JPH0329741Y2 - - Google Patents
Info
- Publication number
- JPH0329741Y2 JPH0329741Y2 JP4689984U JP4689984U JPH0329741Y2 JP H0329741 Y2 JPH0329741 Y2 JP H0329741Y2 JP 4689984 U JP4689984 U JP 4689984U JP 4689984 U JP4689984 U JP 4689984U JP H0329741 Y2 JPH0329741 Y2 JP H0329741Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- ceramic
- electrode
- measured
- glass 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 52
- 239000011521 glass Substances 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Sampling And Sample Adjustment (AREA)
- Secondary Cells (AREA)
Description
【考案の詳細な説明】
本考案は、一端をセラミツクで密閉した筒体に
フアイバー束を収納した液絡部を備えた複合ガラ
ス電極に関する。[Detailed Description of the Invention] The present invention relates to a composite glass electrode having a liquid junction in which a fiber bundle is housed in a cylindrical body whose one end is sealed with ceramic.
従来から、例えば、第１図イに示すPH測定用の
複合ガラス電極がある。複合ガラス電極は、電極
保護管１内に設置するガラス電極２と、電極保護
管１内に収納する比較電極内部液４、該内部液４
内に設置する比較電極内部電極５及び内部液４と
被測定液（図示せず）を接触させるセラミツク製
液絡部６から成る比較電極７とを有する。電極保
護管１は、側壁に比較電極内部液補給口８を形成
した筒体の先端近傍を、液絡部挿通口９及びガラ
ス電極挿通口１０を形成したシリコン製ガスケツ
ト１１を固着して壁を構成すると共に（液絡部６
及びガラス電極２を挿通した状態で筒体の内と外
を隔離する壁となる）、後端を、ガラス電極２及
び内部電極５の夫々の引出し線を水密的に挿通す
るキヤツプ１２で密閉し、比較電極内部液４等を
収納する室を構成している。液絡部６は、第１図
ロに示すように、ガスケツト９の端面から被測定
液側にｘだけ突出させて設置し、汚染による交換
操作を容易にし得る構成となつている。 Conventionally, for example, there has been a composite glass electrode for pH measurement as shown in FIG. 1A. The composite glass electrode includes a glass electrode 2 installed in an electrode protection tube 1, a comparison electrode internal liquid 4 housed in the electrode protection tube 1, and the internal liquid 4.
The comparative electrode 7 includes an internal electrode 5 and a ceramic liquid junction 6 that brings the internal liquid 4 into contact with the liquid to be measured (not shown). The electrode protection tube 1 is constructed by fixing a silicone gasket 11, which has a liquid junction insertion hole 9 and a glass electrode insertion hole 10, to the vicinity of the tip of a cylindrical body with a reference electrode internal liquid supply port 8 formed on the side wall. (liquid junction 6
and a wall that separates the inside and outside of the cylindrical body with the glass electrode 2 inserted therein), and the rear end is sealed with a cap 12 through which the lead wires of the glass electrode 2 and the internal electrode 5 are inserted in a watertight manner. , and constitutes a chamber for storing the reference electrode internal liquid 4 and the like. As shown in FIG. 1B, the liquid junction part 6 is installed so as to protrude by an amount x from the end face of the gasket 9 toward the liquid to be measured, and is configured to facilitate replacement operations due to contamination.
以上の構成において、複合ガラス電極の先端を
被測定液に潜漬すると、液絡部６の気孔から内部
液４が被測定側へ流出する。これにより、液絡部
６を介して内部液４と被測定液が接触し、液絡部
１１における液間電位差ｅは、被測定液のPH値に
無関係な電位差を示す。 In the above configuration, when the tip of the composite glass electrode is immersed in the liquid to be measured, the internal liquid 4 flows out from the pores of the liquid junction 6 to the side to be measured. As a result, the internal liquid 4 and the liquid to be measured come into contact via the liquid junction 6, and the liquid potential difference e at the liquid junction 11 shows a potential difference that is unrelated to the PH value of the liquid to be measured.
