CN2650126Y - Composite electrode for measuring pH value - Google Patents
Composite electrode for measuring pH value Download PDFInfo
- Publication number
- CN2650126Y CN2650126Y CNU03279018XU CN03279018U CN2650126Y CN 2650126 Y CN2650126 Y CN 2650126Y CN U03279018X U CNU03279018X U CN U03279018XU CN 03279018 U CN03279018 U CN 03279018U CN 2650126 Y CN2650126 Y CN 2650126Y
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- pressure
- gas
- electrode
- reference liquid
- liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/36—Glass electrodes
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a composite electrode with an external reference solution pressurizing structure for measuring the PH value of solution, wherein, the pressurizing structure consists of a gas storage chamber, a pressurizing pipe, an one-way valve, a pressure indicating tube, and a spacing ring; the gas storage chamber is located at the middle part between a glass inner pipe and a glass outer pipe, the gas pressurizing pipe is inserted in an outer sealing agent and an outer sealing ring, the one-way valve is arranged at one end of the pressurizing pipe into the gas storage chamber, the pressure indicating pipe is placed in the external reference solution with the opening downward, the spacing ring is placed on the surface of the external reference solution. The composite electrode has the advantages of high applicability, high measurement accuracy, and high reliability.
Description
Technical field
The utility model relates to electrochemical analytical instrument, particularly a kind of measurement pH value combination electrode.
Background technology
When measuring pH value, behind combination electrode (sensitive electrode and outer contrast electrode) insertion detected solution, at current potential of the surface of its sensitive electrode generation, the pH value of potential value and solution has certain mathematical relation.Instrument converts the potential value that measures to corresponding pH value of solution value through data processing, and directly shows.Existing combined electrode structure, the pressure of its outer reference liquid is very nearly the same with the pressure of measurement solution when measuring.Particularly in some production occasion, the pressure of detected solution is changeable, even surpasses the pressure of outer reference liquid.So not only cause liquid to connect the liquid junction potential shakiness of boundary's (being installed on) near on the glass outer tube of pH sensitive electrode; And detected solution can enter outer reference liquid by the micropore permeation that liquid meets the boundary, causes outer reference potential instability, thereby causes measuring error.
Summary of the invention
The utility model is subject to reference liquid outside variation of detected solution pressure and the osmosis pollution and causes the existing technical matters of measuring error in order to solve existing combination electrode, and a kind of externally combination electrode of reference liquid pressure structure that has is provided.
According to above-mentioned purpose, the utility model provides a kind of measurement pH value combination electrode, connect boundary, outer contrast electrode, outer reference liquid, exterior seal ring, external seal agent, electrode outlet line by sensitive electrode, glass inner tube, internal reference electrode, interior reference liquid, inner seal ring, interior sealant, glass outer tube, liquid, also have pressure structure to form; Wherein pressure structure is made up of gas dome, gas-adding pipe, one-way cock, pressure inditron, cage ring; The middle part of gas dome between glass inner tube and glass outer tube wherein, gas-adding pipe is interspersed to be installed in external seal agent and the exterior seal ring, one-way cock is installed in the end that gas-adding pipe stretches into gas dome, and pressure inditron mouth down is placed in the outer reference liquid, and cage ring is placed on the outer reference liquid level.
Said structure, wherein one-way cock adopts special charging valve.
Said structure, wherein gas dome is filled with the pressurized air of 0.3MPa pressure.
Therefore the utility model has the adaptation environment for use owing to taked above technical measures, measures advantage accurately and reliably.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
As shown in the figure, a kind of measurement pH value combination electrode, connect boundary 8, outer contrast electrode 9, outer reference liquid 10, exterior seal ring 11, external seal agent 12, electrode outlet line 13 by sensitive electrode 1, glass inner tube 2, internal reference electrode 3, interior reference liquid 4, inner seal ring 5, interior sealant 6, glass outer tube 7, liquid, also have pressure structure to form; Wherein pressure structure is made up of gas dome 14, gas-adding pipe 15, one-way cock 16, pressure inditron 17, cage ring 18; The middle part of gas dome 14 between glass inner tube 2 and glass outer tube 7 wherein, gas-adding pipe 15 interspersed being installed in external seal agent 12 and the exterior seal ring 11, one-way cock 16 is installed in the end that gas-adding pipe 15 stretches into gas dome 14, pressure inditron 17 mouth downs are placed in the outer reference liquid 10, and cage ring 18 is placed on 10 of the outer reference liquids.
The utility model and existing difference of measuring pH value usefulness combination electrode have been to increase the pressure structure of an external reference liquid 10.Wherein one-way cock 16 can adopt special charging valve, and its volume is small, the valve inside in the similar bicycle tyre.When the other end that exposes by gas-adding pipe 15 during to gas dome 14 inflation, one-way cock 16 is opened, pressurized air is through cage ring 18 outside reference liquid 10 pressurizations, the liquid of being made by porous ceramics this moment connects boundary's 8 sealed glue (not drawing among the figure) and seals, air in the pressure inditron 17 is subjected to the pressure of outer reference liquid 10 increases and compresses, make the outer reference liquid 10 of part enter pressure inditron 17, when representing the pressurized air of gas dome 14 existing 0.3MPa (about 3 atmospheric pressure), pressure inditron 17 high scales stop inflation, one-way cock 16 is promptly closed, and then at combination electrode upper end installing electrodes cap 19.
