JPS5833562Y2 - Sodium hypochlorite measuring device - Google Patents
Sodium hypochlorite measuring deviceInfo
- Publication number
- JPS5833562Y2 JPS5833562Y2 JP17265078U JP17265078U JPS5833562Y2 JP S5833562 Y2 JPS5833562 Y2 JP S5833562Y2 JP 17265078 U JP17265078 U JP 17265078U JP 17265078 U JP17265078 U JP 17265078U JP S5833562 Y2 JPS5833562 Y2 JP S5833562Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- indicator
- indicator electrode
- sodium hypochlorite
- counter
- 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.)
- Expired
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【考案の詳細な説明】
本考案は、電流測定法を用いて次亜塩素酸ソーダの濃度
を測定する次亜塩素酸ソーダ測定装置に関するものであ
る。[Detailed Description of the Invention] The present invention relates to a sodium hypochlorite measuring device that measures the concentration of sodium hypochlorite using an amperometric method.
次亜塩素酸ソーダ製造時においては、次亜塩素酸ソーダ
中を電解装置のもれ電流が流れている。During the production of sodium hypochlorite, leakage current from the electrolyzer flows through the sodium hypochlorite.
従来装置でこの状態の次亜塩素酸ソーダの濃度を測定し
ようとすると、もれ電流のため測定誤差が生ずる。If an attempt was made to measure the concentration of sodium hypochlorite in this state using a conventional device, a measurement error would occur due to leakage current.
また、従来装置においては、電極の洗浄が面倒であると
いう問題や、電極に加わる同相ノイズに弱いという問題
がある。Furthermore, conventional devices have the problem that cleaning the electrodes is troublesome and that they are susceptible to in-phase noise applied to the electrodes.
さらに、高濃度の次亜塩素酸ソーダ測定の場合、測定誤
差が大きいという問題がある。Furthermore, when measuring high concentrations of sodium hypochlorite, there is a problem in that the measurement error is large.
本考案の目的は、上記問題点を解決し、測定誤差が小さ
く洗浄が容易な次亜塩素酸ソーダ測定装置を提供するこ
とにある。An object of the present invention is to solve the above problems and provide a sodium hypochlorite measuring device that has small measurement errors and is easy to clean.
以下図面を用いて本考案を詳細に説明する。The present invention will be explained in detail below using the drawings.
図は本考案装置の１実施例を示す構成図である。The figure is a configuration diagram showing one embodiment of the device of the present invention.
図において、１は一定の曲率半径を有した湾曲板でなる
指示極、２は指示極１と同一曲率の湾曲板でなる参照電
極である。In the figure, 1 is an indicator electrode made of a curved plate with a constant radius of curvature, and 2 is a reference electrode made of a curved plate with the same curvature as the indicator electrode 1.
指示極１と参照電極２は対向している。Indicator electrode 1 and reference electrode 2 are opposed to each other.
なお、指示極１は白金で構成され、参照電極２は塩化銀
で構成されている。Note that the indicator electrode 1 is made of platinum, and the reference electrode 2 is made of silver chloride.
３，４は指示極１および参照電極２０両側に配置された
環状（指示極１とほぼ同一半径）の対極、５は円筒状の
絶縁体である。3 and 4 are annular counter electrodes (of approximately the same radius as the indicator electrode 1) disposed on both sides of the indicator electrode 1 and the reference electrode 20, and 5 is a cylindrical insulator.
対極３と対極４は短絡され、アース（接地）されている
。The counter electrode 3 and the counter electrode 4 are short-circuited and grounded.
また、対極３．４は白金又は塩化銀で構成さへ絶縁体５
は塩化ビニールやガラスで構成されている。Further, the counter electrode 3.4 is an insulator 5 made of platinum or silver chloride.
is made of vinyl chloride and glass.
絶縁体５の内壁には、指示極１．参照電極２および対極
３，４が固定されている。On the inner wall of the insulator 5, an indicator electrode 1. A reference electrode 2 and counter electrodes 3, 4 are fixed.
６は差動増幅器、７は基準の電圧を発生する電源、８は
電流計である。6 is a differential amplifier, 7 is a power supply that generates a reference voltage, and 8 is an ammeter.
電源７の出力電圧は差動増幅器６の非反転入力端子に与
えられている。The output voltage of the power supply 7 is applied to the non-inverting input terminal of the differential amplifier 6.
一方、指示極１・参照電極２間の電圧は差動増幅器６０
反転入力端子に与えられている。On the other hand, the voltage between the indicator electrode 1 and the reference electrode 2 is determined by the differential amplifier 60.
It is applied to the inverting input terminal.
差動増幅器６の出力端子は電流計８を介して対極３，４
に接続されている。The output terminal of the differential amplifier 6 is connected to the counter electrodes 3 and 4 via an ammeter 8.
It is connected to the.
差動増幅器６は制御回路として動作する。Differential amplifier 6 operates as a control circuit.
