CN204220165U - A kind of thermostat accurately measured for auxiliary pH meter - Google Patents
A kind of thermostat accurately measured for auxiliary pH meter Download PDFInfo
- Publication number
- CN204220165U CN204220165U CN201420577017.9U CN201420577017U CN204220165U CN 204220165 U CN204220165 U CN 204220165U CN 201420577017 U CN201420577017 U CN 201420577017U CN 204220165 U CN204220165 U CN 204220165U
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- beaker
- sample solution
- standard liquid
- temperature
- meter
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Abstract
The utility model describes a kind of thermostat accurately measured for auxiliary pH meter, comprises probe, base, heat-insulation layer, central processing unit and plug; According to isothermal Measurement principle, when using pH meter to measure, by the acting in conjunction of heater and cooling module, sample solution and standard liquid are placed on identical with stationary temperature under measure, reduce the impact that temperature is measured pH meter, improve the certainty of measurement of pH meter; In addition, the utility model is provided with magnetic stirring apparatus on base, automatically can carry out continual stirring to the sample solution in beaker or standard liquid, makes that sample solution and standard liquid mix, homogeneous heating, reduces the measure error of pH value further.
Description
Technical field
The utility model relates to pH value fields of measurement, particularly a kind of thermostat accurately measured for auxiliary pH meter.
Background technology
At chemical field, often need to measure accurate pH value.
For pH electrode, it is 0.003pH/ DEG C that temperature affects each pH, the such as pH meter of 0.2 grade, calibrate in 30 DEG C of pH buffer solutions, but the solution (assuming that the pH scope of solution differs a pH unit between pH6 ~ 8 with pH7.00) of test 60 DEG C, then the worst error of temperature impact is exactly 30 × 0.003=0.09pH; If 3 pH units (in the scope of pH4 ~ 10), worst error is exactly 0.27pH, therefrom can find out that the impact of temperature on pH is very large.
For existing pH meter, according to the Operation Definition that pH measures, accurate measurement result be expected, sample solution and standard liquid should identical with stationary temperature under measure, i.e. isothermal Measurement principle.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of thermostat accurately measured for auxiliary pH meter, according to isothermal Measurement principle, when using pH meter to measure, measure under sample solution and standard liquid being placed on identical and stationary temperature, reduce the impact that temperature is measured pH meter, improve the certainty of measurement of pH meter.
In order to realize the object solved the problems of the technologies described above, the utility model have employed following technical scheme:
A kind of thermostat accurately measured for auxiliary pH meter of the present utility model, comprises probe, base, heat-insulation layer, central processing unit and plug.
Described probe comprises temperature sensor, and probe is connected with central processing unit, for the temperature signal of sample solution or standard liquid is transferred to central processing unit.
Described base is boss-shaped structure, for carrying the beaker that sample solution or standard liquid are housed; The contact surface of base and beaker is provided with heater, and heater contacts with beaker, for heating sample solution in beaker or standard liquid.
Described heat-insulation layer is columnar structured; Heat-insulation layer is arranged on base, take base the end of as, and with base in conjunction with formation accommodating cavity, accommodating cavity is equipped with the beaker of sample solution or standard liquid for placing; Heat-insulation layer inwall contacts with the wall of cup of the beaker that sample solution or standard liquid are housed; Heat-insulation layer inwall is provided with groove, for placing cooling module; Described cooling module contacts with the wall of cup of the beaker that sample solution or standard liquid are housed, for reducing the temperature of the sample solution in beaker or standard liquid.
Described central processing unit comprises microprocessor, control unit and display module; After the temperature signal of microprocessor receiving transducer, control heater or cooling module work by control unit, the sample solution in beaker or standard liquid are maintained predetermined temperature; Described display module is for showing sample solution in beaker or whether standard liquid reaches steady temperature.
Described plug externally connects power supply, is connected with heater and cooling module by central processing unit, powers for giving central processing unit, heater and cooling module.
Concrete: described heater is PTC ceramic heating flake or heating resistance wire.
Concrete: described cooling module is the flexible pipe that water inlet is equipped with miniature electromagnetic valve, the temperature of sample solution in beaker or standard liquid is reduced by the cold water in flexible pipe.Concrete further, the radian of the interior curvature of flexible pipe and the outer wall of beaker matches.
Concrete: described central processing unit also comprises temperature setting module, for presetting the steady temperature that will reach.
Concrete: described central processing unit is arranged in base.
Concrete: described display module is a red light emitting diodes and a green LED; If the temperature of the sample solution in beaker or standard liquid does not reach predetermined temperature, then red light emitting diodes is luminous, if the temperature of the sample solution in beaker or standard liquid maintains predetermined temperature, then green LED is luminous.