しかし、従来の複合ガラス電極にあつては、第
１図ハに示すように液絡部６のガスケツト１１か
らの突き出し長さｘによつて液間電位差ｅが変る
ため（液絡部において、被測定液のセラミツク内
への拡散と、内部液のセラミツク内から被測定液
側への拡散が生じているが、突き出し長さｘによ
つて夫々の拡散状態が異なり、液絡部の突き出し
部内の内部液の濃度分布状態が異なる）、液絡部
６の交換する度に電極の検出特性が変るという問
題がある。 However, in the case of a conventional composite glass electrode, as shown in FIG. Diffusion of the measured liquid into the ceramic and diffusion of the internal liquid from the ceramic to the measured liquid side occur, but each diffusion state differs depending on the protrusion length x, and (the concentration distribution state of the internal liquid is different), and the detection characteristics of the electrodes change each time the liquid junction 6 is replaced.
本考案は、かゝる点に鑑みてなされたものであ
り、その目的は、液絡部交換時の操作性を損こと
なく、特性を安定させた複合ガラス電極を提供す
るにある。 The present invention has been made in view of the above, and its purpose is to provide a composite glass electrode with stable characteristics without impairing operability when replacing the liquid junction.
上記目的を達成する本考案の複合ガラス電極
は、所定の挿入口にて着脱自在に設置する液絡部
を備えた複合ガラス電極において、前記液部が、
一端をセラミツクで密閉した筒体と、一端を前記
筒体から突出させて前記筒体に収納するフアイバ
ー束を備え、前記セラミツク側を被測定液側に突
出させて前記挿入口に設置される構成となつてい
る。 A composite glass electrode of the present invention that achieves the above object is a composite glass electrode equipped with a liquid junction part that is detachably installed at a predetermined insertion port, wherein the liquid part is
A structure comprising a cylinder whose one end is sealed with ceramic, and a fiber bundle whose one end protrudes from the cylinder and is housed in the cylinder, and is installed in the insertion port with the ceramic side protruding toward the liquid to be measured. It is becoming.
以下、図面を参照し本考案について説明する。 The present invention will be described below with reference to the drawings.
第２図イ及びロは、本考案の一実施例を示す構
成図である。第２図において、第１図と同一記号
は、同一意味で用いられているため、こゝでの説
明は省略する。第２図の実施例の特徴は、液絡部
１３が、第２図ロに示すように、一端１４を円盤
状のセラミツク１５で密閉したガラス製筒体１６
と、一端１７を筒体１６から突出させて筒体１６
に収納するナイロン製フアイバー束（繊維束）１
８とを備え、セラミツク側を被測定液側に突出さ
せて筒体１６を設置した点にある。又、セラミツ
ク１５の面は、筒体１６の端面１４と一致して固
着されている（夫々の面は同一面）。更に、フア
イバー束１８は、上下方向に直線的な流路を構成
し、気孔率が40〜70％を有している。 FIGS. 2A and 2B are configuration diagrams showing an embodiment of the present invention. In FIG. 2, the same symbols as in FIG. 1 are used with the same meanings, so their explanation will be omitted here. The feature of the embodiment shown in FIG. 2 is that the liquid junction 13 is made of a glass cylinder 16 whose one end 14 is sealed with a disc-shaped ceramic 15, as shown in FIG. 2B.
Then, the one end 17 is made to protrude from the cylindrical body 16 and the cylindrical body 16 is
Nylon fiber bundle (fiber bundle) stored in
8, and the cylindrical body 16 is installed with the ceramic side protruding toward the liquid to be measured side. Further, the surface of the ceramic 15 is fixed to coincide with the end surface 14 of the cylindrical body 16 (the respective surfaces are the same surface). Further, the fiber bundle 18 forms a straight flow path in the vertical direction and has a porosity of 40 to 70%.
以上の構成において、複合ガラス電極の先端を
被測定液に潜漬すると、内部液４がフアイバー束
１８の流路を通じてセラミツク１５の端面に安定
に供給される。セラミツク１５は、多孔質の孔を
介して被測定液に接触しているため、内部液４
は、その多孔質の孔から徐々に被測定液に流出す
る。ここで、セラミツク１５と筒体１６の端面１
４が同一面となつているため、セラミツク１５の
中心部と周辺部間の内部液の流出量に差がなく均
一な界面を形成する。従つて、液絡部１６がガス
ケツト４から突出しているにもかかわらず、液絡
部１３の液間電位差ｅは抑制され、安定する。
又、内部液の流出量が液絡部１３の突き出し長さ
ｘに無関係であるため、その突き出し長さを交換
時の操作性を勘案して決めることができ、交換操
作を容易にすることができる。 In the above configuration, when the tip of the composite glass electrode is immersed in the liquid to be measured, the internal liquid 4 is stably supplied to the end face of the ceramic 15 through the flow path of the fiber bundle 18. Since the ceramic 15 is in contact with the liquid to be measured through the porous pores, the internal liquid 4
gradually flows into the liquid to be measured through the porous pores. Here, the end face 1 of the ceramic 15 and the cylindrical body 16 is
4 are on the same surface, there is no difference in the amount of internal liquid flowing out between the center and the periphery of the ceramic 15, forming a uniform interface. Therefore, even though the liquid junction 16 protrudes from the gasket 4, the liquid junction potential difference e of the liquid junction 13 is suppressed and stabilized.
