JPS5574472A - Device for measuring conductivity of fluid - Google Patents
Device for measuring conductivity of fluidInfo
- 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
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
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)
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 |
-
1978
- 1978-11-30 JP JP14712978A patent/JPS5574472A/en active Pending
Cited By (3)
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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