DE69425160D1 - Vorrichtung zur messung von materialeigenschaft - Google Patents

Vorrichtung zur messung von materialeigenschaft

Info

Publication number
DE69425160D1
DE69425160D1 DE69425160T DE69425160T DE69425160D1 DE 69425160 D1 DE69425160 D1 DE 69425160D1 DE 69425160 T DE69425160 T DE 69425160T DE 69425160 T DE69425160 T DE 69425160T DE 69425160 D1 DE69425160 D1 DE 69425160D1
Authority
DE
Germany
Prior art keywords
signal
output signal
integrated
square wave
provides
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 - Fee Related
Application number
DE69425160T
Other languages
English (en)
Other versions
DE69425160T2 (de
Inventor
L Brown
J Fougere
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.)
Falmouth Scientific Inc
Original Assignee
Falmouth Scientific Inc
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 Falmouth Scientific Inc filed Critical Falmouth Scientific Inc
Publication of DE69425160D1 publication Critical patent/DE69425160D1/de
Application granted granted Critical
Publication of DE69425160T2 publication Critical patent/DE69425160T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/22—Measuring resistance of fluids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
DE69425160T 1993-12-07 1994-12-06 Vorrichtung zur messung von materialeigenschaft Expired - Fee Related DE69425160T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/163,356 US5455513A (en) 1993-12-07 1993-12-07 System for measuring properties of materials
PCT/US1994/013955 WO1995016197A1 (en) 1993-12-07 1994-12-06 System for measuring properties of materials

Publications (2)

Publication Number Publication Date
DE69425160D1 true DE69425160D1 (de) 2000-08-10
DE69425160T2 DE69425160T2 (de) 2001-03-15

Family

ID=22589675

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69425160T Expired - Fee Related DE69425160T2 (de) 1993-12-07 1994-12-06 Vorrichtung zur messung von materialeigenschaft

Country Status (8)

Country Link
US (1) US5455513A (de)
EP (1) EP0733201B1 (de)
JP (1) JPH09511056A (de)
AT (1) ATE194426T1 (de)
AU (1) AU1335595A (de)
CA (1) CA2177694A1 (de)
DE (1) DE69425160T2 (de)
WO (1) WO1995016197A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424833C2 (de) * 1994-07-14 1998-12-17 Mannesmann Vdo Ag Schaltungsanordnung zur Messung des Widerstandes eines Feuchtesensors
JP3558741B2 (ja) * 1995-06-28 2004-08-25 株式会社鶴見精機 電気伝導度測定回路及び電気伝導度測定用プロ−ブ
US6232786B1 (en) 1996-10-03 2001-05-15 Ysi Incorporated Apparatus and method for measuring conductivity
US6414493B1 (en) * 2001-03-26 2002-07-02 Rosemount Analytical Inc. Toroid conductivity sensor
ITMI20010874A1 (it) * 2001-04-26 2002-10-26 Whirlpool Co Dispositivo addolcitore in particolare per apparecchi domestici come lavastoviglie lavabiancheria e simili
US6750661B2 (en) * 2001-11-13 2004-06-15 Caliper Life Sciences, Inc. Method and apparatus for controllably effecting samples using two signals
USRE49221E1 (en) 2002-06-14 2022-09-27 Parker Intangibles, Llc Single-use manifolds for automated, aseptic handling of solutions in bioprocessing applications
US7078909B2 (en) * 2003-12-12 2006-07-18 Rosemount Analytical Inc. Flow-through conductivity sensor
AU2005205611B2 (en) * 2004-01-15 2010-08-05 The University Of Southern Queensland Method and apparatus for measuring electrical conductivity
US7857506B2 (en) * 2005-12-05 2010-12-28 Sencal Llc Disposable, pre-calibrated, pre-validated sensors for use in bio-processing applications
DE102006025098B4 (de) * 2006-05-19 2008-06-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sensor zur Ermittlung der elektrischen Leitfähigkeit flüssiger Medien und ein Verfahren zu seiner Herstellung
WO2008089259A2 (en) 2007-01-16 2008-07-24 Veeder-Root Company Automated fuel quality detection and dispenser control system and method, particularly for aviation fueling applications
CN101629984B (zh) * 2008-07-14 2014-04-02 梅特勒-托利多仪器（上海）有限公司 电磁式溶液电导率测量装置的断路和短路检测方法及装置
CN101629924B (zh) * 2008-07-14 2013-01-30 梅特勒-托利多仪器（上海）有限公司 用于电磁式溶液电导率测量的输入电路
CN101629923B (zh) * 2008-07-14 2013-05-15 梅特勒-托利多仪器（上海）有限公司 电磁式溶液电导率的测量方法及装置
DE102009026403A1 (de) * 2009-05-20 2010-11-25 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Induktive Leitfähigkeits-Messzelle und Verfahren zum Betreiben derselben
DE102010029762A1 (de) 2010-06-07 2011-12-08 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Verfahren zur Bestimmung einer Restkopplung eines induktiven Leitfähigkeitssensors
DE102012106384B4 (de) 2012-07-16 2016-05-25 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Verfahren zur Ermittlung zumindest einer Fehlfunktion eines konduktiven Leitfähigkeitssensors
US9530290B2 (en) 2013-01-18 2016-12-27 Fuel Guard Systems Corporation Apparatuses and methods for providing visual indication of dynamic process fuel quality delivery conditions with use of multiple colored indicator lights
CN109187656B (zh) * 2013-03-15 2021-11-16 伊利昂科技有限公司 测量物质的电学性能的装置和方法
US9410910B1 (en) 2013-05-23 2016-08-09 D-2 Inc. Hybrid conductivity sensor
JP6448007B2 (ja) * 2014-07-23 2019-01-09 国立研究開発法人物質・材料研究機構 高速応答・高感度乾湿応答センサー
EP3594128B1 (de) 2015-01-29 2021-06-30 Ray Hutchinson Automatische wasser- und partikeldetektion zur ausgabe von kraftstoff, einschliesslich flugzeugtreibstoff, und zugehörige vorrichtungen, systeme und verfahren
DE102016212986A1 (de) 2016-07-15 2018-01-18 Volkswagen Aktiengesellschaft Flüssigkeitsmessvorrichtung und Messkopfvorrichtung zur Feuchtigkeitsdetektion, insbesondere in Behältnissen für flüssigkeitssensitive Elektrik- und/oder Elektronikkomponenten in Straßenfahrzeugen
JP6752167B2 (ja) * 2017-02-27 2020-09-09 アズビル株式会社 電気伝導率計

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370892A (en) * 1980-07-10 1983-02-01 Fischer & Porter Co. Electromagnetic flowmeter having noise suppression network

Also Published As

Publication number Publication date
JPH09511056A (ja) 1997-11-04
DE69425160T2 (de) 2001-03-15
WO1995016197A1 (en) 1995-06-15
ATE194426T1 (de) 2000-07-15
US5455513A (en) 1995-10-03
EP0733201A4 (de) 1996-10-02
CA2177694A1 (en) 1995-06-15
EP0733201B1 (de) 2000-07-05
AU1335595A (en) 1995-06-27
EP0733201A1 (de) 1996-09-25

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee