JPH0441328Y2 - - Google Patents
Info
- Publication number
- JPH0441328Y2 JPH0441328Y2 JP1984143292U JP14329284U JPH0441328Y2 JP H0441328 Y2 JPH0441328 Y2 JP H0441328Y2 JP 1984143292 U JP1984143292 U JP 1984143292U JP 14329284 U JP14329284 U JP 14329284U JP H0441328 Y2 JPH0441328 Y2 JP H0441328Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- permeable membrane
- housing
- gas permeable
- outer cylinder
- 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
- 239000012528 membrane Substances 0.000 claims description 60
- 239000007788 liquid Substances 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 36
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012775 heat-sealing material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【考案の詳細な説明】
考案の背景
〔技術分野〕
この考案は、混合ガスあるいは血液等の試料流
体中に含まれる、たとえば二酸化炭素、酸素等の
ガス濃度を検出測定するガス濃度測定用電極体に
関する。[Detailed explanation of the invention] Background of the invention [Technical field] This invention is an electrode body for gas concentration measurement that detects and measures the concentration of gases such as carbon dioxide and oxygen contained in mixed gases or sample fluids such as blood. Regarding.
この種電極体は、一端に開口部を備えた外筒ハ
ウジングと、このハウジングの開口部に当該開口
部を封ずるように設けられ測定ガス存在部分に対
接されるガス透過膜と、外筒ハウジング内に配設
された電極と、外筒ハウジング内に充填設定され
た内部液とを備えた構成となつている。そして、
測定ガス存在部分に対接された、たとえばポリプ
ロピレン膜よりなるガス透過膜を介して試料流体
より透過してくるガスにより電極部分で電解作用
が生じ還元電流応答によりガス濃度を測定するよ
うになつている。
This type of electrode body includes an outer cylindrical housing having an opening at one end, a gas permeable membrane provided in the opening of the housing so as to seal the opening and facing a part where the gas to be measured is present, and an outer cylindrical housing. The structure includes an electrode disposed within the housing and an internal liquid filled within the outer cylindrical housing. and,
Gas permeating from the sample fluid through a gas-permeable membrane made of, for example, polypropylene that is in contact with the area where the measurement gas is present causes an electrolytic action at the electrode area, and the gas concentration is now measured by the reduction current response. There is.
従来のガス透過膜を用いた電極体では、ガス透
過膜を、たとえばＯ−リングで外筒ハウジングの
開口部に固定する方法がとられていた。しかし、
この方法では、透過膜と外筒ハウジングの間から
内部液が漏出したり、あるいは試料流体が入り込
んで内部液と混合するなどの問題が避けられなか
つた。また、この固定方法では、Ｏ−リングを用
いた膜の取付、固定のため、手間がかかる上に均
一かつ正確な固定が困難であり、従つて、電極体
の量産化・小型化ならびに品質の向上の障害とな
つていた。 In conventional electrode bodies using gas permeable membranes, the gas permeable membrane is fixed to the opening of the outer cylinder housing using, for example, an O-ring. but,
In this method, problems such as internal liquid leaking from between the permeable membrane and the outer cylinder housing, or sample fluid entering and mixing with the internal liquid cannot be avoided. In addition, this fixing method uses O-rings to attach and fix the membrane, which is time-consuming and difficult to fix uniformly and accurately. This had become an obstacle to improvement.
また、他の固定方法として、接着剤を用いて透
過膜を外筒ハウジングの開口部においてその端縁
に接着する方法も見られる。しかし、この場合に
は接着剤の剥離、溶出あるいは膨潤といつた問題
が避けられず、長期に安定して使用できない欠点
があつた。 Another fixing method is to use an adhesive to adhere the permeable membrane to the edge of the opening of the outer cylinder housing. However, in this case, problems such as peeling, elution, or swelling of the adhesive were unavoidable, and there was a drawback that the adhesive could not be used stably for a long period of time.
考案の目的
この考案は、上記事情にかんがみてなされたも
のでその目的とするところは、外筒ハウジングに
対する膜の固定を簡単かつ確実になし得、内部液
の漏出や混合の問題が解消され、品質の向上、小
型化ならびに量産化が容易であり、しかも耐久性
に富む改善されたガス濃度測定用電極体を提供す
るにある。 Purpose of the invention This invention was made in view of the above circumstances, and its purpose is to easily and reliably fix the membrane to the outer cylinder housing, to solve the problem of internal liquid leakage and mixing, It is an object of the present invention to provide an improved electrode body for gas concentration measurement that has improved quality, is easy to be miniaturized and mass-produced, and is highly durable.
考案の具体的説明
すなわち、上記の目的を達成するために、本考
案においては、少なくとも１つの開口部を一端に
備えた外筒ハウジングと、前記開口部を封ずるよ
うに設けられ測定ガス存在部分に対接され、該外
筒ハウジングと同質の材質のガス透過膜と、該外
筒ハウジングに支持された支持体から露出して設
けられ前記外筒ハウジング内に互いに独立した状
態で配置された作用電極、基準電極および対向電
極と、前記外筒ハウジングと前記支持体との間に
形成されるとともに前記電極および前記ガス透過
膜と接するように内部液を収容する液収容室とを
具備してなり、前記支持体の前記ガス透過膜に対
向する側に前記作用電極を露出させた突部と前記
基準電極および前記対向電極を露出させたテーパ
状端面部とを形成し、露出端面の突部にある前記
作用電極にのみ前記ガス透過膜を弾性的に圧接さ
せ該ガス透過膜の該被検液との接触面積を小さく
させ、さらに、前記ガス透過膜は前記開口部の端
縁全周にわたつて熱融着されて前記外筒ハウジン
グと一体化されることを特徴とするものである。 Detailed Description of the Invention That is, in order to achieve the above object, the present invention includes an outer cylindrical housing having at least one opening at one end, and a measuring gas presence portion provided so as to seal the opening. a gas permeable membrane made of the same material as the outer cylinder housing, and a gas permeable membrane exposed from the support supported by the outer cylinder housing and arranged independently of each other in the outer cylinder housing. An electrode, a reference electrode, a counter electrode, and a liquid storage chamber formed between the outer cylindrical housing and the support and accommodating an internal liquid so as to be in contact with the electrode and the gas permeable membrane. , a protrusion exposing the working electrode and a tapered end face exposing the reference electrode and the counter electrode are formed on the side facing the gas permeable membrane of the support; The gas permeable membrane is brought into elastic pressure contact only with a certain working electrode to reduce the contact area of the gas permeable membrane with the test liquid, and further, the gas permeable membrane extends over the entire circumference of the edge of the opening. It is characterized in that it is integrated with the outer cylindrical housing by being heat-sealed.
上記構成において、膜の融着のために、たとえ
ば、超音波や高周波を利用した誘電体法による慣
用の融着材を用いてもよいし、あるいは、ハウジ
ングの素材を膜材と相容性のあるものとし、二色
成形等のインジエクシヨンの成型法により膜を外
筒ハウジングに直接固定する方法を用いてもよ
い。 In the above configuration, in order to fuse the membrane, a conventional welding material may be used, for example, by a dielectric method using ultrasound or high frequency, or the material of the housing may be made of a material that is compatible with the membrane material. Alternatively, a method of directly fixing the membrane to the outer cylinder housing by an injection molding method such as two-color molding may be used.
いずれの場合においても、膜はＯ−リングや接
着剤を用いた固定ではないので、上記従来の諸問
題を全て解消することができる。 In either case, since the membrane is not fixed using an O-ring or adhesive, all of the above-mentioned conventional problems can be solved.
以下、図面を参照して本考案のガス濃度測定用
電極体の実施例を説明する。 Hereinafter, embodiments of the electrode assembly for gas concentration measurement of the present invention will be described with reference to the drawings.
第１図および第２図に示す第１の実施例におい
て、１はポリプロピレン等で円筒状に構成された
外筒ハウジング、２は、たとえば膜厚10〜40μｍ
のポリプロピレン膜で形成されたガス透過膜、３
はハウジング１と同軸に配置されポリプロピレン
等よりなる電極支持体、４，５，６は支持体３内
に互いに独立して配置されるとともに基端部がケ
ーブル７に接続された作用電極、基準電極および
対向電極、８は各電極４，５，６の端部を露出さ
せる支持体３の露出端面３ａと膜２および外筒ハ
ウジング１とにより仕切られ、たとえばジメチル
スルホキシド（DMSO）溶液などの非水溶系溶
液などを内部液として充填設定した液収容室であ
る。 In the first embodiment shown in FIGS. 1 and 2, 1 is a cylindrical outer housing made of polypropylene or the like, and 2 has a film thickness of, for example, 10 to 40 μm.
