DE3133239C2 - - Google Patents

Info

Publication number
DE3133239C2
DE3133239C2 DE19813133239 DE3133239A DE3133239C2 DE 3133239 C2 DE3133239 C2 DE 3133239C2 DE 19813133239 DE19813133239 DE 19813133239 DE 3133239 A DE3133239 A DE 3133239A DE 3133239 C2 DE3133239 C2 DE 3133239C2
Authority
DE
Germany
Prior art keywords
differential amplifier
measuring
capacitor
voltage
capacitors
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
DE19813133239
Other languages
German (de)
English (en)
Other versions
DE3133239A1 (de
Inventor
Guenther Ing.(Grad.) 6233 Kelkheim De Schmitt
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Priority to DE19813133239 priority Critical patent/DE3133239A1/de
Publication of DE3133239A1 publication Critical patent/DE3133239A1/de
Application granted granted Critical
Publication of DE3133239C2 publication Critical patent/DE3133239C2/de
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
    • G01F23/266—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 measuring circuits therefor

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)
DE19813133239 1981-08-22 1981-08-22 Einrichtung zur kapazitiven fuellstandsmessung Granted DE3133239A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813133239 DE3133239A1 (de) 1981-08-22 1981-08-22 Einrichtung zur kapazitiven fuellstandsmessung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813133239 DE3133239A1 (de) 1981-08-22 1981-08-22 Einrichtung zur kapazitiven fuellstandsmessung

Publications (2)

Publication Number Publication Date
DE3133239A1 DE3133239A1 (de) 1983-03-10
DE3133239C2 true DE3133239C2 (US20080293856A1-20081127-C00150.png) 1990-12-13

Family

ID=6139871

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813133239 Granted DE3133239A1 (de) 1981-08-22 1981-08-22 Einrichtung zur kapazitiven fuellstandsmessung

Country Status (1)

Country Link
DE (1) DE3133239A1 (US20080293856A1-20081127-C00150.png)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19841770A1 (de) * 1998-09-11 2000-04-06 Siemens Ag Vorrichtung und Verfahren zur Füllstandsmessung
DE10119555A1 (de) * 2001-04-21 2002-10-31 Siemens Ag Füllstandssensor und Verfahren zur Erfassung eines Füllstandes in einem Behälter
DE10100624B4 (de) * 2000-01-11 2007-01-11 Delphi Technologies, Inc., Troy System zur Fluidstandsmessung
DE10309769B4 (de) * 2002-03-08 2017-10-05 Ust Umweltsensortechnik Gmbh Anordnung zur Bestimmung von Zustandsgrößen für Flüssigkeiten in einem geschlossenen nichtmetallischen Behälter

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548361B1 (fr) * 1983-07-01 1986-09-19 Lafon Sa Systeme de mesure de niveau d'un fluide contenu dans un reservoir
US4888989A (en) * 1986-02-26 1989-12-26 General Signal Corporation Level sensor system
FR2605731A1 (fr) * 1986-10-27 1988-04-29 Renault Procede de mesure du niveau d'un liquide dans un reservoir et dispositif pour sa mise en oeuvre
US4947689A (en) * 1989-01-13 1990-08-14 Hochstein Peter A Capacitive liquid sensor
DE4118170A1 (de) * 1991-06-03 1992-12-17 Hans Wittkowski Elektrisch kapazitiver pegelmesser
DE4318477A1 (de) * 1993-06-03 1995-01-05 Claas Ohg Vorrichtung zur Messung eines Massestromes
DE4442711A1 (de) * 1994-12-01 1996-06-05 Claas Ohg Kapazitive Meßvorrichtung
DE19528384C2 (de) * 1995-08-02 1999-09-30 Ulrich Pok Kapazitive Meßeinrichtung zur kontinuierlichen Standregelung für Medien unterschiedlicher Dielektrizitätskonstanten
DE102004053626A1 (de) * 2004-11-01 2006-05-04 Benjamin Hoffmeier Verfahren und Vorrichtung zum kapazitiven Füllstandsmessung
DE102009027738A1 (de) 2008-12-15 2010-06-17 Robert Bosch Gmbh Vorrichtung zur Überwachung des Kraftstofffüllstands
CN102997974B (zh) * 2012-12-24 2014-12-10 电子科技大学 一种自适应式电容液位计

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2550936C3 (de) * 1975-11-13 1978-08-31 Vega Vertrieb Und Fertigung Elektronischer Geraete Und Apparate Grieshaber Kg, 7620 Wolfach Zur kapazitiven Füllstandsmessung eines Behälters verwendete Schaltungsanordnung
DE2852212A1 (de) * 1978-12-02 1980-06-19 Vdo Schindling Einrichtung zur kapazitiven fuellstandsmessung
DE2936309A1 (de) * 1979-09-07 1981-03-26 Geoffrey S. Malvern Pa. Hedrick Vorrichtung zum angeben einer stroemungsmittelmenge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19841770A1 (de) * 1998-09-11 2000-04-06 Siemens Ag Vorrichtung und Verfahren zur Füllstandsmessung
DE10100624B4 (de) * 2000-01-11 2007-01-11 Delphi Technologies, Inc., Troy System zur Fluidstandsmessung
DE10119555A1 (de) * 2001-04-21 2002-10-31 Siemens Ag Füllstandssensor und Verfahren zur Erfassung eines Füllstandes in einem Behälter
DE10119555B4 (de) * 2001-04-21 2005-03-03 Siemens Ag Füllstandssensor zur Erfassung eines Füllstandes in einem Behälter
DE10309769B4 (de) * 2002-03-08 2017-10-05 Ust Umweltsensortechnik Gmbh Anordnung zur Bestimmung von Zustandsgrößen für Flüssigkeiten in einem geschlossenen nichtmetallischen Behälter

Also Published As

Publication number Publication date
DE3133239A1 (de) 1983-03-10

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee