JPS57122365A - Method and apparatus for measuring electric conductivity of liquid - Google Patents

Method and apparatus for measuring electric conductivity of liquid

Info

Publication number
JPS57122365A
JPS57122365A JP875081A JP875081A JPS57122365A JP S57122365 A JPS57122365 A JP S57122365A JP 875081 A JP875081 A JP 875081A JP 875081 A JP875081 A JP 875081A JP S57122365 A JPS57122365 A JP S57122365A
Authority
JP
Japan
Prior art keywords
potential
electrode
electrodes
electric conductivity
cylinder
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP875081A
Other languages
Japanese (ja)
Inventor
Takayasu Oike
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TSURUMI PRECISION INSTR
TSURUMI SEIKI KK
Original Assignee
TSURUMI PRECISION INSTR
TSURUMI SEIKI KK
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 TSURUMI PRECISION INSTR, TSURUMI SEIKI KK filed Critical TSURUMI PRECISION INSTR
Priority to JP875081A priority Critical patent/JPS57122365A/en
Publication of JPS57122365A publication Critical patent/JPS57122365A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/22—Measuring resistance of fluids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To achieve a highly accurate meausrement in a wide range by taking out a signal corresponding to current flowing between engergizing electrodes as a signal proportional to a liquid electric conductivity with the potential difference so set to equal to specified value. CONSTITUTION:An electrode cylinder 20 is equipped with a body 21 with a specified inner diameter and thickness made of a hard insulater in a bottomed cylinder shape. Energizing electrodes 11 and 12 are mounted both inside and outside the cylindrical section located near the bottom thereof. Measuring electrodes 13 and 14 are mounted inside the electrode cylinder located closer to the opening from the electrodes 11 and 12 thereof. The cylinder 20 is dipped into a liquid and an alternating voltage is applied between the power source terminal 15 and the ground. An arithmetic amplifier 16 sets the potential of the electrode 11 so that the potential of the electrode 13 equals the potential (e) at the end of the power source 15. An arithmetic amplifier 17 sets the potential of the electrode 12 so that the potential of the electrode 14 equals zero potential of the ground. The potential difference of a detection resistance R2 is determined with a subtraction circuit 18 thereby allowing a signal to be taken out from the output terminal 1 in proportion to a liquid electric conductivity (1/r).
JP875081A 1981-01-23 1981-01-23 Method and apparatus for measuring electric conductivity of liquid Pending JPS57122365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP875081A JPS57122365A (en) 1981-01-23 1981-01-23 Method and apparatus for measuring electric conductivity of liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP875081A JPS57122365A (en) 1981-01-23 1981-01-23 Method and apparatus for measuring electric conductivity of liquid

Publications (1)

Publication Number Publication Date
JPS57122365A true JPS57122365A (en) 1982-07-30

Family

ID=11701600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP875081A Pending JPS57122365A (en) 1981-01-23 1981-01-23 Method and apparatus for measuring electric conductivity of liquid

Country Status (1)

Country Link
JP (1) JPS57122365A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533872A (en) * 1976-07-01 1978-01-13 Kyoto Denshi Kougiyou Kk Method of measuring conductivity of solution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533872A (en) * 1976-07-01 1978-01-13 Kyoto Denshi Kougiyou Kk Method of measuring conductivity of solution

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