CA2370174A1 - Status detection apparatus and method for fluid-filled electrical equipment - Google Patents

Status detection apparatus and method for fluid-filled electrical equipment Download PDF

Info

Publication number
CA2370174A1
CA2370174A1 CA002370174A CA2370174A CA2370174A1 CA 2370174 A1 CA2370174 A1 CA 2370174A1 CA 002370174 A CA002370174 A CA 002370174A CA 2370174 A CA2370174 A CA 2370174A CA 2370174 A1 CA2370174 A1 CA 2370174A1
Authority
CA
Canada
Prior art keywords
fluid
electrical equipment
sensors
detection apparatus
status detection
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.)
Granted
Application number
CA002370174A
Other languages
French (fr)
Other versions
CA2370174C (en
Inventor
Edward Brittain Stokes
Steven Hector Azzaro
Thomas G. O'keeffe
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.)
General Electric Co
Original Assignee
General Electric Company
Edward Brittain Stokes
Steven Hector Azzaro
Thomas G. O'keeffe
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 General Electric Company, Edward Brittain Stokes, Steven Hector Azzaro, Thomas G. O'keeffe filed Critical General Electric Company
Publication of CA2370174A1 publication Critical patent/CA2370174A1/en
Application granted granted Critical
Publication of CA2370174C publication Critical patent/CA2370174C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
    • G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2888—Lubricating oil characteristics, e.g. deterioration

Abstract

A status detection apparatus for electrical equipment includes a plurality of distributed multiparameter sensors in a contain-ment vessel or other fluid filled region of the electrical equipment. The sensors are capable of providing data relating to plural parameters of the fluid simultaneously at different positions in the fluid. The data provided by the sensors can be processed to permit localization of incipient faults or can indicate other operating states when combined with known flow data of the fluid through the electrical equipment. A method for detecting status of electrical equipment includes sensing parameters simultaneously at multiple locations in the fluid and determining operating status based on the sensed parameters.
CA002370174A 1999-04-30 2000-04-25 Status detection apparatus and method for fluid-filled electrical equipment Expired - Fee Related CA2370174C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/302,299 1999-04-30
US09/302,299 US6494617B1 (en) 1999-04-30 1999-04-30 Status detection apparatus and method for fluid-filled electrical equipment
PCT/US2000/011121 WO2000067019A1 (en) 1999-04-30 2000-04-25 Status detection apparatus and method for fluid-filled electrical equipment

Publications (2)

Publication Number Publication Date
CA2370174A1 true CA2370174A1 (en) 2000-11-09
CA2370174C CA2370174C (en) 2009-03-24

Family

ID=23167151

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002370174A Expired - Fee Related CA2370174C (en) 1999-04-30 2000-04-25 Status detection apparatus and method for fluid-filled electrical equipment

Country Status (10)

