JPH0422290Y2 - - Google Patents
Info
- Publication number
- JPH0422290Y2 JPH0422290Y2 JP1984144804U JP14480484U JPH0422290Y2 JP H0422290 Y2 JPH0422290 Y2 JP H0422290Y2 JP 1984144804 U JP1984144804 U JP 1984144804U JP 14480484 U JP14480484 U JP 14480484U JP H0422290 Y2 JPH0422290 Y2 JP H0422290Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- container
- liquid
- test
- pressure
- 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 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 8
- 239000012085 test solution Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 229920006362 Teflon® Polymers 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 3
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- GTKRFUAGOKINCA-UHFFFAOYSA-M chlorosilver;silver Chemical compound [Ag].[Ag]Cl GTKRFUAGOKINCA-UHFFFAOYSA-M 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は、高温高圧下の環境における金属材料
の腐食速度等を電気科学的手段で測定するための
新規な外部照合電極に関する。[Detailed Description of the Invention] The present invention relates to a novel external reference electrode for measuring the corrosion rate of metal materials in environments under high temperature and high pressure by electrochemical means.
高温高圧水を環境とする金属材料の腐食問題
は、現在、産業界のいろいろな分野で生じてお
り、高温高圧水の腐食機構を究明し、有効な防止
策を確立しようとする努力がなされており、その
腐食機構を解明するために、一般には電気化学測
定法が用いられている。この測定法において使用
される照合電極、すなわち比較電極には、測定環
境が高温高圧水下であることに起因する問題点を
解消するため、例えば液流出型外部照合電極、圧
力平衡型外部照合電極等が提案されているが、特
に圧力平衡型外部照合電極は、他の種類のものと
比較して、取扱いが容易で長寿命である点、更に
熱液絡電位が補正可能であることにより、実用的
に問題がなく、熱力学的な尺度である各温度での
標準水素電極基準に換算することのできる点等に
おいて、最も好ましいものと考えられている。 The problem of corrosion of metal materials exposed to high-temperature, high-pressure water is currently occurring in various fields of industry, and efforts are being made to investigate the corrosion mechanism of high-temperature, high-pressure water and to establish effective preventive measures. Therefore, electrochemical measurement methods are generally used to elucidate the corrosion mechanism. In order to solve problems caused by the measurement environment being under high-temperature, high-pressure water, the reference electrodes used in this measurement method are, for example, liquid-flow type external reference electrodes, pressure-balanced type external reference electrodes, etc. In particular, pressure-balanced external reference electrodes are easier to handle and have a longer lifespan than other types, and furthermore, the thermo-liquid junction potential can be corrected. It is considered to be the most preferable method because it causes no practical problems and can be converted to a standard hydrogen electrode standard at each temperature, which is a thermodynamic measure.
従来より提案されている圧力平衡型外部照合電
極の構造を第１図に示す。この外部照合電極の構
造には、高温高圧容器内に液絡部１′と電極内部
液（KCl溶液）用容器４ａが設けられ、更に高温
高圧容器外に常温高圧に耐えるAg／AgClよりな
る電極１８が設けてある。更に安全面を考慮し
て、外壁管４ａをステンレス鋼管を用い、電極内
部液２に接する部分にはテフロン（商標）製のチ
ユーブを設けている。ここで圧力平衡は液絡部
１′内のアスベストを通して、テフロン管内の圧
力を高圧容器内圧力と同一にすることにより電極
１８を圧力平衡下においている。しかしこの従来
の外部照合電極では、電極内部液（KCl）と試験
液との液絡部１′が高温高圧容器内にあり又その
周辺部品５′もテフロン等の樹脂によりつくられ
ているため、試験温度が200℃程度に制限され、
又、電極内部液と試験液が混入されやすく、照合
電極自身の電位が変化したり又試験液が汚染され
ることにより、正確な測定をするのが困難であつ
た。 FIG. 1 shows the structure of a pressure-balanced external reference electrode that has been proposed in the past. The structure of this external reference electrode includes a liquid junction 1' and a container 4a for electrode internal liquid (KCl solution) inside a high-temperature and high-pressure container, and an electrode made of Ag/AgCl that can withstand room temperature and high pressure outside the high-temperature and high-pressure container. 18 are provided. Furthermore, in consideration of safety, a stainless steel tube is used as the outer wall tube 4a, and a tube made of Teflon (trademark) is provided in the portion that comes into contact with the electrode internal liquid 2. Here, the pressure is balanced by making the pressure in the Teflon tube the same as the pressure in the high-pressure container through asbestos in the liquid junction 1', thereby keeping the electrode 18 under pressure balance. However, in this conventional external reference electrode, the liquid junction 1' between the electrode internal liquid (KCl) and the test liquid is located in a high-temperature, high-pressure container, and the surrounding parts 5' are also made of resin such as Teflon. The test temperature is limited to about 200℃,
In addition, the electrode internal solution and the test solution tend to mix, which changes the potential of the reference electrode itself and contaminates the test solution, making it difficult to make accurate measurements.
