-02-06 | Nvidia Corporation | Intelligent leak sensor system for datacenter cooling systems |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3600674A (en) * | 1969-04-02 | 1971-08-17 | Chevron Res | Method of determining leaks from buried pipelines using a time-sharing transmission line |
GB1352124A (en) * | 1970-07-08 | 1974-05-08 | Electricity Council | Cable fault location |
DE2318424A1 (de) * | 1973-04-12 | 1974-10-31 | Heinrich C Kosmeier | Vorrichtung zur ortung von kabelfehlern durch impulsreflexionsmessung |
JPS5415435B2 (fi) * | 1974-07-13 | 1979-06-14 | ||
US4041381A (en) * | 1974-10-09 | 1977-08-09 | Lim Ching Hwa | Methods and equipment for testing reflection points of transmission lines |
GB1517768A (en) * | 1975-12-24 | 1978-07-12 | Rasmussen As E | System for localizing a spot along a conductor in which an impedance change such as a break or short circuit occurs |
JPS556856A (en) * | 1978-06-28 | 1980-01-18 | Mitsubishi Electric Corp | Semiconductor integrated circuit |
JPS5856822B2 (ja) * | 1979-08-02 | 1983-12-16 | オムロン株式会社 | 流体漏洩検出装置 |
NO803157L (no) * | 1979-10-26 | 1981-04-27 | Raychem Corp | Feildetekterende foeler. |
IN158099B (fi) * | 1981-04-07 | 1986-08-30 | Bicc Plc | |
DE3125388A1 (de) * | 1981-06-27 | 1983-01-13 | Battelle-Institut E.V., 6000 Frankfurt | "verfahren und vorrichtung zur kontinuierlichen ueberwachung von fluide medien enthaltenden anlagen" |
GB2108802B (en) * | 1981-10-27 | 1985-07-24 | Univ Nottingham | Fault location in power transmission lines |
JPS58196466A (ja) * | 1982-05-13 | 1983-11-15 | Omron Tateisi Electronics Co | ケ−ブル等の特性測定方法 |
WO1986005880A1 (en) * | 1985-04-01 | 1986-10-09 | Wilfried Schoeps | Electrical sensors for the detection of leaks in conduit systems |
-
1987
- 1987-07-08 US US07/071,022 patent/US4797621A/en not_active Expired - Lifetime
-
1988
- 1988-06-17 FI FI882907A patent/FI100616B/fi active IP Right Grant
- 1988-06-21 CA CA000569942A patent/CA1277387C/en not_active Expired - Lifetime
- 1988-07-04 DK DK198803707A patent/DK173570B1/da not_active IP Right Cessation
- 1988-07-07 DE DE8888110874T patent/DE3871262D1/de not_active Expired - Fee Related
- 1988-07-07 EP EP88110874A patent/EP0298479B2/en not_active Expired - Lifetime
- 1988-07-08 JP JP63170722A patent/JPH0197830A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0298479B1 (en) | 1992-05-20 |
US4797621A (en) | 1989-01-10 |
FI882907A0 (fi) | 1988-06-17 |
FI100616B (fi) | 1998-01-15 |
DE3871262D1 (de) | 1992-06-25 |
EP0298479A2 (en) | 1989-01-11 |
DK173570B1 (da) | 2001-03-19 |
CA1277387C (en) | 1990-12-04 |
JPH0197830A (ja) | 1989-04-17 |
DK370788A (da) | 1989-01-09 |
EP0298479B2 (en) | 1996-09-25 |
DK370788D0 (da) | 1988-07-04 |
EP0298479A3 (en) | 1990-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application |
Owner name: PERMA-PIPE, INC. |
|
FG | Patent granted |
Owner name: PERMA-PIPE, INC. |