FR2135291B1 - - Google Patents

Info

Publication number
FR2135291B1
FR2135291B1 FR7215919A FR7215919A FR2135291B1 FR 2135291 B1 FR2135291 B1 FR 2135291B1 FR 7215919 A FR7215919 A FR 7215919A FR 7215919 A FR7215919 A FR 7215919A FR 2135291 B1 FR2135291 B1 FR 2135291B1
Authority
FR
France
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
Application number
FR7215919A
Other versions
FR2135291A1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2135291A1 publication Critical patent/FR2135291A1/fr
Application granted granted Critical
Publication of FR2135291B1 publication Critical patent/FR2135291B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/265—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors for discrete levels

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
FR7215919A 1971-05-06 1972-05-04 Expired FR2135291B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH674271A CH538114A (de) 1971-05-06 1971-05-06 Vorrichtung zur Digitalen, kapazitiven Messung der örtlichen Lage von Trennschichten zwischen mindestens zwei aneinandergrenzenden Medien

Publications (2)

Publication Number Publication Date
FR2135291A1 FR2135291A1 (fr) 1972-12-15
FR2135291B1 true FR2135291B1 (fr) 1975-07-18

Family

ID=4314306

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7215919A Expired FR2135291B1 (fr) 1971-05-06 1972-05-04

Country Status (5)

Country Link
US (1) US3777257A (fr)
CH (1) CH538114A (fr)
DE (1) DE2221741C3 (fr)
FR (1) FR2135291B1 (fr)
GB (1) GB1395573A (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007636A (en) * 1973-08-30 1977-02-15 Mine Safety Appliances Company Liquid metal level indicator
US3911744A (en) * 1974-04-10 1975-10-14 Liquidometer Corp Liquid level gauging apparatus
US3935739A (en) * 1974-04-10 1976-02-03 Liquidometer Corporation Liquid level gauging apparatus
US3952593A (en) * 1974-08-01 1976-04-27 Liquidometer Corporation Liquid level gauge
FR2386811A1 (fr) * 1977-04-06 1978-11-03 Elf Aquitaine Detecteur de niveau de separation entre deux liquides
US4145927A (en) * 1977-11-10 1979-03-27 Larson Roger G Apparatus for determining the liquid level in a tank
US4190797A (en) * 1978-03-31 1980-02-26 Gould Inc. Capacitive gauging system utilizing a low internal capacitance, high impedance amplifier means
DE2908449C2 (de) * 1979-03-05 1986-04-03 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtng zur kapazitiven Füllstandsmessung insbesondere in einem Kraftfahrzeugtank
DE3138765C2 (de) * 1981-09-25 1983-11-17 Hans Renens Vaud Meyer Verfahren zur Herstellung eines Maßstabes
CH648929A5 (fr) * 1982-07-07 1985-04-15 Tesa Sa Dispositif de mesure capacitif de deplacement.
US4490679A (en) * 1982-08-09 1984-12-25 Texaco Inc. Probe type paraffin monitor
SE456613B (sv) * 1985-03-14 1988-10-17 Skega Ab Elektrod for metning av relativ kapacitivitet
US4591946A (en) * 1985-04-30 1986-05-27 Southwest Pump Company Capacitance probe for use in a measuring system for location of a liquid level interface
US4885529A (en) * 1988-03-10 1989-12-05 Lee David O Identification of fluids and an interface between fluids by measuring complex impedance
GB2223589B (en) * 1988-09-14 1991-07-24 Valk Rob V D Measurement of capacitance and parameters related thereto
US5012683A (en) * 1990-01-18 1991-05-07 E. I. Dupont De Nemours And Company Capacitive liquid interface sensor
US5611240A (en) * 1992-04-03 1997-03-18 Toyota Tsusho Corporation Level detector
US5321366A (en) * 1992-08-31 1994-06-14 Murata Mfg. Co. Ltd. Capacitance sensor apparatus of divided multi-electrode type
JP3471881B2 (ja) * 1993-02-01 2003-12-02 リー／マータク・エンジニアリング・インコーポレイテッド 変動する流体位及び傾斜検知プローブ装置
DE69530074T2 (de) * 1995-06-07 2004-03-04 Brown & Sharpe Tesa S.A. Kapazitive Messvorrichtung
DE19531124C2 (de) * 1995-08-24 1997-08-14 Krohne Ag Verfahren zur Bestimmung des Phasenanteils eines Mediums in offenen und geschlossenen Leitungen
DE19644777C1 (de) * 1996-10-28 1998-06-04 Sican Gmbh Füllstandssensor mit einer Anzahl kapazitiver Sensoren
DE19713267A1 (de) * 1997-01-28 1998-07-30 Abb Research Ltd Verfahren zur Bestimmung der Dielektrizitätskonstante und/oder der Leitfähigkeit mindestens eines Mediums sowie Vorrichtung zur Durchführung des Verfahrens
DE19916979A1 (de) * 1999-04-15 2000-11-02 Sican Gmbh Verfahren zur Füllstandsmessung und Füllstandssensor
DE10161918C2 (de) * 2001-12-17 2003-10-23 Bosch Gmbh Robert Verfahren zum Betrieb eines Füllstandssensors und Füllstandssensor
US7185960B2 (en) * 2003-07-30 2007-03-06 Hewlett-Packard Development Company, L.P. Printing device having a printing fluid detector
US20080018346A1 (en) * 2004-09-10 2008-01-24 Mehrdad Mehdizadeh System for Detecting an Interface Between First and Second Strata of Materials
US7538561B2 (en) * 2004-09-10 2009-05-26 E. I. Du Pont De Nemours And Company Method for detecting an interface between first and second strata of materials
US20080297159A1 (en) * 2004-09-10 2008-12-04 Mehrdad Mehdizadeh Sensing Apparatus for Detecting an Interface Between First and Second Strata of Materials
BRPI0504625A (pt) * 2005-07-05 2006-05-30 Indebras Ind Eletromecanica Br dispositivo para a indicação do nìvel de um lìquido armazenado no interior de um reservatório
US20080034847A1 (en) * 2006-08-10 2008-02-14 Golter Lee B Appartus and method for content discrimination
GB201019683D0 (en) * 2010-11-19 2011-01-05 Domino Printing Sciences Plc Improvements in or relating to inkjet printers
RU2456552C1 (ru) * 2010-12-15 2012-07-20 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Способ определения уровня диэлектрического вещества
DE112015004614T5 (de) * 2014-10-08 2017-06-22 Semiconductor Components Industries, Llc Pegelsensor und Verfahren
RU2650745C1 (ru) * 2016-07-12 2018-04-17 Публичное акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Устройство для определения уровня диэлектрического вещества