Country Link
US (1) US6494617B1 (en)
EP (1) EP1177437B1 (en)
JP (1) JP5196692B2 (en)
AR (1) AR028825A1 (en)
BR (1) BR0010695B1 (en)
CA (1) CA2370174C (en)
DE (1) DE60003675T2 (en)
ES (1) ES2202118T3 (en)
MX (1) MXPA01010907A (en)
WO (1) WO2000067019A1 (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935515A1 (en) * 1999-07-28 2001-02-01 Abb Patent Gmbh Device for measuring the contact pressure of a winding press element in a power transformer
GB0019176D0 (en) * 2000-08-05 2000-09-27 Cambridge Material Science Lim Monitoring thermal events
AU2002311624A1 (en) * 2002-03-01 2003-09-16 Anil Kohli On-line detection and measurement system for gases in oil-filled electrical equipment
AU2003241519A1 (en) * 2002-05-21 2003-12-12 Acrolon Technologies, Inc. System and method for temperature sensing and monitoring
US7530257B2 (en) * 2002-09-27 2009-05-12 Honeywell International Inc. Phased micro analyzer VIII
US20040223882A1 (en) * 2002-09-27 2004-11-11 Ulrich Bonne Micro-plasma sensor system
US7494326B2 (en) * 2003-12-31 2009-02-24 Honeywell International Inc. Micro ion pump
US20050063865A1 (en) * 2002-09-27 2005-03-24 Ulrich Bonne Phased VII micro fluid analyzer having a modular structure
US7104112B2 (en) * 2002-09-27 2006-09-12 Honeywell International Inc. Phased micro analyzer IV
US7000452B2 (en) * 2002-09-27 2006-02-21 Honeywell International Inc. Phased micro fluid analyzer
US20040224422A1 (en) * 2002-09-27 2004-11-11 Ulrich Bonne Phased micro analyzer III, IIIA
WO2004029602A2 (en) * 2002-09-27 2004-04-08 Honeywell International Inc. Phased micro analyser
US6837118B2 (en) * 2002-12-05 2005-01-04 Honeywell International Inc. Health monitor
US6842718B2 (en) * 2003-02-06 2005-01-11 General Electric Company Intelligent auxiliary cooling system
US9029028B2 (en) 2003-12-29 2015-05-12 Honeywell International Inc. Hydrogen and electrical power generator
US20050142035A1 (en) * 2003-12-31 2005-06-30 Ulrich Bonne Micro-discharge sensor system
US7502109B2 (en) 2005-05-17 2009-03-10 Honeywell International Inc. Optical micro-spectrometer
US7578167B2 (en) * 2005-05-17 2009-08-25 Honeywell International Inc. Three-wafer channel structure for a fluid analyzer
US7339447B2 (en) * 2005-12-01 2008-03-04 Unelectra International Corp. High-voltage transformer coil with acoustic wave guiding function
DE102007015683A1 (en) * 2007-03-31 2008-10-02 Abb Research Ltd. Method for determining spatially distributed physical and chemical quantities of a fluid
DE102007026175B4 (en) * 2007-06-05 2009-10-01 Areva Energietechnik Gmbh Method for determining the aging of an electrical transformer
US20080312557A1 (en) * 2007-06-18 2008-12-18 Dong Uk Cho Method and system for measuring urinary flow rate
US7747417B2 (en) * 2007-08-06 2010-06-29 Arizona Public Service Company Method and system for transformer dissolved gas harmonic regression analysis
US8002957B2 (en) * 2008-01-02 2011-08-23 General Electric Company Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid
AU2009200007A1 (en) * 2008-01-10 2009-07-30 Chk Gridsense Pty Ltd A transformer and a method of monitoring an operation property of the transformer
CA2619920A1 (en) * 2008-02-06 2009-08-06 Hydro-Quebec Method for measuring the temperature of the hot spot in an electric device containing oil
KR101280571B1 (en) 2008-12-19 2013-07-02 도트 메트릭스 테크놀로지스, 인코포레이티드 Systems and methods for performing the bacterial disinfection of a fluid using point radiation sources
US20100277869A1 (en) * 2009-09-24 2010-11-04 General Electric Company Systems, Methods, and Apparatus for Cooling a Power Conversion System
EP2420845B1 (en) * 2010-08-19 2014-12-10 Abb Ag System for generating / collecting, saving and making available data from an electric facility comprising a cooling or working liquid
US8836523B2 (en) 2011-05-20 2014-09-16 General Electric Company Fault gas alarm system
US8405991B2 (en) * 2011-05-20 2013-03-26 General Electric Company Heat transfer element temperature variation system
US9046423B2 (en) * 2012-08-01 2015-06-02 Qualitrol Company, Llc Hybrid mechanical and electrical transformer monitor
KR101990780B1 (en) * 2012-11-01 2019-06-19 한국전력공사 Apparatus for measuring dissolved gas concentrations in oil filled transformer and method thereof
US11338048B2 (en) 2012-12-11 2022-05-24 Aquisense Technologies Llc Apparatus for irradiation
EP2989705B1 (en) * 2013-04-22 2021-12-22 Hitachi Energy Switzerland AG Method and apparatus for defect pre-warning of power device
EP2899728B2 (en) 2014-01-22 2019-11-13 ABB Schweiz AG A device comprising a high voltage apparatus including a fluid and equipment for detecting one or more physical properties of the fluid
US20160064142A1 (en) * 2014-08-26 2016-03-03 Roman Manufacturing, Inc. Transformer with integrated fluid flow sensor
DE102016219378A1 (en) * 2016-10-06 2018-04-12 Siemens Aktiengesellschaft Electrical device with different degrees of cooled encapsulation spaces
DE102016219406A1 (en) 2016-10-06 2018-04-12 Siemens Aktiengesellschaft Electrical device with several cooling units
EP3563134A4 (en) * 2016-12-31 2020-07-15 ABB Schweiz AG Systems and methods for monitoring components in a power transformer or the like
US10151695B2 (en) 2017-03-16 2018-12-11 Oetiker Ny, Inc. Optical assurance cap
DE102018201488A1 (en) 2018-01-31 2019-08-01 Siemens Aktiengesellschaft Electrical device with pressing plates for clamping a magnetizable core
JP7385104B2 (en) * 2019-07-04 2023-11-22 富士通株式会社 Combustion stop device and liquid immersion cooling system
EP3767651A1 (en) * 2019-07-17 2021-01-20 Siemens Aktiengesellschaft Method for operating a cooling system of a transformer