また、より正確な電位を測定するために、本願
の考案者の一人は先に特開昭57−125841号公報に
おいて、電極と電極液とを内部に有する絶縁性の
電極容器を設け、この電極液と高温高圧水用試験
容器内の試験液との液絡を保つための液絡部を試
験容器内に設け、この液絡部の近傍に電極を位置
させ、電極容器内にその一端が電極液に接する摺
動可能なピストンを設け、このピストンの他端に
試験容器の圧力を導くようにした高温高圧水用圧
力平衡型内部照合電極を提案した。この照合電極
には、試験容器内に位置する液絡部が高温の試験
容器から悪影響を受け易いという問題があつた。 In addition, in order to measure the potential more accurately, one of the inventors of the present invention previously proposed in Japanese Patent Application Laid-Open No. 125841/1984 an insulating electrode container containing an electrode and an electrode liquid therein, and the electrode A liquid junction is provided in the test container to maintain a liquid junction between the liquid and the test liquid in the test container for high-temperature, high-pressure water, and an electrode is placed near this liquid junction. We proposed a pressure-balanced internal reference electrode for high-temperature, high-pressure water, which is equipped with a slidable piston in contact with the liquid, and the pressure of the test container is guided to the other end of the piston. This reference electrode had a problem in that the liquid junction located inside the test container was susceptible to adverse effects from the high temperature test container.
本考案は上記の欠点を解消した圧力平衡型部外
部照合電極を提供するものである。 The present invention provides a pressure balanced external reference electrode that overcomes the above drawbacks.
本考案の外部照合電極は、その内部に電極１８
ａと電極液１７とが設置される絶縁性の電極容器
１３と、この電極容器１３内の電極液１７と高温
高圧水用試験容器４内の試験液８との液絡を保つ
ための液絡手段１５と、電極容器１３内に設けら
れるとともにその一端が電極液１７に接する摺動
可能なピストン１２とを備え、このピストン１２
の他端に試験容器４の圧力を導くようにした高温
高圧水用圧力平衡型照合電極において、試験容器
４の外部領域に電極容器１３と液絡手段１５とを
設け、この液絡手段１５に対して試験容器４から
試験液８を導くためのキヤピラリーチユーブ１等
からなる伝導手段を具備せしめたことを特徴とす
る。 The external reference electrode of the present invention has an electrode 18 inside it.
an insulating electrode container 13 in which a and an electrode solution 17 are placed, and a liquid junction for maintaining a liquid connection between the electrode solution 17 in this electrode container 13 and the test solution 8 in the high-temperature, high-pressure water test container 4. means 15, and a slidable piston 12 provided in the electrode container 13 and having one end in contact with the electrode liquid 17, the piston 12
In a pressure-balanced reference electrode for high-temperature, high-pressure water in which the pressure of the test container 4 is guided to the other end, an electrode container 13 and a liquid junction means 15 are provided in the external area of the test container 4, and the liquid junction means 15 is On the other hand, it is characterized in that it is equipped with a conduction means consisting of a capillary reach tube 1 or the like for guiding the test liquid 8 from the test container 4.
第２図は、本考案による外部照合電極を用いる
試験槽において、
高温高圧水の環境下で試料金属２ａ（試験極）に
外部から電流を与えて電流密度と電位の関係、す
なわち分極曲線を測定し、この曲線から腐食速度
を求める方法を示す。第２図の回路は周知の通り
定電位法と称しており、試験電極２ａとキヤピラ
リーチユーブ１により試験液８が導かれる照合電
極１８ａとの間にあらかじめ設定した電位Ｅに偏
差ΔEを示すとこれを増幅して偏差が零になるよ
うに対極３ａからの電流を自動的に調節する定電
位装置７を使用した実施例である。圧力容器４の
外側に加熱装置６を有し、内部に試験液８と金属
材料である試験電極２ａ、キヤピラリーチユーブ
１、対極３ａを設置し、電極リード線の圧力容器
蓋板５を貫通する部分１ｃ，２ｃ，３ｃは各々電
気的に絶縁とされ、また、高圧シールされてい
る。 Figure 2 shows the relationship between current density and potential, that is, the polarization curve, by applying an external current to the sample metal 2a (test electrode) in a high-temperature, high-pressure water environment in a test tank using an external reference electrode according to the present invention. We then show how to determine the corrosion rate from this curve. As is well known, the circuit shown in FIG. 2 is called a constant potential method, and if a deviation ΔE is shown in the potential E set in advance between the test electrode 2a and the reference electrode 18a to which the test liquid 8 is guided by the capillary reach tube 1. This embodiment uses a constant potential device 7 that automatically adjusts the current from the counter electrode 3a so that the deviation becomes zero by amplifying this. A heating device 6 is provided on the outside of the pressure vessel 4, and a test liquid 8, a test electrode 2a made of a metal material, a capillary reach tube 1, and a counter electrode 3a are installed inside, and the electrode lead wire penetrates the pressure vessel cover plate 5. Portions 1c, 2c, and 3c are each electrically insulated and high pressure sealed.
そして外部照合電極は、高温高圧容器内の試験
液８をキヤピラリーチユーブ１を介して試験槽４
の外に導き、導く間に冷却ジヤケツト２２ａによ
り冷却し、測定容器２１内に設けられた絶縁性の
材料でできた電極容器内の電極液に導通させる。
そしてその電極容器にはKCl溶液を介して照合電
極１８ａを設けてある。更にその照合電極１８ａ
はリード線１８ｂに接続され、それを介して定電
位装置７に接続されている。 The external reference electrode supplies the test liquid 8 in the high-temperature and high-pressure container to the test chamber 4 through the capillary reach tube 1.
While being guided, it is cooled by the cooling jacket 22a and conductive to the electrode liquid in the electrode container made of an insulating material provided in the measurement container 21.
A reference electrode 18a is provided in the electrode container via a KCl solution. Furthermore, the reference electrode 18a
is connected to the lead wire 18b, and is connected to the constant potential device 7 via the lead wire 18b.
