WO2000014523A3 - Apparatus for monitoring the operability of an electrochemical sensor - Google Patents

Apparatus for monitoring the operability of an electrochemical sensor Download PDF

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Publication number
WO2000014523A3
WO2000014523A3 PCT/CA1999/000809 CA9900809W WO0014523A3 WO 2000014523 A3 WO2000014523 A3 WO 2000014523A3 CA 9900809 W CA9900809 W CA 9900809W WO 0014523 A3 WO0014523 A3 WO 0014523A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
monitoring
electrical characteristics
conductance
electrochemical sensor
Prior art date
Application number
PCT/CA1999/000809
Other languages
French (fr)
Other versions
WO2000014523A2 (en
Inventor
Klaus Tomantschger
Nai-Yong Tang
Yihui Liu
Original Assignee
Cominco Ltd
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 Cominco Ltd filed Critical Cominco Ltd
Priority to AU55004/99A priority Critical patent/AU5500499A/en
Publication of WO2000014523A2 publication Critical patent/WO2000014523A2/en
Publication of WO2000014523A3 publication Critical patent/WO2000014523A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
    • G01N27/4175—Calibrating or checking the analyser
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/205—Metals in liquid state, e.g. molten metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

An apparatus for monitoring the status of an electrochemical sensor includes a measuring device for monitoring various electrical characteristics of the sensor and a processor for comparing such electrical characteristics to pre-determined values. The apparatus signals the operator when such characteristics deviate a pre-determined amount from a set point thereby signaling a failure of the sensor. Sensors for which the present invention is applicable include concentration sensors such as those used for quantifying the concentration of elements in molten metal samples. The electrical characteristics that are measured include AC impedance or conductance, DC resistance or conductance, and the EMF output of the sensor. Such measured characteristics can also be compared to calculated values by imposing temperature perturbations into the sample being tested.
PCT/CA1999/000809 1998-09-09 1999-09-09 Apparatus for monitoring the operability of an electrochemical sensor WO2000014523A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55004/99A AU5500499A (en) 1998-09-09 1999-09-09 Apparatus for monitoring the operability of an electrochemical sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14994798A 1998-09-09 1998-09-09
US09/149,947 1998-09-09

Publications (2)

Publication Number Publication Date
WO2000014523A2 WO2000014523A2 (en) 2000-03-16
WO2000014523A3 true WO2000014523A3 (en) 2000-06-08

Family

ID=22532478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1999/000809 WO2000014523A2 (en) 1998-09-09 1999-09-09 Apparatus for monitoring the operability of an electrochemical sensor

Country Status (2)

Country Link
AU (1) AU5500499A (en)
WO (1) WO2000014523A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7985330B2 (en) 2005-12-30 2011-07-26 Medtronic Minimed, Inc. Method and system for detecting age, hydration, and functional states of sensors using electrochemical impedance spectroscopy
US8114268B2 (en) 2005-12-30 2012-02-14 Medtronic Minimed, Inc. Method and system for remedying sensor malfunctions detected by electrochemical impedance spectroscopy
US8114269B2 (en) 2005-12-30 2012-02-14 Medtronic Minimed, Inc. System and method for determining the point of hydration and proper time to apply potential to a glucose sensor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0402047D0 (en) * 2004-08-18 2004-08-18 Foss Analytical Ab Measurement system
US7297242B2 (en) * 2004-08-25 2007-11-20 Honeywell International, Inc. Self-adjusting electrochemical sensor
US7232512B2 (en) * 2004-08-25 2007-06-19 Honeywell International, Inc. System and method of sensitivity adjustment for an electrochemical sensor
CN101135662B (en) * 2006-08-30 2010-11-10 梅特勒-托利多仪器（上海）有限公司 Electric potential analyse electric pole measuring method and apparatus
US20110199094A1 (en) * 2010-02-16 2011-08-18 Hamilton Sundstrand Corporation Gas Sensor Age Compensation and Failure Detection
US11079363B2 (en) * 2017-08-03 2021-08-03 Industrial Scientific Corporation Systems and methods for evaluating toxic gas sensors using electrochemical impedance spectroscopy