Family Cites Families (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795779A (en) 1954-12-20 1957-06-11 Westinghouse Electric Corp Transformer overload indicators
US2917701A (en) * 1957-08-02 1959-12-15 Mc Graw Edison Co Forced-cooled transformer having winding temperature relay
US3144770A (en) * 1961-01-30 1964-08-18 Gen Electric Means for determining an internal condition in electrical apparatus
US3680359A (en) 1968-05-02 1972-08-01 Mc Graw Edison Co Transformer having incipient fault detector
JPS5145770B1 (en) 1970-08-27 1976-12-06
US3797314A (en) * 1972-07-10 1974-03-19 Asea Ab Means for determining the top oil temperature in transformers
US3821605A (en) 1972-08-10 1974-06-28 Westinghouse Electric Corp Remote transformer monitoring system
SE370793B (en) * 1973-03-01 1974-10-28 Asea Ab
US3832600A (en) 1973-05-17 1974-08-27 Westinghouse Electric Corp Transformer internal fault detector
US3864628A (en) 1973-05-29 1975-02-04 Inst Gas Technology Selective solid-state gas sensors and method
US3866460A (en) 1973-05-30 1975-02-18 Westinghouse Electric Corp Gas detector for fluid-filled electrical apparatus
US3855503A (en) 1973-09-26 1974-12-17 Westinghouse Electric Corp Remotely monitored and controlled transformer
US3960017A (en) * 1975-02-10 1976-06-01 Qualitrol Corporation Thermometer insertable in winding of fluid cooled transformer
US4236404A (en) 1976-08-31 1980-12-02 General Electric Company Device for monitoring dissolved gases in electrical insulating liquids such as transformer oils
AT345014B (en) * 1976-10-08 1978-08-25 Elin Union Ag TEMPERATURE MEASURING DEVICE FOR TRANSFORMERS AND REACTORS
US4058373A (en) 1977-02-18 1977-11-15 Electric Power Research Institute Combustible gas-in-oil detector
CA1098187A (en) * 1977-02-23 1981-03-24 George F. Mitchell, Jr. Vaporization cooled and insulated electrical inductive apparatus
US4112737A (en) 1977-04-27 1978-09-12 Morgan Schaffer Corporation Transformer fault detection
US4129501A (en) 1977-09-07 1978-12-12 Haynes Edward M Method and apparatus for detecting water in oil
US4179927A (en) * 1977-09-28 1979-12-25 Electric Power Research Institute, Inc. Temperature sensing device
JPS5466194A (en) 1977-11-04 1979-05-28 Kuraray Co Fet sensor
US4232551A (en) * 1979-03-19 1980-11-11 General Electric Company Leak detector for vaporization cooled transformers
CA1167279A (en) 1980-05-20 1984-05-15 Katuo Sugawara System for monitoring abnormality of oil-filled electric devices
US4347732A (en) 1980-08-18 1982-09-07 Leary David J Gas monitoring apparatus
US4394635A (en) * 1981-04-16 1983-07-19 General Electric Company Method for determining dissolved gas concentrations in dielectric coolants
US4508461A (en) 1981-09-22 1985-04-02 Westinghouse Electric Corp. Distributed fiber optic temperature monitoring apparatus and method
US4446420A (en) 1982-01-28 1984-05-01 Hydro Quebec Method and device for detecting and locating fault and/or partial discharges in a gas-insulated electrical equipment
JPS58158551A (en) * 1982-03-16 1983-09-20 Kanegafuchi Chem Ind Co Ltd Method for measuring combustible component
US4483631A (en) * 1982-08-02 1984-11-20 Hri, Inc. Multiple thermocouple system for high temperature reactors
US5696863A (en) 1982-08-06 1997-12-09 Kleinerman; Marcos Y. Distributed fiber optic temperature sensors and systems
US5363463A (en) 1982-08-06 1994-11-08 Kleinerman Marcos Y Remote sensing of physical variables with fiber optic systems
AT378623B (en) * 1982-11-15 1985-09-10 Elin Union Ag DEVICE FOR THE THERMAL MONITORING OF LIQUID-COOLED TRANSFORMERS AND THROTTLE COILS
JPS6058601A (en) * 1983-09-12 1985-04-04 Toshiba Corp Monitoring apparatus for oil-immersed electric apparatus
US4654806A (en) 1984-03-30 1987-03-31 Westinghouse Electric Corp. Method and apparatus for monitoring transformers
