AU598693B2 - Liquid level sensing apparatus - Google Patents

Liquid level sensing apparatus Download PDF

Info

Publication number
AU598693B2
AU598693B2 AU21326/88A AU2132688A AU598693B2 AU 598693 B2 AU598693 B2 AU 598693B2 AU 21326/88 A AU21326/88 A AU 21326/88A AU 2132688 A AU2132688 A AU 2132688A AU 598693 B2 AU598693 B2 AU 598693B2
Authority
AU
Australia
Prior art keywords
output
frequency
oscillator means
control signal
oscillator
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.)
Ceased
Application number
AU21326/88A
Other languages
English (en)
Other versions
AU2132688A (en
Inventor
Donald Paul II Labriola
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.)
Beckman Coulter Inc
Original Assignee
Beckman Instruments 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 Beckman Instruments Inc filed Critical Beckman Instruments Inc
Publication of AU2132688A publication Critical patent/AU2132688A/en
Application granted granted Critical
Publication of AU598693B2 publication Critical patent/AU598693B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Collation Of Sheets And Webs (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Level Indicators Using A Float (AREA)
AU21326/88A 1987-06-26 1988-06-09 Liquid level sensing apparatus Ceased AU598693B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US067183 1987-06-26
US07/067,183 US4912976A (en) 1987-06-26 1987-06-26 Liquid level sensing apparatus
PCT/US1988/001987 WO1988010412A1 (en) 1987-06-26 1988-06-09 Liquid level sensing apparatus

Publications (2)

Publication Number Publication Date
AU2132688A AU2132688A (en) 1989-01-19
AU598693B2 true AU598693B2 (en) 1990-06-28

Family

ID=22074259

Family Applications (1)

Application Number Title Priority Date Filing Date
AU21326/88A Ceased AU598693B2 (en) 1987-06-26 1988-06-09 Liquid level sensing apparatus

Country Status (7)

Country Link
US (1) US4912976A (enExample)
EP (1) EP0319573B1 (enExample)
JP (1) JPH0641140Y2 (enExample)
AU (1) AU598693B2 (enExample)
DE (1) DE3871738T2 (enExample)
ES (1) ES2009298A6 (enExample)
WO (1) WO1988010412A1 (enExample)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
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
WO1992022801A1 (en) * 1991-06-13 1992-12-23 Abbott Laboratories Automated specimen analyzing apparatus and method
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
AU670449B2 (en) * 1992-06-08 1996-07-18 Behring Diagnostics Inc. 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
CA2166804A1 (en) * 1993-07-09 1995-01-19 B. Edward Ramey 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
DE69525570T2 (de) * 1994-07-28 2002-08-22 Hitachi, Ltd. Probensammler für flüssige Proben
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
DE69835795T2 (de) 1997-11-19 2007-09-13 Grifols, S.A. Vorrichtung zur automatischen Durchführung von Laboratoriumprüfungen
ES2132034B1 (es) * 1997-11-19 2000-03-01 Grifols Grupo Sa Dispositivo para la manipulacion y deteccion de nivel de liquidos.
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
CA2342023C (en) * 2000-04-10 2007-07-03 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.
CN103675303B (zh) 2010-07-23 2016-02-03 贝克曼考尔特公司 传感器系统
US9907908B2 (en) 2011-03-08 2018-03-06 Baxter International Inc. Non-invasive radio frequency medical fluid level and volume detection system and method
US20120291811A1 (en) * 2011-05-20 2012-11-22 Dabney James H 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
EP3593097B1 (en) * 2017-03-09 2022-10-19 King Abdullah University Of Science And Technology Fluid characteristic sensor system and method
US11069678B2 (en) * 2017-08-29 2021-07-20 Qorvo Us, Inc. Logic gate cell structure
CN114532700A (zh) * 2018-06-22 2022-05-27 必胜公司 表面清洁装置
WO2023288032A1 (en) 2021-07-15 2023-01-19 Beckman Coulter, Inc. Fluid handling systems with function checks
CN113959523B (zh) * 2021-09-22 2024-12-13 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58180916A (ja) * 1982-04-16 1983-10-22 Nippon Soken Inc 液レベル検出装置
AU571446B2 (en) * 1982-08-25 1988-04-21 Venture Measurement Company Llc Self calibrating capacitance level sensor

Family Cites Families (35)

* Cited by examiner, † Cited by third party
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 (enExample) * 1968-01-24 1969-05-23
SE378452B (enExample) * 1969-06-11 1975-09-01 Thomas Electronics Ltd
GB1287148A (en) * 1969-06-11 1972-08-31 Thomas Electronics Ltd Improvements in or relating to water level detectors
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 (enExample) * 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 (enExample) * 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
US4543823A (en) * 1982-04-28 1985-10-01 General Motors Corporation Microwave probe for detecting oil level
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58180916A (ja) * 1982-04-16 1983-10-22 Nippon Soken Inc 液レベル検出装置
AU571446B2 (en) * 1982-08-25 1988-04-21 Venture Measurement Company Llc Self calibrating capacitance level sensor

Also Published As

Publication number Publication date
JPH02500020U (enExample) 1990-04-26
US4912976A (en) 1990-04-03
EP0319573A1 (en) 1989-06-14
DE3871738T2 (de) 1992-12-10
WO1988010412A1 (en) 1988-12-29
DE3871738D1 (de) 1992-07-09
EP0319573B1 (en) 1992-06-03
JPH0641140Y2 (ja) 1994-10-26
ES2009298A6 (es) 1989-09-16
AU2132688A (en) 1989-01-19

Similar Documents

Publication Publication Date Title
AU598693B2 (en) Liquid level sensing apparatus
US4977786A (en) Capacitive liquid level sensor
US4736638A (en) Liquid level sensor
US5083470A (en) Capacitive liquid level sensor
DE69432501T2 (de) Flüssigkeitsstand-Tastsonde und Steuerschaltung
JPS5610792A (en) Method and circuit for driving ultrasonic-wave converter
EP0030997A2 (en) Digital position sensor
EP0540733A4 (en) Portable dedicated electron spin resonance spectrometer
JPH02132362A (ja) 液体の特徴を測定するための装置および方法
Jensen et al. Measuring ionospheric electron density using the plasma frequency probe
US5150062A (en) Electrostatic capacitance sensing circuit
JPH01161118A (ja) 溶融金属浴内のスラグ界面レベルの検出装置
GB793953A (en) Improvements in or relating to apparatus for measuring and detecting the level of electricity-conducting material
JP3443010B2 (ja) 共振器及び電子スピン共鳴測定装置
DE19504579A1 (de) Apparatur zur Detektion von Flüssigkeitsoberflächen
Smith et al. An improved super-regenerative spectrometer for nuclear quadrupole resonance spectroscopy
Slavin A MOSFET oscillator suitable for measurements of small changes in capacitance or inductance at cryogenic temperatures
US3731192A (en) Method and apparatus for analyzing semiconductors
US3586966A (en) Apparatus and methods for electrodeless measurement of resistivity and proximity of materials
AU2023202502B2 (en) Liquid level detection based on tunable inductive-capacitive tank circuit
Spiwak Design and construction of a direct-plotting capacitance inverse-doping profiler for semiconductor evaluation
JPS56110331A (en) Automatic tracking compensation circuit for electronic tuner
Keene et al. Noise performance of a composite HTC/niobium SQUID in RF and DC bias modes
SU1044962A1 (ru) Способ измерени толщины провод щего сло издели
SU1071988A1 (ru) Металлоискатель

Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired