WO1998038485A3 - Leak detection system for liquid processing device - Google Patents

Leak detection system for liquid processing device Download PDF

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Publication number
WO1998038485A3
WO1998038485A3 PCT/US1998/003942 US9803942W WO9838485A3 WO 1998038485 A3 WO1998038485 A3 WO 1998038485A3 US 9803942 W US9803942 W US 9803942W WO 9838485 A3 WO9838485 A3 WO 9838485A3
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
liquid processing
sensing resistor
processing device
detection system
Prior art date
Application number
PCT/US1998/003942
Other languages
French (fr)
Other versions
WO1998038485A2 (en
Inventor
Raymond A Carr
Brian C Lauman
Original Assignee
Bristol Myers Squibb Co
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 Bristol Myers Squibb Co filed Critical Bristol Myers Squibb Co
Priority to NZ337335A priority Critical patent/NZ337335A/en
Priority to IL13147098A priority patent/IL131470A0/en
Priority to EP98911438A priority patent/EP0980513A4/en
Priority to CA002282628A priority patent/CA2282628C/en
Priority to JP53791598A priority patent/JP2001517303A/en
Priority to AU65389/98A priority patent/AU724237B2/en
Publication of WO1998038485A2 publication Critical patent/WO1998038485A2/en
Publication of WO1998038485A3 publication Critical patent/WO1998038485A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/186—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators

Abstract

A leak sensor system for use in liquid processing equipment is disclosed. Liquid is detected by a sensing resistor (Rs) whose impedance decreases dramatically in the presence of liquid. The effect of this impedance drop on the output voltage of the sensor indicates a wet or moist state which may indicate leakage from the liquid processing. A terminal resistor (Rt) is in the circuit beyond the sensing resistor (Rs) to provide a warning indicator when the sensing resistor (Rs) is damaged or disconnected. The leak sensor system is particularly useful in centrifuge equipment, e.g., for the processing of blood.
PCT/US1998/003942 1997-02-27 1998-02-27 Leak detection system for liquid processing device WO1998038485A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NZ337335A NZ337335A (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing device
IL13147098A IL131470A0 (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing device
EP98911438A EP0980513A4 (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing device
CA002282628A CA2282628C (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing device
JP53791598A JP2001517303A (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing equipment
AU65389/98A AU724237B2 (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3918497P 1997-02-27 1997-02-27
US60/039,184 1997-02-27

Publications (2)

Publication Number Publication Date
WO1998038485A2 WO1998038485A2 (en) 1998-09-03
WO1998038485A3 true WO1998038485A3 (en) 1999-02-18

Family

ID=21904113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/003942 WO1998038485A2 (en) 1997-02-27 1998-02-27 Leak detection system for liquid processing device

Country Status (8)

Country Link
US (1) US6038914A (en)
EP (1) EP0980513A4 (en)
JP (1) JP2001517303A (en)
AU (1) AU724237B2 (en)
CA (1) CA2282628C (en)
IL (1) IL131470A0 (en)
NZ (1) NZ337335A (en)
WO (1) WO1998038485A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8920355B2 (en) 2007-02-09 2014-12-30 Baxter International Inc. Acoustic access disconnection systems and methods
US8920356B2 (en) 2002-04-10 2014-12-30 Baxter International Inc. Conductive polymer materials and applications thereof including monitoring and providing effective therapy
US9138536B2 (en) 2008-04-01 2015-09-22 Gambro Lundia Ab Apparatus and a method for monitoring a vascular access

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US6812847B1 (en) 2000-08-25 2004-11-02 The Hoover Company Moisture indicator for wet pick-up suction cleaner
US10155082B2 (en) 2002-04-10 2018-12-18 Baxter International Inc. Enhanced signal detection for access disconnection systems
US7052480B2 (en) 2002-04-10 2006-05-30 Baxter International Inc. Access disconnection systems and methods
US7022098B2 (en) 2002-04-10 2006-04-04 Baxter International Inc. Access disconnection systems and methods
US7951182B2 (en) * 2005-07-14 2011-05-31 Zoll Circulation, Inc. System and method for leak detection in external cooling pad
US7605710B2 (en) 2006-08-18 2009-10-20 Fresenius Medical Care Holdings, Inc. Wetness sensor
US8376978B2 (en) * 2007-02-09 2013-02-19 Baxter International Inc. Optical access disconnection systems and methods
US10463778B2 (en) 2007-02-09 2019-11-05 Baxter International Inc. Blood treatment machine having electrical heartbeat analysis
US8114043B2 (en) 2008-07-25 2012-02-14 Baxter International Inc. Electromagnetic induction access disconnect sensor
US20100100026A1 (en) * 2008-10-16 2010-04-22 Fresenius Medical Care Holdings, Inc. Wetness sensor utilizing passive resonant circuits
US8808218B2 (en) * 2010-01-29 2014-08-19 Baxter International Inc. Needle placement detection and security device and method
US8444585B2 (en) * 2010-01-29 2013-05-21 Baxter International Inc. Catheter needle retention and placement monitoring system and method
US9245438B2 (en) 2014-05-27 2016-01-26 Delta Faucet Company Water leak detector for a pipe having a retention reservoir
US10365178B2 (en) 2015-06-30 2019-07-30 Saint-Gobain Performance Plastics Corporation Leak detection system
WO2017115145A1 (en) 2015-12-31 2017-07-06 Delta Faucet Company Water sensor
WO2019104276A1 (en) * 2017-11-27 2019-05-31 Saint-Gobain Performance Plastics Corporation Leak detection system and method of making and using the same
AU2021290310B2 (en) 2020-07-15 2022-08-25 Hollister Incorporated Resistance sensor for identifying leak locations in ostomy system

