ES2063074T3 - Sensor de nivel con alta elevacion de la señal para liquidos, especialmente liquidos agresivos quimicamente. - Google Patents

Sensor de nivel con alta elevacion de la señal para liquidos, especialmente liquidos agresivos quimicamente.

Info

Publication number
ES2063074T3
ES2063074T3 ES89109720T ES89109720T ES2063074T3 ES 2063074 T3 ES2063074 T3 ES 2063074T3 ES 89109720 T ES89109720 T ES 89109720T ES 89109720 T ES89109720 T ES 89109720T ES 2063074 T3 ES2063074 T3 ES 2063074T3
Authority
ES
Spain
Prior art keywords
liquids
signal
level sensor
high elevation
chemically aggressive
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 - Lifetime
Application number
ES89109720T
Other languages
English (en)
Inventor
Siegfried Dipl-Ing Fellner
Gerhard Bisail
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of ES2063074T3 publication Critical patent/ES2063074T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • G01F23/246—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 resistance of resistors due to contact with conductor fluid thermal devices

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Thermistors And Varistors (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

UN CONDUCTOR CON COEFICIENTE DE TEMPERATURA NEGATIVO (RESISTENCIA PTC), PROVISTO DE CONEXIONES DE ALIMENTACION ELECTRICA, QUE SIRVE COMO ELEMENTO SENSOR, SE ENCUENTRA DIRECTAMENTE INCRUSTADO EN VIDRIO. LAS CONEXIONES DE ALIMENTACION VAN FIJADAS POR SOLDADURA A UNAS METALIZACIONES DEL CONDUCTOR, QUE RESISTEN A LAS TEMPERATURAS QUE SE ALCANZAN AL INCRUSTARSE EL CONDUCTOR. ESPECIALMENTE APROPIADAS SON METALIZACIONES SERIGRAFICAS DE ALUMINIO CON UN GROSOR DE UNOS 50 UM O MAS.
ES89109720T 1989-05-30 1989-05-30 Sensor de nivel con alta elevacion de la señal para liquidos, especialmente liquidos agresivos quimicamente. Expired - Lifetime ES2063074T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89109720A EP0400167B1 (de) 1989-05-30 1989-05-30 Niveaufühler mit hohem Signalhub für Flüssigkeiten, insbesondere chemisch aggressive Flüssigkeiten

Publications (1)

Publication Number Publication Date
ES2063074T3 true ES2063074T3 (es) 1995-01-01

Family

ID=8201424

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89109720T Expired - Lifetime ES2063074T3 (es) 1989-05-30 1989-05-30 Sensor de nivel con alta elevacion de la señal para liquidos, especialmente liquidos agresivos quimicamente.

Country Status (5)

Country Link
US (1) US5142267A (es)
EP (1) EP0400167B1 (es)
AT (1) ATE113374T1 (es)
DE (1) DE58908567D1 (es)
ES (1) ES2063074T3 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05234706A (ja) * 1992-02-25 1993-09-10 Rohm Co Ltd 面実装用サーミスタ
JPH11500872A (ja) * 1995-08-07 1999-01-19 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 多重線正温度係数抵抗
DE69606310T2 (de) * 1995-08-15 2001-04-05 Bourns Multifuse Hong Kong Ltd Oberflächenmontierte leitfähige bauelemente und verfahren zur herstellung derselben
TW309619B (es) 1995-08-15 1997-07-01 Mourns Multifuse Hong Kong Ltd
DE19635276C2 (de) * 1996-08-30 2003-04-24 Epcos Ag Elektro-keramisches Vielschichtbauelement und Verfahren zu seiner Herstellung
US6020808A (en) 1997-09-03 2000-02-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficent device
US6236302B1 (en) 1998-03-05 2001-05-22 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
US6242997B1 (en) 1998-03-05 2001-06-05 Bourns, Inc. Conductive polymer device and method of manufacturing same
US6172591B1 (en) 1998-03-05 2001-01-09 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
JP2002526911A (ja) 1998-09-25 2002-08-20 ブアンズ・インコーポレイテッド 正温度係数重合体物質を製造するための二段法
US6429533B1 (en) 1999-11-23 2002-08-06 Bourns Inc. Conductive polymer device and method of manufacturing same
US20030026053A1 (en) * 2001-08-06 2003-02-06 James Toth Circuit protection device
TWI353699B (en) * 2003-05-02 2011-12-01 Tyco Electronics Corp Circuit protection device and assembly thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863210A (en) * 1973-07-30 1975-01-28 Gen Motors Corp Liquid level sensor having an integral ptc and ntc thermistor
DE2429483C3 (de) * 1974-06-20 1978-05-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anordnung zur Überwachung des Niveaus leitender und/oder ätzender und/oder explosiver Flüssigkeiten und Verfahren zu ihrer Herstellung
US3896409A (en) * 1974-10-18 1975-07-22 Gen Motors Corp Liquid level sensor for corrosive baths
US4276536A (en) * 1979-09-04 1981-06-30 Scully Electronic Systems, Inc. Self-heating thermistor probe for low temperature applications
CA1175954A (en) * 1980-10-14 1984-10-09 Yellow Springs Instruments Company, Inc. (The) Glass coated disk thermistor
DE3232333C2 (de) * 1982-08-31 1984-06-07 Siemens AG, 1000 Berlin und 8000 München Niveaufühler für Flüssigkeiten, insbesondere zur Bestimmung des Füllstandes der Bremsflüssigkeit oder des Tankinhaltes in Kraftfahrzeugen
US4647895A (en) * 1985-05-08 1987-03-03 Motorola, Inc. Ceramic temperature sensor

Also Published As

Publication number Publication date
DE58908567D1 (de) 1994-12-01
ATE113374T1 (de) 1994-11-15
EP0400167B1 (de) 1994-10-26
US5142267A (en) 1992-08-25
EP0400167A1 (de) 1990-12-05

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