CN103185742A - Polarographic residual chlorine sensor - Google Patents
Polarographic residual chlorine sensor Download PDFInfo
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- CN103185742A CN103185742A CN201210574488XA CN201210574488A CN103185742A CN 103185742 A CN103185742 A CN 103185742A CN 201210574488X A CN201210574488X A CN 201210574488XA CN 201210574488 A CN201210574488 A CN 201210574488A CN 103185742 A CN103185742 A CN 103185742A
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- utmost point
- conductive material
- residual chlorine
- chlorine sensor
- effect utmost
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- 239000000460 chlorine Substances 0.000 title claims abstract description 57
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 54
- 239000004020 conductor Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000006479 redox reaction Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 69
- 239000012212 insulator Substances 0.000 claims description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052737 gold Inorganic materials 0.000 claims description 12
- 239000010931 gold Substances 0.000 claims description 12
- 238000011088 calibration curve Methods 0.000 claims description 10
- 230000004087 circulation Effects 0.000 claims description 9
- 230000009452 underexpressoin Effects 0.000 claims description 2
- 235000017168 chlorine Nutrition 0.000 description 42
- 238000001514 detection method Methods 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 9
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000003969 polarography Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- 125000001309 chloro group Chemical class Cl* 0.000 description 2
- 238000003411 electrode reaction Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3275—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
- G01N27/3277—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction being a redox reaction, e.g. detection by cyclic voltammetry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/182—Specific anions in water
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- Immunology (AREA)
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- Pathology (AREA)
- Molecular Biology (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The present invention provides a polarographic residual chlorine sensor capable of reducing the change over time of the electrode surface area of a working electrode. The polarographic residual chlorine sensor determiners the residual chlorine concentration by at least immersing the working electrode (2) and a counter electrode in the water to be measured, and measuring the current flow between the working electrode and a counter electrode caused by an oxidation-reduction reaction. The cross-sectional areas of a conductive material (16) constituting the working electrode perpendicular to the axial direction at different positions are the same shape, and are covered by a casing (17) in the manner of leaving axially two end faces, and an end face is immersed in the water to be measured.
Description
Technical field
The present invention relates to use the polarogram formula residual chlorine sensor of the concentration of residual chlorines such as the chlorine that contains in the determined water of polarography determination, hypochlorous acid, hypochlorite ion.
Background technology
At present, the water that circulating bathing pool or swimming pool etc. use drops into medicaments such as sodium hypochlorite, carries out sterilizing.Under the high situation of the concentration of residual chlorine of this water, because probably can bring bad influence to human body, so, the amount of residual chlorine measured with the hypochlorous acid concentration measurement apparatus that uses DPD method or polarography, and monitor, make the amount of residual chlorine become the concentration of residual chlorine of regulation.
Usually, shown in patent documentation 1, the determinator of the concentration of residual chlorine of polarography possess the effect utmost point, to the utmost point and be used for the fixing voltage that keeps putting on the effect utmost point with reference to the utmost point, these utmost points be impregnated in the determined water, be the assigned voltage of benchmark to the effect utmost point and current potential that interpolar is applied with the reference utmost point, and be determined at these effect utmost points and to the electric current of interpolar circulation.For example, for the effect utmost point under the situation that has applied assigned voltage with to the mensuration current value of interpolar circulation, have the calibration curve data of hypochlorous acid concentration in advance, with the mensuration current value of practical measurement and this data relatively, obtain hypochlorous acid concentration.
Figure 14 represents one of these calibration curve data example.In the figure, transverse axis is the concentration of residual chlorine X of hypochlorous acid etc., and the longitudinal axis when having applied assigned voltage to the effect utmost point with to interpolar, is measured Y=A for according to measuring the detection voltage Y that current value obtains in advance
1X+A
2Formula (computing parameter) is set up.And, because from measuring current value Y as can be known, so, by this Y and use above-mentioned formula (computing parameter) computing concentration of residual chlorine X.
