FR2388257A1 - Transducteur pour mesurer par voie capacitive le niveau d'un liquide - Google Patents

Transducteur pour mesurer par voie capacitive le niveau d'un liquide

Info

Publication number
FR2388257A1
FR2388257A1 FR7811099A FR7811099A FR2388257A1 FR 2388257 A1 FR2388257 A1 FR 2388257A1 FR 7811099 A FR7811099 A FR 7811099A FR 7811099 A FR7811099 A FR 7811099A FR 2388257 A1 FR2388257 A1 FR 2388257A1
Authority
FR
France
Prior art keywords
electrode
level
steel
liquid
transducer
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
FR7811099A
Other languages
English (en)
Other versions
FR2388257B1 (fr
Inventor
Bernd Walter Emmerich
Rudolf Ehret
Gerhard Hoyer
Hans Rainer Trampert
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.)
Pfaudler GmbH
Original Assignee
Pfaudler Werke GmbH
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 Pfaudler Werke GmbH filed Critical Pfaudler Werke GmbH
Publication of FR2388257A1 publication Critical patent/FR2388257A1/fr
Application granted granted Critical
Publication of FR2388257B1 publication Critical patent/FR2388257B1/fr
Granted 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
    • G01F23/268—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 mounting arrangements of probes

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 Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

a. Transducteur pour mesurer par voie capacitive le niveau d'un liquide. b. Il comprend deux électrodes isolées l'une de l'autre, et dans lequel est encastrée, dans une couche d'émail située sur un corps d'acier servant de contre-électrode, une électrode en forme de ruban, la capacité partielle fonction du niveau du remplissage entre cette électrode et le corps d'acier, laquelle est déterminée par la fraction des lignes de champ qui, en se rendant de ladite électrode audit corps d'acier, traverse du côté opposé au corps d'acier, un trajet à travers ledit liquide, étant utilisée pour mesurer le niveau de remplissage, caractérisé en ce que dans la couche d'émail 3, entre la bande-électrode 1 et la surface de la couche d'émail, est encastrée une bande métallique d'écran 2 qui est plus large que la bande-électrode et qui protège une partie de la longueur de cette dernière. c. Concerne les appareils de mesure pour la chimie.
FR7811099A 1977-04-19 1978-04-14 Transducteur pour mesurer par voie capacitive le niveau d'un liquide Granted FR2388257A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2717301A DE2717301B1 (de) 1977-04-19 1977-04-19 Messumformer zur kapazitiven Fuellstandsmessung von Fluessigkeitsfuellungen

Publications (2)

Publication Number Publication Date
FR2388257A1 true FR2388257A1 (fr) 1978-11-17
FR2388257B1 FR2388257B1 (fr) 1983-02-04

Family

ID=6006676

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7811099A Granted FR2388257A1 (fr) 1977-04-19 1978-04-14 Transducteur pour mesurer par voie capacitive le niveau d'un liquide

Country Status (11)

Country Link
US (1) US4178623A (fr)
JP (2) JPS53130070A (fr)
BR (1) BR7802444A (fr)
CA (1) CA1103329A (fr)
CH (1) CH625880A5 (fr)
DE (1) DE2717301B1 (fr)
FR (1) FR2388257A1 (fr)
GB (1) GB1581516A (fr)
IT (1) IT1102698B (fr)
MX (1) MX144623A (fr)
NL (1) NL7804126A (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383445A (en) * 1981-01-29 1983-05-17 Combustion Engineering, Inc. Capacitance circuit for level measurement
US4499640A (en) * 1982-08-25 1985-02-19 Berwind Corporation Method of manufacturing capacitance-type material level indicator probe
US4499641A (en) * 1982-09-20 1985-02-19 Berwind Corporation Method of manufacturing capacitance-type material level indicator probe
DE3373703D1 (en) * 1982-09-09 1987-10-22 Shell Int Research Capacitive level gauge
US4549245A (en) * 1982-09-20 1985-10-22 Berwind Corporation Capacitance-type material level probe and method of manufacture
DE3521004A1 (de) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Steueranordnung fuer einen elektromotorischen antrieb
GB2180939A (en) * 1985-09-25 1987-04-08 Partridge Wilson And Company L Equipment for detecting when the level of a liquid in a container drops below a predetermined level
DE3843339A1 (de) * 1988-12-22 1990-06-28 Vega Grieshaber Gmbh & Co Anordnung zur kapazitiven fuellstandsmessung
AT391401B (de) * 1989-04-12 1990-10-10 Koenig Helmut Vorrichtung zum portionieren von teig
DE4131582A1 (de) * 1991-09-23 1993-03-25 Elektro Merseburg Gmbh I G Kapazitive fuellstandsmesseinrichtung
WO2006133357A2 (fr) 2005-06-08 2006-12-14 Lumenite Control Technology Inc. Emetteur a niveau de liquide a etalonnage automatique
JP4967673B2 (ja) * 2007-01-16 2012-07-04 パナソニック株式会社 電気機器の液体容器
DE102007010627B4 (de) * 2007-03-02 2014-03-20 KROHNE Meßtechnik GmbH & Co. KG Füllstandsmeßgerät
US8424381B1 (en) 2009-06-05 2013-04-23 Liquid Measurement Systems, Inc. Fluid level measuring device
US8878682B2 (en) * 2009-10-16 2014-11-04 Franklin Fueling Systems, Inc. Method and apparatus for detection of phase separation in storage tanks using a float sensor
EP2598858B1 (fr) 2010-07-26 2023-12-20 Veeder-Root Company Un ensemble de flotteurs de séparation de phases à utiliser avec une sonde de niveau de carburant, comme une sonde magnétostrictive

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288300A1 (fr) * 1974-10-15 1976-05-14 Pfaudler Werke Ag Sonde a electrode isolee pour mesure capacitive de niveau

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998559A (en) * 1961-08-29 Dielectric contents gauge capacitor and method of manufacture
US3025201A (en) * 1957-07-15 1962-03-13 Lamtex Ind Inc Electrically non-conductive structural element
GB941645A (en) * 1961-03-28 1963-11-13 Dag Schreiber Improvements in or relating to flow measurement devices
US3706980A (en) * 1970-04-27 1972-12-19 Drexelbrook Controls Rf system for measuring the level of materials
US3838318A (en) * 1973-04-02 1974-09-24 Gen Electric Antenna assembly for a capacitance-responsive safety device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288300A1 (fr) * 1974-10-15 1976-05-14 Pfaudler Werke Ag Sonde a electrode isolee pour mesure capacitive de niveau

Also Published As

Publication number Publication date
NL7804126A (nl) 1978-10-23
JPS62156836U (fr) 1987-10-05
DE2717301B1 (de) 1978-08-31
US4178623A (en) 1979-12-11
IT7848826A0 (it) 1978-04-10
IT1102698B (it) 1985-10-07
MX144623A (es) 1981-10-30
CA1103329A (fr) 1981-06-16
BR7802444A (pt) 1978-12-26
CH625880A5 (fr) 1981-10-15
JPS53130070A (en) 1978-11-13
GB1581516A (en) 1980-12-17
DE2717301C2 (fr) 1979-05-03
FR2388257B1 (fr) 1983-02-04
JPH035863Y2 (fr) 1991-02-14

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