CN201555825U - Small-sized flat-head PCO2 electrode - Google Patents
Small-sized flat-head PCO2 electrode Download PDFInfo
- Publication number
- CN201555825U CN201555825U CN2009200746789U CN200920074678U CN201555825U CN 201555825 U CN201555825 U CN 201555825U CN 2009200746789 U CN2009200746789 U CN 2009200746789U CN 200920074678 U CN200920074678 U CN 200920074678U CN 201555825 U CN201555825 U CN 201555825U
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- China
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- electrode
- small
- flat
- head
- silver
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Abstract
The utility model discloses a small-sized flat-head PCO2 electrode which comprises an electrode contact terminal, an electrode contact ring, an electrode body, a pH electrode, a silver/silver chloride reference electrode and electrolyte solution. A sensitive film of the pH electrode is flat and the effective diameter of the flat sensitive film is smaller than 1.5mm. A flat ventilating film is arranged at the head end of the pH electrode. The small-sized flat-head PCO2 electrode utilizes the flat sensitive film to carry out sampling, can be used for carrying out PCO2 measuring on dozens of micro-liters of samples (such as blood), prolongs the service life by more than one year, and realizes free maintenance and long service life in the true sense.
Description
Technical field
The utility model relates to a kind of gas sensor, is specifically related to a kind of small-sized tack PCO
2Electrode.
Background technology
Partial pressure of carbon dioxide (the PCO of electrochemical principle
2) gas sensor (PCO
2Electrode), be that pair of electrodes (pH electrode and Ag/AgCL contrast electrode) is contained in the same outer tube, pipe end is equipped with a hydrophobic ventilated membrane, and electrolyte solution and external testing liquid in the pipe are separated.The CO that dissolves in the test fluid
2Enter electrolyte solution thin layer between pH electrode sensitive film and the ventilated membrane by ventilated membrane, make in the liquid layer H that can be measured by the pH electrode
+Activity changes.Therefore, the potential difference (PD) of pH electrode and contrast electrode is with the CO of dissolving
2The concentration of gas and changing according to the current potential of measuring, can calculate the CO in the testing sample
2Concentration (dividing potential drop).
Existing P CO
2The gas sensing electrode volume is all bigger, and the partial pressure of carbon dioxide that can not be applied to tens microlitre samples (as blood) is measured, and the electrolyte solution in the electrode tube can evaporate gradually and reduce, and causes the drift of current potential, and electrode life is shorter, only some months.
The utility model content
Technical problem to be solved in the utility model provides a kind of small-sized tack PCO
2Electrode, it can be used for the PCO of small amount of sample
2Sampling, and long service life.
For solving the problems of the technologies described above the small-sized tack PCO of the utility model
2The technical solution of electrode is:
Comprise that electrode contact, electrode touch ring, electrode body, pH electrode, silver/silver chloride contrast electrode, electrolyte solution; The afterbody of electrode body is provided with electrode and touches ring and electrode contact, and the electrode body inside of hollow is provided with the pH electrode, and the pH electrode jacket is provided with silver/silver chloride contrast electrode, and electrode is filled with electrolyte solution; The head of pH electrode stretches out electrode body; The sensitive membrane of described pH electrode is responsive flat film.
The effective diameter of the flat film of described sensitivity is less than 1.5mm.
The head end of described pH electrode is provided with ventilative flat film.
The Cl of described electrolyte solution
-Constant.
The technique effect that the utility model can reach is:
The utility model is sampled by the flat film of sensitivity, can be used for the PCO of tens microlitre samples (as blood)
2Measure, and can reach serviceable life more than 1 year, really accomplish non-maintaining, the long-life.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the small-sized tack PCO of the utility model
2The structural representation of electrode;
Fig. 2 is the head sectional view of Fig. 1.
Description of reference numerals among the figure:
1 is electrode contact, and 2 for electrode touches ring,
3 is electrolyte solution, and 4 is silver/silver chloride contrast electrode,
5 is electrode body, and 6 is the pH electrode,
7 is electrode network, and 8 are ventilative flat film,
61 is sensitive membrane.