In the mensuration of the concentration of residual chlorine of this polarography, applying with reference to the assigned voltage of benchmark very to the effect utmost point with to interpolar, under this situation, forming steady state with reference to the current potential of the utmost point in its speciality.Therefore, the potential setting of the effect utmost point can be the regulation current potential.At this moment, by being determined at the effect utmost point and electric current to interpolar circulation, can infer inferior chlorine chlorinity in this determined water according to the calibration curve data.
Patent documentation 1:(Japan) spy opens the 2011-7508 communique
Non-patent literature 1: goods, materials and equipments and material 115(1999) No.6 paper " not the utilization of homogenizing reaction cause the dissolving of gold and separating out of golden micropowder "
At this, Fig. 7 and Fig. 9 represent the existing effect utmost point 100,101 example.The effect utmost point 100,101 for example is made of gold as conductive material.Under this situation, the effect utmost point 100 is the formation of the conductive material (gold) 103 of the ring-type of reeling around the columned base material 102 that is made of insulators such as synthetic resin, under the situation of the effect utmost point 101, it is made of columned conductive material (gold) 103.
On the other hand, to impregnated in the effect utmost point in the determined water and interpolar being applied under the voltage condition, generate incrustation scale etc. at each electrode surface, therefore, regular switch polarity is carried out peace and quietization on its surface, but since this polarity switch, under the situation about using between for a long time, the conductive material of the effect utmost point can dissolve.As Figure 11, shown in Figure 12, this electrode dissolves more high, the more rapid trend (gold can dissolve for example with reference to non-patent literature 1 under the situation that chloride ion exists under sour environment) of chloride ion concentration in the more big or determined water of current value with circulation.
Therefore, under the situation of the above-mentioned effect utmost point 100, as among Fig. 8 from left to right shown in, conductive material 103 becomes not to be had or diminishes.In addition, under the situation of the above-mentioned effect utmost point 101, as among Figure 10 from left to right shown in, columned effect utmost point 101(conductive material) attenuate.Thus, the surface area of the conductive material 103 that contacts with determined water is that electrode surface area (area of detection) diminishes.
Figure 13 represents the area of detection situation of dwindling along with conductive material service time.And, because electrode reaction depends on its surface area, therefore, having the area that contacts with determined water when the conductive material of the formation effect utmost point like this is that electrode surface area is when diminishing, proportional with electrode surface area, measure current value and significantly reduce, the problem that sensitivity reduces.
Summary of the invention
The present invention proposes in order to solve the prior art problem, the polarogram formula residual chlorine sensor that its purpose is to provide a kind of timeliness of electrode surface area that can the reduction effect utmost point to change.
In order to solve above-mentioned problem, polarogram formula residual chlorine sensor of the present invention, act on the utmost point and the utmost point be impregnated in the determined water to the major general, acting on the utmost point and the electric current that interpolar is circulated by mensuration because of redox reaction, measure the concentration of residual chlorine in the determined water, it is characterized in that, the conductive material of the formation effect utmost point is with the area in the cross section of direction of principal axis quadrature in axial diverse location identical shape all, and cover with the mode insulated body that stays an axial end face or both ends of the surface, and an end face side be impregnated in the described determined water.
The polarogram formula residual chlorine sensor of second aspect on the basis of foregoing invention is characterized in that, insulator is the open insulativity housings in one or both ends, and conductive material is accommodated in this housing.
The polarogram formula residual chlorine sensor of the third aspect on the basis of above-mentioned first invention is characterized in that insulator is coated on conductive material.
The polarogram formula residual chlorine sensor of fourth aspect on the basis of above-mentioned each invention is characterized in that, the conductive material of the formation effect utmost point is gold.
The polarogram formula residual chlorine sensor of the 5th aspect on the basis of above-mentioned each invention, it is characterized in that, second conductive material different with this conductive material that also possesses the other end contact of an end face and conductive material, insulator also covers second conductive material, and, be determined at the effect utmost point and the electric current that interpolar is circulated via this second conductive material.