US4517468A (en) 1984-04-30 1985-05-14 Westinghouse Electric Corp. Diagnostic system and method
US4644479A (en) 1984-07-31 1987-02-17 Westinghouse Electric Corp. Diagnostic apparatus
JPS6273607A (en) * 1985-09-27 1987-04-04 Toshiba Corp Abnormality detection device for oil-immersed apparatus
JP2510498B2 (en) 1985-10-14 1996-06-26 東京電力株式会社 Transformer failure detection method and device
US4754405A (en) 1986-02-14 1988-06-28 Qualitrol Corporation Tri-phase electronic temperature controller
GB8606045D0 (en) 1986-03-12 1986-04-16 Emi Plc Thorn Gas sensitive device
US4763514A (en) 1986-05-14 1988-08-16 Mitsubishi Denki Kabushiki Kaisha Monitoring equipment for dissolved gas in insulating oil
US4730479A (en) 1986-06-23 1988-03-15 The Standard Oil Company Temperature and humidity compensation for gas detection apparatus
IT1196798B (en) 1986-11-24 1988-11-25 Cselt Centro Studi Lab Telecom TEMPERATURE DISTRIBUTED SENSOR USING AN OPTICAL FIBER AS A SENSITIVE ELEMENT
US4890478A (en) 1987-09-11 1990-01-02 Westinghouse Electric Corp. Gas-in-oil monitoring apparatus and method
US4827487A (en) 1987-12-11 1989-05-02 Westinghouse Electric Corp. Distributed temperature sensing system for stator windings
US4823224A (en) 1988-01-21 1989-04-18 Qualitrol Corporation Rapid pressure rise circuit
US5132920A (en) 1988-02-16 1992-07-21 Westinghouse Electric Corp. Automated system to prioritize repair of plant equipment
US4944178A (en) 1988-04-18 1990-07-31 Nissin Electric Co., Ltd Apparatus and method for measuring dissolved gas in oil
US4964125A (en) 1988-08-19 1990-10-16 Hughes Aircraft Company Method and apparatus for diagnosing faults
US5099436A (en) 1988-11-03 1992-03-24 Allied-Signal Inc. Methods and apparatus for performing system fault diagnosis
US4947104A (en) 1989-01-19 1990-08-07 Stephen C. Pyke Device and method for detection of fluid concentration utilizing charge storage in a MIS diode
US5018075A (en) 1989-03-24 1991-05-21 Bull Hn Information Systems Inc. Unknown response processing in a diagnostic expert system
DE3914860A1 (en) 1989-05-07 1990-11-08 Hartmann Hans HYDRAULIC DRIVE DEVICE
US5113277A (en) 1989-06-22 1992-05-12 Hitachi Cable Limited Fiber optic distributed temperature sensor system
US4953387A (en) 1989-07-31 1990-09-04 The Regents Of The University Of Michigan Ultrathin-film gas detector
US5225395A (en) 1989-08-11 1993-07-06 Kabushiki Kaisha Toshiba Supervisory system for superconductive transformer
US5123017A (en) 1989-09-29 1992-06-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Remote maintenance monitoring system
US5062092A (en) 1989-11-24 1991-10-29 General Electric Company Jukebox having rotatable disk stack
FR2656098B1 (en) 1989-12-20 1992-04-24 Inst Francais Du Petrole DEVICE FOR STUDYING THE AGING OF A FLUID IN CIRCULATION, UNDER SPECIFIC CONDITIONS IMPOSED.
JP3268529B2 (en) 1990-03-14 2002-03-25 株式会社日立製作所 Knowledge database processing system and expert system
JPH03269215A (en) * 1990-03-19 1991-11-29 Hitachi Ltd Measured-value displaying apparatus
US5035511A (en) 1990-04-10 1991-07-30 The Babcock & Wilcox Company Distributed fiber optic temperature sensor based on time domain transmission
JP2878387B2 (en) * 1990-05-10 1999-04-05 株式会社ジャパンエナジー Insulation material deterioration diagnosis device
DE69121789T2 (en) 1990-06-04 1997-04-03 Hitachi Ltd Control device for controlling a controlled system and control method therefor
US5286109A (en) 1990-06-28 1994-02-15 Schlumberger Industries Limited Distributed temperature sensor
JPH04177710A (en) * 1990-11-13 1992-06-24 Toshiba Corp Abnormality diagnosis device of gas insulation equipment
US5133046A (en) 1991-01-03 1992-07-21 Pickard, Lowe And Carrick (Plc) Computer-based diagnostic expert system organized according to Bayesian theory