Gas permeable membrane formed from polypropylene membrane, 3
is an electrode support made of polypropylene or the like and arranged coaxially with the housing 1; reference electrodes 4, 5, and 6 are working electrodes and reference electrodes arranged independently of each other in the support 3 and whose proximal ends are connected to a cable 7; and a counter electrode, 8, is partitioned by the exposed end surface 3a of the support 3 exposing the end of each electrode 4, 5, 6, the membrane 2 and the outer cylinder housing 1, and is separated by a non-aqueous solution such as a dimethyl sulfoxide (DMSO) solution. This is a liquid storage chamber filled with a system solution or the like as an internal liquid.
上記３電極４，５，６は、ケーブル７を介して
外部配置の、たとえばパルス、電解装置や表示記
録装置に接続されるが、図示を省略してある。 The three electrodes 4, 5, and 6 are connected via a cable 7 to an external device, such as a pulse generator or an electrolysis device or a display/recording device, but these are not shown.
作用電極４は、たとえば直径0.2mmの銀線より
なり、支持体３の中心軸線に沿つて設定され、基
準電極５および対電極６は、それぞれ、たとえば
直径1.0mmの銀線および白金線によつて構成され、
中央の作用電極４をはさむ位置関係にある。それ
で、これら３電極は、いわゆるクラーク型電極を
構成する。 The working electrode 4 is made of a silver wire with a diameter of 0.2 mm, for example, and is set along the central axis of the support 3, and the reference electrode 5 and the counter electrode 6 are made of a silver wire and a platinum wire with a diameter of 1.0 mm, respectively. composed of
They are positioned to sandwich the central working electrode 4. These three electrodes thus constitute a so-called Clark-type electrode.
露出端面３ａは、作用電極４の端部が位置する
中心部を頂点とする円錐形のテーパ面をなす。従
つて、作用電極４のみがガス透過膜２に積極的に
接する構成となつている。 The exposed end surface 3a forms a conical tapered surface having an apex at the center where the end of the working electrode 4 is located. Therefore, only the working electrode 4 is in positive contact with the gas permeable membrane 2.
外筒ハウジング１と支持体３との間には、基端
部分においてねじ手段をなすねじ部分９が設けら
れ、互いに螺合した構成となつている。従つて、
このねじ部分９により、ハウジング１に対し支持
体３を軸線方向に、相対移動させて、膜２に対す
る作用電極４の密着の度合を調整することができ
る。 A threaded portion 9 serving as a screw means is provided at the proximal end portion between the outer cylinder housing 1 and the support body 3, and the two are screwed together. Therefore,
This threaded portion 9 allows relative movement of the support 3 in the axial direction with respect to the housing 1 to adjust the degree of close contact of the working electrode 4 to the membrane 2.
ガス透過膜２は、電極体を、測定時に、たとえ
ば血液などの試料流体中に投入することにより、
二酸化炭素や酸素などの測定すべきガスの存在部
分に対接される。 The gas-permeable membrane 2 allows the electrode body to be inserted into a sample fluid such as blood during measurement.
It is placed in contact with the area where the gas to be measured, such as carbon dioxide or oxygen, is present.
この膜２は、外筒ハウジング１の一端、すなわ
ち、測定端の開口部１０において、ハウジングの
端縁１ａに全周にわたつて融着されてハウジング
と一体化されている。 This membrane 2 is integrated with the housing by being fused to the end edge 1a of the housing over the entire circumference at one end of the outer cylinder housing 1, that is, at the opening 10 at the measurement end.
融着の方法としては、たとえば、超音波や高周
波を利用した誘電体法による熱溶着あるいはイン
ジエクシヨンによる成型で膜２を外筒ハウジング
１の端縁に直接固定するなどの具体的方法を採用
し得る。前者の方法の場合、たとえば超音波ウエ
ルダーや、ヒートシーラーなどの加熱融着材を用
い得る。 As the method of fusion, specific methods can be adopted, such as directly fixing the membrane 2 to the edge of the outer cylindrical housing 1 by thermal welding using a dielectric method using ultrasonic waves or high frequencies, or by molding by injection extrusion. . In the case of the former method, a heat sealing material such as an ultrasonic welder or a heat sealer may be used.