During measurement, the fluid sealant that earlier liquid is connect in the boundary 8 divests, combination electrode is inserted in the measured solution again, because outer reference liquid 10 has the pressure of 0.3Mpa, detected solution can not entered by the micropore permeation that liquid connects in the boundary 8, thereby it is stable to have guaranteed that liquid connects the current potential of boundary 8, outer reference liquid 10, has improved accuracy of measurement.Along with slowly exosmosing of outer reference liquid 10, its pressure also slowly descends, when dropping to when maintaining an equal level with detected solution pressure (being ambient atmosphere pressure), also near serviceable life of this combination electrode.
Claims (3)
1. measure pH value combination electrode for one kind, connect boundary (8), outer contrast electrode (9), outer reference liquid (10), exterior seal ring (11), external seal agent (12), electrode outlet line (13) by sensitive electrode (1), glass inner tube (2), internal reference electrode (3), interior reference liquid (4), inner seal ring (5), interior sealant (6), glass outer tube (7), liquid, it is characterized in that: also have pressure structure to form; Wherein pressure structure is made up of gas dome (14), gas-adding pipe (15), one-way cock (16), pressure inditron (17), cage ring (18); Wherein gas dome (14) is positioned at the middle part between glass inner tube (2) and the glass outer tube (7), gas-adding pipe (15) is interspersed to be installed in external seal agent (12) and the exterior seal ring (11), one-way cock (16) is installed in the end that gas-adding pipe (15) stretches into gas dome (14), pressure inditron (17) mouth down is placed in the outer reference liquid (10), and cage ring (18) is placed on outer reference liquid (10) face.
2. combination electrode according to claim 1 is characterized in that: wherein one-way cock (16) adopts special charging valve.
3. combination electrode according to claim 1 is characterized in that: wherein gas dome (14) is filled with the pressurized air of 0.3Mpa pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03279018XU CN2650126Y (en) | 2003-09-29 | 2003-09-29 | Composite electrode for measuring pH value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03279018XU CN2650126Y (en) | 2003-09-29 | 2003-09-29 | Composite electrode for measuring pH value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650126Y true CN2650126Y (en) | 2004-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU03279018XU Expired - Lifetime CN2650126Y (en) | 2003-09-29 | 2003-09-29 | Composite electrode for measuring pH value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650126Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080632B (en) * | 2004-12-15 | 2011-11-23 | 东亚Dkk株式会社 | Electrochemical sensor and process for producing the same |
| CN101460834B (en) * | 2006-04-13 | 2012-10-03 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Electrochemical sensor |
| CN102879450A (en) * | 2012-09-28 | 2013-01-16 | 招远市大明仪表有限公司 | Multi-parameter sensor for pH, conductivity and temperature |
| CN102914579A (en) * | 2012-09-28 | 2013-02-06 | 招远市大明仪表有限公司 | Charging pH value sensor |
| CN104515794A (en) * | 2015-01-06 | 2015-04-15 | 上海今见电子科技有限公司 | PH/ORP (Potential of Hydrogen/Oxidation-Reduction Potential) sensor |
| CN105829878A (en) * | 2013-12-18 | 2016-08-03 | 东亚Dkk株式会社 | Electrode unit and liquid junction member |
| CN106066345A (en) * | 2016-07-06 | 2016-11-02 | 江苏智慧农业技术有限公司 | A kind of pH sensor used for aquiculture |
| CN106970126A (en) * | 2015-12-21 | 2017-07-21 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method and apparatus for producing reference electrode |
-
2003
- 2003-09-29 CN CNU03279018XU patent/CN2650126Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080632B (en) * | 2004-12-15 | 2011-11-23 | 东亚Dkk株式会社 | Electrochemical sensor and process for producing the same |
| CN101460834B (en) * | 2006-04-13 | 2012-10-03 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Electrochemical sensor |
| CN102879450A (en) * | 2012-09-28 | 2013-01-16 | 招远市大明仪表有限公司 | Multi-parameter sensor for pH, conductivity and temperature |
| CN102914579A (en) * | 2012-09-28 | 2013-02-06 | 招远市大明仪表有限公司 | Charging pH value sensor |
| CN105829878A (en) * | 2013-12-18 | 2016-08-03 | 东亚Dkk株式会社 | Electrode unit and liquid junction member |
| CN105829878B (en) * | 2013-12-18 | 2018-11-13 | 东亚Dkk株式会社 | Electrode body and liquid relay part |
| CN104515794A (en) * | 2015-01-06 | 2015-04-15 | 上海今见电子科技有限公司 | PH/ORP (Potential of Hydrogen/Oxidation-Reduction Potential) sensor |
| CN104515794B (en) * | 2015-01-06 | 2017-10-24 | 上海今见电子科技有限公司 | PH/ORP sensors |
| CN106970126A (en) * | 2015-12-21 | 2017-07-21 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method and apparatus for producing reference electrode |
| CN106970126B (en) * | 2015-12-21 | 2020-08-21 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method and device for producing a reference electrode |
| CN106066345A (en) * | 2016-07-06 | 2016-11-02 | 江苏智慧农业技术有限公司 | A kind of pH sensor used for aquiculture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI INESA SCIENTIFIC INSTRUMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI PRECISION + SCIENTIFIC INSTRUMENT CO., LTD. Effective date: 20120822 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200233 XUHUI, SHANGHAI TO: 201805 JIADING, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120822 Address after: 201805 Shanghai City, Anting, Miquan Road, No. 111, room 2, building 101, room Patentee after: INESA Scientific Instrument Co., Ltd. Address before: 200233 No. 168, Shanghai, Tianlin Road Patentee before: Shanghai Co., Ltd of Fine Scientific Instruments |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130929 Granted publication date: 20041020 |