ES2009298A6 - Aparato de deeccion de nivel de liquido. - Google Patents
Aparato de deeccion de nivel de liquido.Info
- Publication number
- ES2009298A6 ES2009298A6 ES8801991A ES8801991A ES2009298A6 ES 2009298 A6 ES2009298 A6 ES 2009298A6 ES 8801991 A ES8801991 A ES 8801991A ES 8801991 A ES8801991 A ES 8801991A ES 2009298 A6 ES2009298 A6 ES 2009298A6
- Authority
- ES
- Spain
- Prior art keywords
- frequency
- output
- phase detector
- probe
- voltage
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
-
- 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
- G01F23/26—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
-
- 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
- G01F23/26—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/266—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N2035/1025—Fluid level sensing
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
APARATO DE DETECCION DE NIVEL DE LIQUIDO. SE DESCRIBE UN SISTEMA DE DETECCION DE NIVEL DE LIQUIDO QUE INCLUYE UNA SONDA Y UN ELEMENTO REACTIVO SOPORTADO POR LA SONDA. EL ELEMENTO REACTIVO FORMA PARTE DE UN CIRCUITO SINTONIZADO DE UN OSCILADOR CONTROLADO POR TENSION. LA SALIDA DEL OSCILADOR CONTROLADO POR TENSION SE COMPARA CON UNA SEÑAL DE REFERENCIA DE FRECUENCIA FIJA, Y UN DETECTOR DE FRECUENCIA/FASE GENERA UNA SEÑAL INDICATIVA DE UNA DIFERENCIA CUALQUIERA. LA SALIDA DEL DETECTOR DE FRECUENCIA/FASE SE APLICA AL OSCILADOR CONTROLADO POR TENSION PARA MANTENER LA FRECUENCIA DE SALIDA DEL OSCILADOR IGUAL A LA FRECUENCIA DE LA SEÑAL DE REFERENCIA. LA SALIDA DEL DETECTOR DE FRECUENCIA/FASE SE DIFERENCIA IGUALMENTE PARA GENERAR UN IMPULSO CUANDO LA SEÑAL DE SALIDA DEL DETECTOR DE FRECUENCIA/FASE VARIA RAPIDAMENTE, LO QUE INDICA EL CONTACTO INICIAL ENTRE LA SONDA Y LA SUPERFICIE DE UN LIQUIDO CONTENIDO EN UN RECIPIENTE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/067,183 US4912976A (en) | 1987-06-26 | 1987-06-26 | Liquid level sensing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2009298A6 true ES2009298A6 (es) | 1989-09-16 |
Family
ID=22074259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8801991A Expired ES2009298A6 (es) | 1987-06-26 | 1988-06-24 | Aparato de deeccion de nivel de liquido. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4912976A (es) |
EP (1) | EP0319573B1 (es) |
JP (1) | JPH0641140Y2 (es) |
AU (1) | AU598693B2 (es) |
DE (1) | DE3871738T2 (es) |
ES (1) | ES2009298A6 (es) |
WO (1) | WO1988010412A1 (es) |
Families Citing this family (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5083470A (en) * | 1990-01-18 | 1992-01-28 | E. I. Du Pont De Nemours And Company | Capacitive liquid level sensor |
US5159962A (en) * | 1991-04-05 | 1992-11-03 | Harcros Pigments, Inc. | Container filling machine, particularly for concentrated liquid pigment |
JPH04319624A (ja) * | 1991-04-18 | 1992-11-10 | Olympus Optical Co Ltd | 液面検知装置 |
EP0588972A4 (en) * | 1991-06-13 | 1994-09-14 | Abbott Lab | Optical imaging for positioning and cell counting |
JPH0697246B2 (ja) * | 1991-07-25 | 1994-11-30 | 株式会社ジャルコ | Pll回路を用いた浮遊容量の変化検出方法 |
DE4203638A1 (de) * | 1992-02-08 | 1993-08-12 | Boehringer Mannheim Gmbh | Fluessigkeitstransfereinrichtung fuer ein analysegeraet |
CA2136630A1 (en) * | 1992-06-08 | 1993-12-23 | John E. Waylet, Jr. | Liquid dispensing system |