いずれにしても、本考案では、上述のように、
膜が合成樹脂製のもので、しかも、きわめて薄い
膜厚を有しているので、加熱ないしは成型によつ
て、外筒ハウジングの開口部端縁に融着して完全
に一体化し得る。 In any case, in this invention, as mentioned above,
Since the membrane is made of synthetic resin and has an extremely thin thickness, it can be fused to and completely integrated with the edge of the opening of the outer cylinder housing by heating or molding.
従つて、ここではＯ−リングや接着剤を何等要
しない。特に、膜２及び外筒ハウジング１をポリ
プロピレンなどの同質の合成樹脂を用いれば、よ
り完全な一体化をなし得る。 Therefore, no O-rings or adhesives are required here. In particular, if the membrane 2 and the outer cylinder housing 1 are made of the same synthetic resin such as polypropylene, more complete integration can be achieved.
なお、この実施例の場合、外筒ハウジング１の
径は８mmで長さは50mmである。 In the case of this embodiment, the outer cylinder housing 1 has a diameter of 8 mm and a length of 50 mm.
第１図において外筒ハウジング１の端縁１ａに
融着される膜２の周縁部が融着部２ａとして構成
される。 In FIG. 1, the peripheral portion of the membrane 2 that is fused to the edge 1a of the outer cylinder housing 1 is configured as a fused portion 2a.
第３図、第４図および第５図には、この融着部
２ａを補強した構成例を支持体等の内部構成部分
を省略して示してある。第１の実施例と対応する
部分には同一の参照番号を付して説明すれば、第
３図では、融着部２ａを若干盛り上げた肉厚構成
としてある。第４図では、膜２をハウジング１の
端縁１ａの全周にわたり融着部２ａで融着すると
ともにハウジング外周部に形成した環状段部１１
をおおうように折曲し、更に、その上から、環状
でかつ膜中央部に対応する孔１２ａをもつキヤツ
プ１２をかぶせて膜２を保持する構成としたもの
である。また、第５図では、ハウジング１の端縁
１ａを内周部に形成した段部１３のところに設
け、その端縁１ａの全周にわたり膜２の融着部２
ａを融着し、さらに、この段部１３に止めリング
１４を嵌入して膜２を保持する構成を示す。 FIGS. 3, 4, and 5 show examples of structures in which the fused portion 2a is reinforced, with internal components such as supports omitted. Parts corresponding to those in the first embodiment will be described with the same reference numerals, and in FIG. 3, the fused portion 2a has a slightly raised wall thickness. In FIG. 4, the membrane 2 is fused over the entire circumference of the edge 1a of the housing 1 at a fused portion 2a, and an annular step 11 formed on the outer periphery of the housing.
The membrane 2 is held by bending the membrane 2 so as to cover the membrane 2, and then placing a ring-shaped cap 12 having a hole 12a corresponding to the center of the membrane. In addition, in FIG. 5, the edge 1a of the housing 1 is provided at a stepped portion 13 formed on the inner circumference, and the fused portion 2 of the membrane 2 is provided over the entire circumference of the edge 1a.
A configuration is shown in which the membrane 2 is held by fusion-bonding the membrane 2 by fusion-bonding the membrane 2 and then fitting a retaining ring 14 into the stepped portion 13.
またキヤツプ１２および止めリング１４と外筒
ハウジングとで膜２をはさんだものを融着する方
法を用いて、膜を保持、補強しても良い。 Alternatively, the membrane 2 may be held and reinforced by fusing the membrane 2 sandwiched between the cap 12, retaining ring 14, and outer cylinder housing.
なお、これらの補強構成は、本考案において必
須の構成ではなく、電極体のサイズ、試料流体の
圧力等に応じて適用すればよい。 Note that these reinforcing structures are not essential in the present invention, and may be applied depending on the size of the electrode body, the pressure of the sample fluid, etc.
第６図および第７図に示す本考案の第２および
第３の実施例は、外筒ハウジングと支持体との異
なる構成態様を示すもので、両実施例ともに第１
の実施例に対応する部分に同一の参照番号を付し
て相違点を簡単に説明する。 The second and third embodiments of the present invention shown in FIGS. 6 and 7 show different configurations of the outer cylinder housing and the support body, and both embodiments are similar to the first embodiment.
