JPS64474A - Method for measuring electrical conductivity of high-concentration liquid - Google Patents

Method for measuring electrical conductivity of high-concentration liquid

Info

Publication number
JPS64474A
JPS64474A JP15600387A JP15600387A JPS64474A JP S64474 A JPS64474 A JP S64474A JP 15600387 A JP15600387 A JP 15600387A JP 15600387 A JP15600387 A JP 15600387A JP S64474 A JPS64474 A JP S64474A
Authority
JP
Japan
Prior art keywords
inter
electrode
obtd
impression voltage
measurement
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.)
Granted
Application number
JP15600387A
Other languages
Japanese (ja)
Other versions
JPH01474A (en
JPH0677038B2 (en
Inventor
Teruyoshi Minaki
Tsutomu Matsui
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
Yokogawa 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 Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP15600387A priority Critical patent/JPH0677038B2/en
Publication of JPH01474A publication Critical patent/JPH01474A/en
Publication of JPS64474A publication Critical patent/JPS64474A/en
Publication of JPH0677038B2 publication Critical patent/JPH0677038B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the influence of an inter-electrode capacity by making measurement by using an AC impression voltage of ordinary frequencies and obtaining the signal output associated only with the inter-electrode resistance by the result of this measurement and the approximation equation.
CONSTITUTION: A multiplexer 3 is switched by a switching signal VS from an arithmetic control part 4 and the AC impression voltage of two kinds of different frequencies (f1, f2) from a frequency divider is impressed between electrodes E1 and E2 and the inter-electrode impedances Z1, Z2 of this time are measured. The prescribed equation is then obtd. in accordance with f1, f2, Z1, Z2 and is stored in the part 4. The electrodes E1, E2 are thereafter immersed in a high-concn. measuring liquid and the measurement is made by impressing the AC impression voltage V1 of the ordinary frequency f3 (f1, f2 are equally well). The signal component in the prescribed equation determined by the computation is subtracted from the output signal corresponding to the measured inter-electrode impedance Z and the signal output associated only to the inter-electrode resistance is obtd. The influence of the inter-electrode capacity is thus obtd. without using the AC impression voltage of high frequencies.
COPYRIGHT: (C)1989,JPO&Japio
JP15600387A 1987-06-23 1987-06-23 Conductivity measurement method Expired - Lifetime JPH0677038B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15600387A JPH0677038B2 (en) 1987-06-23 1987-06-23 Conductivity measurement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15600387A JPH0677038B2 (en) 1987-06-23 1987-06-23 Conductivity measurement method

Publications (3)

Publication Number Publication Date
JPH01474A JPH01474A (en) 1989-01-05
JPS64474A true JPS64474A (en) 1989-01-05
JPH0677038B2 JPH0677038B2 (en) 1994-09-28

Family

ID=15618206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15600387A Expired - Lifetime JPH0677038B2 (en) 1987-06-23 1987-06-23 Conductivity measurement method

Country Status (1)

Country Link
JP (1) JPH0677038B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020003356A (en) * 2018-06-28 2020-01-09 日本ピラー工業株式会社 Sensor device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5985282B2 (en) 2012-07-12 2016-09-06 ルネサスエレクトロニクス株式会社 Semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020003356A (en) * 2018-06-28 2020-01-09 日本ピラー工業株式会社 Sensor device

Also Published As

Publication number Publication date
JPH0677038B2 (en) 1994-09-28

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