US5365783A (en) * | 1993-04-30 | 1994-11-22 | Packard Instrument Company, Inc. | Capacitive sensing system and technique |
US5493922A (en) * | 1993-07-09 | 1996-02-27 | Akzo N.V. | Liquid level sensing probe and control circuit |
AU674435B2 (en) * | 1993-07-09 | 1996-12-19 | Akzo Nobel N.V. | Memory control device for an assay apparatus |
US5416448A (en) * | 1993-08-18 | 1995-05-16 | Sandia Corporation | Oscillator circuit for use with high loss quartz resonator sensors |
US5602333A (en) * | 1994-06-17 | 1997-02-11 | Smiths Industries | Apparatus for measuring the level of a liquid in a tank |
EP0694784B1 (en) * | 1994-07-28 | 2002-02-27 | Hitachi, Ltd. | Liquid sampling apparatus |
NL9500217A (nl) * | 1995-02-06 | 1996-09-02 | Meridian Instr Bv | Capacitieve meetinrichting. |
US6378435B1 (en) * | 1995-04-03 | 2002-04-30 | General Dynamics Decision Systems, Inc. | Variable target transition detection capability and method therefor |
US5623252A (en) * | 1995-05-22 | 1997-04-22 | Cacciola; John A. | Liquid level detector using audio frequencies |
US5641006A (en) * | 1995-07-13 | 1997-06-24 | Chiron Diagnostics Corporation | Liquid supply apparatus and method of operation |
US6158269A (en) * | 1995-07-13 | 2000-12-12 | Bayer Corporation | Method and apparatus for aspirating and dispensing sample fluids |
US5750881A (en) * | 1995-07-13 | 1998-05-12 | Chiron Diagnostics Corporation | Method and apparatus for aspirating and dispensing sample fluids |
US5866426A (en) * | 1996-12-17 | 1999-02-02 | Akzo Nobel N.V. | Device and method for determining liquid-probe contact |
ES2132034B1 (es) * | 1997-11-19 | 2000-03-01 | Grifols Grupo Sa | Dispositivo para la manipulacion y deteccion de nivel de liquidos. |
AR017411A1 (es) | 1997-11-19 | 2001-09-05 | Grifols Sa | Aparato para la realizacion automatica de pruebas de laboratorio |
DE19919305A1 (de) | 1999-04-28 | 2000-11-02 | Roche Diagnostics Gmbh | Verfahren und Vorrichtung zum Flüssigkeitstransfer mit einem Analysegerät |
JP4497637B2 (ja) * | 1999-11-01 | 2010-07-07 | 株式会社ノーケン | 静電容量式検知装置 |
US7241630B2 (en) * | 2000-04-10 | 2007-07-10 | Randox Laboratories, Ltd. | Paramagnetic particle detection |
US6581461B1 (en) | 2000-05-25 | 2003-06-24 | Trn Business Trust | Electro-optic sensor for levelmeter providing output signal with frequency modulated by surface level |
US6762679B1 (en) | 2000-11-06 | 2004-07-13 | Trn Business Trust | Remote monitoring adapter for levelmeter |
US20020106308A1 (en) * | 2001-02-02 | 2002-08-08 | Zweifel Ronald A. | Microdrop dispensing apparatus |
US6606906B2 (en) | 2001-09-06 | 2003-08-19 | Trn Business Trust | Digital conversion adapter for magnetically coupled level meters |
US6736006B2 (en) | 2001-12-31 | 2004-05-18 | Trn Business Trust | Level detector for a material in a container |
FR2838824B1 (fr) * | 2002-04-19 | 2005-02-04 | Sogem Fl | Procede et dispositif pour reguler automatiquement une quantite de produit deposee de maniere repetitive par un actionneur de depose, et l'installation de depose equipee d'un tel dispositif |
US6938478B2 (en) | 2002-11-14 | 2005-09-06 | Herman Diaz Arias | Impedance level meter for liquids in tanks |
US20040093939A1 (en) * | 2002-11-14 | 2004-05-20 | Arias Herman Diaz | Non-contact level detector for fluids in a container |