Embodiment
As shown in Figure 1, the small-sized tack PCO of the utility model
2Electrode comprises that electrode contact 1, electrode touch ring 2, electrode body 5, pH electrode 6, silver/silver chloride contrast electrode 4, electrolyte solution 3, electrode network 7;
The afterbody of electrode body 5 is provided with electrode and touches ring 2 and electrode contact 1, and electrode body 5 inside of hollow are provided with pH electrode 6, is arranged with silver/silver chloride contrast electrode 4 outside the pH electrode 6, is filled with electrolyte solution 3 in the electrode body 5; The Cl of electrolyte solution 3
-Constant.
The head of pH electrode 6 stretches out electrode body 5, and as shown in Figure 2, the head end of pH electrode 6 is provided with ventilative flat film 8; The sensitive membrane 61 of pH electrode 6 is responsive flat film, and the effective diameter of responsive flat film is the internal diameter of pH electrode 6, and the effective diameter of responsive flat film is less than 1.5mm; The head of pH electrode 6 also is provided with electrode network 7.
Electrode contact 1, electrode touch ring 2 and are the extension line of electrode signal; Silver/silver chloride contrast electrode 4 becomes silver chloride to form by the silver surface chlorination; Electrode body 5 is made by organic glass; PH electrode 6 is a glass electrode.
During use, the flat film 8 of will breathing freely contacts with sample, can sample the CO that dissolves in the sample
2Enter the responsive flat film and the electrolyte solution thin layer of breathing freely between the flat film 8 of pH electrode 6 by ventilative flat film 8, measure CO in the sample by the flat film of sensitivity
2Concentration.Because the effective diameter of responsive flat film less than 1.5mm, only needs a spot of sample just can reach the sampling purpose, so the utility model can be used for the PCO of tens microlitre samples (as blood)
2Measure.
The utility model can reach more than 1 year serviceable life, really accomplish non-maintaining, the long-life.
Claims (4)
1. small-sized tack PCO
2Electrode comprises that electrode contact, electrode touch ring, electrode body, pH electrode, silver/silver chloride contrast electrode, electrolyte solution; The afterbody of electrode body is provided with electrode and touches ring and electrode contact, and the electrode body inside of hollow is provided with the pH electrode, and the pH electrode jacket is provided with silver/silver chloride contrast electrode, and electrode is filled with electrolyte solution; The head of pH electrode stretches out electrode body; It is characterized in that: the sensitive membrane of described pH electrode is responsive flat film.
2. small-sized tack PCO according to claim 1
2Electrode is characterized in that: the effective diameter of the flat film of described sensitivity is less than 1.5mm.
3. small-sized tack PCO according to claim 1 and 2
2Electrode is characterized in that: the head end of described pH electrode is provided with ventilative flat film.
4. small-sized tack PCO according to claim 1
2Electrode is characterized in that: the Cl of described electrolyte solution
-Constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200746789U CN201555825U (en) | 2009-11-12 | 2009-11-12 | Small-sized flat-head PCO2 electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200746789U CN201555825U (en) | 2009-11-12 | 2009-11-12 | Small-sized flat-head PCO2 electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555825U true CN201555825U (en) | 2010-08-18 |
Family
ID=42615513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200746789U Expired - Lifetime CN201555825U (en) | 2009-11-12 | 2009-11-12 | Small-sized flat-head PCO2 electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445348A (en) * | 2015-12-03 | 2016-03-30 | 上海仪电科学仪器股份有限公司 | Portable carbon dioxide gas-sensing electrode |
-
2009
- 2009-11-12 CN CN2009200746789U patent/CN201555825U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445348A (en) * | 2015-12-03 | 2016-03-30 | 上海仪电科学仪器股份有限公司 | Portable carbon dioxide gas-sensing electrode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190219 Address after: 201508 No. 1018 Weichang Road, Shanyang Town, Jinshan District, Shanghai Patentee after: Shanghai Huachen Biological Reagent Co., Ltd. Address before: 2010-20106 3rd Building, 4th Floor, No. 1295 Xinjinqiao Road, Pudong New Area, Shanghai Patentee before: Shanghai Huizhong Medical Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |
|
| CX01 | Expiry of patent term |