US5078437A (en) 1991-03-05 1992-01-07 Abb Power T&D Company, Inc. Transformer having an integral cabinet with door latching and locking apparatus
US5191206A (en) 1991-04-16 1993-03-02 Electric Power Research Institute, Inc. Distributed fiber optic sensor using clad material light backscattering
US5255208A (en) 1991-08-08 1993-10-19 Aeg Westinghouse Transportation Systems, Inc. On-line processor based diagnostic system
US5414645A (en) 1991-10-25 1995-05-09 Mazda Motor Corporation Method of fault diagnosis in an apparatus having sensors
FR2684248B1 (en) 1991-11-22 1997-04-30 Pioch Sa ELECTRONIC APPARATUS FOR MEASURING AND PROTECTING THE OPERATION OF THE OIL TRANSFORMER.
US5261747A (en) * 1992-06-22 1993-11-16 Trustees Of Dartmouth College Switchable thermoelectric element and array
WO1994010553A1 (en) 1992-10-23 1994-05-11 Optex Biomedical, Inc. Fibre-optic probe for the measurement of fluid parameters
US5400018A (en) 1992-12-22 1995-03-21 Caterpillar Inc. Method of relaying information relating to the status of a vehicle
US5445347A (en) 1993-05-13 1995-08-29 Hughes Aircraft Company Automated wireless preventive maintenance monitoring system for magnetic levitation (MAGLEV) trains and other vehicles
US5396172A (en) 1993-07-20 1995-03-07 Ontario Hydro Transformer fault analyzer
US5591321A (en) 1993-11-02 1997-01-07 Electric Power Research Institute Detection of fluids with metal-insulator-semiconductor sensors
US5417821A (en) 1993-11-02 1995-05-23 Electric Power Research Institute Detection of fluids with metal-insulator-semiconductor sensors
US5566092A (en) 1993-12-30 1996-10-15 Caterpillar Inc. Machine fault diagnostics system and method
JPH07230929A (en) * 1994-02-16 1995-08-29 Meidensha Corp Internal failure-diagnosing method for oil immersed stationary electric machine
US5448772A (en) 1994-08-29 1995-09-05 Motorola, Inc. Stacked double balanced mixer circuit
US5586305A (en) 1994-10-21 1996-12-17 Hewlett-Packard Company Smart distributed measurement and control system with a flexible architecture
JPH08124751A (en) * 1994-10-25 1996-05-17 Mitsubishi Electric Corp Method for diagnosing service life and abnormality of oil-immersed electric equipment
DE69513937T2 (en) 1994-11-17 2000-07-20 Alcatel Sa Method for measuring and detecting physical quantities using a multi-point sensor
JPH08273939A (en) * 1995-03-30 1996-10-18 Hitachi Ltd Gas-insulated transformer
US5806011A (en) 1995-12-04 1998-09-08 General Electric Company Method and apparatus for performance based assessment of locomotive diesel engines
US5659126A (en) 1996-04-19 1997-08-19 Farber; Milton Gas chromatograph techniques for on-line testing of transformer faults
US5775808A (en) * 1996-06-19 1998-07-07 Applied Materials, Inc. Apparatus for real-time, in situ measurement of temperature and a method of fabricating and using same
CA2180233C (en) 1996-06-28 2000-09-26 Jean-Pierre Gibeault Method and apparatus for thermally inducing circulation of fluid between the interior of a system and a fluid pocket attached thereto
US5845272A (en) 1996-11-29 1998-12-01 General Electric Company System and method for isolating failures in a locomotive
US5936715A (en) 1997-01-29 1999-08-10 Art Group, Inc. On-line method and apparatus for determining the condition of circulating fluids
US5783152A (en) 1997-03-24 1998-07-21 The United States Of America As Represented By The United States Department Of Energy Thin-film fiber optic hydrogen and temperature sensor system
EP0932034B1 (en) * 1998-01-27 2004-06-09 Michael Hesky GmbH Temperature measuring and monitoring device
US6157282A (en) * 1998-12-29 2000-12-05 Square D Company Transformer cooling method and apparatus therefor

