DE4237554A1 - - Google Patents

Info

Publication number
DE4237554A1
DE4237554A1 DE4237554A DE4237554A DE4237554A1 DE 4237554 A1 DE4237554 A1 DE 4237554A1 DE 4237554 A DE4237554 A DE 4237554A DE 4237554 A DE4237554 A DE 4237554A DE 4237554 A1 DE4237554 A1 DE 4237554A1
Authority
DE
Germany
Prior art keywords
signal
frequency
output
voltage signal
fuel
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
DE4237554A
Other languages
German (de)
English (en)
Other versions
DE4237554C2 (de
Inventor
Kenji Ogawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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
Priority claimed from JP28977891A external-priority patent/JPH05126778A/ja
Priority claimed from JP28984491A external-priority patent/JPH05126779A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of DE4237554A1 publication Critical patent/DE4237554A1/de
Application granted granted Critical
Publication of DE4237554C2 publication Critical patent/DE4237554C2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2617—Measuring dielectric properties, e.g. constants
    • G01R27/2635—Sample holders, electrodes or excitation arrangements, e.g. sensors or measuring cells
    • G01R27/267—Coils or antennae arrangements, e.g. coils surrounding the sample or transmitter/receiver antennae

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE4237554A 1991-11-06 1992-11-06 Vorrichtung zur Messung der Dielektrizitätskonstante eines Brennstoffs Expired - Fee Related DE4237554C2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28977891A JPH05126778A (ja) 1991-11-06 1991-11-06 燃料の誘電率検知装置
JP28984491A JPH05126779A (ja) 1991-11-06 1991-11-06 燃料の誘電率検知装置

Publications (2)

Publication Number Publication Date
DE4237554A1 true DE4237554A1 (enExample) 1993-05-13
DE4237554C2 DE4237554C2 (de) 1995-08-03

Family

ID=26557745

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4237554A Expired - Fee Related DE4237554C2 (de) 1991-11-06 1992-11-06 Vorrichtung zur Messung der Dielektrizitätskonstante eines Brennstoffs

Country Status (2)

Country Link
US (1) US5313168A (enExample)
DE (1) DE4237554C2 (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960010689B1 (ko) * 1991-08-28 1996-08-07 미쓰비시덴키 가부시키가이샤 연료의 유전율 검지센서
JPH0572164A (ja) * 1991-09-10 1993-03-23 Mitsubishi Electric Corp 燃料の誘電率検知装置
JP2925423B2 (ja) 1993-03-15 1999-07-28 三菱電機株式会社 燃料のアルコール濃度検知装置
JP3126872B2 (ja) * 1994-05-12 2001-01-22 三菱電機株式会社 燃料の混合比率検知装置
JP3160474B2 (ja) * 1994-09-12 2001-04-25 株式会社東芝 マイクロ波濃度計
US5824889A (en) * 1997-03-06 1998-10-20 Kavlico Corporation Capacitive oil deterioration and contamination sensor
GB9709290D0 (en) * 1997-05-07 1997-06-25 Collister Christopher J Electrical measurement apparatus for oil
DE19736528A1 (de) * 1997-08-22 1999-02-25 Ruhrgas Ag Verfahren zur verbrennungslosen Messung des Brennwertes von Brenngas
US5929754A (en) * 1997-12-03 1999-07-27 Kavlico Corporation High-sensitivity capacitive oil deterioration and level sensor
US6477474B2 (en) * 1999-01-21 2002-11-05 Rosemount Inc. Measurement of process product dielectric constant using a low power radar level transmitter
US6782328B2 (en) 1999-01-21 2004-08-24 Rosemount Inc. Measurement of concentration of material in a process fluid
DE102004016958B4 (de) * 2004-04-06 2006-08-31 Testo Ag Messvorrichtung zum Messen des Zustands von Ölen und Fetten
US7775092B2 (en) * 2008-02-07 2010-08-17 Ssi Technologies, Inc. Fuel delivery system and method
JP4465725B2 (ja) * 2008-04-04 2010-05-19 株式会社デンソー 液体用濃度測定装置
JP2010210241A (ja) * 2009-03-06 2010-09-24 Denso Corp 液体用濃度測定装置
FR2945124B1 (fr) * 2009-04-29 2011-07-08 Burkert Werke Gmbh & Co Kg Procede et dispositif de mesure de la concentration d'un analyte dans un liquide echantillon
GB0910075D0 (en) * 2009-06-11 2009-07-22 Wivenhoe Technology Ltd Dielctic Characterisation of liquid crystals
US9063067B1 (en) 2010-11-17 2015-06-23 Alvin P. Schmitt Moisture sensing devices
US9465001B2 (en) 2014-09-15 2016-10-11 Bourns, Inc. Conductive liquid property measurement using variable phase mixing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499841A1 (en) * 1991-02-18 1992-08-26 Mitsubishi Denki Kabushiki Kaisha Dielectric constant detection apparatus for fuel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443218A (en) * 1966-07-07 1969-05-06 Industrial Nucleonics Corp Hybrid phase dielectric materials gauging system with input signal frequency automatically variable in response to a deviation from a reference phase shift which is also variable with frequency
US4272718A (en) * 1977-11-30 1981-06-09 Sumitomo Electric Industries, Ltd. Moisture meter
US4228393A (en) * 1978-08-14 1980-10-14 Brown & Williamson Tobacco Corporation Moisture meter
JPS57163873A (en) * 1981-03-30 1982-10-08 Nec Home Electronics Ltd Measuring device for electrostatic capacity
JPS57168169A (en) * 1981-04-10 1982-10-16 Nissan Motor Co Ltd Electrostatic capacitance detector
JPS59218036A (ja) * 1983-05-25 1984-12-08 Sony Corp 位相比較回路
US4675596A (en) * 1984-09-10 1987-06-23 Zidex Systems Digital fluid analyzer using capacitive sensing
US5014011A (en) * 1988-05-31 1991-05-07 Ford Motor Company Capacitance measuring apparatus with means for nulling the resistive component
JP2693523B2 (ja) * 1988-10-18 1997-12-24 株式会社リコー 多点同期方式の光走査装置
US5099202A (en) * 1990-02-26 1992-03-24 General Electric Company Phase shift generator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499841A1 (en) * 1991-02-18 1992-08-26 Mitsubishi Denki Kabushiki Kaisha Dielectric constant detection apparatus for fuel

Also Published As

Publication number Publication date
DE4237554C2 (de) 1995-08-03
US5313168A (en) 1994-05-17

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee