JPH09329581A - Hardness sensor - Google Patents
Hardness sensorInfo
- Publication number
- JPH09329581A JPH09329581A JP8168216A JP16821696A JPH09329581A JP H09329581 A JPH09329581 A JP H09329581A JP 8168216 A JP8168216 A JP 8168216A JP 16821696 A JP16821696 A JP 16821696A JP H09329581 A JPH09329581 A JP H09329581A
- Authority
- JP
- Japan
- Prior art keywords
- ion
- electrode
- sensitive
- solution
- hardness sensor
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、軟水器等に付設
する硬度センサに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hardness sensor attached to a water softener or the like.
【０００２】[0002]
【従来の技術】従来の硬度センサ３１は、図３に示すよ
うに、比較電極部３２とイオン電極部３３とを電極本体
３４に内蔵した構造のものであって、前記両電極部３
２，３３を被測定液に浸漬し、両電極間の電位差を検出
することにより被測定液のカルシウムイオン濃度（硬
度）を測定するものである。前記イオン電極部３３は、
イオン電極室３５，イオン用内部電極（塩化銀）３６お
よび前記イオン電極室３５の底部に開口した穴３７の裏
側に装着したイオン感応膜３８と、前記イオン電極室３
５に充填してあるイオン電極内部液３９により構成され
ている。前記イオン感応膜３８は、所定容器（たとえ
ば、直径１５０mmの容器）内にイオン感応溶液を注入
し、このイオン感応溶液に樹脂製ネットを浸漬し、この
ネットの全体にイオン感応溶液を付着させた後、このネ
ットを乾燥させてイオン感応膜シートを形成する。そし
て、このイオン感応膜シート（直径１５０mmの円形シー
ト）から所定形状（たとえば、直径１０mm）のイオン感
応膜３８を切り抜いている。したがって、高価なイオン
感応膜シートの歩留りは悪く、コスト高となっている。
また、前記イオン感応膜３８は、乾燥したイオン感応膜
シートより切り抜いて形成しているので、硬度センサ３
１のイオン感応膜嵌合部４０へ装着するとき端部に接着
不良が生じ脱落し易く問題となっている。2. Description of the Related Art As shown in FIG. 3, a conventional hardness sensor 31 has a structure in which a reference electrode portion 32 and an ion electrode portion 33 are built in an electrode body 34.
2, 33 is immersed in the liquid to be measured, and the potential difference between both electrodes is detected to measure the calcium ion concentration (hardness) of the liquid to be measured. The ion electrode part 33 is
The ion electrode chamber 35, the ion internal electrode (silver chloride) 36, and the ion sensitive film 38 mounted on the back side of the hole 37 opened at the bottom of the ion electrode chamber 35, and the ion electrode chamber 3
5 is composed of the ion electrode internal liquid 39 filled in 5. The ion-sensitive film 38 is prepared by injecting an ion-sensitive solution into a predetermined container (for example, a container having a diameter of 150 mm), immersing a resin net in the ion-sensitive solution, and adhering the ion-sensitive solution to the entire net. Then, this net is dried to form an ion-sensitive membrane sheet. Then, from this ion-sensitive film sheet (circular sheet having a diameter of 150 mm), an ion-sensitive film 38 having a predetermined shape (for example, a diameter of 10 mm) is cut out. Therefore, the yield of the expensive ion-sensitive membrane sheet is poor and the cost is high.
Further, since the ion-sensitive film 38 is formed by cutting out from a dry ion-sensitive film sheet, the hardness sensor 3
When it is attached to the ion-sensitive membrane fitting portion 40 of No. 1, there is a problem that adhesion failure occurs at the end portion and the piece easily comes off.
【０００３】[0003]
【発明が解決しようとする課題】この発明は、上記問題
点に鑑み、硬度センサに用いるイオン感応膜のコスト低
減と接着不良をなくすることのできる硬度センサを提供
することを目的とするものである。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a hardness sensor which can reduce the cost of the ion-sensitive film used for the hardness sensor and eliminate adhesion failure. is there.
