CN104483555B - A kind of electrode swing type liquid electric conductivity measuring method - Google Patents
A kind of electrode swing type liquid electric conductivity measuring method Download PDFInfo
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- CN104483555B CN104483555B CN201410830508.4A CN201410830508A CN104483555B CN 104483555 B CN104483555 B CN 104483555B CN 201410830508 A CN201410830508 A CN 201410830508A CN 104483555 B CN104483555 B CN 104483555B
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- electrode
- electrode end
- binding post
- ammeter
- pressure source
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- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 3
- 230000010287 polarization Effects 0.000 abstract description 9
- 239000004020 conductor Substances 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000000205 computational method Methods 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A kind of electrode swing type liquid electric conductivity measuring method is disclosed, make fluid to be measured quick back and forth through the gap between two electrode tips using swing mechanism, souring is formed to two surfaces of electrode tip, measuring electrode surface can not assemble and adhere to ion to form firm electric double layer, avoid electrode polarization, row energization is entered using the easy DC voltage realized, method of testing and computational methods are simple and reliable, the influence of the distribution capacity between electrode interpolar and contact conductor need not be considered, anti-interference is extremely strong.
Description
Technical field
The technical program is related to the measuring method of liquid electric conductivity or resistivity, more particularly to electrode polarization can be completely eliminated
And using the liquid electric conductivity or method of measuring resistivity of continuous current excitation.
Background technology
The measurement of liquid electric conductivity is widely used in the numerous areas such as industrial production, water quality monitoring.Electrical conductivity of solution
Fundamental method of measurement is the voltage U that measurement is applied on the two ends of the electrode for the inserting solution and electric current I for flowing through electrode, calculates electricity
Resistance R=U/I between pole, the electrical conductivity of solution is calculated with G=K/R, and wherein K is electrode constant.But the electrode inserted in solution
Polarization can be produced after powered up, the voltage U for measuring substantially is not the voltage at solution two ends in itself, and be consequently exerted at solution electricity
Voltage on resistance series connection electrode polarization two virtual electronic devices of equivalent capacity, therefore there is theoretical error in formula R=U/I；In order to
Reduce influence of the electrode polarization to accuracy of measurement, conventional method is to apply the symmetrical alternating current of positive-negative polarity on electrode such as
Sine wave enters row energization, but ac-excited method is that can reduce electrode polarization influence, and electrode polarization can not be completely eliminated
Influence, and ac-excited electrode interelectrode capacity and the contact conductor electric capacity of introducing is to the adverse effect that measures.
The content of the invention
The purpose of the technical program is to provide a kind of liquid electric that electrode polarization is completely eliminated and continuous current excitation is used
Conductance measuring method.
Realizing the technical scheme of above-mentioned purpose is：A kind of electrode swing type liquid electric conductivity measuring method, comprising following step
Suddenly：1st, it is that first electrode end, second electrode end are completely disposed at the conductance that holds fluid to be measured by two electrode tips of measuring electrode
Chi Zhong；2nd, swing mechanism starts, and it is first electrode end, second electrode end in fluid to be measured to drive horn and two electrode tips
It is quick back and forth to swing, fluid to be measured is passed rapidly through the gap between two electrode tips i.e. first electrode end, second electrode end；3、
Apply constant direct energizing voltages by two nodes of the binding post positioned at the swinging center position of swing mechanism；4th, use
Ammeter measurement flows through the DC current of fluid to be measured；5th, electrical conductivity is calculated with reference to the electrode constant of measuring electrode；
Measuring circuit is connected as：Two nodes of binding post are connected to constant pressure source and ammeter by cord, constitute
Current loop be：A positive pole -- node -- first electrode end -- fluid to be measured -- of binding post of constant pressure source
Second electrode end -- another node -- positive pole of ammeter -- negative pole of ammeter -- constant pressure source of binding post
Negative pole -- the positive pole of constant pressure source.
The innovative point of the technical program is：Swing mechanism swings makes fluid to be measured pass rapidly through between two electrode tips
Gap, two electrode tips are formed with sourings, therefore can not to assemble and adhere to ion firm to be formed on measuring electrode surface
Electric double layer, it is to avoid electrode polarization, row energization is entered using the easy DC voltage realized, without considering electrode interpolar and electrode
The influence of the distribution capacity between lead, anti-interference is extremely strong.
Brief description of the drawings
Fig. 1 is the hardware system of the front view comprising liquid conductivity measurement electrode involved by the technical scheme of the application
Schematic diagram.
Fig. 2 is the hardware system of the left view comprising liquid conductivity measurement electrode involved by the technical scheme of the application
Schematic diagram.