The same reference numerals are given to parts corresponding to those in the embodiment, and the differences will be briefly explained.
両実施例において、外筒ハウジング１の内周面
と、これに対応して嵌合する支持体３の外周面を
一部、円錐面状のテーパ面１５で構成する。これ
によつて、外筒ハウジング１は支持体３に対して
テーパ面１５の部分で高い密着性が得られるの
で、第１の実施例の場合におけるＯ−リング１６
を両者間に介在させなくとも、液収容室８を十分
にシールすることができる。なお、膜２の固定態
様は、第６図の第２の実施例では、第３図と同様
に、また第７図の第３の実施例では第５図の構成
と同様にしてある。 In both embodiments, the inner circumferential surface of the outer cylindrical housing 1 and the outer circumferential surface of the supporting member 3 that fits therewith are partially formed of a conical tapered surface 15. As a result, the outer cylinder housing 1 can achieve high adhesion to the support body 3 at the tapered surface 15, so that the O-ring 16 in the case of the first embodiment can be
The liquid storage chamber 8 can be sufficiently sealed without intervening between the two. The manner in which the membrane 2 is fixed is the same in the second embodiment shown in FIG. 6 as in FIG. 3, and in the third embodiment shown in FIG. 7 in the same manner as in the structure shown in FIG. 5.
以上、実施例につき説明したが、本考案では、
電極が、いわゆるクラーク型の３極構成のものに
限定されず、他のたとえば２極構成のものでもよ
い。また、電極支持体の露出端面がテーパ面で構
成されることも必須の要件ではない。 The embodiments have been described above, but in the present invention,
The electrodes are not limited to those having a so-called Clark type three-pole configuration, but may be of other types, such as two-pole configurations. Furthermore, it is not an essential requirement that the exposed end surface of the electrode support be configured as a tapered surface.
考案の具体的効果
以上のように、本考案のガス濃度測定用電極体
は、支持体のガス透過膜に対向する側に作用電極
を露出させた突部と基準電極および対向電極を露
出させたテーパ状端面部とを形成し、露出端面の
突部にある前記作用電極にのみ前記ガス透過膜を
弾性的に圧接させ該ガス透過膜の該被検液との接
触面積を小さくさせるような構成となつている。 Specific Effects of the Invention As described above, the electrode body for gas concentration measurement of the present invention has a protrusion that exposes the working electrode on the side facing the gas permeable membrane of the support, and exposes the reference electrode and the counter electrode. A tapered end surface is formed, and the gas permeable membrane is elastically pressed only against the working electrode located on the protrusion of the exposed end surface, thereby reducing the contact area of the gas permeable membrane with the test liquid. It is becoming.
したがつて、作用電極のみが膜に対して密着す
るため、応答速度が迅速で、電界生成物の発生な
らびにその影響が少なく、露出端面のテーパ面部
の構成により内部液が露出端面と膜との間に積極
的に流れて電界生成物の拡散がスムーズになさ
れ、電極間の液抵抗を小さくすることができ、試
料流体の流動、圧力変化の影響を少なくでき、測
定ガス分圧が高い領域においても直線的に応答す
る還元電流値を得ることができ、応答特性に優
れ、高精度の測定をなし得るガス濃度測定用電極
体を提供できる。 Therefore, since only the working electrode is in close contact with the membrane, the response speed is quick, the generation of electric field products and its effects are small, and the configuration of the tapered surface portion of the exposed end surface prevents internal liquid from coming into contact with the exposed end surface and the membrane. Active flow between the electrodes allows smooth diffusion of electric field products, reduces the liquid resistance between the electrodes, and reduces the influence of sample fluid flow and pressure changes, making it ideal for use in areas where the partial pressure of the gas to be measured is high. It is possible to provide an electrode body for gas concentration measurement that can obtain a reduction current value that responds linearly, has excellent response characteristics, and can perform highly accurate measurements.
さらに、ガス透過膜が外筒ハウジングと同質の
材質であつて、このガス透過膜は前記開口部の端
縁全周にわたつて熱融着されて前記外筒ハウジン
グと一体化される構造となつている。 Furthermore, the gas permeable membrane is made of the same material as the outer cylinder housing, and the gas permeable membrane is integrated with the outer cylinder housing by heat-sealing the entire circumference of the edge of the opening. ing.