US7191647B2 (en) * | 2003-10-30 | 2007-03-20 | Perkinelmer Las, Inc. | Method and apparatus to reject electrical interference in a capacitive liquid level sensor system |
US8602744B2 (en) * | 2005-03-25 | 2013-12-10 | Diversitech Corporation | Condensate pump |
US8651824B2 (en) * | 2005-03-25 | 2014-02-18 | Diversitech Corporation | Condensate pump |
US7814788B2 (en) * | 2006-10-20 | 2010-10-19 | Abbott Laboratories, Inc. | Liquid level sensor |
CN101858770B (zh) * | 2009-04-09 | 2013-04-24 | 深圳迈瑞生物医疗电子股份有限公司 | 液面检测装置及加样系统 |
US8225654B2 (en) * | 2009-07-01 | 2012-07-24 | Tecan Trading Ag | Self-compensating capacitive liquid level detector |
CH702180B1 (de) * | 2009-11-02 | 2015-02-13 | Tecan Trading Ag | Verfahren zum Testen eines Laborgeräts und entsprechendes Laborgerät. |
EP2752668A3 (en) | 2010-07-23 | 2014-10-15 | Beckman Coulter, Inc. | System Or Method Of Including Analytical Units |
US8869612B2 (en) | 2011-03-08 | 2014-10-28 | Baxter International Inc. | Non-invasive radio frequency liquid level and volume detection system using phase shift |
WO2012162230A1 (en) * | 2011-05-20 | 2012-11-29 | Impulse Biomedical, Inc. | Feeding tube cleaning devices and methods |
US9529009B2 (en) | 2011-06-06 | 2016-12-27 | Hitachi High-Technologies Corporation | Automatic analyzer |
US9261395B2 (en) | 2012-02-13 | 2016-02-16 | Goodrich Corporation | Liquid level sensing system |
US9574928B2 (en) | 2012-02-13 | 2017-02-21 | Goodrich Corporation | Liquid level sensing systems |
JP2015087329A (ja) * | 2013-10-31 | 2015-05-07 | シスメックス株式会社 | 吸引部の位置調整方法及び検体処理装置 |
WO2017223214A1 (en) * | 2016-06-22 | 2017-12-28 | Abbott Laboratories | Liquid level sensing apparatus and related methods |
WO2018162968A1 (en) * | 2017-03-09 | 2018-09-13 | King Abdullah University Of Science And Technology | Fluid characteristic sensor, sensor system, and method |
US11069678B2 (en) * | 2017-08-29 | 2021-07-20 | Qorvo Us, Inc. | Logic gate cell structure |
KR20210016050A (ko) | 2018-06-22 | 2021-02-10 | 비쎌 인코포레이티드 | 표면을 청소하기 위한 장치 |
US20240329067A1 (en) | 2021-07-15 | 2024-10-03 | Beckman Coulter, Inc. | Fluid handling systems with function checks |
CN113959523A (zh) * | 2021-09-22 | 2022-01-21 | 青岛海尔生物医疗科技有限公司 | 用于培养设备的液位检测装置及方法、培养设备及介质 |
EP4430409A1 (en) | 2021-11-09 | 2024-09-18 | Beckman Coulter, Inc. | Automated pipette tip organizing for fluid handling systems |
US11988540B2 (en) * | 2022-08-15 | 2024-05-21 | Instrumentation Laboratory Co. | Liquid level detection based on tunable inductive-capacitive tank circuit |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB663643A (en) * | 1947-11-01 | 1951-12-27 | George Henry Ennis | Improved system for regulating the quantity of liquid in a container |
US2657579A (en) * | 1952-02-04 | 1953-11-03 | Smith & Sons Ltd S | Liquid level indicating device |
US2792566A (en) * | 1953-12-11 | 1957-05-14 | William M Shanhouse | Liquid level detector |
US3277711A (en) * | 1963-05-24 | 1966-10-11 | Rowell A Roberge | Electronic liquid level indicator |
US3321971A (en) * | 1964-05-27 | 1967-05-30 | Varian Associates | Level indicating apparatus |
FR1568072A (es) * | 1968-01-24 | 1969-05-23 | ||
