JPH0328366Y2 - - Google Patents
Info
- Publication number
- JPH0328366Y2 JPH0328366Y2 JP9517083U JP9517083U JPH0328366Y2 JP H0328366 Y2 JPH0328366 Y2 JP H0328366Y2 JP 9517083 U JP9517083 U JP 9517083U JP 9517083 U JP9517083 U JP 9517083U JP H0328366 Y2 JPH0328366 Y2 JP H0328366Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid junction
- junction member
- electrolyte solution
- present
- reference electrode
- 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
- 239000007788 liquid Substances 0.000 claims description 32
- 239000008151 electrolyte solution Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
【考案の詳細な説明】
本考案は、高温高圧水中での金属体の電位測定
などに用いられる照合電極における塩橋を形成す
る液絡構造に関する。[Detailed Description of the Invention] The present invention relates to a liquid junction structure that forms a salt bridge in a reference electrode used for measuring the potential of a metal body in high-temperature, high-pressure water.
このような照合電極の液絡構造は、従来から電
解質溶液が充填された管路内に多孔質材料から成
る液絡部材が介在されている。この液絡部材の下
端部を気泡によつて覆われると、塩橋が遮断され
ることになり、電位の測定が不可能になつてしま
う。 Conventionally, in the liquid junction structure of such a reference electrode, a liquid junction member made of a porous material is interposed in a conduit filled with an electrolyte solution. If the lower end of this liquid junction member is covered with air bubbles, the salt bridge will be blocked, making it impossible to measure the potential.
本考案の目的は、塩橋を気泡によつて遮断する
ことなく形成するようにした照合電極の液絡構造
を提供することである。 An object of the present invention is to provide a liquid junction structure for a reference electrode in which a salt bridge is formed without being blocked by air bubbles.
第１図は、本考案の一実施例の断面図であり、
銀、塩化銀照合電極を示す。ケース２内にはKCl
から成る電解質溶液３が貯留されており、この電
解質溶液３には電極棒４が浸漬される。電極棒４
はAgから成る棒状体の外周にAgClのコーテイン
グが施されて構成される。ケース２の下部には管
体５が連通しており、この管体５には管軸方向に
間隔をあけて液絡部材６，７が介在されている。
液絡部材６，７は、多孔質材料、たとえばジルコ
ニア、アルミナなどのセラミツク、杉または桐な
どの木から成る。液絡部材６，７間において、管
体５内にはKClである電解質溶液８が充填され
る。この液絡部材６，７によつて電解質溶液３，
８が流失することが防がれるとともに、塩橋が形
成される。 FIG. 1 is a sectional view of an embodiment of the present invention,
Silver, silver chloride reference electrodes are shown. KCl in case 2
An electrolyte solution 3 consisting of is stored, and an electrode rod 4 is immersed in this electrolyte solution 3. Electrode rod 4
is constructed by coating the outer circumference of a rod-shaped body made of Ag with AgCl. A tube body 5 communicates with the lower part of the case 2, and liquid junction members 6 and 7 are interposed in the tube body 5 at intervals in the tube axis direction.
The liquid junction members 6 and 7 are made of a porous material, such as ceramic such as zirconia or alumina, or wood such as cedar or paulownia. Between the liquid junction members 6 and 7, the tube body 5 is filled with an electrolyte solution 8, which is KCl. The electrolyte solution 3,
8 is prevented from being washed away and a salt bridge is formed.
たとえば高温高圧水中の金属体の電位を測定す
るには、電極棒４は直流電圧計を介して水中の金
属体に接続され、しかるに液絡部材７は水中に浸
漬される。 For example, to measure the potential of a metal body in high-temperature, high-pressure water, the electrode rod 4 is connected to the metal body in the water via a DC voltmeter, and the liquid junction member 7 is immersed in the water.
本考案に従えば、液絡部材６，７の少なくとも
下方に臨む端部６ａ，７ａは先細状に形成され
る。管体５および液絡部材６，７の軸直角断面は
円形であり、その下端部６ａ，７ａは丸みをおび
た円錐形に形成されている。したがつて液絡部材
７を介して液絡部材６，７間に電解質溶液８を充
填する際に気泡９が管体５内に存在したとして
も、その気泡９は液絡部材６，７の下端部６ａ，
７ａの半径方向外周付近に存在する。したがつて
下端部６ａ，７ａの先端は、電解質溶液８に常に
接触することができる。こうして塩橋が気泡９に
よつて遮断されることが避けられる。 According to the present invention, at least the downwardly facing ends 6a, 7a of the liquid junction members 6, 7 are formed in a tapered shape. The tube body 5 and the liquid junction members 6, 7 have circular cross sections perpendicular to the axis, and their lower ends 6a, 7a are formed into rounded conical shapes. Therefore, even if air bubbles 9 are present in the tube body 5 when filling the electrolyte solution 8 between the liquid junction members 6 and 7 via the liquid junction member 7, the air bubbles 9 will be removed from the liquid junction members 6 and 7. lower end 6a,
It exists near the radial outer circumference of 7a. Therefore, the tips of the lower ends 6a, 7a can always be in contact with the electrolyte solution 8. In this way it is avoided that the salt bridges are blocked by air bubbles 9.
