WO2005045635A3 - Method and apparatus to reject electrical interference in a capacitive liquid level sensor system - Google Patents
Method and apparatus to reject electrical interference in a capacitive liquid level sensor system Download PDFInfo
- Publication number
- WO2005045635A3 WO2005045635A3 PCT/US2004/035979 US2004035979W WO2005045635A3 WO 2005045635 A3 WO2005045635 A3 WO 2005045635A3 US 2004035979 W US2004035979 W US 2004035979W WO 2005045635 A3 WO2005045635 A3 WO 2005045635A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- probe
- capacitance
- measuring
- liquid level
- level sensor
- Prior art date
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
- G01F23/26—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
-
- 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
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04796734.4A EP1690157B1 (en) | 2003-10-30 | 2004-10-29 | Method and apparatus to reject electrical interference in a capacitive liquid level sensor system |
CA2544434A CA2544434C (en) | 2003-10-30 | 2004-10-29 | Method and apparatus to reject electrical interference in a capacitive liquid level sensor system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48158103P | 2003-10-30 | 2003-10-30 | |
US60/481,581 | 2003-10-30 | ||
US10/975,658 US7191647B2 (en) | 2003-10-30 | 2004-10-28 | Method and apparatus to reject electrical interference in a capacitive liquid level sensor system |
US10/975,658 | 2004-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005045635A2 WO2005045635A2 (en) | 2005-05-19 |
WO2005045635A3 true WO2005045635A3 (en) | 2006-11-09 |
Family
ID=34555553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/035979 WO2005045635A2 (en) | 2003-10-30 | 2004-10-29 | Method and apparatus to reject electrical interference in a capacitive liquid level sensor system |
Country Status (4)
Country | Link |
---|---|
US (3) | US7191647B2 (en) |
EP (1) | EP1690157B1 (en) |
CA (1) | CA2544434C (en) |
WO (1) | WO2005045635A2 (en) |
Families Citing this family (34)
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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 |
US7472593B2 (en) * | 2005-12-01 | 2009-01-06 | Cytyc Corporation | Fluid level regulator |
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US7814788B2 (en) | 2006-10-20 | 2010-10-19 | Abbott Laboratories, Inc. | Liquid level sensor |
DE102006052833A1 (en) * | 2006-11-09 | 2008-05-15 | Diasys Diagnostic Systems Gmbh | A method for detecting a blockage, a coagulum or a plug at the receiving opening of a dispensing needle |
US7823447B2 (en) * | 2007-09-17 | 2010-11-02 | Perkinelmer Las, Inc. | Method and apparatus for sensing a liquid level |
US8726745B2 (en) * | 2007-11-26 | 2014-05-20 | Perkinelmer Health Sciences, Inc. | Fluid handling device with ultrasound sensor and methods and systems using same |
US8395395B2 (en) * | 2007-11-27 | 2013-03-12 | Azoteq (Pty) Ltd. | Noise rejection and parasitic capacitance removal implementations |
CN101858770B (en) * | 2009-04-09 | 2013-04-24 | 深圳迈瑞生物医疗电子股份有限公司 | Liquid level detection device and sample adding system |
US8225654B2 (en) * | 2009-07-01 | 2012-07-24 | Tecan Trading Ag | Self-compensating capacitive liquid level detector |
CH702180B1 (en) * | 2009-11-02 | 2015-02-13 | Tecan Trading Ag | Method for testing a laboratory device and corresponding laboratory device. |
US8365574B2 (en) * | 2009-12-07 | 2013-02-05 | Hamilton Sundstrand Corporation | Systems and methods for minimizing stray current in capacitive sensor data |
CH702430A2 (en) * | 2009-12-28 | 2011-06-30 | Blancpain Sa | Dynamometric device for indicating torque reserve of barrel of timepiece, has indicator member provided in vicinity of end of arm and allowing visualization of torque reserve of barrel in connection with graphic or graduated scale |
CH702427A1 (en) * | 2009-12-30 | 2011-06-30 | Tecan Trading Ag | Method and apparatus for detection of phase boundaries and accordingly equipped laboratory device. |
US8552316B2 (en) * | 2010-06-22 | 2013-10-08 | Infineon Technologies Ag | Sensor measurement system using pulsed current signals |
US8809069B2 (en) | 2011-05-20 | 2014-08-19 | Perkinelmer Health Sciences, Inc. | Lab members and liquid handling systems and methods including same |
CN103597359B (en) * | 2011-06-06 | 2016-01-20 | 株式会社日立高新技术 | Automatic analysing apparatus |
US9073052B2 (en) | 2012-03-30 | 2015-07-07 | Perkinelmer Health Sciences, Inc. | Lab members and liquid handling systems and methods including same |
EP2741087B1 (en) * | 2012-12-04 | 2019-10-02 | F. Hoffmann-La Roche AG | Method and system for fluid surface detection |
US10072927B2 (en) | 2016-01-07 | 2018-09-11 | Rarecyte, Inc. | Detecting a substrate |
US9347813B2 (en) * | 2014-01-28 | 2016-05-24 | Analog Devices GmbH | Capacitive sensing probe motion control system |