Concrete further: described display module also comprises a LED display and buzzer; LED display for showing the real-time temperature of sample solution in cup or standard liquid, the sounding when temperature of the sample solution of buzzer in beaker or standard liquid reaches predetermined temperature.
Concrete: described base center is provided with magnetic stirring apparatus, and heater is arranged around magnetic stirring apparatus on base.
Using method: during use, connects 220V civil power by plug, by temperature setting module, predetermined temperature is adjusted to design temperature; The beaker that standard liquid is housed is placed in accommodating cavity, in the standard liquid being then dipped in beaker by probe, during the green light of module to be shown, uses pH meter to correct according to standard liquid; After correction, take out beaker that standard liquid is housed and put into the beaker that sample solution is housed, in the sample solution being then dipped in beaker by probe, during the green light of module to be shown, pH meter can be used to measure sample solution.
These technical schemes, the technical scheme comprising improvement also can combine mutually or combine, thus reaches better technique effect.
By adopting technique scheme, the utility model has following beneficial effect:
The utility model is when carrying out pH value measurement with pH meter to solution, in advance sample solution or standard liquid are maintained identical a certain steady temperature, with pH meter with the use of, eliminate the pH value measure error caused because of temperature because of sample solution and standard liquid to greatest extent, improve pH meter to the certainty of measurement of sample solution.In addition, the utility model is provided with magnetic stirring apparatus on base, automatically can carry out continual stirring to the sample solution in beaker or standard liquid, makes that sample solution and standard liquid mix, homogeneous heating, reduces the measure error of pH value further.
Accompanying drawing explanation
Fig. 1 is system block diagram of the present utility model.
Fig. 2 is overall schematic of the present utility model.
In figure: 1 is probe, and 2 is bases, and 3 is heat-insulation layers, and 4 is central processing units, and 5 is plugs, and 11 is temperature sensors, and 21 is heaters, and 31 is cooling modules, and 41 is display modules.
Detailed description of the invention
Below in conjunction with accompanying drawing, further explanation is explained to this patent.But the protection domain of this patent is not limited to concrete embodiment.
Embodiment 1
As shown in the figure, a kind of thermostat accurately measured for auxiliary pH meter of this patent, comprises probe 1, base 2, heat-insulation layer 3, central processing unit 4 and plug 5.
Described probe 1 comprises temperature sensor 11, is connected with central processing unit 4, for the temperature signal of sample solution or standard liquid is transferred to central processing unit 4.
Described base 2 is boss-shaped structure, for carrying the beaker that sample solution or standard liquid are housed; Base 2 is provided with heater 21 with the contact surface of beaker, and heater 21 contacts with beaker, for heating sample solution in beaker or standard liquid.
Described heat-insulation layer 3 is columnar structured; Heat-insulation layer 3 is arranged on base 2, with base 2 end of for, with base 2 in conjunction with formation accommodating cavity; Described accommodating cavity is for placing the beaker that sample solution or standard liquid are housed, and heat-insulation layer 3 inwall contacts with the wall of cup of the beaker that sample solution or standard liquid are housed; Heat-insulation layer 3 inwall is provided with groove, for placing cooling module 31; Described cooling module 31 contacts with the wall of cup of the beaker that sample solution or standard liquid are housed, for reducing the temperature of the sample solution in beaker or standard liquid.
Described central processing unit 4 comprises microprocessor, control unit and display module 41; After the temperature signal of microprocessor receiving transducer 1, worked by control unit control heater 21 or cooling module 31, the sample solution in beaker or standard liquid are maintained predetermined temperature; Described display module 41 is for showing sample solution in beaker or whether standard liquid reaches steady temperature.
Described plug 5 externally connects power supply, is connected with heater 21 and cooling module 31 by central processing unit 4, powers for giving central processing unit 4, heater 21 and cooling module 31.
Described heater 21 is PTC ceramic heating flake or heating resistance wire; Described cooling module 31 is equipped with the flexible pipe of miniature electromagnetic valve for water inlet, is reduced the temperature of sample solution in beaker or standard liquid by the cold water in flexible pipe; Described central processing unit 4 also comprises temperature setting module, for presetting the steady temperature that will reach; Described central processing unit 4 is arranged in base 2; Described display module 41 is a red light emitting diodes and a green LED, if the temperature of the sample solution in beaker or standard liquid does not reach predetermined temperature, then red light emitting diodes is luminous, if the temperature of the sample solution in beaker or standard liquid maintains predetermined temperature, then green LED is luminous, and described display module 41 also comprises a LED display and buzzer; LED display for showing the real-time temperature of sample solution in cup or standard liquid, the sounding when temperature of the sample solution of buzzer in beaker or standard liquid reaches predetermined temperature; Described base center is provided with magnetic stirring apparatus, automatically can carry out continual stirring to the sample solution in beaker or standard liquid, makes that sample solution and standard liquid mix, homogeneous heating.
