CA1055137A - Thermal liquid level detector - Google Patents

Thermal liquid level detector

Info

Publication number
CA1055137A
CA1055137A CA244,480A CA244480A CA1055137A CA 1055137 A CA1055137 A CA 1055137A CA 244480 A CA244480 A CA 244480A CA 1055137 A CA1055137 A CA 1055137A
Authority
CA
Canada
Prior art keywords
thermistor
probe
external surface
liquid
thermal
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
Application number
CA244,480A
Other languages
English (en)
French (fr)
Inventor
William P. Waiwood
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.)
ITT Inc
Original Assignee
ITT Industries Inc
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 ITT Industries Inc filed Critical ITT Industries Inc
Application granted granted Critical
Publication of CA1055137A publication Critical patent/CA1055137A/en
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
    • G01F23/24—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
    • G01F23/247—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 for discrete levels

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
CA244,480A 1975-01-30 1976-01-29 Thermal liquid level detector Expired CA1055137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/545,503 US3955416A (en) 1975-01-30 1975-01-30 Thermal liquid level detector

Publications (1)

Publication Number Publication Date
CA1055137A true CA1055137A (en) 1979-05-22

Family

ID=24176515

Family Applications (1)

Application Number Title Priority Date Filing Date
CA244,480A Expired CA1055137A (en) 1975-01-30 1976-01-29 Thermal liquid level detector

Country Status (6)

Country Link
US (1) US3955416A (US07223432-20070529-C00017.png)
JP (1) JPS51126176A (US07223432-20070529-C00017.png)
CA (1) CA1055137A (US07223432-20070529-C00017.png)
DE (1) DE2602394A1 (US07223432-20070529-C00017.png)
FR (1) FR2299630A1 (US07223432-20070529-C00017.png)
GB (1) GB1488104A (US07223432-20070529-C00017.png)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367276A1 (fr) * 1976-10-06 1978-05-05 Jaeger Dispositif permettant le controle du niveau de liquide contenu dans un reservoir
LU82312A1 (fr) * 1980-04-01 1981-12-02 Arbed Systeme de mesure des niveaux du bain de metal et de la scorie dans un creuset metallurgique qu cours-e l'affinage de la fonte brute
US4326199A (en) * 1980-08-11 1982-04-20 Texas Instruments Incorporated Autoreferencing liquid level sensing apparatus and method
DE3201708C2 (de) * 1982-01-21 1986-07-31 Kernforschungsanlage Jülich GmbH, 5170 Jülich Meßfühler zur Bestimmung der Standhöhe von flüssigen Gasen
US4583401A (en) * 1982-11-30 1986-04-22 Basf Aktiengesellschaft Method and apparatus for measuring the level of liquids or agitated charges in vessels
US4630036A (en) * 1983-01-26 1986-12-16 Vernay Laboratories, Inc. Early warning of marine cooling system failure
FR2552876B1 (fr) * 1983-09-29 1985-10-25 Commissariat Energie Atomique Systeme thermique de mesure de niveau de liquide
US4774838A (en) * 1986-03-03 1988-10-04 Adwel Industries Limited Liquid level indicating apparatus
US4890492A (en) * 1988-09-06 1990-01-02 Emhart Industries, Inc. Differential pressure level sensor with temperature sensing elements
GB2231659B (en) * 1989-05-12 1993-02-17 British Aerospace Measurement of mass of fluid in a container
US5434555A (en) * 1993-05-17 1995-07-18 Magnetrol International, Inc. Thermal dispersion switch with self test circuit
JPH07199636A (ja) * 1993-12-28 1995-08-04 Fujitsu Ltd トナーの残量検出装置
DE4434559C2 (de) * 1994-09-28 1999-09-02 Mannesmann Vdo Ag Verfahren und Anordnung zum Betrieb eines Füllstandssensors
EP1074390A1 (en) * 1999-08-03 2001-02-07 Domino Printing Sciences Plc Liquid level sensor
US6536276B2 (en) * 2001-02-27 2003-03-25 Rosemont Aerospace Inc. Apparatus and method to non-intrusively measure the level of liquid in a sealed container
US7181965B2 (en) * 2004-12-20 2007-02-27 International Business Machines Corporation Self-heated liquid level sensor
US7596998B2 (en) * 2006-07-19 2009-10-06 Therm-O-Disc, Incorporated Liquid level sensor using thick film substrate
US9593795B2 (en) 2009-11-02 2017-03-14 General Electric Technology Gmbh Fuel head assembly with replaceable wear components
US8562091B2 (en) * 2010-03-09 2013-10-22 Xerox Corporation Apparatus and method for detecting ink in a reservoir using an overdriven thermistor and an electrical conductor extending from the thermistor
US8789564B2 (en) * 2011-01-21 2014-07-29 Marathon Petroleum Company Lp Asphalt loading arm
KR102225059B1 (ko) * 2016-12-27 2021-03-09 가부시키가이샤 후지킨 액면계, 그것을 구비한 기화기, 및 액면 검지 방법
US11814506B2 (en) 2019-07-02 2023-11-14 Marathon Petroleum Company Lp Modified asphalts with enhanced rheological properties and associated methods

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808290C (de) * 1949-03-20 1951-07-12 Basf Ag Fluessigkeitsstandanzeiger
US2928037A (en) * 1954-12-02 1960-03-08 Avien Inc Thermistor liquid level switch
DE1253473B (de) * 1964-03-24 1967-11-02 Siemens Ag Einrichtung zur Bestimmung des Fluessigkeitspegels in einem Gefaess
US3324722A (en) * 1964-12-23 1967-06-13 Atomic Power Dev Ass Inc Continuous fluid level measuring apparatus
JPS5216528B2 (US07223432-20070529-C00017.png) * 1973-08-11 1977-05-10
US3836882A (en) * 1973-08-16 1974-09-17 Gte Sylvania Inc Temperature compensated fluid sensor device

Also Published As

Publication number Publication date
US3955416A (en) 1976-05-11
GB1488104A (en) 1977-10-05
FR2299630B1 (US07223432-20070529-C00017.png) 1979-07-20
JPS51126176A (en) 1976-11-04
JPS5529370B2 (US07223432-20070529-C00017.png) 1980-08-02
DE2602394A1 (de) 1976-08-05
FR2299630A1 (fr) 1976-08-27

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