DE69004022T2 - Ultraschall-Flüssigkeitspegelsensor. - Google Patents
Ultraschall-Flüssigkeitspegelsensor.Info
- Publication number
- DE69004022T2 DE69004022T2 DE90307443T DE69004022T DE69004022T2 DE 69004022 T2 DE69004022 T2 DE 69004022T2 DE 90307443 T DE90307443 T DE 90307443T DE 69004022 T DE69004022 T DE 69004022T DE 69004022 T2 DE69004022 T2 DE 69004022T2
- Authority
- DE
- Germany
- Prior art keywords
- liquid level
- level sensor
- ultrasonic liquid
- ultrasonic
- sensor
- 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
- 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
-
- 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
- G01F23/296—Acoustic waves
- G01F23/2965—Measuring attenuation of transmitted waves
-
- 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
- G01F23/296—Acoustic waves
- G01F23/2961—Acoustic waves for discrete levels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S367/00—Communications, electrical: acoustic wave systems and devices
- Y10S367/908—Material level detection, e.g. liquid level
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/381,899 US4964090A (en) | 1989-07-19 | 1989-07-19 | Ultrasonic fluid level sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69004022D1 DE69004022D1 (de) | 1993-11-25 |
DE69004022T2 true DE69004022T2 (de) | 1994-02-17 |
Family
ID=23506800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE90307443T Expired - Fee Related DE69004022T2 (de) | 1989-07-19 | 1990-07-09 | Ultraschall-Flüssigkeitspegelsensor. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4964090A (de) |
EP (1) | EP0409458B1 (de) |
JP (1) | JPH0674996B2 (de) |
KR (1) | KR940000142B1 (de) |
DE (1) | DE69004022T2 (de) |
ES (1) | ES2047266T3 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5267474A (en) * | 1992-10-23 | 1993-12-07 | Kohler Co. | Liquid-level sensor |
US5428984A (en) * | 1993-08-30 | 1995-07-04 | Kay-Ray/Sensall, Inc. | Self test apparatus for ultrasonic sensor |
US5438230A (en) * | 1994-02-28 | 1995-08-01 | Motorola, Inc. | Piezoelectric material detector |
US5678114A (en) * | 1994-06-14 | 1997-10-14 | Noritsu Koki Co., Ltd. | Automatic photographic developing apparatus for photosensitive materials |
US5750881A (en) * | 1995-07-13 | 1998-05-12 | Chiron Diagnostics Corporation | Method and apparatus for aspirating and dispensing sample fluids |
US6158269A (en) * | 1995-07-13 | 2000-12-12 | Bayer Corporation | Method and apparatus for aspirating and dispensing sample fluids |
AU2143200A (en) | 1998-10-23 | 2000-05-15 | Royse Manufacturing Co. | Web coating material supply apparatus and method for a printing system |
JP2000283825A (ja) * | 1999-03-31 | 2000-10-13 | Fuji Photo Film Co Ltd | 液面検出装置 |
KR100428897B1 (ko) * | 1999-12-23 | 2004-04-28 | 주식회사 포스코 | 분리형 증폭기집을 구비한 초음파 유량측정기구 |
US6456064B1 (en) * | 2000-10-27 | 2002-09-24 | Promag, Ltd. | Piezo electric actuator housing in a magnetostrictive device |
US8959998B2 (en) * | 2013-05-15 | 2015-02-24 | Air Products And Chemicals, Inc. | Ultrasonic liquid level sensing systems |
US9389114B2 (en) | 2013-06-26 | 2016-07-12 | Gilbert J. Rietsch, Jr. | Car wash chemical solution level monitoring system |
DE102013219635B4 (de) * | 2013-09-27 | 2022-04-14 | Vitesco Technologies GmbH | Einrichtung zur Einführung einer gefrierfähigen Flüssigkeit in das Abgassystem eines Kraftfahrzeuges |
US9494458B2 (en) | 2014-01-03 | 2016-11-15 | Toyota Motor Engineering & Manufacturing North America, Inc. | Fluid level measurement probe |