本考案に従う圧力平衡型外部照合電極一実施例
の詳細を第３図に示す。この図に示す電極におい
て、試験液８は、絶縁性のキヤピラリーチユーブ
１内を通り測定容器２１内へ導かれる。ここでキ
ヤピラリーチユーブ内には絶縁性の繊維又はセラ
ミツクの粉末１ａを充填させておき、たとえ気泡
が発生したとしても液絡を保持しておくことが好
ましい。試験液は上昇するにつれ、キヤピラリー
チユーブの周辺に設けた冷却ジヤケツト２２ａに
より冷却され、測定容器内に入るときは常温とな
る。ここでの冷却方法は、冷却水を循環させるこ
とにより行う。又冷却ジヤケツト２２ａは圧力容
器蓋板５上にネジ方式により締結され測定容器２
１は、絶縁リング２３ａと絶縁ブツシユ２４を介
ナツト２６により固定され、冷却ジヤケツトと絶
縁されている。測定容器２１内には電極容器１３
が設けられ、その電極容器１３には照合電極１８
ｂが設けられている。この照合電極はAg／AgCl
電極であり、電極容器１３内には、KCl溶液であ
る電極液１７が、入れられている。試験液８と電
極液との液絡は、電極容器１３の先端に比較的緻
密なジルコニアよりなる液絡プラグ１５を設ける
ことにより行われ、又その液絡プラグ１５により
電極液１７（KCl）の流出を防止している。液絡
プラグ１５の固定はキヤツプ１４を電極容器１３
の先端にねじ込むことによりなし、又電極液１７
の流出を防止するため液絡プラグ１７にテーパ部
１５ａを設けている。 Details of one embodiment of a pressure balanced external reference electrode according to the present invention are shown in FIG. In the electrode shown in this figure, a test liquid 8 is guided into a measurement container 21 through an insulating capillary reach tube 1 . Here, it is preferable to fill the capillary tube with insulating fiber or ceramic powder 1a to maintain the liquid junction even if bubbles are generated. As the test liquid rises, it is cooled by a cooling jacket 22a provided around the capillary reach tube, and reaches room temperature when it enters the measurement container. The cooling method here is performed by circulating cooling water. Further, the cooling jacket 22a is screwed onto the pressure vessel cover plate 5 and the measurement vessel 2
1 is fixed by an insulating ring 23a and an insulating bush 24 with an intervening nut 26, and is insulated from the cooling jacket. There is an electrode container 13 in the measurement container 21.
is provided, and a reference electrode 18 is provided in the electrode container 13.
b is provided. This reference electrode is Ag/AgCl
An electrode liquid 17, which is an electrode, is placed in an electrode container 13, which is a KCl solution. The liquid junction between the test liquid 8 and the electrode liquid is achieved by providing a liquid junction plug 15 made of relatively dense zirconia at the tip of the electrode container 13, and the liquid junction plug 15 connects the electrode liquid 17 (KCl). Prevents leakage. To fix the liquid junction plug 15, connect the cap 14 to the electrode container 13.
By screwing it into the tip of the electrode liquid 17.
The liquid junction plug 17 is provided with a tapered portion 15a to prevent the liquid from flowing out.
更に電極容器１３内には絶縁材よりなるピスト
ン１２を設けピストン１２と液絡プラグの間にの
み電極液が満してある。ピストン１２の中心に貫
通穴を設け、Agよりなる照合電極線１８ｂを通
し、ピストンは電極容器１３の内面上を摺動可能
に取付けられている。電極容器１３は、絶縁材、
例えばジルコニウム金属を酸化させたジルコニア
や樹脂等よりつくられている。 Furthermore, a piston 12 made of an insulating material is provided in the electrode container 13, and the electrode liquid is filled only between the piston 12 and the liquid junction plug. A through hole is provided in the center of the piston 12, and a reference electrode wire 18b made of Ag is passed through the piston, and the piston is slidably mounted on the inner surface of the electrode container 13. The electrode container 13 is made of an insulating material,
For example, it is made from zirconia or resin, which is made by oxidizing zirconium metal.
電極容器１３の上方１３ａ部は大気とシールす
るシールプラグ９とネジ結合されシールプラグ９
がテフロン製テーパ状のためナツト１１を締めこ
むことによりリング１０を介してシールプラグと
Ag線１８ｂ、シールプラグの部分９ａ，９ｂが
シールされる。本実施例で使用する電極はAg線
１８ｂの先端にAg／AgCl電極１８ａを有する銀
−塩化銀であり、ピストン１２との間はパツキン
１２ｂを設けAg線１８ｂの表面を、絶縁チユー
ブ１８ｃにて被覆し、その表面においてピストン
１２が摺動してもシールが破れないようにしてい
る。更にピストン１２の外側にはパツキン１２ａ
を設け、電極容器１３内をピストン１２が摺動し
ても電極液１７がもれないようにしてある。更に
電極容器１３の上方に穴１３ｃを設け、試験液８
がキヤピラリーチユーブ１を通り、矢印８ａ方向
に測定容器２１を通り更に穴１３ｃを通つて、ピ
ストン１２の上部に連通するようにしてある。 The upper part 13a of the electrode container 13 is screwed to a seal plug 9 for sealing from the atmosphere.
