ZA944646B - Liquid level sensing probe and control circuit - Google Patents
Liquid level sensing probe and control circuitInfo
- Publication number
- ZA944646B ZA944646B ZA944646A ZA944646A ZA944646B ZA 944646 B ZA944646 B ZA 944646B ZA 944646 A ZA944646 A ZA 944646A ZA 944646 A ZA944646 A ZA 944646A ZA 944646 B ZA944646 B ZA 944646B
- Authority
- ZA
- South Africa
- Prior art keywords
- control circuit
- liquid level
- sampling probe
- level sensing
- amplitude
- Prior art date
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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
-
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7287—Liquid level responsive or maintaining systems
- Y10T137/7306—Electrical characteristic sensing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Sampling And Sample Adjustment (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Level Indicators Using A Float (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Cookers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/088,656 US5493922A (en) | 1993-07-09 | 1993-07-09 | Liquid level sensing probe and control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA944646B true ZA944646B (en) | 1995-02-13 |
Family
ID=22212636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA944646A ZA944646B (en) | 1993-07-09 | 1994-06-28 | Liquid level sensing probe and control circuit |
Country Status (13)
Country | Link |
---|---|
US (1) | US5493922A (de) |
EP (1) | EP0633456B1 (de) |
JP (1) | JP3662951B2 (de) |
KR (1) | KR100434818B1 (de) |
AT (1) | ATE237795T1 (de) |
AU (1) | AU678248B2 (de) |
CA (1) | CA2126823C (de) |
DE (1) | DE69432501T2 (de) |
DK (1) | DK0633456T3 (de) |
ES (1) | ES2196017T3 (de) |
FI (1) | FI943270A (de) |
PT (1) | PT633456E (de) |
ZA (1) | ZA944646B (de) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5879628A (en) * | 1996-05-06 | 1999-03-09 | Helena Laboratories Corporation | Blood coagulation system having a bar code reader and a detecting means for detecting the presence of reagents in the cuvette |
JP3158054B2 (ja) * | 1996-07-19 | 2001-04-23 | 株式会社日立製作所 | 液体採取装置 |
US5866426A (en) * | 1996-12-17 | 1999-02-02 | Akzo Nobel N.V. | Device and method for determining liquid-probe contact |
US6024249A (en) * | 1997-06-27 | 2000-02-15 | Taiwan Semiconductor Manufacturing Company | Fluid delivery system using an optical sensor to monitor for gas bubbles |
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. |
US5992447A (en) * | 1998-09-04 | 1999-11-30 | Miller; Russell | Device for filling vinyl lined pools |
EP0990908A1 (de) * | 1998-09-30 | 2000-04-05 | F. Hoffmann-La Roche Ag | Analysenautomat mit Mitteln zur Überwachung von Pipettiervorgängen |
EP1261876B1 (de) | 2000-02-29 | 2015-09-09 | Gen-Probe Incorporated | Fluidabgabe- und flüssigkeitsoberflächenprüfungssystem |
US7241630B2 (en) * | 2000-04-10 | 2007-07-10 | Randox Laboratories, Ltd. | Paramagnetic particle detection |
US20040084065A1 (en) * | 2002-11-04 | 2004-05-06 | Edelmann David Charles | Systems and methods for controlling warewasher wash cycle duration, detecting water levels and priming warewasher chemical feed lines |