【０００４】[0004]
【課題を解決するための手段】この発明は、前記課題を
解決するためになされたものであって、請求項１に記載
の発明は、イオン電極部と比較電極部とを電極本体に内
蔵した硬度センサにおいて、前記イオン電極部を構成す
るイオン電極室内の底部にイオン感応膜を収納したこと
を特徴としており、また請求項２に記載の発明は、前記
イオン電極室内の底部に開口部を設け、この開口部の上
に前記イオン電極室と略同形のベース部材を載置し、こ
のベース部材の上面に前記開口部より大きい形状のケー
シングを設け、このケーシング内にイオン感応溶液を乾
燥して形成したイオン感応膜を収納したことを特徴とし
ている。The present invention has been made to solve the above problems, and the invention according to claim 1 has an ion electrode part and a reference electrode part built in an electrode body. In the hardness sensor, an ion sensitive film is housed in the bottom of the ion electrode chamber that constitutes the ion electrode section, and the invention according to claim 2 provides an opening in the bottom of the ion electrode chamber. , A base member having substantially the same shape as the ion electrode chamber is placed on the opening, a casing having a shape larger than the opening is provided on the upper surface of the base member, and the ion-sensitive solution is dried in the casing. It is characterized by containing the formed ion-sensitive membrane.
【０００５】[0005]
【発明の実施の形態】つぎに、この発明の実施の形態に
ついて説明すると、この発明は、軟水器に付設の硬度セ
ンサにおいて実現される。前記硬度センサは、比較電極
部とイオン電極部とを電極本体に内蔵した構成のもので
あって、前記両電極部を被測定液に浸漬し、両電極間の
電位差を検出することにより被測定液のカルシウムイオ
ン濃度（硬度）を測定するものである。この発明に係る
前記イオン電極部は、イオン電極室と、このイオン電極
室に充填したイオン電極内部液（塩化カリウム飽和液）
とイオン用内部電極および前記イオン電極室内の底部に
設けた開口部の上に収納したイオン感応膜から構成され
ている。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. The present invention is realized by a hardness sensor attached to a water softener. The hardness sensor has a structure in which a reference electrode portion and an ion electrode portion are built in an electrode body, and the both electrode portions are immersed in a liquid to be measured and the potential difference between the both electrodes is detected to be measured. The calcium ion concentration (hardness) of the liquid is measured. The ion electrode part according to the present invention includes an ion electrode chamber and an ion electrode internal liquid (potassium chloride saturated liquid) filled in the ion electrode chamber.
And an inner electrode for ions and an ion-sensitive film housed on an opening provided at the bottom of the ion electrode chamber.
【０００６】前記イオン感応膜は、前記硬度センサの組
立前の状態，すなわち前記電極本体内にイオン電極部と
比較電極部を構成する部材を内蔵する前に、前記イオン
電極室の底部に設けた開口部の上に、前記イオン電極室
と略同形のベース部材を載置し、このベース部材の上面
に前記開口部より大きい形状のケーシングを設け、この
ケーシング内へイオン感応溶液を所定量注入し、このケ
ーシング内においてイオン感応溶液を乾燥させてイオン
感応膜を形成したものである。The ion-sensitive film is provided at the bottom of the ion electrode chamber before the hardness sensor is assembled, that is, before the members constituting the ion electrode part and the reference electrode part are built in the electrode body. A base member having substantially the same shape as the ion electrode chamber is placed on the opening, a casing having a shape larger than the opening is provided on the upper surface of the base member, and a predetermined amount of the ion-sensitive solution is injected into the casing. The ion-sensitive film is formed by drying the ion-sensitive solution in this casing.
【０００７】前記イオン感応膜は、ケーシング内へ所定
量のイオン感応溶液を注入し、このイオン感応溶液を乾
燥させてイオン感応膜を形成するので、従来のイオン感
応膜に比し、高価なイオン感応溶液の歩留りは大幅に向
上する。また、イオン感応膜をイオン電極室内に収納し
たので、接着不良等による脱落も発生しなくなり硬度セ
ンサのコストを低減することができる。Since the ion sensitive membrane is formed by injecting a predetermined amount of the ion sensitive solution into the casing and drying the ion sensitive solution to form the ion sensitive membrane, the ion sensitive membrane is more expensive than the conventional ion sensitive membrane. The yield of the sensitive solution is greatly improved. Further, since the ion-sensitive film is housed in the ion electrode chamber, it does not fall off due to defective adhesion or the like, and the cost of the hardness sensor can be reduced.
【０００８】[0008]
【実施例】以下、この発明の実施例を図面に基づいて詳
細に説明する。図１は、この発明を実施した硬度センサ
を断面して示す概略説明図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic explanatory view showing a cross section of a hardness sensor embodying the present invention.