Since it is made of Teflon and has a tapered shape, tightening the nut 11 connects it to the seal plug via the ring 10.
The Ag wire 18b and the seal plug parts 9a and 9b are sealed. The electrode used in this example is a silver-silver chloride electrode having an Ag/AgCl electrode 18a at the tip of the Ag wire 18b. A packing 12b is provided between the Ag wire 18b and the piston 12, and the surface of the Ag wire 18b is covered with an insulating tube 18c. The seal is coated so that the seal will not be broken even if the piston 12 slides on the surface. Furthermore, a gasket 12a is provided on the outside of the piston 12.
is provided to prevent the electrode liquid 17 from leaking even when the piston 12 slides inside the electrode container 13. Furthermore, a hole 13c is provided above the electrode container 13, and the test liquid 8
passes through the capillary reach tube 1, passes through the measuring container 21 in the direction of the arrow 8a, and further passes through the hole 13c to communicate with the upper part of the piston 12.
そのため、ピストン１２とシールプラグ９の間
は圧力容器中の圧力ＰKg／cm2がピストンの上方に
位置する電極容器の孔１３ｃを通りピストン１２
に加えられているため電極容器１３の外面、内面
とも同圧力を受け平衡が保たれている。そのため
電極液１７が高温により体積膨張してもピストン
１２がその分移動し液絡プラグ１５より流出する
ことなく常に電極容器内の電極液が保持され高温
室温の繰り返しにおいてもピストン１２の移動に
よつて、液１７の流出や試験液８の流入が防止さ
れ、温度と圧力の影響を受けることなく常に一定
の電極液の濃度として正確な電位を測定すること
ができる。また、試験容器４と液絡部１５との間
に例えば冷却ジヤケツト２２ａ等を設けて試験液
８を冷却できるから、液絡部１５において試験容
器４からの温度の影響を排除できる。 Therefore, between the piston 12 and the seal plug 9, the pressure PKg/cm 2 in the pressure vessel passes through the hole 13c of the electrode container located above the piston and the piston 12.
Since the pressure is applied to both the outer and inner surfaces of the electrode container 13, the same pressure is applied to the electrode container 13 to maintain equilibrium. Therefore, even if the electrode liquid 17 expands in volume due to high temperature, the piston 12 will move by that amount, and the electrode liquid in the electrode container will always be maintained without flowing out from the liquid junction plug 15. Even when high temperature and room temperature are repeated, the piston 12 will move by that amount. Therefore, outflow of the liquid 17 and inflow of the test liquid 8 are prevented, and an accurate potential can be measured as a constant concentration of the electrode liquid without being affected by temperature and pressure. Further, since the test liquid 8 can be cooled by providing, for example, a cooling jacket 22a between the test container 4 and the liquid junction 15, the influence of temperature from the test container 4 on the liquid junction 15 can be eliminated.
上述の如く本考案の外部照合電極によれば温度
と圧力の影響を受けることなく正確な電位を測定
することができる。 As described above, the external reference electrode of the present invention allows accurate potential measurement without being affected by temperature and pressure.
更に従来の電極に比較し非常にコンパクトでか
つ取扱いの容易な電極が実現される。 Furthermore, an electrode that is much more compact and easier to handle than conventional electrodes is realized.
第１図は従来の圧力平衡型外部照合電極の構造
図；第２図は、本考案に従う圧力平衡型外部照合
電極を用いる試験槽の構造図；第３図は本考案に
従う圧力平衡型外部照合電極の詳細な構造図であ
る。
Fig. 1 is a structural diagram of a conventional pressure-balanced external reference electrode; Fig. 2 is a structural diagram of a test chamber using a pressure-balanced external reference electrode according to the present invention; Fig. 3 is a structural diagram of a pressure-balanced external reference electrode according to the present invention. FIG. 3 is a detailed structural diagram of an electrode.