したがつて、ガス透過膜と外筒ハウジングとの
接着が良好かつ強固になされ、上記のように内部
液が露出端面と膜との間に積極的に流れるような
構造のガス濃度測定用電極体において、内部液が
漏出したり試料流体との混合等の問題がない。し
かも、Ｏリングや接着剤を一切用いないので、組
立時の膜の固定作業の煩わしさが無く、しかも、
接着剤を使用した場合の剥離や溶出あるいは膨潤
等の問題も全て解消され、品質が安定し、量産に
適するとともに耐久性に富んだガス濃度測定用電
極体を提供できる。 Therefore, the electrode body for gas concentration measurement has a structure in which the adhesion between the gas permeable membrane and the outer cylinder housing is good and strong, and the internal liquid flows actively between the exposed end face and the membrane as described above. There are no problems such as leakage of internal liquid or mixing with sample fluid. Moreover, since no O-rings or adhesives are used, there is no need to worry about fixing the membrane during assembly.
All problems such as peeling, elution, and swelling when using adhesives are eliminated, and it is possible to provide an electrode body for gas concentration measurement that is stable in quality, suitable for mass production, and highly durable.
第１図は本考案の第１の実施例の縦断面図、第
２図はガス透過膜を部分的に破断して示す第１図
の下面図、第３図、第４図および第５図はガス透
過膜を外筒ハウジングに固定する部分の補強構成
をそれぞれ示す構成図、第６図および第７図は本
考案の第２および第３の実施例の縦断面図であ
る。
１……外筒ハウジング、１ａ……端縁、２……
ガス透過膜、３……支持体、４，５，６……電
極、８……液収容室。
FIG. 1 is a longitudinal sectional view of the first embodiment of the present invention, FIG. 2 is a bottom view of FIG. 1 showing the gas permeable membrane partially cut away, and FIGS. 3, 4, and 5. 6 and 7 are longitudinal cross-sectional views of the second and third embodiments of the present invention, respectively. 1... Outer cylinder housing, 1a... End edge, 2...
Gas permeable membrane, 3... Support, 4, 5, 6... Electrode, 8... Liquid storage chamber.
Claims (1)
ハウジングと、 前記開口部を封ずるように設けられ測定ガス
存在部分に対接され、該外筒ハウジングと同質
の材質のガス透過膜と、 該外筒ハウジングに支持された支持体から露
出して設けられ前記外筒ハウジング内に互いに
独立した状態で配置された作用電極、基準電極
および対向電極と、 前記外筒ハウジングと前記支持体との間に形
成されるとともに前記電極および前記ガス透過
膜と接するように内部液を収容する液収容室と を具備してなり、 前記支持体の前記ガス透過膜に対向する側に
前記作用電極を露出させた突部と前記基準電極
および前記対向電極を露出させたテーパ状端面
部とを形成し、露出端面の突部にある前記作用
電極にのみ前記ガス透過膜を弾性的に圧接させ
該ガス透過膜の該被検液との接触面積を小さく
させ、さらに、前記ガス透過膜は前記開口部の
端縁全周にわたつて熱融着されて前記外筒ハウ
ジングと一体化されることを特徴とするガス濃
度測定用電極体。 (2) 支持体が外筒ハウジングと同軸状態に配置さ
れていることを特徴とする実用新案登録請求の
範囲第１項記載のガス濃度測定用電極体。 (3) 支持体と外筒ハウジングは、これら両者間に
形成されたねじ手段により軸線方向に相対移動
可能である実用新案登録請求の範囲第２項記載
のガス濃度測定用電極体。 (4) 外筒ハウジングの内周面と支持体の外周面が
互いに嵌合する対応テーパ面が形成されてなる
実用新案登録請求の範囲第２項記載のガス濃度
測定用電極体。 (5) ガス透過膜と外筒ハウジングとの融着は、超
音波ないし高周波等の誘電体法を利用してなる
実用新案登録請求の範囲第１項ないし第４項の
いずれか１つに記載のガス濃度測定用電極体。[Claims for Utility Model Registration] (1) An outer cylindrical housing having at least one opening at one end; a gas permeable membrane made of the same material; a working electrode, a reference electrode, and a counter electrode that are exposed from a support supported by the outer housing and arranged independently of each other within the outer housing; a liquid storage chamber formed between the outer cylindrical housing and the support and accommodating an internal liquid so as to be in contact with the electrode and the gas permeable membrane; A protrusion exposing the working electrode and a tapered end face exposing the reference electrode and the counter electrode are formed on opposing sides, and the gas permeable membrane is formed only on the working electrode at the protrusion of the exposed end face. are elastically pressed together to reduce the contact area of the gas permeable membrane with the test liquid, and the gas permeable membrane is heat-sealed all around the edge of the opening to attach to the outer cylinder housing. An electrode body for gas concentration measurement, characterized in that it is integrated with. (2) The electrode assembly for gas concentration measurement according to claim 1, wherein the support body is arranged coaxially with the outer cylinder housing. (3) The electrode