CN202939149U - Multichannel pH testing device - Google Patents
Multichannel pH testing device Download PDFInfo
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- CN202939149U CN202939149U CN 201220633729 CN201220633729U CN202939149U CN 202939149 U CN202939149 U CN 202939149U CN 201220633729 CN201220633729 CN 201220633729 CN 201220633729 U CN201220633729 U CN 201220633729U CN 202939149 U CN202939149 U CN 202939149U
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Abstract
The utility model discloses a multichannel pH testing device. The multichannel pH testing device comprises at least five pH electrodes, an analog-to-digital conversion chip, a single chip, a liquid crystal display and a key input device, wherein all the pH electrodes are connected with an input end of the analog-to-digital conversion chip; an output end of the analog-to-digital conversion chip, the key input device and a system power supply are connected with the input end of the single chip; and the output end of the single chip is connected with the liquid crystal display. The multichannel pH testing device has the characteristics that the structure is simple, the use is convenient, the working efficiency of testing pH of textiles can be effectively increased, and the multichannel pH testing device is convenient, fast, precise, safe and reliable. The multichannel pH testing device also has the characteristics that one pH meter is provided with five or more pH electrodes, so five or more sample solutions can be tested simultaneously, the time of waiting for the indication value of the pH meter to be stable is almost absent, and the efficiency of testing the pH of the textiles is directly increased by 5 or more times correspondingly.
Description
Technical field
The utility model relates to a kind of proving installation, relates in particular to a kind of water extraction solution pH value multichannel test device.
Background technology
With other countries are the same in the world, GB 18401-2010 " technical requirement of national textile product basic security " has made the Limited Doses Compulsory Feature to pH value of fabrics, and the pH value of every its extraction solution of textile that enters China and sell on China market must meet the requirement of GB 18401-2010.The method of measuring at present pH value of fabrics adopts GB/T 7573-2009 " pH value of textile aqueous extract liquor assay method ", and according to 7. 2 sections of GB/T 7573-2009 standards and 8.2 regulations, each specimen is prepared 3 Duplicate Samples; During test, first electrode be placed in first part of extract and stir, until pH indicating value stable (this measured value does not record); Then measure second part of water extract, electrode is rested in water extract until the pH indicating value is stable and record; Measure equally again the 3rd part of water extract, get second part with the mean value of the 3rd part of measured value end value as this test.
China is textile production and big export country, and the textile inspection task is very heavy, and port for export and the distribution centre important at textile are all the more so.Because textile samples is quite a lot of, each sample needs again to test three duplicate samples, add that pH meter test electrode stable reading in every part of textile aqueous extract liquor needs the regular hour, therefore under the prerequisite that guarantees quality inspection, improve the check speed of pH value of fabrics, reduce the stand-by period, quite important.PH value of textile aqueous extract liquor is measured and is used the single channel pH meter at present, a pH meter (claiming again acidometer) is only joined a pH electrode, can only test a sample solution at every turn, speed is slow, efficiency is low, and tens, a hundreds of sample test only is used in and waits for half time of a sample test process that almost will account for pH meter stable time of indicating value.
The utility model content
The purpose of this utility model be to provide a kind of simple in structure, easy to use, can effectively improve the work efficiency that pH value of fabrics is measured, easily and fast, accurate, safe and reliable hyperchannel pH value proving installation.
To achieve these goals, the technical solution of the utility model is: a kind of hyperchannel pH value proving installation is provided, wherein, comprise at least five pH electrodes, modulus conversion chip, single-chip microcomputer, liquid crystal display and key-press input device, every described pH electrode all is connected with the input end of analog-to-digital conversion chip, the output terminal of modulus conversion chip, key-press input device, system power supply all are connected with the input end of single-chip microcomputer, and the output terminal of single-chip microcomputer is connected with liquid crystal display.
Described pH number of electrodes is five or eight or ten.
Described liquid crystal display all shows five road pH indicating values and five road solution temperature values.
Described liquid crystal display all shows eight road pH indicating values and eight road solution temperature values.
Described liquid crystal display all shows ten road pH indicating values and ten road solution temperature values.
The utility model is simple in structure, easy to use, can effectively improve the work efficiency of textile pH pH-value determination pH, easily and fast, accurately, safe and reliable.This hyperchannel pH pH-value determination pH device, a pH meter configuration five or more pH electrodes, can measure five or more sample solution simultaneously, exist and wait for the pH meter stable time of indicating value hardly, the efficiency of directly pH value of fabrics being measured improves corresponding five times or more times.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model hyperchannel pH value proving installation;
Embodiment
For the technology contents that describes the utility model hyperchannel pH value proving installation in detail, structural attitude, below in conjunction with embodiment and coordinate accompanying drawing to be described further.