During use, plug 5 is connected 220V civil power, by temperature setting module, predetermined temperature is adjusted to 25 DEG C; The beaker that standard liquid is housed is placed in accommodating cavity, then probe 1 is dipped in the standard liquid in beaker, during the green light of module 41 to be shown, use pH meter to correct according to standard liquid; After correction, take out beaker that standard liquid is housed and put into the beaker that sample solution is housed, then probe 1 being dipped in the sample solution in beaker, during the green light of module 41 to be shown, pH meter can being used to measure sample solution.
Claims (9)
1. for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: comprise probe, base, heat-insulation layer, central processing unit and plug;
Described probe comprises temperature sensor, and probe is connected with central processing unit, for the temperature signal of sample solution or standard liquid is transferred to central processing unit;
Described base is boss-shaped structure, for carrying the beaker that sample solution or standard liquid are housed; The contact surface of base and beaker is provided with heater, and heater contacts with beaker, for heating sample solution in beaker or standard liquid;
Described heat-insulation layer is columnar structured; Heat-insulation layer is arranged on base, take base the end of as, with base in conjunction with formation accommodating cavity; Described accommodating cavity is for placing the beaker that sample solution or standard liquid are housed, and heat-insulation layer inwall contacts with the wall of cup of the beaker that sample solution or standard liquid are housed; Heat-insulation layer inwall is provided with groove, for placing cooling module; Described cooling module contacts with the wall of cup of the beaker that sample solution or standard liquid are housed, for reducing the temperature of the sample solution in beaker or standard liquid;
Described central processing unit comprises microprocessor, control unit and display module; After the temperature signal of microprocessor receiving transducer, control heater or cooling module work by control unit, the sample solution in beaker or standard liquid are maintained predetermined temperature; Described display module is for showing sample solution in beaker or whether standard liquid reaches steady temperature;
Described plug externally connects power supply, is connected with heater and cooling module by central processing unit, powers for giving central processing unit, heater and cooling module.
2. according to claim 1 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described heater is PTC ceramic heating flake or heating resistance wire.
3. according to claim 1 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described cooling module is the flexible pipe that water inlet is equipped with miniature electromagnetic valve, reduced the temperature of sample solution in beaker or standard liquid by cold water in flexible pipe.
4. according to claim 3 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: the radian of the interior curvature of described flexible pipe and the outer wall of beaker matches.
5. according to claim 1 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described central processing unit also comprises temperature setting module, for presetting the steady temperature that will reach.
6. according to claim 1 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described central processing unit is arranged in base.
7. according to claim 1 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described display module is a red light emitting diodes and a green LED; If the temperature of the sample solution in beaker or standard liquid does not reach predetermined temperature, then red light emitting diodes is luminous, if the temperature of the sample solution in beaker or standard liquid maintains predetermined temperature, then green LED is luminous.
8. according to claim 7 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described display module also comprises a LED display and buzzer; LED display for showing the real-time temperature of sample solution in beaker or standard liquid, the sounding when temperature of the sample solution of buzzer in beaker or standard liquid reaches predetermined temperature.
9. according to claim 1 for the thermostat that auxiliary pH meter is accurately measured, it is characterized in that: described base center is provided with magnetic stirring apparatus, and heater is arranged around magnetic stirring apparatus on base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577017.9U CN204220165U (en) | 2014-10-08 | 2014-10-08 | A kind of thermostat accurately measured for auxiliary pH meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577017.9U CN204220165U (en) | 2014-10-08 | 2014-10-08 | A kind of thermostat accurately measured for auxiliary pH meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204220165U true CN204220165U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420577017.9U Expired - Fee Related CN204220165U (en) | 2014-10-08 | 2014-10-08 | A kind of thermostat accurately measured for auxiliary pH meter |
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| Country | Link |
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| CN (1) | CN204220165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891426A (en) * | 2016-05-27 | 2016-08-24 | 徐州呼机械制造有限公司 | Industry and environment-protection pH measuring device |
-
2014
- 2014-10-08 CN CN201420577017.9U patent/CN204220165U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891426A (en) * | 2016-05-27 | 2016-08-24 | 徐州呼机械制造有限公司 | Industry and environment-protection pH measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20171008 |