JPS5664663A - Solution electric conductivity measuring system - Google Patents
Solution electric conductivity measuring systemInfo
- 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
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.
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) |
-
1979
- 1979-10-31 JP JP14111779A patent/JPS5664663A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6212860B2 (en) | 1987-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6435274A (en) | Self feeder type electrically measuring apparatus insulated from electric oscillation | |
GB1383377A (en) | Sign' 'power transmitting apparatus | |
GB1535110A (en) | Capacitance measuring bridge | |
JPS5664663A (en) | Solution electric conductivity measuring system | |
JPS574378A (en) | Measuring device for welding current | |
JPS57156680A (en) | Inverter device | |
JPS57115974A (en) | Welding machine | |
ES482791A1 (en) | Stabilised power supply for a video frequency receiver and a receiver comprising such a circuit. | |
GB1170147A (en) | Improved Electrical Measuring Apparatus. | |
JPS56154839A (en) | Power feeding circuit of optical submarine repeater | |
SE8205104D0 (en) | DEVICE FOR Saturation of a torque current | |
JPS57132458A (en) | Insulation system | |
SU1690986A1 (en) | Welding machine | |
JPS56150967A (en) | Switching power source | |
SU572807A1 (en) | Device for simulating problems of electromagnetic induction | |
SU1264055A1 (en) | Contactless conductometric transducer | |
SU433983A1 (en) | THE DEVICE FOR THE CONTACT ROLLER WELDING | |
JPS5750614A (en) | Electromagnetic flowmeter | |
FR2428931A1 (en) | Detector for power line breaks - uses two or three winding reed relay with associated rectifying diodes | |
GB1369382A (en) | Electrical relays | |
JPS5597182A (en) | Switching regulator | |
JPS5670467A (en) | Detector for change in impedance | |
GB1108084A (en) | Measurement of thickness and/or electrical resistivity of conductive sheet | |
JPS54146913A (en) | In-phase current detector circuit | |
JPS6486299A (en) | Input and output isolating type two-wire transmitter |