JPS5574472A - Device for measuring conductivity of fluid - Google Patents

Device for measuring conductivity of fluid

Info

Publication number
JPS5574472A
JPS5574472A JP14712978A JP14712978A JPS5574472A JP S5574472 A JPS5574472 A JP S5574472A JP 14712978 A JP14712978 A JP 14712978A JP 14712978 A JP14712978 A JP 14712978A JP S5574472 A JPS5574472 A JP S5574472A
Authority
JP
Japan
Prior art keywords
voltage
fluid
conductivity
electrode
sampling
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
JP14712978A
Other languages
Japanese (ja)
Inventor
Tsuneo Okamoto
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.)
Kawamura Institute of Chemical Research
DIC Corp
Original Assignee
Kawamura Institute of Chemical Research
Dainippon Ink and Chemicals Co 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 Kawamura Institute of Chemical Research, Dainippon Ink and Chemicals Co Ltd filed Critical Kawamura Institute of Chemical Research
Priority to JP14712978A priority Critical patent/JPS5574472A/en
Publication of JPS5574472A publication Critical patent/JPS5574472A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To measure the conductivity of a fluid for a long period of time stably, accurately and continuously by using as a source for measuring the conductivity a special square wave AC and amplifying, sampling and holding a voltage corresponding to the waveform of a current flowing to a measuring electrode.
CONSTITUTION: A voltage is applied to an electrode 2 from an electrode 1 through a resistor 6, and by this voltage a current flows between the electrodes through a fluid 14 to be measured. The current flowing to the electrodes is supplied as output to a differential amplifier 7 by which a voltage corresponding to the input current is amplified. This voltage is detected by a sampling circuit 4 and a sampling hold circuit 5, and furthermore led to an output terminal 13 through a buffer amplifier 11 and indicated as a conductivity.
COPYRIGHT: (C)1980,JPO&Japio
JP14712978A 1978-11-30 1978-11-30 Device for measuring conductivity of fluid Pending JPS5574472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14712978A JPS5574472A (en) 1978-11-30 1978-11-30 Device for measuring conductivity of fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14712978A JPS5574472A (en) 1978-11-30 1978-11-30 Device for measuring conductivity of fluid

Publications (1)

Publication Number Publication Date
JPS5574472A true JPS5574472A (en) 1980-06-05

Family

ID=15423205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14712978A Pending JPS5574472A (en) 1978-11-30 1978-11-30 Device for measuring conductivity of fluid

Country Status (1)

Country Link
JP (1) JPS5574472A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57182659A (en) * 1981-05-07 1982-11-10 Tomoshi Nishida Direct current resistance measuring device
JPS60126916A (en) * 1983-12-13 1985-07-06 Matsushita Electric Ind Co Ltd Positive and negative pulse generating circuit of electric detector
JPS6134482U (en) * 1984-07-31 1986-03-03 電気化学計器株式会社 Conductivity measurement circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57182659A (en) * 1981-05-07 1982-11-10 Tomoshi Nishida Direct current resistance measuring device
JPS60126916A (en) * 1983-12-13 1985-07-06 Matsushita Electric Ind Co Ltd Positive and negative pulse generating circuit of electric detector
JPS6134482U (en) * 1984-07-31 1986-03-03 電気化学計器株式会社 Conductivity measurement circuit

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