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754478A (en) * 1951-07-27 1956-07-10 Lever Brothers Ltd Apparatus for measuring dielectric properties of materials
US3181557A (en) * 1962-11-02 1965-05-04 Jr James E Lannan Liquid interface sensor
US3297941A (en) * 1963-01-23 1967-01-10 Sogenique Electronics Ltd Position-sensitive apparatus
US3301056A (en) * 1963-06-14 1967-01-31 Trans Sonics Inc Liquid measuring system
GB1110175A (en) * 1964-06-04 1968-04-18 Rosemount Eng Co Ltd Improvements in or relating to fluid level sensors
US3360951A (en) * 1966-02-14 1968-01-02 King Seeley Thermos Co Ice level control for refrigeration mechanism
GB1215092A (en) * 1968-02-12 1970-12-09 Rank Organisation Ltd Improvements in or relating to position responsive apparatus
US3644821A (en) * 1969-01-14 1972-02-22 Atomic Energy Commission Capacitance method and apparatus for detecting an interface between electrically conductive immiscible liquids
US3665209A (en) * 1969-10-22 1972-05-23 T H Creears Corp Fluid level control system

Also Published As

Publication number Publication date
DE2221741B2 (de) 1973-10-31
GB1395573A (en) 1975-05-29
CH538114A (de) 1973-06-15
FR2135291A1 (fr) 1972-12-15
US3777257A (en) 1973-12-04
DE2221741C3 (de) 1974-05-30
DE2221741A1 (de) 1972-11-23

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Legal Events

Date Code Title Description
ST Notification of lapse