WO2000055611A3 - Measuring cell and method for measuring the conductivity of liquids - Google Patents

Measuring cell and method for measuring the conductivity of liquids Download PDF

Info

Publication number
WO2000055611A3
WO2000055611A3 PCT/NL2000/000169 NL0000169W WO0055611A3 WO 2000055611 A3 WO2000055611 A3 WO 2000055611A3 NL 0000169 W NL0000169 W NL 0000169W WO 0055611 A3 WO0055611 A3 WO 0055611A3
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
conductivity
measuring cell
liquids
current
Prior art date
Application number
PCT/NL2000/000169
Other languages
French (fr)
Other versions
WO2000055611A2 (en
Inventor
Der Grinten Josephus Georg Van
Cornelia Elizabeth Boot
Charles Martin Euduard Peters
Hans Alphonsius Mari Steijaert
Theodoor Lein Hafkenscheid
Andreas Adrianus Mari Trarbach
Original Assignee
Nmi Van Swinden Lab B V
Grinten Josephus Georgius Mari
Cornelia Elizabeth Boot
Charles Martin Euduard Peters
Hans Alphonsius Mari Steijaert
Theodoor Lein Hafkenscheid
Andreas Adrianus Mari Trarbach
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 Nmi Van Swinden Lab B V, Grinten Josephus Georgius Mari, Cornelia Elizabeth Boot, Charles Martin Euduard Peters, Hans Alphonsius Mari Steijaert, Theodoor Lein Hafkenscheid, Andreas Adrianus Mari Trarbach filed Critical Nmi Van Swinden Lab B V
Publication of WO2000055611A2 publication Critical patent/WO2000055611A2/en
Publication of WO2000055611A3 publication Critical patent/WO2000055611A3/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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • G01N27/07—Construction of measuring vessels; Electrodes therefor

Landscapes

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

Abstract

Measuring cell for measuring the conductivity of liquids. The measuring cell comprises two opposite outer electrodes, a first current source, a reference electrode and a voltmeter. The measuring cell further comprises a perforated electrode movably placed between the two outer electrodes, a second current source, the first and the second current source applying a first and a second current, respectively, between the outer electrodes and the perforated electrode, displacement means for moving the perforated electrode to various positions, and switching means for switching between the first and second current between the outer electrodes and the perforated electrode. The electrodes, the current sources, the voltmeter and the switching means are situated in a circuit. Method for measuring the conductivity of a liquid while using the measuring cell.
PCT/NL2000/000169 1999-03-12 2000-03-13 Measuring cell and method for measuring the conductivity of liquids WO2000055611A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1011540A NL1011540C2 (en) 1999-03-12 1999-03-12 Measuring cell for measuring the conductivity of liquids and method for measuring the conductivity of a liquid.
NL1011540 1999-03-12

Publications (2)

Publication Number Publication Date
WO2000055611A2 WO2000055611A2 (en) 2000-09-21
WO2000055611A3 true WO2000055611A3 (en) 2001-04-05

Family

ID=19768827

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2000/000169 WO2000055611A2 (en) 1999-03-12 2000-03-13 Measuring cell and method for measuring the conductivity of liquids

Country Status (2)

Country Link
NL (1) NL1011540C2 (en)
WO (1) WO2000055611A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8342775B2 (en) * 2004-06-30 2013-01-01 Agri Drain Corporation Groundwater control system with purity sensor and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982290A (en) * 1960-03-16 1965-02-03 Wayne Kerr Lab Ltd Improvements in or relating to apparatus for measuring the electrical conductivity of liquids
NL7509233A (en) * 1974-08-02 1976-02-04 Kent Ltd G MEASURING CELL FOR MEASURING THE ELECTRICAL CONDUCTIVITY OF LIQUIDS.
US5138264A (en) * 1988-12-29 1992-08-11 Hitachi, Ltd. Apparatus for measuring electrical conductivity
WO1997016726A1 (en) * 1995-11-02 1997-05-09 Chiron Diagnostics Corporation Planar hematocrit sensor incorporating a seven-electrode conductivity measurement cell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982290A (en) * 1960-03-16 1965-02-03 Wayne Kerr Lab Ltd Improvements in or relating to apparatus for measuring the electrical conductivity of liquids
NL7509233A (en) * 1974-08-02 1976-02-04 Kent Ltd G MEASURING CELL FOR MEASURING THE ELECTRICAL CONDUCTIVITY OF LIQUIDS.
US5138264A (en) * 1988-12-29 1992-08-11 Hitachi, Ltd. Apparatus for measuring electrical conductivity
WO1997016726A1 (en) * 1995-11-02 1997-05-09 Chiron Diagnostics Corporation Planar hematocrit sensor incorporating a seven-electrode conductivity measurement cell

Also Published As

Publication number Publication date
WO2000055611A2 (en) 2000-09-21
NL1011540C2 (en) 2000-10-03

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