The polarogram formula residual chlorine sensor of the 6th aspect on the basis of above-mentioned each invention is characterized in that also possessing: the effect utmost point, described to the utmost point, with reference to the utmost point, and it impregnated in the determined water; Determination part, it is that benchmark applies assigned voltage to the effect utmost point with this current potential with reference to the utmost point, and is determined at the current value to the utmost point and the circulation of effect interpolar; Operational part, it keeps the calibration curve data of the relation of the current value under expression concentration of residual chlorine and the assigned voltage, based on these calibration curve data, and according to the mensuration current value by determination part at determined water, obtains concentration of residual chlorine and with its output.
The polarogram formula residual chlorine sensor of the 7th aspect on basis of above-mentioned each invention is characterized in that, switches the polarity of the voltage that applies to the effect utmost point with to interpolar.
According to the present invention, in polarogram formula residual chlorine sensor, act on the utmost point and the utmost point be impregnated in the determined water to the major general, by measuring owing to redox reaction and at the electric current that acts on the utmost point and interpolar is circulated, measure the concentration of residual chlorine in the determined water, it constitutes, the conductive material of the formation effect utmost point is with the area in the cross section of direction of principal axis quadrature in axial diverse location identical shape all, and to stay the mode insulated body covering at an axial end face or two ends, and an end face side be impregnated in the described determined water, therefore, be that the cross section of the conductive material that exposes of housing or coated insulator is to become the detection faces that impregnated in the determined water from insulator, and the area in this cross section does not change at direction of principal axis.
Thus, even will put on the effect utmost point and the polarity of the voltage of interpolar is switched and used for a long time, and conductive materials such as gold are dissolved under the situation in the determined water, also can eliminate the variation with the electrodes in contact surface area of determined water, or it is suppressed to Min., can realize the mensuration of stable concentration of residual chlorine for a long time.
In this case, invention as the 5th aspect, as if with this conductive material different second conductive material of an end face with the other end contact of the conductive material of the effect utmost point is set, and also cover second conductive material by insulator, be determined at the electric current that acts on the utmost point and interpolar is circulated via second conductive material, then can dissolve the variation of the mensuration current value that second conductive material contacts with determined water, the life-span of the detection effect utmost point by conductive material.
In addition, as described in the 6th aspect, if form so-called three electric pole types, then can realize the mensuration of more high-precision high residue cl concn.
Description of drawings
Fig. 1 is the pie graph of the polarogram formula residual chlorine sensor of one of the present invention embodiment;
Fig. 2 is the stereographic map of one of effect utmost point embodiment of the polarogram formula residual chlorine sensor of Fig. 1;
Fig. 3 is the figure that the timeliness of the effect utmost point of presentation graphs 2 changes;
Fig. 4 is the stereographic map of other embodiment of the effect utmost point of the polarogram formula residual chlorine sensor of Fig. 1;
Fig. 5 is the figure that the timeliness of the effect utmost point of presentation graphs 4 changes;
Fig. 6 is the figure that the timeliness of electrode surface area (area of detection) of the effect utmost point of presentation graphs 2 changes;
Fig. 7 is the stereographic map of the existing effect utmost point;
Fig. 8 is the figure that the timeliness of the effect utmost point of presentation graphs 7 changes;
Fig. 9 is the stereographic map of other the existing effect utmost point;
Figure 10 is the figure that the timeliness of the effect utmost point of presentation graphs 9 changes;
Figure 11 is that explanation is at the figure of the relation of the dissolving of the current value that acts on utmost point circulation and conductive material;
Figure 12 is the chloride ion concentration of explanation in the determined water and the figure of the relation of the dissolving of conductive material;
Figure 13 is the figure that the timeliness of the electrode area (area of detection) of the existing effect of the expression utmost point changes;
Figure 14 is the figure of one of the calibration curve data (computing parameter) of expression polarogram formula residual chlorine sensor example.