【０００９】図１において、この発明を実施した硬度セ
ンサ１は、電極本体２にイオン電極部３と比較電極部４
とを一体的に内蔵した構成のもので、前記イオン電極部
３と比較電極部４を被測定液に浸漬し、前記両電極部
３，４間の電位差を検出することにより、被測定液のカ
ルシウムイオン濃度（硬度）を測定するものである。Referring to FIG. 1, a hardness sensor 1 embodying the present invention includes an electrode body 2, an ion electrode portion 3 and a comparison electrode portion 4.
Of the liquid to be measured by immersing the ion electrode part 3 and the reference electrode part 4 in the liquid to be measured and detecting the potential difference between the two electrode parts 3 and 4. The calcium ion concentration (hardness) is measured.
【００１０】前記電極本体２に内蔵した前記イオン電極
部３と比較電極部４は、前記電極本体２内にいずれも円
筒状のイオン電極室５および比較電極室６を形成すると
ともに、両電極室５，６の各底部には開口部７，８がそ
れぞれ設けられており、また両電極室５，６の各上部に
は後述の内部電極を挿入し締結するための穴９，１０が
それぞれ設けられている。前記両電極室５，６内には、
所定長さのイオン用内部電極１１と比較用内部電極１２
がそれぞれ挿入してあり、その各上部には電気的絶縁材
１３，１４を貫通突出した状態で該絶縁材１３，１４に
それぞれ固定されている。この両絶縁材１３，１４は、
前記両電極室５，６の上部に設けた各穴９，１０に適宜
の手段でそれぞれ装着されている。一方、前記イオン電
極室５の底部に設けた開口部７の上にイオン感応膜１５
が収納してある。このイオン感応膜１５を通じて、前記
イオン電極室５内に充填してあるイオン電極内部液１６
と外部の被測定液とが、特定のカルシウムイオンについ
て導通状態になるように構成されている。また、前記比
較電極室６の下部に設けた開口部８には、多孔質材料か
らなる液絡部材１７が装着してあり、この液絡部材１７
を通じて、前記比較電極室６内に充填してある比較電極
内部液１８と外部の被測定液とが連通するように構成さ
れている。図中の符号１９はケーブルであり、また符号
２０はキャップである。The ion electrode part 3 and the reference electrode part 4 built in the electrode body 2 both form a cylindrical ion electrode chamber 5 and a reference electrode chamber 6 in the electrode body 2, and both electrode chambers are formed. Openings 7 and 8 are provided at the bottoms of 5 and 6, respectively, and holes 9 and 10 for inserting and fastening internal electrodes, which will be described later, are provided at the upper portions of both electrode chambers 5 and 6, respectively. Has been. In the both electrode chambers 5 and 6,
Internal electrode 11 for ions and internal electrode 12 for comparison of predetermined length
Are respectively inserted, and the upper portions thereof are respectively fixed to the insulating materials 13 and 14 in a state of protruding through the electrical insulating materials 13 and 14. Both insulating materials 13 and 14 are
The holes 9 and 10 provided in the upper portions of the two electrode chambers 5 and 6 are mounted by appropriate means. On the other hand, the ion sensitive film 15 is formed on the opening 7 provided at the bottom of the ion electrode chamber 5.
Is stored. Through the ion-sensitive film 15, the ion electrode internal liquid 16 filled in the ion electrode chamber 5
And the external measured liquid are configured to be in a conductive state for specific calcium ions. A liquid junction member 17 made of a porous material is attached to the opening 8 provided in the lower portion of the comparison electrode chamber 6, and the liquid junction member 17 is provided.
The reference electrode internal liquid 18 filled in the reference electrode chamber 6 communicates with the external test liquid. Reference numeral 19 in the drawing is a cable, and reference numeral 20 is a cap.
【００１１】この発明の硬度センサ１に用いるイオン感
応膜１５は、図２に示すように、前記硬度センサ１の組
立前の状態，すなわち前記電極本体２内にイオン電極部
３と比較電極部４を構成する部材を内蔵する前に、前記
イオン電極室５の底部に設けた開口部７の上に、前記イ
オン電極室５の横断面形状と略同形のテフロンフィルタ
ーからなるベース部材２１を載置し、このベース部材２
１の上面に前記開口部７より大きい形状を有する筒状の
ケーシング２２を設け、このケーシング２２内へイオン
感応溶液２３を注入容器２４から所定量注入し、これを
乾燥させて形成したものである。すなわち、この発明に
おけるイオン感応膜１５は、前記ケーシング２２内に収
納されている。As shown in FIG. 2, the ion sensitive film 15 used in the hardness sensor 1 of the present invention is in a state before the hardness sensor 1 is assembled, that is, in the electrode body 2, the ion electrode portion 3 and the comparison electrode portion 4 are provided. Before incorporating the member constituting the above, a base member 21 made of a Teflon filter having substantially the same cross-sectional shape as the ion electrode chamber 5 is placed on the opening 7 provided at the bottom of the ion electrode chamber 5. This base member 2
A cylindrical casing 22 having a shape larger than that of the opening 7 is provided on the upper surface of 1, and a predetermined amount of an ion-sensitive solution 23 is injected into the casing 22 from an injection container 24 and dried. . That is, the ion-sensitive film 15 in this invention is housed in the casing 22.