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US4122389A (en) * 1977-05-23 1978-10-24 Tandy Corporation Moisture sensor
US4227190A (en) * 1979-02-26 1980-10-07 Kelley Jerry K Water alarm for monitoring floor moisture
US4319232A (en) * 1980-03-19 1982-03-09 Westphal Frank C Liquid leakage detector
US5469145A (en) * 1992-05-29 1995-11-21 Johnson; Lonnie Wet diaper detector
US5606264A (en) * 1995-04-21 1997-02-25 Licari; James J. Moisture sensor for electronic modules
US5824883A (en) * 1996-07-16 1998-10-20 Samsung Display Devices Co., Ltd. Battery leakage sensing system

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US3963981A (en) * 1974-10-09 1976-06-15 J. M. Richards Laboratories Leakage and continuity tester
SE409662B (en) * 1977-12-28 1979-09-03 Alfa Laval Ab DEVICE FOR LEAK INDICATION AT A CENTRIFUGAL SEPARATOR
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JPS5624542A (en) * 1979-08-03 1981-03-09 Omron Tateisi Electronics Co Detecting method of leakage of liquid
CA1168707A (en) * 1980-04-22 1984-06-05 Norscan Instruments Ltd. Apparatus to monitor electrical cables, including splice joints and the like for the ingress of moisture
US4502044A (en) * 1982-05-19 1985-02-26 Farris James R Moisture alarm system
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ATE86040T1 (en) * 1985-06-12 1993-03-15 Raychem Corp HYDROCARBON SENSOR.
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US4940543A (en) * 1987-01-30 1990-07-10 Baxter International Inc. Plasma collection set
US5104526A (en) * 1987-01-30 1992-04-14 Baxter International Inc. Centrifugation system having an interface detection system
US4909070A (en) * 1987-10-12 1990-03-20 Smith Jeffery B Moisture sensor
US4942612A (en) * 1988-01-14 1990-07-17 Huck Wu Leakage current preventing means for a drier
US4812778A (en) * 1988-01-25 1989-03-14 Electro-Mechanics, Inc. Isolation amplifier
US5077526A (en) * 1988-03-30 1991-12-31 Automated Light Technologies, Inc. Cable failure detection system
US5232588A (en) * 1991-10-29 1993-08-03 Edd D. Gryder Environmentally beneficial bypass filter system for use with low pressure centrifugal refrigeration equipment
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US5445178A (en) * 1994-02-18 1995-08-29 Feuer; Lenny Soil moisture sensor
US5534790A (en) * 1994-04-13 1996-07-09 International Business Machines Corporation Current transition rate control circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122389A (en) * 1977-05-23 1978-10-24 Tandy Corporation Moisture sensor
US4227190A (en) * 1979-02-26 1980-10-07 Kelley Jerry K Water alarm for monitoring floor moisture
US4319232A (en) * 1980-03-19 1982-03-09 Westphal Frank C Liquid leakage detector
US5469145A (en) * 1992-05-29 1995-11-21 Johnson; Lonnie Wet diaper detector
US5606264A (en) * 1995-04-21 1997-02-25 Licari; James J. Moisture sensor for electronic modules
US5824883A (en) * 1996-07-16 1998-10-20 Samsung Display Devices Co., Ltd. Battery leakage sensing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8920356B2 (en) 2002-04-10 2014-12-30 Baxter International Inc. Conductive polymer materials and applications thereof including monitoring and providing effective therapy
US8920355B2 (en) 2007-02-09 2014-12-30 Baxter International Inc. Acoustic access disconnection systems and methods
US9138528B2 (en) 2007-02-09 2015-09-22 Baxter International Inc. Acoustic access disconnection systems and methods
US9352078B2 (en) 2007-02-09 2016-05-31 Baxter International Inc. Electrical heartbeat access disconnection systems
US9138536B2 (en) 2008-04-01 2015-09-22 Gambro Lundia Ab Apparatus and a method for monitoring a vascular access

Also Published As

Publication number Publication date
AU6538998A (en) 1998-09-18
JP2001517303A (en) 2001-10-02
EP0980513A4 (en) 2002-06-19
WO1998038485A2 (en) 1998-09-03
CA2282628A1 (en) 1998-09-03
EP0980513A2 (en) 2000-02-23
IL131470A0 (en) 2001-01-28
CA2282628C (en) 2006-11-07
AU724237B2 (en) 2000-09-14
US6038914A (en) 2000-03-21
NZ337335A (en) 2001-05-25

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