As shown in Figure 1, the utility model hyperchannel pH value proving installation, a pH meter configuration five or more pH electrodes, the pH temperature measuring circuit of pH electrode all is connected with the circuit input end of modulus conversion chip, the button inputting circuits of the output terminal of modulus conversion chip circuit, key-press input device, system power supply all are connected with the input end of single-chip microcomputer, and the output terminal of single-chip microcomputer is connected with liquid crystal display.Described liquid crystal display all shows five road pH indicating values or eight road pH indicating values or ten road pH indicating values and five road solution temperature Zhi Huo eight road solution temperature Zhi Huo ten road solution temperature values.
1, the pH meter course of work:
The pH electrode is immersed in aqueous solution, and the electric signal of electrode becomes simulating signal into digital signal by the AD modulus conversion chip, after single-chip microcomputer is processed, is presented on liquid crystal display.
Four, the operating process of pH value:
1, accurately take three parts, (2 ± 0.05) g sample, put into respectively three 250mL Erlenmeyer flasks, add tri-grades of water of 100mL or deionized water, shaking flasks makes sample wetting, and 2h then vibrates on oscillator;
2, with standard buffer solution standard pH electrode;
3, use the pH value through the pH meter determination test water of calibration, its pH value should be in 5～6.5 scopes;
4, wash electrode to the pH value stabilization with three grades of water or deionized water;
5, first part of extract poured in the 50mL beaker, measured the pH value of water extract with pH meter, after stablizing, read pH value (this result does not record);
6, second part of extract poured in the 50mL beaker, cleaning electrode not, directly by the electrode immersed in liquid level down to 1cm, standing, until the pH value reaches stationary value, then record the pH value;
7, repeat the pH value that aforesaid operations is measured the 3rd part of extract;
8, using the mean value of pH value of second part and the 3rd part water extract recording as net result, retain a decimal.
The utility model can be measured five or more sample solution simultaneously, exists and waits for the pH meter stable time of indicating value hardly, and the efficiency of directly pH value of fabrics being measured improves corresponding five times or more times.
Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belong to the scope that the utility model is contained.
Claims (5)
1. a hyperchannel pH value proving installation, it is characterized in that: comprise at least five pH electrodes, modulus conversion chip, single-chip microcomputer, liquid crystal display and key-press input device, every described pH electrode all is connected with the input end of analog-to-digital conversion chip, the output terminal of modulus conversion chip, key-press input device, system power supply all are connected with the input end of single-chip microcomputer, and the output terminal of single-chip microcomputer is connected with liquid crystal display.
2. hyperchannel pH value proving installation as claimed in claim 1, it is characterized in that: described pH number of electrodes is five or eight or ten.
3. hyperchannel pH value proving installation as claimed in claim 1, it is characterized in that: described liquid crystal display all shows five road pH indicating values and five road solution temperature values.
4. hyperchannel pH value proving installation as claimed in claim 1, it is characterized in that: described liquid crystal display all shows eight road pH indicating values and eight road solution temperature values.
5. hyperchannel pH value proving installation as claimed in claim 1, it is characterized in that: described liquid crystal display all shows ten road pH indicating values and ten road solution temperature values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633729 CN202939149U (en) | 2012-11-27 | 2012-11-27 | Multichannel pH testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633729 CN202939149U (en) | 2012-11-27 | 2012-11-27 | Multichannel pH testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939149U true CN202939149U (en) | 2013-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220633729 Expired - Fee Related CN202939149U (en) | 2012-11-27 | 2012-11-27 | Multichannel pH testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939149U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153847A (en) * | 2016-08-19 | 2016-11-23 | 深圳大学 | A kind of water quality testing meter |
| CN107576711A (en) * | 2017-08-30 | 2018-01-12 | 成都安普利菲能源技术有限公司 | High-flux electric chemical detection system and high-flux electric chemical detection method |
| CN108254583A (en) * | 2018-02-01 | 2018-07-06 | 中纺协（北京）检验技术服务有限公司 | A kind of pH value of fabrics automatic test equipment |
-
2012
- 2012-11-27 CN CN 201220633729 patent/CN202939149U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153847A (en) * | 2016-08-19 | 2016-11-23 | 深圳大学 | A kind of water quality testing meter |
| CN106153847B (en) * | 2016-08-19 | 2018-07-03 | 深圳大学 | A kind of water quality testing meter |
| CN107576711A (en) * | 2017-08-30 | 2018-01-12 | 成都安普利菲能源技术有限公司 | High-flux electric chemical detection system and high-flux electric chemical detection method |
| CN107576711B (en) * | 2017-08-30 | 2021-02-19 | 成都安普利菲能源技术有限公司 | High-throughput electrochemical detection system and high-throughput electrochemical detection method |
| CN108254583A (en) * | 2018-02-01 | 2018-07-06 | 中纺协（北京）检验技术服务有限公司 | A kind of pH value of fabrics automatic test equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20131127 |