CN201662917U - Measuring device for electromotance - Google Patents
Measuring device for electromotance Download PDFInfo
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- CN201662917U CN201662917U CN2010201624743U CN201020162474U CN201662917U CN 201662917 U CN201662917 U CN 201662917U CN 2010201624743 U CN2010201624743 U CN 2010201624743U CN 201020162474 U CN201020162474 U CN 201020162474U CN 201662917 U CN201662917 U CN 201662917U
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- electrode
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- measuring device
- bottle
- constant temperature
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Abstract
The utility model discloses a measuring device for electromotance. The measuring device comprises a positive electrode (1), a negative electrode (2), a thermostatic bottle (3) and a top cap (4). The integral measuring device is formed in a way that a water inlet and a water outlet (5 and 6) are formed on the thermostatic bottle (3), and a positive electrode and the negative electrode (1 and 2) are inserted into electrolyte (7) inside the thermostatic bottle through the mounting hole on the top cap (4) of the thermostatic bottle (3). The positive and the negative electrodes (1 and 2) comprise electrode tubes, electrode bars and pipette solution, and are formed in a way that platinum wires (9) are mounted at the bottoms of tapered glass tubes (8) to form semi enclosed electrode tubes, the electrode bars (10) are inserted into the electrode tubes respectively, and pipette solution (11) is added into the corresponding electrode tubes. The measuring device adopts small scale integration, is convenient to move and operate, has fast measuring speed, saves experimental time, improves measuring accuracy, and is used for measuring the electromotance of a battery under different temperatures.
Description
Technical field
The utility model relates to measurement mechanism, is specifically related to a kind of measuring device of electromotive force.
Background technology
In the Physical Chemistry Experiment class of each colleges and universities' specialty chemical, substantially all comprise the determination experiment of electromotive force.There are the following problems in the student experimenting process for existing measurement mechanism: 1. the operation more complicated of draw solution in the electrode tube, usually because the gas leakage of top piston causes the leakage of U trap part, in case there is bubble to produce in the U trap, just make entire circuit " open circuit ", the operation of repeated multiple times, a large amount of time and reagent have been wasted, troublesome poeration; 2. electrolyte solution in the U trap and the junction potential between potassium chloride (KCl) saturated solution can't be eliminated, and cause the error of measurement bigger; 3. the complex structure of existing apparatus, U trap is thinner, damages easily, often needs to upgrade, and expense is higher; 4. conventional device can only be used to measure the electromotive force of battery under the room temperature, and scope of experiment is limited to.
Summary of the invention
The purpose of this utility model is: a kind of measuring device of electromotive force is provided, and this determinator miniaturization, integrated is convenient to move, handled easily, and finding speed is fast, saves experimental period, and measuring accuracy is higher, can be used for the mensuration of cell emf under the different temperatures.
Technical solution of the present utility model is: this determinator comprises positive electrode, negative electrode, constant temperature bottle and top cover, establish intake-outlet on the constant temperature bottle, positive and negative electrode inserts in the interior electrolytic solution of constant temperature bottle by the mounting hole on the constant temperature bottle top cover respectively, whole formation determinator; Described positive and negative electrode comprises electrode tube, electrode bar and electrode solution, in the bottom of tapered glass tube platinum filament is installed and is formed semi-enclosed electrode tube, and electrode bar is inserted in the electrode tube, adds corresponding electrode liquid in electrode tube, constitutes positive and negative electrode.
The utlity model has following advantage:
1. the tapered glass tube that utilizes end sealing will be isolated inside and outside electrode solution and the electrolytic solution as electrode tube, is conducted electricity by the platinum filament of electrode tube bottom, has eliminated the junction potential of liquid, and measurement result is accurate.
2. assay device structures of the present utility model is simple, with low cost, and volume is small and exquisite, and small integrated is convenient to move, and finding speed is fast.
3. adopt the constant temperature bottle to can be used for measuring the electromotive force of battery under the different temperatures.
4. the electrode solution consumption reduces, and has saved reagent, has saved experiment preparation personnel's workload, has saved the time of experiment.