Claims (1)
の電極容器と、この電極容器内の前記電極液と高
温高圧水用試験容器内の試験液との液絡を保つた
めの液絡手段と、前記電極容器内に設けられると
ともにその一端が前記電極液に接する摺動可能な
ピストンとを備え、このピストンの他端に前記試
験容器の圧力を導くようにした高温高圧水用圧力
平衡型照合電極において、 前記試験容器の外部領域に前記電極容器と前記
液絡手段とを設け、この液絡手段に対して前記試
験容器から前記試験液を導くための伝導手段を具
備せしめたことを特徴とする外部照合電極。[Claims for Utility Model Registration] An insulating electrode container in which an electrode and an electrode solution are installed, and a liquid junction between the electrode solution in the electrode container and the test solution in a test container for high-temperature, high-pressure water. and a slidable piston provided within the electrode container and having one end in contact with the electrode liquid, the other end of the piston being adapted to guide the pressure of the test container. In a pressure-balanced reference electrode for high-temperature, high-pressure water, the electrode container and the liquid junction means are provided in an external area of the test container, and a conduction means for guiding the test liquid from the test container to the liquid junction means. An external reference electrode characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984144804U JPH0422290Y2 (en) | 1984-09-25 | 1984-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984144804U JPH0422290Y2 (en) | 1984-09-25 | 1984-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6160151U JPS6160151U (en) | 1986-04-23 |
| JPH0422290Y2 true JPH0422290Y2 (en) | 1992-05-21 |
Family
ID=30703068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984144804U Expired JPH0422290Y2 (en) | 1984-09-25 | 1984-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422290Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140143A (en) * | 1979-02-21 | 1980-11-01 | Electric Power Res Inst | Pressure balancer type external reference electrode assembly |
| JPS57125841A (en) * | 1981-01-30 | 1982-08-05 | Toshin Kogyo Kk | Internal reference electrode for corrosion testing cell in high-temperature high-pressure environment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57177162U (en) * | 1981-05-02 | 1982-11-09 |
-
1984
- 1984-09-25 JP JP1984144804U patent/JPH0422290Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140143A (en) * | 1979-02-21 | 1980-11-01 | Electric Power Res Inst | Pressure balancer type external reference electrode assembly |
| JPS57125841A (en) * | 1981-01-30 | 1982-08-05 | Toshin Kogyo Kk | Internal reference electrode for corrosion testing cell in high-temperature high-pressure environment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6160151U (en) | 1986-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3871981A (en) | In-situ oxygen detector | |
| CN108645898B (en) | Electrochemical performance testing device and electrochemical performance testing method | |
| US5611901A (en) | Oxygen measuring probe | |
| US3883408A (en) | Furnace atmosphere oxygen analysis apparatus | |
| US3498900A (en) | Corrosion-analytical monitoring apparatus | |
| JPH0422290Y2 (en) | ||
| US4543175A (en) | Ion responsive probe | |
| RU2096773C1 (en) | Gear measuring thermal conductivity | |
| RU2602757C2 (en) | Hydrogen sensor in gaseous media | |
| US5425871A (en) | Solid state reference electrode for high temperature electrochemical measurements | |
| GB2039058A (en) | Apparatus for prosimetric measurements | |
| JPS6367134B2 (en) | ||
| JPS6111642Y2 (en) | ||
| JPS6041303B2 (en) | Reference electrode and corrosion test tank that can be installed in high temperature and high pressure environments | |
| JPH0318941Y2 (en) | ||
| JP3088513B2 (en) | PH measuring device for deep sea environment measurement | |
| JPH06273374A (en) | Sensor probe for measuring solubility of oxygen in molten metal and measuring method | |
| JPH0328364Y2 (en) | ||
| JPH0330850Y2 (en) | ||
| GB2074323A (en) | Apparatus for Detecting Hydrogen Cyanide Gas | |
| JPH0537239Y2 (en) | ||
| JPS5841481Y2 (en) | Flow type concentration measuring device | |
| RU2574423C1 (en) | Hydrogen sensor in liquid and gas media | |
| JPH051904B2 (en) | ||
| KR820000563Y1 (en) | Combination electrode for imconcentration measurement of double composition type |