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071817A (en) * 1976-03-08 1978-01-31 Suntech, Inc. High temperature electrochemical cell tester
US4189367A (en) * 1978-10-19 1980-02-19 Leeds & Northrup Company Method for testing ion selective electrodes in continuous measuring systems
US4223549A (en) * 1979-02-16 1980-09-23 Noranda Mines Limited Oxygen monitoring circuit with built in testing means
EP0497994A1 (en) * 1991-01-28 1992-08-12 KNICK ELEKTRONISCHE MESSGERÄTE GMBH & CO. Method and circuit for monitoring an ion- or redox-potential measuring electrode system
WO1992021962A1 (en) * 1991-06-07 1992-12-10 Ingold Messtechnik Ag METHOD OF MONITORING THE OPERABILITY OF pH-PROBES
US5268852A (en) * 1991-10-25 1993-12-07 Rosemount Analytical Inc. Self diagnostic pH sensor
US5611909A (en) * 1994-12-22 1997-03-18 Dragerwerk Aktiengesellschaft Method for detecting source of error in an amperometric measuring cell
WO1998013688A1 (en) * 1996-09-24 1998-04-02 Rosemount Analytical Inc. Diagnostic method and apparatus for solid electrolyte gas analyzer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071817A (en) * 1976-03-08 1978-01-31 Suntech, Inc. High temperature electrochemical cell tester
US4189367A (en) * 1978-10-19 1980-02-19 Leeds & Northrup Company Method for testing ion selective electrodes in continuous measuring systems
US4223549A (en) * 1979-02-16 1980-09-23 Noranda Mines Limited Oxygen monitoring circuit with built in testing means
EP0497994A1 (en) * 1991-01-28 1992-08-12 KNICK ELEKTRONISCHE MESSGERÄTE GMBH & CO. Method and circuit for monitoring an ion- or redox-potential measuring electrode system
WO1992021962A1 (en) * 1991-06-07 1992-12-10 Ingold Messtechnik Ag METHOD OF MONITORING THE OPERABILITY OF pH-PROBES
US5268852A (en) * 1991-10-25 1993-12-07 Rosemount Analytical Inc. Self diagnostic pH sensor
US5611909A (en) * 1994-12-22 1997-03-18 Dragerwerk Aktiengesellschaft Method for detecting source of error in an amperometric measuring cell
WO1998013688A1 (en) * 1996-09-24 1998-04-02 Rosemount Analytical Inc. Diagnostic method and apparatus for solid electrolyte gas analyzer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KITZELMANN D ET AL: "ELECTROCHEMISCHE GASSENSOREN - WIRKUNGSWEISEN UND MOEGLICHKEITEN ZUR FUNKTIONSUEBERWACHUNG. ELECTROCHEMICAL GAS SENSORS- PRINCIPLES AND PERSPECTIVES OF A CONTINUOUS SENSOR CHECK", TECHNISCHES MESSEN TM,DE,R.OLDENBOURG VERLAG. MUNCHEN, vol. 62, no. 4, pages 152-159, XP000516378, ISSN: 0171-8096 *
PAYNE R: "PREDICTIVE SENSOR DIAGNOSTICS REDUCE DOWNTIME AND COSTS. ÖEARLY WARNINGS OF SENSOR FAILURES HELP PREVENT UNSCHEDULED PROCESS SHUTDOWNS", I & CS - INDUSTRIAL AND PROCESS CONTROL MAGAZINE,US,CHILTON COMPANY. RADNOR, PENNSYLVANIA, vol. 66, no. 5, pages 59-60,63, XP000370081, ISSN: 0746-2395 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7985330B2 (en) 2005-12-30 2011-07-26 Medtronic Minimed, Inc. Method and system for detecting age, hydration, and functional states of sensors using electrochemical impedance spectroscopy
US8114268B2 (en) 2005-12-30 2012-02-14 Medtronic Minimed, Inc. Method and system for remedying sensor malfunctions detected by electrochemical impedance spectroscopy
US8114269B2 (en) 2005-12-30 2012-02-14 Medtronic Minimed, Inc. System and method for determining the point of hydration and proper time to apply potential to a glucose sensor
US8608924B2 (en) 2005-12-30 2013-12-17 Medtronic Minimed, Inc. System and method for determining the point of hydration and proper time to apply potential to a glucose sensor

Also Published As

Publication number Publication date
AU5500499A (en) 2000-03-27
WO2000014523A2 (en) 2000-03-16

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