GB1287148A (en) * | 1969-06-11 | 1972-08-31 | Thomas Electronics Ltd | Improvements in or relating to water level detectors |
US3694804A (en) * | 1969-06-11 | 1972-09-26 | Thomas Electronics Ltd | Coolant level detector for engine cooling system |
US3687632A (en) * | 1969-07-30 | 1972-08-29 | Rohe Scientific Corp | System for transferring liquids between containers |
DE2041678A1 (de) * | 1969-09-06 | 1971-03-11 | Greiner Electronic Ag | Verfahren zum Betrieb einer Transferpipette |
US3641544A (en) * | 1970-06-22 | 1972-02-08 | Ford Motor Co | Low-liquid level indicator |
US3821900A (en) * | 1970-07-13 | 1974-07-02 | F Preikschat | Proportional bin level sensor |
US3662333A (en) * | 1970-09-08 | 1972-05-09 | Bendix Corp | Hydraulic accumulator charge detector and indicating system |
DE2055590A1 (de) * | 1970-11-12 | 1972-05-18 | Krauss Maffei Ag | Anordnung zum Anzeigen des Füllstandes in Behältern, insbesondere des Kühlwasserstandes bei Diesellokomotiven |
US3807231A (en) * | 1971-07-01 | 1974-04-30 | R Spaw | Automatic level measuring and control system |
US3793585A (en) * | 1972-02-02 | 1974-02-19 | M Wilska | Moisture monitor having a resistor between sensing capacitor and oscillator tuned input to improve oscillator response |
FR2208121B1 (es) * | 1972-11-29 | 1978-12-29 | Commissariat Energie Atomique | |
US4165641A (en) * | 1974-06-17 | 1979-08-28 | P. R. Mallory & Co. Inc. | Liquid level sensing means |
NL7413475A (nl) * | 1974-10-14 | 1976-04-20 | Mattheus Gijsbertus Jozef Arts | Niveauregeling. |
US4182176A (en) * | 1976-06-24 | 1980-01-08 | Westinghouse Electric Corporation | Liquid level sensor with improved linearity |
US4099167A (en) * | 1977-02-10 | 1978-07-04 | P.R. Mallory & Co. Inc. | Capacitive means for measuring the level of a liquid |
FR2386811A1 (fr) * | 1977-04-06 | 1978-11-03 | Elf Aquitaine | Detecteur de niveau de separation entre deux liquides |
US4170135A (en) * | 1978-09-26 | 1979-10-09 | The United States Of America As Represented By The United States Department Of Energy | Coaxial cavity for measuring level of liquid in a container |
US4389900A (en) * | 1979-06-14 | 1983-06-28 | The United States Of America As Represented By The Secretary Of The Interior | Capacitance probe sensor device |
US4276258A (en) * | 1980-01-28 | 1981-06-30 | Coulter Electronics, Inc. | Sample and stat feeding system and sample tray |
US4326851A (en) * | 1980-10-24 | 1982-04-27 | Coulter Electronics, Inc. | Level sensor apparatus and method |
JPH04279Y2 (es) * | 1981-05-21 | 1992-01-07 | ||
DE3128507C2 (de) * | 1981-07-18 | 1986-02-06 | Olaf A. 3504 Kaufungen Richter | Einrichtung zum Überwachen der Länge einer Flüssigkeitssäule |
US4482891A (en) * | 1981-09-21 | 1984-11-13 | Spencer John D | Robust electronic liquid level gauge |
JPS58180916A (ja) * | 1982-04-16 | 1983-10-22 | Nippon Soken Inc | 液レベル検出装置 |
US4543823A (en) * | 1982-04-28 | 1985-10-01 | General Motors Corporation | Microwave probe for detecting oil level |
AU571446B2 (en) * | 1982-08-25 | 1988-04-21 | Venture Measurement Company Llc | Self calibrating capacitance level sensor |
US4495807A (en) * | 1983-02-24 | 1985-01-29 | The United States Of America As Represented By The United States Department Of Energy | Precision liquid level sensor |