第２図〜第８図は、本考案の他の各実施例の一
部の断面図である。これらの各実施例において前
述の実施例に対応する部分には同一の参照符を付
す。第２図の実施例では、液絡部材１０の下端部
１０ａは、その液絡部材１０の軸線に交差する平
面で切断された構成を有する。液絡部材２３の下
端部２３ａは円錐状である。また第３図示の実施
例では、液絡部材１１，１２の端部は円錐状とな
つている。第４図示の実施例では、液絡部材１３
の下端部１３ａはその半径方向内方の部分で円錐
形となつている。液絡部材１４の下端部１４ａは
その周方向の一部のみが鋭く形成されている。第
５図の実施例では、液絡部材１５の下端部１５ａ
は小径となつており、もう一つの液絡部材１６の
下端部１６ａは半円弧状の断面を有して下方に延
びる。第６図示の実施例では液絡部材１７の下端
部１７ａは半円球状であり、もう一つの液絡部材
１８の下端部１８ａもまた半円球状である。第７
図示の実施例では、液絡部材１９，２０の下端部
１９ａ，２０ａは円錐台となつている。第８図示
の実施例では、液絡部材２１の下端部２１ａは下
方に向けて円錐台形に先細状に形成されている。
もう一つの液絡部材２２との間には前述のように
電解質溶液８が充填されている。 2 to 8 are partial sectional views of other embodiments of the present invention. In each of these embodiments, parts corresponding to those in the previous embodiment are given the same reference numerals. In the embodiment shown in FIG. 2, the lower end 10a of the liquid junction member 10 is cut along a plane that intersects the axis of the liquid junction member 10. In the embodiment shown in FIG. The lower end 23a of the liquid junction member 23 has a conical shape. Further, in the embodiment shown in the third figure, the ends of the liquid junction members 11 and 12 are conical. In the embodiment shown in the fourth figure, the liquid junction member 13
The lower end 13a has a conical shape at its radially inner portion. The lower end portion 14a of the liquid junction member 14 is sharply formed only in a portion thereof in the circumferential direction. In the embodiment shown in FIG. 5, the lower end 15a of the liquid junction member 15
has a small diameter, and the lower end 16a of the other liquid junction member 16 has a semicircular arc cross section and extends downward. In the embodiment shown in FIG. 6, the lower end 17a of the liquid junction member 17 is semicircular and the lower end 18a of the other liquid junction member 18 is also semispherical. 7th
In the illustrated embodiment, the lower ends 19a, 20a of the liquid junction members 19, 20 are truncated cones. In the embodiment shown in FIG. 8, the lower end 21a of the liquid junction member 21 is tapered downward into a truncated cone shape.
The space between the liquid junction member 22 and the other liquid junction member 22 is filled with the electrolyte solution 8 as described above.
以上のように本考案によれば、液絡部材の少な
くとも下方に臨む端部は先細状に形成されている
ので、気泡によつて塩橋が遮断されてしまうこと
が防がれる。 As described above, according to the present invention, since at least the downwardly facing end of the liquid junction member is formed in a tapered shape, the salt bridge is prevented from being blocked by air bubbles.
第１図は本考案の一実施例の断面図、第２図〜
第８図は本考案の他の各実施例の断面図である。
２……ケース、３，８……電解質溶液、４……
電極棒、５……管体、６，７，１０〜２３……液
絡部材。
Figure 1 is a sectional view of an embodiment of the present invention, Figures 2-
FIG. 8 is a sectional view of other embodiments of the present invention. 2... Case, 3, 8... Electrolyte solution, 4...
Electrode rod, 5... tube body, 6, 7, 10-23... liquid junction member.
Claims (1)
された管体内にその管軸方向に間隔をあけて、多
孔質材料から成る液絡部材が介在され、これらの
液絡部材の対向する端部のうち少なくとも下方に
臨む端部は先細状に形成されていることを特徴と
する照合電極の液絡構造。 A liquid junction member made of a porous material is interposed at intervals in the tube axis direction in a tube communicating with a case storing an electrolyte solution of the reference electrode. A liquid junction structure of a reference electrode, characterized in that at least an end facing downward is formed into a tapered shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9517083U JPS603464U (en) | 1983-06-20 | 1983-06-20 | Liquid junction structure of reference electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9517083U JPS603464U (en) | 1983-06-20 | 1983-06-20 | Liquid junction structure of reference electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS603464U JPS603464U (en) | 1985-01-11 |
| JPH0328366Y2 true JPH0328366Y2 (en) | 1991-06-18 |
Family
ID=30227400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9517083U Granted JPS603464U (en) | 1983-06-20 | 1983-06-20 | Liquid junction structure of reference electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603464U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048366Y2 (en) * | 1986-01-30 | 1992-03-03 | ||
| JP6096682B2 (en) * | 2014-01-20 | 2017-03-15 | 東京瓦斯株式会社 | Pitting potential monitoring reference electrode, pitting potential monitoring device |
| CN106415257B (en) * | 2014-06-20 | 2019-07-05 | 株式会社堀场制作所 | Reference electrode |
| WO2018110081A1 (en) * | 2016-12-12 | 2018-06-21 | 株式会社堀場製作所 | Reference electrode unit |
-
1983
- 1983-06-20 JP JP9517083U patent/JPS603464U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS603464U (en) | 1985-01-11 |
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