Symbol description
1 polarogram formula residual chlorine sensor
The 2 effect utmost points
4 pairs of utmost points
6 with reference to the utmost point
8 determined water
12 determination parts
14 operational parts
16 conductive materials
17 housings
18 second conductive materials
19 lead-in wires
Embodiment
Below, describe in detail based on the polarogram formula residual chlorine sensor 1 of accompanying drawing to one of the present invention embodiment.In Fig. 1, the polarogram formula residual chlorine sensor 1 of embodiment is for example to possess as impregnated in the water in the swimming pool for example at determined water 8(that container 10 stores) electrode the effect utmost point 2, to the utmost point 4, and with reference to three electric pole type polarogram formula residual chlorine sensors of the utmost point 6, and possess determination part 12 and operational part 14 and constitute.
Afterwards the effect utmost point 2 is described in detail, the conductive material of the formation effect utmost point 2 uses gold in an embodiment.The utmost point 4 is made of platinum in an embodiment, is constituted by silver, silver chloride in an embodiment with reference to the utmost point 6.In addition, in addition the conductive material as the effect utmost point 2 also can use platinum, also can use carbon fiber etc. to the utmost point 4.
Be that electrode potential in the determined water is constant with reference to the utmost point 6 in its characteristic.When this current potential with reference to the utmost point 6 is standard hydrogen electrode SHF, in saturated KCl aqueous solution be+0.199Vvs.SHE.This electrode reaction with reference to the utmost point 6 is represented with following note chemical formula A.
Chemical equation A AgCl+e
-← → Ag+Cl
-
In addition, in residual chlorine sensor 1, by the polarogram mode, and the relation of the electric current (reduction current) that obtains according to the reduction reaction (shown in chemical equation B, the C) by the effect utmost point 2 that is mainly hypochlorous acid, hypochlorite ion contained in the determined water 8 and voltage is measured the concentration of hypochlorous acid etc.
Chemical equation B ClO
-+ H
2O+2e
-→ Cl
-+ 2OH
-
Chemical equation C HOCl
-+ 2e
-→ Cl
-+ OH
-
In addition, this applies assigned voltage and carries out under the situation of concentration determination in execution, adheres to the incrustation scale that generates in the determined water 8 at the effect utmost point 2 and to the back side of the utmost point 4.In order to be removed, determination part 12 regularly switches to the effect utmost point 2 and to the polarity of 4 voltages that apply of the utmost point.
In addition, as sensor, except as shown in Figure 1 each electrode being impregnated in the determined water 8, also each electrode can be configured at substrate/distribution, it is installed on the logical stream of determined current, each electrode 2,4,6 is contacted with determined water.
Below, use Fig. 2～Fig. 6 that the structure of the effect utmost point 2 that uses is in the present invention described.The effect utmost point 2 of embodiment utilizes the conductive material 16 that is formed by gold and the housing 17 that forms with the insulators such as hard resin of taking in this effect utmost point to constitute.Under this situation, conductive material 16 is cylindric, and it forms under the situation about cutting off in the optional position different with direction of principal axis with the area in the cross section (cross section of prescribed level direction among Fig. 2) of direction of principal axis (above-below direction among Fig. 2) quadrature of this cylinder all identical shape.
In addition, housing 17 is the cylindric of both ends open, an end face 16A who exposes conductive material 16 with the opening from an end of this housing 17, expose the mode of the other end of conductive material 16 from the opening of the other end of housing 17, the side face of remaining other conductive material 16 is covered by housing 17.And, constitute at the other end of this conductive material 16 distribution and connect substrate or lead-in wire, an end face side of conductive material 16 be impregnated in the determined water 8, only this end face 16A contacts with determined water 8.
By above formation, when applying assigned voltage and carry out the mensuration of concentration of residual chlorine to the reference utmost point 2 with to 4 of the utmost points by determination part 12, as mentioned above, dissolve in determined water 8 with reference to the conductive material (gold) 16 of the utmost point 2.But, with reference to the conductive material 16 of the utmost point 2 only one end 16A contact with determined water 8, therefore, dissolving only causes at this end face 16A, as shown in Figure 3, forms the shape that an end face 16A retreats to other end direction (direction of principal axis) from an end of housing 17.
