JPS57203973A - Measuring device for electrical conductivity - Google Patents

Measuring device for electrical conductivity

Info

Publication number
JPS57203973A
JPS57203973A JP8756181A JP8756181A JPS57203973A JP S57203973 A JPS57203973 A JP S57203973A JP 8756181 A JP8756181 A JP 8756181A JP 8756181 A JP8756181 A JP 8756181A JP S57203973 A JPS57203973 A JP S57203973A
Authority
JP
Japan
Prior art keywords
switch
circuit
current
contact
voltage transformer
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
JP8756181A
Other languages
Japanese (ja)
Inventor
Hironobu Oota
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP8756181A priority Critical patent/JPS57203973A/en
Publication of JPS57203973A publication Critical patent/JPS57203973A/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 enable measurement of an electrical conductivity without being affected by serial impedance, by providing a current-voltage transformer between two switches and by connecting the switch on the latter stage to an operation circuit and a phase measuring circuit. CONSTITUTION:One of electrodes 1 is connected to a contact (1) of a switch S1, while the other is connected to a contact (2) of the switch S1 and also to one terminal of a current-voltage transformer 3 through the intermediary of an AC power source 2. the other end of the current-voltage transformer is connected to a common terminal of a switch S1. The output side of the current-voltage transformer 3 is connected to a common terminal of a switch S2. A contact (1) of the switch S2 is connected to a serial body composed of a rectifying circuit 4, a smoothing circuit 5, an amplifying circuit 6, an operation circuit 7 and a recorder 9 which are connected in this order. A contact (2) of the switch S2 is connected to one input terminal of a phase measuring circuit 10 through the intermediary of a comparator 9. An AC power source 2 is connected to the other input terminal of the phase measuring circuit through the intermediary of a make-and-break switch S3 and a comparator 11. The phase measuring device 10 is connected to the operation circuit 7.
JP8756181A 1981-06-09 1981-06-09 Measuring device for electrical conductivity Pending JPS57203973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8756181A JPS57203973A (en) 1981-06-09 1981-06-09 Measuring device for electrical conductivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8756181A JPS57203973A (en) 1981-06-09 1981-06-09 Measuring device for electrical conductivity

Publications (1)

Publication Number Publication Date
JPS57203973A true JPS57203973A (en) 1982-12-14

Family

ID=13918395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8756181A Pending JPS57203973A (en) 1981-06-09 1981-06-09 Measuring device for electrical conductivity

Country Status (1)

Country Link
JP (1) JPS57203973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62187844U (en) * 1986-05-20 1987-11-30
JPH01245143A (en) * 1988-03-28 1989-09-29 Tomita Seiyaku Kk Analysis of chemical material
NL9301095A (en) * 1993-06-23 1995-01-16 Yokogawa Europ Bv Method and apparatus for inductively measuring the conductivity of a fluid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62187844U (en) * 1986-05-20 1987-11-30
JPH0515090Y2 (en) * 1986-05-20 1993-04-21
JPH01245143A (en) * 1988-03-28 1989-09-29 Tomita Seiyaku Kk Analysis of chemical material
JPH0547776B2 (en) * 1988-03-28 1993-07-19 Tomita Pharma
NL9301095A (en) * 1993-06-23 1995-01-16 Yokogawa Europ Bv Method and apparatus for inductively measuring the conductivity of a fluid

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