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CA2423781A1 - Procede de detection d'un niveau pre-determine d'une matiere, et dispositif associe - Google Patents

Procede de detection d'un niveau pre-determine d'une matiere, et dispositif associe Download PDF

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Publication number
CA2423781A1
CA2423781A1 CA002423781A CA2423781A CA2423781A1 CA 2423781 A1 CA2423781 A1 CA 2423781A1 CA 002423781 A CA002423781 A CA 002423781A CA 2423781 A CA2423781 A CA 2423781A CA 2423781 A1 CA2423781 A1 CA 2423781A1
Authority
CA
Canada
Prior art keywords
rods
sensing
predetermined level
device therefor
limit state
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
CA002423781A
Other languages
English (en)
Other versions
CA2423781C (fr
Inventor
Herrmann Best
Markus Hertel
Michael Kessler
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.)
Endress and Hauser SE and Co KG
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
Priority claimed from DE20016962U external-priority patent/DE20016962U1/de
Application filed by Individual filed Critical Individual
Publication of CA2423781A1 publication Critical patent/CA2423781A1/fr
Application granted granted Critical
Publication of CA2423781C publication Critical patent/CA2423781C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/2845—Electromagnetic waves for discrete levels

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

Procédé et dispositif de détection de l'état limite d'une matière à constante diélectrique donnée. Ledit dispositif comporte un élément de support dans lequel sont placés deux tiges électriquement conductrices qui sont immergées dans la matière à surveiller lorsque l'état limite est atteint et qui sont connectées à un circuit électrique. Ce dernier produit des impulsions d'émission à haute fréquence qui sont transmises aux tiges par l'intermédiaire d'une ligne, selon le principe de la réflectométrie à dimension temporelle. Les signaux réfléchis par la couche constituant la limite entre la matière et l'air sont évalués à l'aide de leur forme de courbe.
CA002423781A 2000-09-27 2001-09-19 Procede de detection d'un niveau pre-determine d'une matiere, et dispositif associe Expired - Fee Related CA2423781C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE20016962.9 2000-09-27
DE20016962U DE20016962U1 (de) 2000-09-27 2000-09-27 Zeitbereichsreflektometer für den Einsatz als Grenzwertschalter zur Erfassung des Grenzstandes eines Gutes
DE10115150.0 2001-03-27
DE10115150A DE10115150A1 (de) 2000-09-27 2001-03-27 Verfahren zur Erfassung des Grenzstandes eines Gutes und Vorrichtung hierzu
PCT/EP2001/010813 WO2002027349A2 (fr) 2000-09-27 2001-09-19 Procede de detection de l'etat limite d'une matiere et dispositif associe

Publications (2)

Publication Number Publication Date
CA2423781A1 true CA2423781A1 (fr) 2003-03-26
CA2423781C CA2423781C (fr) 2009-02-24

Family

ID=26008927

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002423781A Expired - Fee Related CA2423781C (fr) 2000-09-27 2001-09-19 Procede de detection d'un niveau pre-determine d'une matiere, et dispositif associe

Country Status (6)

Country Link
EP (1) EP1322922A2 (fr)
JP (1) JP2004519661A (fr)
CN (1) CN1250944C (fr)
AU (1) AU2002218183A1 (fr)
CA (1) CA2423781C (fr)
WO (1) WO2002027349A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7639176B2 (en) 2005-11-30 2009-12-29 Vega Grieshaber Kg Reference pulse generation
US20110214502A1 (en) * 2008-12-06 2011-09-08 Jingdong Zhang Level
US8276443B2 (en) 2007-02-08 2012-10-02 Krohne Messetechnik GmbH & Co. KG Method of using a level meter employing the radar principle
US10704948B2 (en) 2016-06-14 2020-07-07 Vega Grieshaber Kg Reflection microwave barrier

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360711A1 (de) * 2003-12-19 2005-07-14 Endress + Hauser Gmbh + Co. Kg Füllstandsmeßgerät und Verfahren zur Füllstandsmessung und -überwachung
CN102735313B (zh) * 2012-06-19 2014-07-30 郭云昌 一种确定连续式无源核子料位计中料位曲线的方法
DE102014103212A1 (de) * 2014-03-11 2015-09-17 Sick Ag Sensor und Verfahren zum Erkennen eines auf einer Rollenbahn befindlichen Objekts
DE102015100415A1 (de) * 2015-01-13 2016-07-14 Krohne Messtechnik Gmbh Vorrichtung zur Bestimmung des Füllstands eines Mediums
DE102015100417A1 (de) * 2015-01-13 2016-07-14 Krohne Messtechnik Gmbh Verfahren zur Bestimmung des Füllstands eines Mediums in einem Behälter
HUE036364T2 (hu) * 2015-02-03 2018-07-30 Grieshaber Vega Kg Határszint kapcsoló integrált szintérzékelõvel
DE102015202448A1 (de) * 2015-02-11 2016-08-11 Vega Grieshaber Kg Auswerteverfahren für einen TDR-Grenzstandschalter
JP6716791B2 (ja) * 2016-11-11 2020-07-01 レオニ カーベル ゲーエムベーハー 導線を監視するための方法と測定装置
GB2569540A (en) * 2017-12-19 2019-06-26 Rosemount Measurement Ltd Improvements in or relating to interface detection
DK3527959T3 (da) * 2018-02-14 2024-01-15 Grieshaber Vega Kg Fyldeniveauradar med vedhæftningsdetektor
DE102021201364A1 (de) * 2021-02-12 2022-08-18 Vega Grieshaber Kg Messeinrichtung mit Lagesensor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407369C2 (de) * 1994-03-05 1999-09-30 Grieshaber Vega Kg Verfahren und Schaltungsanordnung zur Laufzeitmessung sowie deren Verwendung
US5884231A (en) * 1995-12-21 1999-03-16 Endress & Hauser Gmbh & Co. Processor apparatus and method for a process measurement signal
US6085589A (en) * 1996-12-23 2000-07-11 Venture Measurement Company Llc Material level sensing system calibration
US5943908A (en) * 1997-09-08 1999-08-31 Teleflex Incorporated Probe for sensing fluid level
EP1128169A1 (fr) * 1999-12-29 2001-08-29 Endress + Hauser GmbH + Co. Méthode et dispositif pour la détermination du niveau limite d'un produit dans un récipient

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7639176B2 (en) 2005-11-30 2009-12-29 Vega Grieshaber Kg Reference pulse generation
US8276443B2 (en) 2007-02-08 2012-10-02 Krohne Messetechnik GmbH & Co. KG Method of using a level meter employing the radar principle
US20110214502A1 (en) * 2008-12-06 2011-09-08 Jingdong Zhang Level
US10704948B2 (en) 2016-06-14 2020-07-07 Vega Grieshaber Kg Reflection microwave barrier

Also Published As

Publication number Publication date
JP2004519661A (ja) 2004-07-02
WO2002027349A3 (fr) 2002-10-24
CA2423781C (fr) 2009-02-24
AU2002218183A1 (en) 2002-04-08
CN1250944C (zh) 2006-04-12
EP1322922A2 (fr) 2003-07-02
CN1466674A (zh) 2004-01-07
WO2002027349A2 (fr) 2002-04-04

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