5. change electrode material, electrode solution and electrolytic solution and constitute different primary elements, enlarge range of application, can in the Physical Chemistry Experiment class of institution of higher education, promote the use of.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the electrode tube structural representation of Fig. 1
Fig. 3 is the structural representation of copper zinc original battery
Fig. 4 is existing electro-motive force measurement device synoptic diagram
Among the figure: 1. positive electrode, 2. negative electrode, 3. constant temperature bottle, 4. top cover, 5. water inlet, 6. water delivering orifice, 7. electrolytic solution, 8. tapered glass tube, 9. platinum filament, 10. electrode bar, 11. electrode solution.
Embodiment
Further specify technical solution of the present utility model below in conjunction with specific embodiment, embodiment can not be interpreted as it is restriction to technical scheme.
As shown in Figure 1, 2, this determinator comprises positive electrode 1, negative electrode 2, constant temperature bottle 3 and top cover 4, establish intake-outlet 5,6 on the constant temperature bottle 3, positive and negative electrode 1,2 inserts in the interior electrolytic solution 7 of constant temperature bottle by the mounting hole on the top cover 4 of constant temperature bottle 3 respectively, whole formation determinator; Described positive and negative electrode 1,2 comprises electrode tube, electrode bar and electrode solution, in the bottom of tapered glass tube 8 platinum filament 9 is installed and is formed semi-enclosed electrode tube, electrode bar 10 is inserted in the electrode tube, and in electrode tube, add corresponding electrode liquid (11), constitute positive and negative electrode.
Experimental example: as shown in Figure 3, be example, concrete scheme of the present utility model is described with the copper zinc original battery.
The copper rod immersion is filled 0.1M CuSO
4As positive electrode, the zinc bar immersion is filled 0.1M ZnSO in the electrode tube of solution
4In the electrode tube of solution as negative electrode; Positive electrode and negative electrode are filled in the saturated potassium chloride (KCl) solution that inserts in the constant temperature bottle whole formation copper zinc original battery by the rubber top of punching; In the constant temperature bottle, feed the thermostatical circulating water of assigned temperature, promptly can be used for measuring the electromotive force of copper zinc original battery under the assigned temperature.
When measuring 20 ℃, the electromotive force of Daniell cell, the relative standard deviation of ten measurement results is 0.52%, the electromotive force of being measured and the relative error of theoretical value are 0.2%.
In like manner, change electrode material, electrode solution and electrolytic solution, constitute different primary elements, be used for the mensuration of this primary element electromotive force.
Claims (1)
1. the determinator of an electromotive force, it is characterized in that: this determinator comprises positive electrode (1), negative electrode (2), constant temperature bottle (3) and top cover (4), establish intake-outlet (5,6) on the constant temperature bottle (3), positive and negative electrode (1,2) inserts respectively in the constant temperature bottle electrolyte inside (7) by the mounting hole on the top cover (4) of constant temperature bottle (3), whole formation determinator; Described positive and negative electrode (1,2) comprises electrode tube, electrode bar and electrode solution, in the bottom of tapered glass tube (8) platinum filament (9) is installed and is formed semi-enclosed electrode tube, electrode bar (10) is inserted in the electrode tube, and in electrode tube, add corresponding electrode liquid (11), constitute positive and negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201624743U CN201662917U (en) | 2010-04-16 | 2010-04-16 | Measuring device for electromotance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201624743U CN201662917U (en) | 2010-04-16 | 2010-04-16 | Measuring device for electromotance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662917U true CN201662917U (en) | 2010-12-01 |
Family
ID=43233335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201624743U Expired - Lifetime CN201662917U (en) | 2010-04-16 | 2010-04-16 | Measuring device for electromotance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833888A (en) * | 2010-04-16 | 2010-09-15 | 淮阴师范学院 | Measuring device of electromotive force |
-
2010
- 2010-04-16 CN CN2010201624743U patent/CN201662917U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833888A (en) * | 2010-04-16 | 2010-09-15 | 淮阴师范学院 | Measuring device of electromotive force |
| CN101833888B (en) * | 2010-04-16 | 2012-05-30 | 淮阴师范学院 | Measuring device of electromotive force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101201 Effective date of abandoning: 20120530 |