At this moment, as mentioned above, form at axial different cross section also identical with the area in the cross section of the direction of principal axis quadrature of conductive material 16, therefore, if the whole face that is dissolved in of an end face 16A roughly takes place equably, even then the dissolving from Fig. 3 the left side carry out to the right, an end face 16A(who contacts with determined water 8 also comprises the cross section) area be that area of detection (electrode surface area) does not change yet.
Fig. 6 represents that the timeliness of the area of detection (area of an end face 16A) of the effect utmost point 2 of embodiment changes.At first, because the rough surface of an end face 16A, thereby its surface area increases a little, but show certain value afterwards.Therefore, if use the effect utmost point 2 of embodiment, do not change substantially even then measure long-term use of current value yet.
Like this, the conductive material 16 of the formation effect utmost point 2 is with the area in the cross section of direction of principal axis quadrature at direction of principal axis diverse location also identical shape, stay axial both ends of the surface, by housing 17(insulator) cover, one end face 16A side be impregnated in determined water 8, therefore, the cross section of the conductive material 16 that exposes from housing 17 is the detection faces that impregnated in determined water 8, and the area in this cross section does not change at direction of principal axis.
Thus, even switching to the effect utmost point 2 with to the polarity of 4 voltages that apply of the utmost point and use for a long time, under the situation that conductive material 16 dissolves in determined water 8, also can eliminate the variation with determined water 8 electrodes in contact surface areas, or it is suppressed at Min., can realize the mensuration of stable concentration of residual chlorine for a long time.
Below, Fig. 4 represents other embodiment of the effect utmost point 2 of the present invention.In addition, with Fig. 2 in the content of identical symbolic representation also identical.An end face 16A who under this situation also is conductive material (gold) 16 contacts with determined water 8.Conductive material 16 is positioned at the open side of an end of housing 17, and this end face 16A contacts with determined water 8.But, in the other end of conductive material 16 side second conductive materials 18 such as silver different with conductive material 16 being set, this end face contacts with the other end of conductive material 16.In addition, housing 17 also covers the side face of this second conductive material 18 continuously, and expose the other end of second conductive material 18, connects lead-in wire 19 at this, measures electric current.
According to this formation, conductive material 16 is as dissolving like that shown in from the left side to the right side among Fig. 5, when second conductive material 18 contacts with determined water 8, the mensuration current value changes, therefore, by detecting the variation that this measures current value by determination part 12, life-span that can the detection effect utmost point 2.
In addition, in the various embodiments described above, with the both ends of the surface opening of housing 17, the both ends of the surface of conductive material 16 are exposed, but also can for example only be exposed an end face 16A, the other end is covered (obstruction).In this case, connect the other end of housing 17, will go between and insert in the housing 17, and be connected with conductive material 16 or second conductive material 18.
In addition, in an embodiment, form housing 17 as insulator, conductive material 16 or 18 is accommodated in shape in the housing 17, but is not limited thereto, also can stay an end face or both ends of the surface, at insulators such as side face coating acryl resins.
And, in an embodiment, describing the present invention by so-called three electric pole type polarogram formula residual chlorine sensors, but be not limited thereto, the present invention has only the effect utmost point and also effective to the polarogram formula residual chlorine sensor of the utmost point to not using with reference to the utmost point.
Claims (7)
1. polarogram formula residual chlorine sensor acts on the utmost point and the utmost point be impregnated in the determined water to the major general, by measure because of redox reaction at the described effect utmost point and electric current to the interpolar circulation, measure the concentration of residual chlorine in the described determined water, it is characterized in that,
The conductive material that constitutes the described effect utmost point is with the area in the cross section of direction of principal axis quadrature in described axial diverse location identical shape all, and cover with the mode insulated body that stays a described axial end face or both ends of the surface, and a described end face side be impregnated in the described determined water.
2. polarogram formula residual chlorine sensor as claimed in claim 1 is characterized in that,
Described insulator is the open insulativity housings in one or both ends, and described conductive material is accommodated in this housing.
3. polarogram formula residual chlorine sensor as claimed in claim 1 is characterized in that,
Described insulator is coated on described conductive material.