【００１２】前記イオン感応膜１５が形成された後、電
極本体２内にイオン電極部３と比較電極部４とを構成す
る各部材をそれぞれ内蔵して硬度センサ１の組立を完了
させる。After the ion-sensitive film 15 is formed, the respective members constituting the ion electrode part 3 and the reference electrode part 4 are built in the electrode body 2 to complete the assembly of the hardness sensor 1.
【００１３】前記構成の硬度センサ１によれば、ケーシ
ング２２内へ所定量のイオン感応溶液２３を注入し、こ
のイオン感応溶液２３を乾燥させてイオン感応膜１５を
形成したので、従来のイオン感応膜に比し、高価なイオ
ン感応溶液の歩留りは大幅に向上する。また、イオン感
応膜１５を前記イオン電極室５内に収納したので、接着
不良等による脱落も発生しなくなり、硬度センサ１のコ
ストを低減することができる。According to the hardness sensor 1 having the above structure, the ion sensitive solution 23 is injected into the casing 22 and the ion sensitive solution 23 is dried to form the ion sensitive film 15. Therefore, the conventional ion sensitive solution is used. The yield of expensive ion-sensitive solution is significantly improved as compared with the membrane. In addition, since the ion sensitive film 15 is housed in the ion electrode chamber 5, the ion sensitive film 15 does not fall off due to poor adhesion or the like, and the cost of the hardness sensor 1 can be reduced.
【００１４】なお、この発明におけるイオン感応膜１５
は、前記のごとく、前記イオン電極室５内において形成
する実施例に限定されるものではなく、予めイオン感応
膜１５を形成し、これを硬度センサ１の組立時に前記イ
オン電極室５内へ収納することもでき、実施に応じて適
宜選択することができる。Incidentally, the ion sensitive film 15 in the present invention.
As described above, the present invention is not limited to the embodiment formed in the ion electrode chamber 5, but the ion sensitive film 15 is formed in advance and is housed in the ion electrode chamber 5 when the hardness sensor 1 is assembled. It can also be done and can be appropriately selected depending on the implementation.
【００１５】[0015]
【発明の効果】以上説明したように、この発明によれ
ば、硬度センサを構成するイオン電極室の底部にイオン
感応膜を収納したので、従来のように接着不良等による
脱落はなく、またイオン電極室の底部に設けられた開口
部の上にベース部材を載置し、このベース部材の上面に
ケーシングを設け、このケーシング内においてイオン感
応溶液を乾燥させてイオン感応膜を形成したので、従来
のイオン感応膜に比し、高価なイオン感応溶液の歩留り
が向上するので、硬度センサのコストを低減することが
できる。As described above, according to the present invention, since the ion sensitive film is housed in the bottom of the ion electrode chamber constituting the hardness sensor, the ion sensitive film does not fall off due to poor adhesion or the like unlike the conventional case, and the ion is not removed. Since the base member is placed on the opening provided at the bottom of the electrode chamber, the casing is provided on the upper surface of the base member, and the ion-sensitive solution is dried in the casing to form the ion-sensitive film. Since the yield of the expensive ion-sensitive solution is improved as compared with the ion-sensitive film of (1), the cost of the hardness sensor can be reduced.
【図１】この発明を実施した硬度センサを断面して示す
説明図である。FIG. 1 is an explanatory view showing a cross section of a hardness sensor embodying the present invention.
【図２】この発明のイオン感応膜の製造過程を概略的に
示す説明図である。FIG. 2 is an explanatory view schematically showing the manufacturing process of the ion-sensitive film of the present invention.
【図３】従来の硬度センサを断面して示す説明図であ
る。FIG. 3 is an explanatory view showing a cross section of a conventional hardness sensor.