US7222526B2 (en) * | 2004-06-17 | 2007-05-29 | Ortho-Clinical Diagnostics, Inc | Liquid measurements using capacitive monitoring |
WO2006053086A2 (en) * | 2004-11-09 | 2006-05-18 | Perkinelmer Las, Inc. | Methods and systems for determining a position of a probe |
US7150190B2 (en) * | 2005-03-21 | 2006-12-19 | Dade Behring Inc. | Method and apparatus for capacitively determining the uppermost level of a liquid in a container |
US8296088B2 (en) | 2006-06-02 | 2012-10-23 | Luminex Corporation | Systems and methods for performing measurements of one or more materials |
KR100794125B1 (ko) * | 2006-07-27 | 2008-01-10 | 웅진코웨이주식회사 | 비접촉식 수위 제어 장치 |
US7814788B2 (en) | 2006-10-20 | 2010-10-19 | Abbott Laboratories, Inc. | Liquid level sensor |
EP1947463A1 (de) * | 2007-01-16 | 2008-07-23 | Roche Diagnostics GmbH | Entnahme von flüssigen Analyseproben zum Zweck der klinischen Analyse |
US7804599B2 (en) * | 2008-07-24 | 2010-09-28 | MGM Instruments, Inc. | Fluid volume verification system |
EP2370824A1 (de) * | 2008-11-28 | 2011-10-05 | Ametek, Inc. | Vorrichtung zur hochpräzisionsmessung von unterschiedlichen oberflächen- und materialebenen |
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 |
GB201015009D0 (en) | 2010-09-09 | 2010-10-20 | Randox Lab Ltd | Capacitive liquid level sensor |
ITMI20111313A1 (it) * | 2011-07-14 | 2013-01-15 | Carpigiani Group Ali Spa | Macchina per preparazione di gelato |
US9599501B2 (en) * | 2011-12-29 | 2017-03-21 | Abbott Laboratories | Devices and systems for liquid level detection in hematology instruments, and methods related thereto |
US9521941B2 (en) | 2012-08-21 | 2016-12-20 | Premark Feg L.L.C. | Warewash machine chemical sensor and related system and method |
JP6040733B2 (ja) * | 2012-11-27 | 2016-12-07 | 東ソー株式会社 | 検知機能を有した試料分注装置 |
US9939412B2 (en) | 2013-02-06 | 2018-04-10 | Empire Technology Development Llc | Devices, systems, and methods for detecting odorants |
EP3019838B1 (de) | 2013-07-12 | 2022-06-15 | Siemens Healthcare Diagnostics Inc. | Füllstandsdetektionssystem und -verfahren |
US20160097670A1 (en) * | 2014-10-01 | 2016-04-07 | Honeywell International Inc. | Resolution mode switching for pulsed radar |
CN104697605A (zh) * | 2015-03-19 | 2015-06-10 | 北京中航赛维生物科技有限公司 | 一种液面智能感应电路及其装置 |
CH711157A2 (de) * | 2015-06-02 | 2016-12-15 | Tecan Trading Ag | Verfahren zur Detektion einer Schaumgrenze und entsprechend ausgestattete Vorrichtung. |
CN106289448A (zh) * | 2015-06-11 | 2017-01-04 | 北京勤邦生物技术有限公司 | 一种液位检测预警装置 |
WO2017223214A1 (en) * | 2016-06-22 | 2017-12-28 | Abbott Laboratories | Liquid level sensing apparatus and related methods |
JP7053492B2 (ja) * | 2016-12-27 | 2022-04-12 | 株式会社日立ハイテク | ノズル洗浄器およびこれを用いた自動分析装置 |
CN108107929B (zh) * | 2018-02-06 | 2023-11-10 | 欣灵电气股份有限公司 | 液位控制器 |
JP2022142208A (ja) * | 2021-03-16 | 2022-09-30 | キヤノンメディカルシステムズ株式会社 | 自動分析装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4173893A (en) * | 1976-10-12 | 1979-11-13 | Hedrick Geoffrey S | Fluid quantity indicator |
US4169543A (en) * | 1977-10-20 | 1979-10-02 | Keystone International, Inc. | Amplitude responsive detector |
