JPS5664663A - Solution electric conductivity measuring system - Google Patents

Solution electric conductivity measuring system

Info

Publication number
JPS5664663A
JPS5664663A JP14111779A JP14111779A JPS5664663A JP S5664663 A JPS5664663 A JP S5664663A JP 14111779 A JP14111779 A JP 14111779A JP 14111779 A JP14111779 A JP 14111779A JP S5664663 A JPS5664663 A JP S5664663A
Authority
JP
Japan
Prior art keywords
line
output
picked
operational
electric conductivity
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
JP14111779A
Other languages
Japanese (ja)
Other versions
JPS6212860B2 (en
Inventor
Shoichi Nishikawa
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.)
Denka Co Ltd
DKK Corp
Original Assignee
DKK Corp
Denki Kagaku Kogyo 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 DKK Corp, Denki Kagaku Kogyo KK filed Critical DKK Corp
Priority to JP14111779A priority Critical patent/JPS5664663A/en
Publication of JPS5664663A publication Critical patent/JPS5664663A/en
Publication of JPS6212860B2 publication Critical patent/JPS6212860B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To stabilize operations by a method wherein a two wire system transmission line is used jointly for supplying operational electric power and for transmission of detection signals and therewith, line structure is simplified, furthermore, direct current between input and output terminals of the transmitting side is insulated by insulating transformers. CONSTITUTION:When a DC power source ES is connected to a transmitting side circuit through a line L, a negative side operational voltage obtained through a rectifying element D1 from the primary coil winding current of an insulating transformer T2 is picked up at a terminal -E2. An oscillating circuit composed of inverters Q12, 13 operates, and the oscillation output is applied to the primary coil winding of the insulating transformer T2 and it is picked up from terminals +E1, -E1 of the secondary side as positive and negative operational voltages. An oscillating circuit composed of an arithmetic amplifier Q1 oscillates and a rectangular wave signal is applied to a cell CE for measuring electric conductivity. The output of an arithmetic amplifier Q4 proportional to the conductivity is transmitted to a receiving system RD through a transmission line L, thus, it is indicated or stored.
JP14111779A 1979-10-31 1979-10-31 Solution electric conductivity measuring system Granted JPS5664663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14111779A JPS5664663A (en) 1979-10-31 1979-10-31 Solution electric conductivity measuring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14111779A JPS5664663A (en) 1979-10-31 1979-10-31 Solution electric conductivity measuring system

Publications (2)

Publication Number Publication Date
JPS5664663A true JPS5664663A (en) 1981-06-01
JPS6212860B2 JPS6212860B2 (en) 1987-03-20

Family

ID=15284546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14111779A Granted JPS5664663A (en) 1979-10-31 1979-10-31 Solution electric conductivity measuring system

Country Status (1)

Country Link
JP (1) JPS5664663A (en)

Also Published As

Publication number Publication date
JPS6212860B2 (en) 1987-03-20

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