１ 硬度センサ ２ 電極本体 ３ イオン電極部 ４ 比較電極部 ５ イオン電極室 ７ 開口部 １５ イオン感応膜 ２１ ベース部材 ２２ ケーシング ２３ イオン感応溶液 1 Hardness Sensor 2 Electrode Main Body 3 Ion Electrode Part 4 Reference Electrode Part 5 Ion Electrode Chamber 7 Opening Part 15 Ion Sensitive Membrane 21 Base Member 22 Casing 23 Ion Sensitive Solution
Claims (2)
本体２に内蔵した硬度センサ１において、前記イオン電
極部３を構成するイオン電極室５内の底部にイオン感応
膜１５を収納したことを特徴とする硬度センサ。1. In a hardness sensor 1 having an ion electrode part 3 and a comparison electrode part 4 built in an electrode body 2, an ion sensitive film 15 is housed at the bottom of an ion electrode chamber 5 constituting the ion electrode part 3. A hardness sensor characterized in that
を設け、この開口部７の上に前記イオン電極室５と略同
形のベース部材２１を載置し、このベース部材２１の上
面に前記開口部７より大きい形状のケーシング２２を設
け、このケーシング２２内にイオン感応溶液２３を乾燥
して形成したイオン感応膜１５を収納したことを特徴と
する硬度センサ。2. An opening 7 is provided at the bottom of the ion electrode chamber 5.
A base member 21 having substantially the same shape as the ion electrode chamber 5 is placed on the opening 7, and a casing 22 having a shape larger than the opening 7 is provided on the upper surface of the base member 21. A hardness sensor having an ion-sensitive film 15 formed by drying the ion-sensitive solution 23 therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8168216A JPH09329581A (en) | 1996-06-07 | 1996-06-07 | Hardness sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8168216A JPH09329581A (en) | 1996-06-07 | 1996-06-07 | Hardness sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09329581A true JPH09329581A (en) | 1997-12-22 |
Family
ID=15863950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8168216A Pending JPH09329581A (en) | 1996-06-07 | 1996-06-07 | Hardness sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09329581A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024544A (en) * | 2005-07-12 | 2007-02-01 | Horiba Ltd | Composite electrode for measuring ion concentration, and ion concentration monitor |
| PL424285A1 (en) * | 2018-01-16 | 2019-07-29 | Edward Reszke | Method for galvanic measurement of a degree of physical treatment of liquid before and after the treatment process, and the galvanic sensor of a degree of physical treatment of liquid before and after the treatment process |
-
1996
- 1996-06-07 JP JP8168216A patent/JPH09329581A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024544A (en) * | 2005-07-12 | 2007-02-01 | Horiba Ltd | Composite electrode for measuring ion concentration, and ion concentration monitor |
| PL424285A1 (en) * | 2018-01-16 | 2019-07-29 | Edward Reszke | Method for galvanic measurement of a degree of physical treatment of liquid before and after the treatment process, and the galvanic sensor of a degree of physical treatment of liquid before and after the treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4565665A (en) | Flow through ion selective electrode | |
| US4519973A (en) | Ion selective membranes for use in ion sensing electrodes | |
| US4600495A (en) | Flow through ion selective electrode | |
| US4077861A (en) | Polarographic sensor | |
| US4565666A (en) | Method of producing combination ion selective sensing electrode | |
| AU2002236061B2 (en) | Electrochemical gas sensor | |
| US3211638A (en) | Electrode assembly | |
| US7077938B1 (en) | Electrochemical gas sensor | |
| US5147524A (en) | pH sensor | |
| JPS6236176B2 (en) | ||
| US4053382A (en) | Liquid junction of reference electrode | |
| US5547554A (en) | Electrochemical measuring cell having a gas-permeable housing | |
| AU2002236061A1 (en) | Electrochemical gas sensor | |
| WO1982000161A1 (en) | Electrochemical gas sensor,electrodes therefor and methods of making said sensor and electrodes | |
| JPS5910610Y2 (en) | Liquid film ion selective electrode | |
| JPH09329581A (en) | Hardness sensor | |
| US4620918A (en) | Selective sensor construction | |
| JP2004294079A (en) | Manufacturing method of gas sensor | |
| US20030159930A1 (en) | Electrochemical gas sensor with nonplanar diffusion membrane and electrode array | |
| US4450064A (en) | Electrochemical gas sensor and method for producing the same | |
| CN201043962Y (en) | Oxygen sensor | |
| US6129824A (en) | Electrochemical sensor for the detection of hydrogen chloride | |
| CN109387551A (en) | Manufacture method, ISE half-cell, sensor and the multi-parameter sensor of ISE half-cell | |
| CA1226899A (en) | Electrochemical measuring cell | |
| CN219737359U (en) | PVC membrane ion selective electrode structure |