assembly for gas concentration measurement according to claim 2, wherein the support body and the outer cylindrical housing are movable relative to each other in the axial direction by a screw means formed between them. (4) The electrode body for gas concentration measurement according to claim 2, wherein the inner circumferential surface of the outer cylinder housing and the outer circumferential surface of the support body are formed with corresponding tapered surfaces that fit into each other. (5) The gas permeable membrane and the outer cylinder housing are fused together using a dielectric method such as ultrasonic waves or high frequency waves, as described in any one of claims 1 to 4 of the utility model registration claims. Electrode body for gas concentration measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984143292U JPH0441328Y2 (en) | 1984-09-21 | 1984-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984143292U JPH0441328Y2 (en) | 1984-09-21 | 1984-09-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6157853U JPS6157853U (en) | 1986-04-18 |
| JPH0441328Y2 true JPH0441328Y2 (en) | 1992-09-29 |
Family
ID=30701592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984143292U Expired JPH0441328Y2 (en) | 1984-09-21 | 1984-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441328Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9829461B2 (en) | 2012-11-29 | 2017-11-28 | Horiba Advanced Techno, Co., Ltd. | Measuring device |
| JP6989448B2 (en) * | 2018-06-19 | 2022-01-05 | 理研計器株式会社 | Constant potential electrolytic oxygen sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113385A (en) * | 1981-12-28 | 1983-07-06 | Oriental Yeast Co Ltd | Diaphragm molding body for diaphragm electrode and its production |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2017930A (en) * | 1978-03-22 | 1979-10-10 | Beckman Instruments Inc | Amperometric oxygen sensor |
-
1984
- 1984-09-21 JP JP1984143292U patent/JPH0441328Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113385A (en) * | 1981-12-28 | 1983-07-06 | Oriental Yeast Co Ltd | Diaphragm molding body for diaphragm electrode and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6157853U (en) | 1986-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3278408A (en) | Electrochemical cell | |
| US5336390A (en) | Electrochemical gas sensor with disk-shaped electrodes, which are also electrical contact leads | |
| JP2527827B2 (en) | Calibration device for calibration of sensor | |
| US3879279A (en) | Electrode with exchangeable membrane | |
| JPH0441328Y2 (en) | ||
| JP6390184B2 (en) | Electrode member, composite electrode, and electrode member manufacturing method | |
| JPH02165043A (en) | Calibrator for hygrometer usable outdoors | |
| JPH082608Y2 (en) | Flow type ion electrode | |
| JPH0435174B2 (en) | ||
| JPS62279814A (en) | Liquid purifying filter | |
| US4207160A (en) | Measuring sensor head for determining the contents of gases in liquids | |
| JPH10300713A (en) | Method and device for manufacturing electrochemical sensor | |
| FR2585472A1 (en) | GAS ANALYZER | |
| WO2022091947A1 (en) | Diaphragm-type sensor and measurement system using same | |
| JPH048363Y2 (en) | ||
| JP6548482B2 (en) | Galvanic cell type oxygen sensor and method of injecting electrolyte into galvanic cell type oxygen sensor | |
| JPS6335406Y2 (en) | ||
| JPH041496Y2 (en) | ||
| JPH0137251Y2 (en) | ||
| CN216926907U (en) | Sealing measuring device with matched load | |
| JP2004061401A (en) | Proton conductive gas sensor and manufacturing method of the same | |
| JP2008111820A (en) | Gas sensor | |
| JPS5824207Y2 (en) | Ammonia concentration measurement electrode | |
| JPS643072Y2 (en) | ||
| JPH0342367Y2 (en) |