Specific embodiment
The technical scheme to the application is further described below in conjunction with the accompanying drawings：
In Fig. 1 and 2,1 and 2 represent two electrode tips of measuring electrode, referred to as first electrode end 1 and second electrode end 2,3
Horn is represented, 4 is swing mechanism, and 5 is electric connecting wire, and 6 is binding post, and two electrode tips are first electrode end 1, second
Electrode tip 2 is flat metal piece, be parallel to each other and leave gap, it is honest face, two electrode tips are first electrode end 1, second
Electrode tip 2 is fixedly installed in horn 3 and is mechanically connected to swing mechanism 4 by horn 3, and two electrode tips are first electrode
End 1, second electrode end 2 is electrically connected to the pendulum positioned at swing mechanism 4 by electric connecting wire 5 through the boring of horn 3
The binding post 6 of dynamic axis part, electric connecting wire 5 includes two, and binding post 6 includes two nodes, first electrode end 1,
Second electrode end 2 is connected to the respective correspondence in two nodes of binding post 6 each via an electric connecting wire 5
Node.
Circuit is connected as：Two nodes of binding post 6 are connected to constant pressure source E and ammeter A by cord, composition
Current loop is：A positive pole -- node -- first electrode end 1 -- fluid to be measured-of binding post 6 of constant pressure source E
- -- another node -- positive pole of ammeter A -- negative pole of ammeter A -- of binding post 6 of second electrode end 2
The negative pole of constant pressure source E -- the positive pole of constant pressure source E.
Measurement liquid electric conductivity the step of be：1st, it is first electrode end 1, second electrode by two electrode tips of measuring electrode
End 2 is completely disposed in the conductance cell for holding fluid to be measured；2nd, swing mechanism 4 starts, and it is the to drive horn 3 and two electrode tips
One electrode tip 1, second electrode end 2 are quick back and forth in fluid to be measured to be swung, and fluid to be measured is passed rapidly through two electrode tips i.e.
Gap between first electrode end 1, second electrode end 2；3rd, by the binding post positioned at the swinging center position of swing mechanism 4
It is constant pressure source E that 6 two nodes apply constant direct energizing voltages；4th, the direct current of fluid to be measured is flowed through with ammeter A measurements
Electric current；5th, electrical conductivity is calculated with reference to the electrode constant of measuring electrode.
Claims (1)
1. a kind of electrode swing type liquid electric conductivity measuring method, it is characterised in that comprise the following steps：1st, by measuring electrode
Two electrode tips are that first electrode end, second electrode end are completely disposed in the conductance cell for holding fluid to be measured；2nd, swing mechanism is opened
It is dynamic, drive horn and two electrode tips to be that first electrode end, second electrode end are quick back and forth in fluid to be measured and swing, make by
Survey the gap that liquid is passed rapidly through between two electrode tips i.e. first electrode end, second electrode end；3rd, by positioned at swing mechanism
Two nodes of binding post at swinging center position apply constant direct energizing voltages；4th, with ammeter measurement stream through quilt
Survey the DC current of liquid；5th, electrical conductivity is calculated with reference to the electrode constant of measuring electrode；
Measuring circuit is connected as：Two nodes of binding post are connected to constant pressure source and ammeter, the electricity of composition by cord
Flowing loop is：A positive pole -- node -- first electrode end -- fluid to be measured -- second of binding post of constant pressure source
Electrode tip -- another node of binding post -- positive pole of ammeter -- negative pole of ammeter -- constant pressure source it is negative
The positive pole of pole -- constant pressure source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830508.4A CN104483555B (en) | 2014-12-26 | 2014-12-26 | A kind of electrode swing type liquid electric conductivity measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830508.4A CN104483555B (en) | 2014-12-26 | 2014-12-26 | A kind of electrode swing type liquid electric conductivity measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104483555A CN104483555A (en) | 2015-04-01 |
| CN104483555B true CN104483555B (en) | 2017-05-31 |
Family
ID=52758120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410830508.4A Expired - Fee Related CN104483555B (en) | 2014-12-26 | 2014-12-26 | A kind of electrode swing type liquid electric conductivity measuring method |
Country Status (1)
| Country | Link |
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| CN (1) | CN104483555B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61230814A (en) * | 1985-04-05 | 1986-10-15 | Brother Ind Ltd | Conductivity measuring apparatus of working liquid in electric discharge machine |
| JPH07234197A (en) * | 1994-02-25 | 1995-09-05 | Omron Corp | Liquid quality sensing device and method |
| CN2225690Y (en) * | 1995-07-17 | 1996-04-24 | 许一鸣 | Sensor for conductivity |
| CN1821763A (en) * | 2006-03-22 | 2006-08-23 | 黄伟忠 | Method for measuring solution conductivity |
| CN101398405B (en) * | 2008-11-04 | 2012-07-25 | 中国农业大学 | Water electric conductivity intelligent sensor |
| JP2011027613A (en) * | 2009-07-28 | 2011-02-10 | Yokogawa Electric Corp | Conductivity meter |
| CN202948068U (en) * | 2012-09-19 | 2013-05-22 | 福建师范大学 | Measuring device for measuring conductivity of solution excited by two kinds of sine wave signals arranged in a superposing way and having different frequencies |
-
2014
- 2014-12-26 CN CN201410830508.4A patent/CN104483555B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104483555A (en) | 2015-04-01 |
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