FR2691536B1 - Dispositif pour detecter et controler le niveau d'un liquide. - Google Patents
Dispositif pour detecter et controler le niveau d'un liquide.Info
- Publication number
- FR2691536B1 FR2691536B1 FR9301461A FR9301461A FR2691536B1 FR 2691536 B1 FR2691536 B1 FR 2691536B1 FR 9301461 A FR9301461 A FR 9301461A FR 9301461 A FR9301461 A FR 9301461A FR 2691536 B1 FR2691536 B1 FR 2691536B1
- Authority
- FR
- France
- Prior art keywords
- detecting
- controlling
- liquid
- level
- 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
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
-
- 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)
- Control Of Non-Electrical Variables (AREA)
- Control Of Washing Machine And Dryer (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/888,339 US5197329A (en) | 1992-05-22 | 1992-05-22 | PTC water level sensor and control |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2691536A1 FR2691536A1 (fr) | 1993-11-26 |
FR2691536B1 true FR2691536B1 (fr) | 1996-10-25 |
Family
ID=25393007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9301461A Expired - Fee Related FR2691536B1 (fr) | 1992-05-22 | 1993-02-10 | Dispositif pour detecter et controler le niveau d'un liquide. |
Country Status (3)
Country | Link |
---|---|
US (1) | US5197329A (fr) |
FR (1) | FR2691536B1 (fr) |
IT (1) | IT1268513B1 (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0529067A (ja) * | 1991-07-25 | 1993-02-05 | Rohm Co Ltd | 加熱体の構造及びoa機器の加熱装置 |
DE4434559C2 (de) * | 1994-09-28 | 1999-09-02 | Mannesmann Vdo Ag | Verfahren und Anordnung zum Betrieb eines Füllstandssensors |
US5589823A (en) * | 1994-12-29 | 1996-12-31 | Lange; Robert | Remote status indicator for holding tanks containing no moving parts |
US5825908A (en) * | 1995-12-29 | 1998-10-20 | Medical Media Systems | Anatomical visualization and measurement system |
DE19653879A1 (de) * | 1996-12-21 | 1998-06-25 | Mannesmann Vdo Ag | Füllstandsgrenzgeber und Verfahren zur Ermittlung eines Unter- oder Überschreitens einer vorgesehenen Füllhöhe von Flüssigkeit in einem Behälter |
US6223595B1 (en) * | 1998-06-04 | 2001-05-01 | Illinois Tool Works Inc | Resistive fluid level sensing and control system |
US6050112A (en) * | 1998-06-15 | 2000-04-18 | Alliance Laundry Systems Llc | Apparatus and method for detecting a liquid level in a sealed storage vessel |
US6098457A (en) * | 1999-01-18 | 2000-08-08 | Cts Corporation | Fluid level detector using thermoresistive sensor |
US6278092B1 (en) * | 1999-12-29 | 2001-08-21 | Chia-Hsiung Wu | Lagging device |
AU2003245146A1 (en) * | 2002-06-28 | 2004-01-19 | Genieo Solutions Design | Apparatus for external monitoring of the fluid level in a container |
US20050161063A1 (en) * | 2004-01-28 | 2005-07-28 | Clouser Michael T. | Apparatus and method for controlling the water level in a residential dishwasher |
DE102004026396B4 (de) * | 2004-05-29 | 2007-10-31 | Itw Automotive Products Gmbh & Co. Kg | Vorrichtung zur Messung der Füllstandshöhe und/oder der Temperatur in einem Behälter |
US20060010611A1 (en) * | 2004-07-16 | 2006-01-19 | Snow David L | Washing machine water level controller |
US8536496B2 (en) * | 2004-09-15 | 2013-09-17 | Watlow Electric Manufacturing Company | Adaptable layered heater system |
EP1803328B1 (fr) * | 2004-09-30 | 2012-04-11 | Watlow Electric Manufacturing Company | Systeme de chauffage modulaire en couches |
US7473868B2 (en) * | 2005-06-30 | 2009-01-06 | R. W. Beckett Corporation | Fail safe HVAC temperature and medium presence sensor |
US8418550B2 (en) | 2008-12-23 | 2013-04-16 | Little Giant Pump Company | Method and apparatus for capacitive sensing the top level of a material in a vessel |
WO2022149011A1 (fr) * | 2021-11-27 | 2022-07-14 | Basiri Salar | Appareil de mesure de niveau de liquide |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE155207C (fr) * | ||||
US3145567A (en) * | 1958-11-17 | 1964-08-25 | Nuclear Corp Of America | Liquid level indicator |
US3058303A (en) * | 1959-06-15 | 1962-10-16 | United Aircraft Corp | Liquid rocket propellant utilization control |
US3111031A (en) * | 1962-03-07 | 1963-11-19 | Motorola Inc | Fluid level indicator |
GB1149607A (en) * | 1967-01-26 | 1969-04-23 | Danfoss As | Liquid-level measuring equipment |
DE2201910C3 (de) * | 1972-01-15 | 1974-10-03 | Daimler-Benz Ag, 7000 Stuttgart | Vorrichtung zur Niveau- und/oder Temperaturkontrolle von Flüssigkeiten |
JPS5222948A (en) * | 1975-08-15 | 1977-02-21 | Automob Antipollut & Saf Res Center | Liquid level detector |
US4129848A (en) * | 1975-09-03 | 1978-12-12 | Raytheon Company | Platinum film resistor device |
DE3022398A1 (de) * | 1980-06-14 | 1982-01-07 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Einrichtung zum elektrischen ueberwachen des niveaus einer in einem behaelter enthaltenen fluessigkeit |
DE3115776A1 (de) * | 1981-04-18 | 1983-01-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Thermoelektrische fuellstandsmesseinrichtung |
FR2526159A1 (fr) * | 1982-04-30 | 1983-11-04 | Jaeger | Dispositif de mesure de niveaux entierement statique |
US4564834A (en) * | 1983-10-11 | 1986-01-14 | General Motors Corporation | Thermal liquid level detector |
FR2562711B1 (fr) * | 1984-04-10 | 1987-01-23 | Renix Electronique Sa | Resistance haute tension de precision a faible encombrement en technologie couches epaisses |
JPS62261928A (ja) * | 1986-05-09 | 1987-11-14 | Yokogawa Electric Corp | 液面測定装置 |
US4720997A (en) * | 1986-12-01 | 1988-01-26 | Doak Roni K | Material level monitor |
US4780705A (en) * | 1987-02-10 | 1988-10-25 | Enterprise Brass Works Of Florida, Inc. | Overfill sensing system |
EP0340309A4 (en) * | 1987-10-02 | 1992-01-08 | Matsushita Electric Industrial Co., Ltd. | Heat-sensitive fuel quantity detector |
US5097248A (en) * | 1989-02-10 | 1992-03-17 | Murata Manufacturing Co., Ltd. | Electrode for level detection |
US5008653A (en) * | 1989-12-22 | 1991-04-16 | Emhart Industries, Inc. | Fluid detector with overfill probe |
-
1992
- 1992-05-22 US US07/888,339 patent/US5197329A/en not_active Expired - Lifetime
-
1993
- 1993-02-10 FR FR9301461A patent/FR2691536B1/fr not_active Expired - Fee Related
- 1993-03-26 IT IT93PN000017A patent/IT1268513B1/it active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
FR2691536A1 (fr) | 1993-11-26 |
ITPN930017A1 (it) | 1994-09-26 |
US5197329A (en) | 1993-03-30 |
IT1268513B1 (it) | 1997-03-04 |
ITPN930017A0 (it) | 1993-03-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20081031 |