すなわち、指示極１・参照電極２間に電源７の出力電圧
に等しい電圧が生ずるように、指示極１・対極３，４間
に電流を流す。That is, a current is passed between the indicator electrode 1 and the counter electrodes 3 and 4 so that a voltage equal to the output voltage of the power source 7 is generated between the indicator electrode 1 and the reference electrode 2.
このときの電流計８の指示値は、従来装置と同様な原理
から、次亜塩素酸ソーダの濃度に対応している。The indicated value of the ammeter 8 at this time corresponds to the concentration of sodium hypochlorite based on the same principle as the conventional device.
この装置においては、対極３，４の電位が等しくなるよ
うに構成されているから、次亜塩素酸ソーダの製造時の
雰囲気であっても、円筒状絶縁体４内を電解装置のもれ
電流が流れることがない。Since this device is constructed so that the potentials of the counter electrodes 3 and 4 are equal, even in the atmosphere during the production of sodium hypochlorite, leakage current from the electrolytic device flows through the cylindrical insulator 4. never flows.
したがって、もれ電流に起因する測定誤差は生じない。Therefore, measurement errors due to leakage current do not occur.
筐た、電極１〜４の中心軸か一致するように絶縁体５内
に配置されているため、洗浄が容易である。Since the electrodes 1 to 4 are arranged in the insulator 5 so that their center axes coincide with each other, cleaning is easy.
また、対極３．４が接地されているため、同相ノイズに
よる測定誤差も生じない。Further, since the counter electrode 3.4 is grounded, measurement errors due to common mode noise do not occur.
さらに、指示極１と対極３，４とを結ぶ直線（絶縁体５
の中心軸）と直交するような位置関係で、指示極１と参
照電極２が対向しているため、参照電極２に生ずる電圧
の大きさは次亜塩素酸ソーダ内を流れる電流による影響
を受けなへしたがって、高濃度のため電解電流が多く流
れるような場合にトいても、精度の良い測定を行うこと
ができる。Furthermore, a straight line connecting the indicator electrode 1 and the counter electrodes 3 and 4 (the insulator 5
Since the indicator electrode 1 and the reference electrode 2 face each other in a positional relationship perpendicular to the central axis of the Therefore, even in cases where a large electrolytic current flows due to high concentration, highly accurate measurements can be made.
以上説明したように、本考案によれば、測定誤差が小さ
く、洗浄が容易な次亜塩素酸ソーダ測定装置を実現する
ことができる。As explained above, according to the present invention, it is possible to realize a sodium hypochlorite measuring device that has small measurement errors and is easy to clean.
図は本考案に係る次亜塩素酸ソータ″ｍｌ定装置の一実
施例を示す構成図である。
１・・・・・・指示極、２・・−・・参照電極、３，４
・・・・・・対極、５・・・・・・絶縁体、６・・・・
・・産動増幅器（制御回路）、７・・・・・・電源、８
・・・・・・電流計。The figure is a configuration diagram showing an embodiment of the hypochlorous acid sorter ml determination device according to the present invention. 1... Indicator electrode, 2... Reference electrode, 3, 4
... Counter electrode, 5 ... Insulator, 6 ...
...Industrial amplifier (control circuit), 7...Power supply, 8
・・・・・・Ammeter.
Claims (1)
示極と同一曲率半径の湾曲板でなり指示的に対向して配
置された参照電極と、この参照電極および前記指示極の
両側に配置され電気的に短絡された環状の一対の対極と
、この対極、前記指示極および前記参照電極が内壁に固
定された円筒状の絶縁体と、前記指示極・前記参照電極
間に一定電圧が生ずるように前記指示極・前記対極間に
電流を流す制御回路と、この制御回路の出力電流を検出
する電流検出手段と、前記対極の電位を一定に保つ手段
とを具備した次亜塩素酸ソーダ測定装置。An indicator electrode made of a curved plate with a constant radius of curvature, a reference electrode made of a curved plate with the same radius of curvature as the indicator electrode and arranged opposite to each other, and on both sides of the reference electrode and the indicator electrode. a pair of annular counter electrodes arranged and electrically short-circuited; a cylindrical insulator in which the counter electrodes, the indicator electrode and the reference electrode are fixed to an inner wall; and a constant voltage is applied between the indicator electrode and the reference electrode. sodium hypochlorite comprising: a control circuit for passing a current between the indicator electrode and the counter electrode so as to cause a current to flow between the indicator electrode and the counter electrode; current detection means for detecting the output current of the control circuit; and means for keeping the potential of the counter electrode constant. measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17265078U JPS5833562Y2 (en) | 1978-12-13 | 1978-12-13 | Sodium hypochlorite measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17265078U JPS5833562Y2 (en) | 1978-12-13 | 1978-12-13 | Sodium hypochlorite measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5588153U JPS5588153U (en) | 1980-06-18 |
| JPS5833562Y2 true JPS5833562Y2 (en) | 1983-07-27 |
Family
ID=29177630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17265078U Expired JPS5833562Y2 (en) | 1978-12-13 | 1978-12-13 | Sodium hypochlorite measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833562Y2 (en) |
-
1978
- 1978-12-13 JP JP17265078U patent/JPS5833562Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5588153U (en) | 1980-06-18 |
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