4. as each described polarogram formula residual chlorine sensor in the claim 1～3, it is characterized in that,
The conductive material that constitutes the described effect utmost point is gold.
5. as each described polarogram formula residual chlorine sensor in the claim 1～4, it is characterized in that,
Second conductive material different with this conductive material that also possesses the other end contact of an end face and described conductive material, described insulator also covers described second conductive material, and, be determined at the described effect utmost point and the electric current that interpolar is circulated via this second conductive material.
6. as each described polarogram formula residual chlorine sensor in the claim 1～5, it is characterized in that,
Also possess:
The described effect utmost point, described to the utmost point, with reference to the utmost point, it impregnated in the described determined water;
Determination part, it is that benchmark applies assigned voltage to the described effect utmost point with this current potential with reference to the utmost point, and is determined at described current value to the utmost point and the circulation of described effect interpolar;
Operational part, it keeps the calibration curve data of the relation of the current value under expression concentration of residual chlorine and the described assigned voltage, based on these calibration curve data, and according to the mensuration current value of being measured by described determination part at described determined water, obtain concentration of residual chlorine and with its output.
7. as each described polarogram formula residual chlorine sensor in the claim 1～6, it is characterized in that,
Switching is to the polarity of the described effect utmost point and the described voltage that interpolar is applied.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-286127 | 2011-12-27 | ||
| JP2011286127A JP5935037B2 (en) | 2011-12-27 | 2011-12-27 | Polarographic residual chlorine sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103185742A true CN103185742A (en) | 2013-07-03 |
Family
ID=48677021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210574488XA Pending CN103185742A (en) | 2011-12-27 | 2012-12-26 | Polarographic residual chlorine sensor |
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| Country | Link |
|---|---|
| JP (1) | JP5935037B2 (en) |
| KR (1) | KR20130075686A (en) |
| CN (1) | CN103185742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977393A (en) * | 2015-06-29 | 2015-10-14 | 青岛双瑞海洋环境工程股份有限公司 | Online effective chlorine detector and detection method for ship ballast water treatment system |
| CN110006964A (en) * | 2019-04-11 | 2019-07-12 | 厦门英仕卫浴有限公司 | A kind of chlorine residue detection method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001281200A (en) * | 2000-03-31 | 2001-10-10 | Akifumi Yamada | Measuring electrode for free residual chlorine and measuring method using it |
| JP3771851B2 (en) * | 2002-02-22 | 2006-04-26 | エフアイエス株式会社 | Water quality measuring device |
| JP3504939B2 (en) * | 2002-04-04 | 2004-03-08 | 理工協産株式会社 | Simultaneous analysis of peracetic acid and hydrogen peroxide |
| JP4085821B2 (en) * | 2003-01-23 | 2008-05-14 | 富士電機リテイルシステムズ株式会社 | Chlorine concentration controller |
-
2011
- 2011-12-27 JP JP2011286127A patent/JP5935037B2/en active Active
-
2012
- 2012-12-26 KR KR1020120152836A patent/KR20130075686A/en not_active Application Discontinuation
- 2012-12-26 CN CN201210574488XA patent/CN103185742A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977393A (en) * | 2015-06-29 | 2015-10-14 | 青岛双瑞海洋环境工程股份有限公司 | Online effective chlorine detector and detection method for ship ballast water treatment system |
| CN104977393B (en) * | 2015-06-29 | 2016-11-30 | 青岛双瑞海洋环境工程股份有限公司 | A kind of ship ballast water treatment system online effective chlorine detector and detection method |
| CN110006964A (en) * | 2019-04-11 | 2019-07-12 | 厦门英仕卫浴有限公司 | A kind of chlorine residue detection method |
| CN110006964B (en) * | 2019-04-11 | 2021-10-12 | 厦门英仕卫浴有限公司 | Residual chlorine detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5935037B2 (en) | 2016-06-15 |
| KR20130075686A (en) | 2013-07-05 |
| JP2013134206A (en) | 2013-07-08 |
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Application publication date: 20130703 |