DE3323748A1 (de) * | 1983-07-01 | 1985-01-03 | Norddeutsche Affinerie AG, 2000 Hamburg | Verfahren zur messung und regelung des fuellstandes von in einem behaelter befindlichen stoffen |
JPS6057217A (ja) * | 1983-09-09 | 1985-04-03 | Nippon Kokan Kk <Nkk> | 渦流式モ−ルド湯面計 |
US4638305A (en) * | 1985-03-22 | 1987-01-20 | General Motors Corporation | Apparatus for detecting water in fuel |
US4736638A (en) * | 1985-12-20 | 1988-04-12 | Beckman Instruments, Inc. | Liquid level sensor |
-
1987
- 1987-06-26 US US07/067,183 patent/US4912976A/en not_active Expired - Lifetime
-
1988
- 1988-06-09 DE DE8888906582T patent/DE3871738T2/de not_active Expired - Lifetime
- 1988-06-09 AU AU21326/88A patent/AU598693B2/en not_active Ceased
- 1988-06-09 EP EP88906582A patent/EP0319573B1/en not_active Expired
- 1988-06-09 WO PCT/US1988/001987 patent/WO1988010412A1/en active IP Right Grant
- 1988-06-09 JP JP1989600010U patent/JPH0641140Y2/ja not_active Expired - Lifetime
- 1988-06-24 ES ES8801991A patent/ES2009298A6/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU598693B2 (en) | 1990-06-28 |
DE3871738D1 (de) | 1992-07-09 |
JPH02500020U (es) | 1990-04-26 |
WO1988010412A1 (en) | 1988-12-29 |
US4912976A (en) | 1990-04-03 |
EP0319573A1 (en) | 1989-06-14 |
JPH0641140Y2 (ja) | 1994-10-26 |
EP0319573B1 (en) | 1992-06-03 |
DE3871738T2 (de) | 1992-12-10 |
AU2132688A (en) | 1989-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2009298A6 (es) | Aparato de deeccion de nivel de liquido. | |
CA2007649A1 (en) | Capacitive liquid sensor | |
CA2126823A1 (en) | Liquid level sensing probe and control circuit | |
EP0234479A3 (en) | Radar tank gauge | |
DE3587441D1 (de) | Anordnung zur fahrzeug-geschwindigkeitsmessung ueber grund mit signalausfallkompensation. | |
SE8802579D0 (sv) | Apparatus and method of determining the mass of an article by measuring the shift in the period of harmonic motion | |
EP0233047A3 (en) | Solute concentration measurement apparatus | |
IT8124746A0 (it) | Apparecchio per la misura e l'indicazione del livello di fluidi in recipienti mediante rilevamento della frequenza di oscillazione della parete. | |
HK1009008A1 (en) | Interrogator for electronic identification system | |
JPS5639447A (en) | Device for measuring water content in sheet material | |
DE58907552D1 (de) | Schaltungsanordnung zum Bestimmen einer charakteristischen Grösse eines HF-Oszillators. | |
JPS566117A (en) | Liquid-level detector | |
YU36289A (en) | Device and process for measuring between phase liquid level | |
JPS54119953A (en) | Ultrasonic wave detection type kalman vortex flow meter | |
JPS57211024A (en) | Temperature measuring device | |
JPS5630674A (en) | Average time interval measuring circuit | |
JPS57211026A (en) | Temperature measuring device | |
JPS5315872A (en) | Dew detector | |
RU2101683C1 (ru) | Высокочастотный уровнемер | |
JPS5315873A (en) | Dew detector | |
JPS57119271A (en) | Decca receiving device | |
JPS5249541A (en) | Alarm or indication system for vehicles | |
EP0310783A3 (en) | Stabilisation method of the output frequency of a voltage-controlled oscillator, and oscillator and sensor device functioning in accordance with this method | |
JPS5315871A (en) | Dew datector | |
SU1407206A1 (ru) | Весоизмерительное устройство |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20040503 |