JP6280777B2 (en) * | 2014-03-24 | 2018-02-14 | シスメックス株式会社 | Analysis device and liquid level detection method in analysis device |
WO2016069018A1 (en) * | 2014-10-31 | 2016-05-06 | Hewlett Packard Enterprise Development Lp | Server device with capacitive circuit |
EP3112861B1 (en) * | 2015-07-03 | 2018-08-29 | Siemens Healthcare Diagnostics Products GmbH | Method for touch detection for a pipetting needle |
CN107709958B (en) * | 2015-07-14 | 2020-04-14 | 深圳迈瑞生物医疗电子股份有限公司 | Sampling mechanism, air suction detection method thereof and sample analyzer |
CN105222866A (en) * | 2015-09-14 | 2016-01-06 | 新乡市恒冠仪表有限公司 | A kind of condenser type intelligent boiler liquid level of steam drum meter |
CZ307641B6 (en) * | 2015-10-02 | 2019-01-30 | Biovendor Instruments A.S. | A multi-axis handling device intended for transmission of biological samples and the method of transferring biological samples by means of the multi-axis handling device |
US10379131B2 (en) | 2015-11-18 | 2019-08-13 | Elbit Systems Of America/Kmc Systems, Inc. | Systems and methods for detecting a liquid level |
TWI604182B (en) * | 2016-04-26 | 2017-11-01 | 諾貝爾生物有限公司 | Syringe assembly and method of using the same |
US11231309B2 (en) * | 2016-05-11 | 2022-01-25 | Siemens Healthcare Diagnostics Inc. | Quick connection for liquid level sense-enabled metering probe |
WO2017223214A1 (en) * | 2016-06-22 | 2017-12-28 | Abbott Laboratories | Liquid level sensing apparatus and related methods |
CH712735A1 (en) * | 2016-07-22 | 2018-01-31 | Tecan Trading Ag | Pipetting device with a liquid volume sensor and liquid processing system. |
CN110146141B (en) * | 2019-04-26 | 2020-06-05 | 浙江大学 | Liquid level detection device and method for improved sleeve type sampling needle |
CN111854888B (en) * | 2020-07-25 | 2021-07-02 | 珠海格力电器股份有限公司 | Water level detection method and device, storage medium and kettle |
Citations (6)
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US4326851A (en) * | 1980-10-24 | 1982-04-27 | Coulter Electronics, Inc. | Level sensor apparatus and method |
US4977786A (en) * | 1990-01-18 | 1990-12-18 | E. I. Du Pont De Nemours And Company | Capacitive liquid level sensor |
US5027075A (en) * | 1989-09-18 | 1991-06-25 | Nova Biomedical Corporation | Apparatus for determination of probe contact with a liquid surface |
US5365783A (en) * | 1993-04-30 | 1994-11-22 | Packard Instrument Company, Inc. | Capacitive sensing system and technique |
US5855851A (en) * | 1996-07-19 | 1999-01-05 | Hitachi, Ltd. | Apparatus for trasferring liquid having liquid level sensing function |
US6328934B1 (en) * | 1996-09-17 | 2001-12-11 | Pharmacia Ab | Device for detection of when a test probe gets into contact with a liquid surface |
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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 |
DE102005032131A1 (en) * | 2005-07-07 | 2007-01-18 | Endress + Hauser Gmbh + Co. Kg | Device for capacitive determination and / or monitoring of the filling level |
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-
2004
- 2004-10-28 US US10/975,658 patent/US7191647B2/en active Active
- 2004-10-29 CA CA2544434A patent/CA2544434C/en active Active
- 2004-10-29 WO PCT/US2004/035979 patent/WO2005045635A2/en active Application Filing
- 2004-10-29 EP EP04796734.4A patent/EP1690157B1/en active Active
-
2007
- 2007-02-13 US US11/706,002 patent/US7387023B2/en active Active
-
2008
- 2008-06-13 US US12/138,841 patent/US7836763B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326851A (en) * | 1980-10-24 | 1982-04-27 | Coulter Electronics, Inc. | Level sensor apparatus and method |
US5027075A (en) * | 1989-09-18 | 1991-06-25 | Nova Biomedical Corporation | Apparatus for determination of probe contact with a liquid surface |
US4977786A (en) * | 1990-01-18 | 1990-12-18 | E. I. Du Pont De Nemours And Company | Capacitive liquid level sensor |
US5365783A (en) * | 1993-04-30 | 1994-11-22 | Packard Instrument Company, Inc. | Capacitive sensing system and technique |
US5855851A (en) * | 1996-07-19 | 1999-01-05 | Hitachi, Ltd. | Apparatus for trasferring liquid having liquid level sensing function |
US6328934B1 (en) * | 1996-09-17 | 2001-12-11 | Pharmacia Ab | Device for detection of when a test probe gets into contact with a liquid surface |
Also Published As
Publication number | Publication date |
---|---|
US20090000374A1 (en) | 2009-01-01 |
EP1690157A2 (en) | 2006-08-16 |
CA2544434A1 (en) | 2005-05-19 |
US7191647B2 (en) | 2007-03-20 |
US20070137315A1 (en) | 2007-06-21 |
WO2005045635A2 (en) | 2005-05-19 |
US20050092080A1 (en) | 2005-05-05 |
EP1690157B1 (en) | 2018-03-07 |
US7387023B2 (en) | 2008-06-17 |
EP1690157A4 (en) | 2007-05-09 |
CA2544434C (en) | 2013-09-10 |
US7836763B2 (en) | 2010-11-23 |
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