US4380091A (en) * | 1978-11-13 | 1983-04-19 | Lively Olin A | Control circuitry for water level control of pools |
US4559507A (en) * | 1983-09-01 | 1985-12-17 | Simmonds Precision Products, Inc. | Controlled hybrid microcircuit oscillator |
US4736638A (en) * | 1985-12-20 | 1988-04-12 | Beckman Instruments, Inc. | Liquid level sensor |
US4912976A (en) * | 1987-06-26 | 1990-04-03 | Beckman Instruments, Inc. | Liquid level sensing apparatus |
JP2582795B2 (ja) * | 1987-08-10 | 1997-02-19 | 株式会社東芝 | 液面検知装置 |
US4943353A (en) * | 1988-03-10 | 1990-07-24 | Pure Water, Inc. | Control for modular water distiller |
US5005407A (en) * | 1988-10-11 | 1991-04-09 | Level Electronics, Inc. | Fluid level sensing system |
US5083470A (en) * | 1990-01-18 | 1992-01-28 | E. I. Du Pont De Nemours And Company | Capacitive liquid level sensor |
US5216926A (en) * | 1990-04-18 | 1993-06-08 | E. I. Du Pont De Nemours And Company | Closed and open tube sampling apparatus |
US5130254A (en) * | 1990-05-25 | 1992-07-14 | E. I. Du Pont De Nemours And Company | Method for pipetting liquid from a sealed container |
US5178019A (en) * | 1991-03-26 | 1993-01-12 | Akzo N.V. | Heated liquid sampling probe for an automated sampling apparatus |
EP0588972A4 (en) * | 1991-06-13 | 1994-09-14 | Abbott Lab | Optical imaging for positioning and cell counting |
US5365783A (en) * | 1993-04-30 | 1994-11-22 | Packard Instrument Company, Inc. | Capacitive sensing system and technique |
-
1993
- 1993-07-09 US US08/088,656 patent/US5493922A/en not_active Expired - Fee Related
-
1994
- 1994-06-27 CA CA002126823A patent/CA2126823C/en not_active Expired - Fee Related
- 1994-06-28 ZA ZA944646A patent/ZA944646B/xx unknown
- 1994-07-05 DK DK94201933T patent/DK0633456T3/da active
- 1994-07-05 PT PT94201933T patent/PT633456E/pt unknown
- 1994-07-05 EP EP94201933A patent/EP0633456B1/de not_active Expired - Lifetime
- 1994-07-05 AT AT94201933T patent/ATE237795T1/de not_active IP Right Cessation
- 1994-07-05 DE DE69432501T patent/DE69432501T2/de not_active Expired - Fee Related
- 1994-07-05 ES ES94201933T patent/ES2196017T3/es not_active Expired - Lifetime
- 1994-07-08 FI FI943270A patent/FI943270A/fi not_active Application Discontinuation
- 1994-07-08 JP JP15750094A patent/JP3662951B2/ja not_active Expired - Fee Related
- 1994-07-08 AU AU67361/94A patent/AU678248B2/en not_active Ceased
- 1994-07-09 KR KR1019940016525A patent/KR100434818B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2126823C (en) | 2004-08-24 |
ATE237795T1 (de) | 2003-05-15 |
EP0633456A1 (de) | 1995-01-11 |
JPH07146166A (ja) | 1995-06-06 |
AU678248B2 (en) | 1997-05-22 |
ES2196017T3 (es) | 2003-12-16 |
PT633456E (pt) | 2003-09-30 |
DE69432501T2 (de) | 2004-01-08 |
US5493922A (en) | 1996-02-27 |
FI943270A0 (fi) | 1994-07-08 |
KR100434818B1 (ko) | 2004-10-20 |
JP3662951B2 (ja) | 2005-06-22 |
EP0633456B1 (de) | 2003-04-16 |
DK0633456T3 (da) | 2003-05-19 |
DE69432501D1 (de) | 2003-05-22 |
KR960014912A (ko) | 1996-05-22 |
AU6736194A (en) | 1995-01-19 |
CA2126823A1 (en) | 1995-01-10 |
FI943270A (fi) | 1995-01-10 |
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