Also Published As

Publication number Publication date
EP1177437B1 (en) 2003-07-02
BR0010695B1 (en) 2012-11-27
DE60003675D1 (en) 2003-08-07
US6494617B1 (en) 2002-12-17
BR0010695A (en) 2002-04-23
JP5196692B2 (en) 2013-05-15
AR028825A1 (en) 2003-05-28
WO2000067019A1 (en) 2000-11-09
JP2002543605A (en) 2002-12-17
ES2202118T3 (en) 2004-04-01
DE60003675T2 (en) 2004-04-15
MXPA01010907A (en) 2002-05-06
CA2370174C (en) 2009-03-24
EP1177437A1 (en) 2002-02-06

Similar Documents

Publication Publication Date Title
CA2370174A1 (en) Status detection apparatus and method for fluid-filled electrical equipment
WO2004036379A3 (en) Arrangement and method for detecting abnormalities and inconsistencies in a body
WO2002102242A1 (en) Monitoring apparatus
AU6046700A (en) Use of spatiotemporal response behavior in sensor arrays to detect analytes in fluids
WO2005050228A3 (en) Electrochemical impedance measurement system and method for use thereof
CA2292127A1 (en) Monitoring system for weight lifting implements
CA2309411A1 (en) Abnormality detecting apparatus for a rotating electric machine
EP0444200A4 (en) Piping abnormality monitoring apparatus
CA2354944A1 (en) Sensor fault detection, isolation and accomodation
WO2002035185A3 (en) A fault tolerant liquid measurement system using multiple-model state estimators
CA2263443A1 (en) Process for determining the status of an organism by peptide measurement
WO2005020120A3 (en) A system and method for detecting signal artifacts
FR2745093B1 (en) METHOD AND DEVICE FOR DETECTING THE PRESENCE OF A LIVING BEING OF A PARTICULAR SPECIES IN A SPACE MONITORED BY A DOPPLER SENSOR
EP1106997A3 (en) Method and device for measuring oil in water
WO2002018978A8 (en) Multi-axis locator for detection of buried targets
CA2124299A1 (en) Fluid level sensing systems
EP1999495A2 (en) Electric field sensor for marine environments
WO2005022102A3 (en) Method and system for measuring torque
CA2195530A1 (en) Method and apparatus for detecting the condition of the flow of liquid metal in and from a teeming vessel
FR2808589B1 (en) METHOD OF DETECTING DEFECTS IN THE OPERATION OF SENSOR SIGNALS
CA2321539A1 (en) Inflow detection apparatus and system for its use
CA2018337A1 (en) Register mark detection
WO2002044657A3 (en) Method for detecting faulty liquid level sensors
EP1780555A3 (en) Thin-film device for detection of physical quantities, in particular a magnetic field, and corresponding method of detection
WO2004036338A3 (en) Context acquisition based on load sensing

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20180425