Furthermore, since the amount of internal liquid flowing out is unrelated to the protrusion length x of the liquid junction 13, the protrusion length can be determined taking into account the operability during replacement, making the replacement operation easier. can.
尚、上記実施例において、フアイバー束は、ナ
イロンで構成されているが、本考案は、これに限
定するものではなく、他の繊維、例えば、アクリ
ル、ポリエステル等であつてもよい。 In the above embodiment, the fiber bundle is made of nylon, but the present invention is not limited to this, and may be made of other fibers such as acrylic, polyester, etc.
以上、説明した通り、本考案の複合ガラス電極
によれば、一端をセラミツクで密閉した筒体にフ
アイバー束を収納した液絡部を備えるようにした
ため、液絡部交換時の操作性を損うことなく特性
を安定させることができる。 As explained above, according to the composite glass electrode of the present invention, since the liquid junction section in which the fiber bundle is housed is provided in a cylinder whose one end is sealed with ceramic, operability when replacing the liquid junction section is impaired. Characteristics can be stabilized without any problems.
第１図イ，ロ及びハは、従来例を示す構成図及
びその特性図、第２図イ及びロは、本考案の一実
施例を示す構成図である。
１……電極保護管、２……ガラス電極、４……
比較電極内部液、５……比較電極内部電極、７…
…比較電極、８……内部液補給口、９……液絡部
挿通口、１３……液絡部、１５……円盤状セラミ
ツク、１６……ガラス製筒体、１８……フアイバ
ー束。
FIGS. 1A, 1B, and 1C are block diagrams showing a conventional example and their characteristic diagrams, and FIGS. 2A and 2B are block diagrams showing an embodiment of the present invention. 1... Electrode protection tube, 2... Glass electrode, 4...
Comparative electrode internal liquid, 5...Comparative electrode internal electrode, 7...
... Reference electrode, 8 ... Internal liquid supply port, 9 ... Liquid junction insertion port, 13 ... Liquid junction, 15 ... Disc-shaped ceramic, 16 ... Glass cylinder, 18 ... Fiber bundle.
Claims (1)
備えた複合ガラス電極において、 前記液絡部が、一端をセラミツクで密閉した筒
体と、一端を前記筒体から突出させて前記筒体に
収納するフアイバー束を備え、前記セラミツク側
を被測定液側に突出させて前記挿入口に設置され
ることを特徴とする複合ガラス電極。[Claims for Utility Model Registration] A composite glass electrode including a liquid junction that is detachably installed at a predetermined insertion opening, wherein the liquid junction includes a cylinder whose one end is sealed with ceramic, and one end which is connected to the cylinder. 1. A composite glass electrode comprising a fiber bundle protruding from the body and housed in the cylindrical body, and installed in the insertion opening with the ceramic side protruding toward the liquid to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4689984U JPS60159362U (en) | 1984-03-30 | 1984-03-30 | composite glass electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4689984U JPS60159362U (en) | 1984-03-30 | 1984-03-30 | composite glass electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159362U JPS60159362U (en) | 1985-10-23 |
| JPH0329741Y2 true JPH0329741Y2 (en) | 1991-06-25 |
Family
ID=30561726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4689984U Granted JPS60159362U (en) | 1984-03-30 | 1984-03-30 | composite glass electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60159362U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048366Y2 (en) * | 1986-01-30 | 1992-03-03 | ||
| JP2003075392A (en) * | 2001-08-31 | 2003-03-12 | Horiba Ltd | Liquid junction member for reference electrode |
-
1984
- 1984-03-30 JP JP4689984U patent/JPS60159362U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60159362U (en) | 1985-10-23 |
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