DE102014113470A1 (de) * | 2014-09-18 | 2016-03-24 | Maschinenfabrik Reinhausen Gmbh | Elektrogerät mit einem mit Isolieröl gefüllten Gehäuse sowie Messgerät und Verfahren zum Überwachen eines solchen Elektrogeräts |
US9458759B2 (en) | 2014-12-26 | 2016-10-04 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
US9719409B2 (en) | 2014-12-26 | 2017-08-01 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
US9726069B2 (en) | 2014-12-26 | 2017-08-08 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
US10513967B2 (en) | 2014-12-26 | 2019-12-24 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
US10365146B2 (en) | 2014-12-26 | 2019-07-30 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
JP2021057751A (ja) * | 2019-09-30 | 2021-04-08 | セイコーエプソン株式会社 | 超音波装置、及び超音波装置の製造方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1406146A (en) * | 1973-05-21 | 1975-09-17 | Mullard Ltd | Level sensor |
DE2631061A1 (de) * | 1975-07-11 | 1977-01-27 | Mallory & Co Inc P R | Anordnung zur feststellung eines fluessigkeitspegels |
US4063457A (en) * | 1976-09-27 | 1977-12-20 | Envirotech Corporation | Ultrasonic level sensing device |
JPS5910871Y2 (ja) * | 1978-09-22 | 1984-04-04 | 株式会社トキメック | 超音波プロ−ブ |
US4316183A (en) * | 1980-10-24 | 1982-02-16 | Bestobell Mobrey Limited | Liquid level sensor |
DE3215040C2 (de) * | 1982-04-22 | 1985-11-07 | VEGA Grieshaber -GmbH & Co, 7622 Schiltach | Resonanzstab |
US4432231A (en) * | 1982-06-28 | 1984-02-21 | Baxter Travenol Laboratories, Inc. | Ultrasonic level detector |
DK148428C (da) * | 1983-02-03 | 1985-11-25 | Grundfos As | Niveaudetektor med et piezoelektrisk krystal |
US4679430A (en) * | 1983-03-30 | 1987-07-14 | United Kingdom Atomic Energy Authority | Ultrasonic liquid interface detector |
US4570483A (en) * | 1983-07-26 | 1986-02-18 | Ngk Spark Plug Co., Ltd. | Piezo-electric level sensor for internal combustion engine |
DE3336991A1 (de) * | 1983-10-11 | 1985-05-02 | Endress U. Hauser Gmbh U. Co, 7867 Maulburg | Vorrichtung zur feststellung und/oder ueberwachung eines vorbestimmten fuellstands in einem behaelter |
JPS617422A (ja) * | 1984-06-20 | 1986-01-14 | Ngk Spark Plug Co Ltd | 液面レベル検出方法 |
IT8453987V0 (it) * | 1984-10-31 | 1984-10-31 | Hospal Dasco Spa | Dispositivo rivelatore della presenza di fluido in corrispondenza di un prefissato livello di un contenitore di liquido |
US4703652A (en) * | 1984-12-01 | 1987-11-03 | Ngk Spark Plug Co., Ltd. | Piezoelectric type liquid level sensor and fabricating method thereof |
US4750117A (en) * | 1984-12-13 | 1988-06-07 | Surface Systems, Inc. | Ultrasonic depth measurement apparatus and methods |
JPS61218937A (ja) * | 1985-03-26 | 1986-09-29 | Komatsu Ltd | 超音波センサ−における接触媒質 |
DE3825047A1 (de) * | 1987-10-19 | 1989-04-27 | Siemens Ag | Sensor zur erfassung des fluessigkeitsstandes in einem behaelter |
-
1989
- 1989-07-19 US US07/381,899 patent/US4964090A/en not_active Expired - Fee Related
-
1990
- 1990-07-09 ES ES90307443T patent/ES2047266T3/es not_active Expired - Lifetime
- 1990-07-09 DE DE90307443T patent/DE69004022T2/de not_active Expired - Fee Related
- 1990-07-09 EP EP90307443A patent/EP0409458B1/de not_active Expired - Lifetime
- 1990-07-18 JP JP2190364A patent/JPH0674996B2/ja not_active Expired - Lifetime
- 1990-07-18 KR KR1019900010845A patent/KR940000142B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0409458B1 (de) | 1993-10-20 |
US4964090A (en) | 1990-10-16 |
KR940000142B1 (ko) | 1994-01-07 |
KR910003363A (ko) | 1991-02-27 |
JPH0674996B2 (ja) | 1994-09-21 |
DE69004022D1 (de) | 1993-11-25 |
JPH03135735A (ja) | 1991-06-10 |
ES2047266T3 (es) | 1994-02-16 |
EP0409458A1 (de) | 1991-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |