CN101858845A - Direct-reading osmotic pressure tester and osmotic pressure testing method - Google Patents
Direct-reading osmotic pressure tester and osmotic pressure testing method Download PDFInfo
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- CN101858845A CN101858845A CN 201010196884 CN201010196884A CN101858845A CN 101858845 A CN101858845 A CN 101858845A CN 201010196884 CN201010196884 CN 201010196884 CN 201010196884 A CN201010196884 A CN 201010196884A CN 101858845 A CN101858845 A CN 101858845A
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Abstract
The invention discloses a directly-reading osmotic pressure tester, which belongs to a testing instrument. The tester comprises a pure water tank and a closed sample liquid tank, wherein a graduated pipe for indicating water level is arranged on the pure water tank, a water discharge valve is arranged on the lower part of the pure water tank, a sample liquid filling pipe is arranged on the sample liquid tank, a sample liquid discharging valve is arranged on the lower part of the sample liquid tank, and the sample liquid tank is communicated with the pure water tank through a connecting pipe in which an RO membrane is arranged; and a pressure sensor is arranged on the sample liquid tank and is connected with a data acquisition device which is connected with a processor. The testing method is as follows: based on the characteristic that pure water instead of solute molecules can pass through the RO membrane, pure water in the pure water tank passes through the reverse osmosis (RO) membrane to produce a reverse osmosis pressure in the closed sample liquid tank, and the pressure in the closed container is the reverse osmosis pressure of solution. The invention has the advantages of simple instrument structure, simple and convenient test, reliable data, extremely low energy consumption, low fault rate, no noise, low price and wide application in test of reverse osmosis pressures of various kinds of solution.
Description
Technical field
The present invention relates to a kind of detecting instrument, specifically is the assay method of a kind of direct-reading osmotic tester and osmotic pressure.
Background technology
The dipping of traditional food hot pickled mustard tube, yellow fraction melon, sauce Jerusalem artichoke, pickled peppers, candied fruit etc. uses solution such as salt, sugar, its historical being of long duration, food through dipping not only can improve local flavor, and can prolong the shelf-life of food, so formed a big class infusion of food.But the processing of this series products is usually because select for use the concentration of solution to be not suitable for, and causes the local flavor of putrid and deteriorated or product of product not good.If can be to measured in solution osmotic pressure, suitable osmotic pressure numerical value when setting up various products dipping just be easy to control dip process, and it is putrid and deteriorated to prevent that microorganism from causing.The U.S. and Germany produce volumetric molar concentration osmotic tester product, and refrigeration system is housed, and by reducing the sample liquid temp, the freezing point of measuring sample liquid is calculated the osmotic pressure numerical value of solution and price height.Because import penetration presses the analyzer price more expensive, limited the use of this series products in infusion of food processing.The present invention is different with imported product on principle, and about 10,000 yuan of total cost is so should there be good market potential.
Summary of the invention
The invention provides a kind of direct-reading osmotic tester, can produce certain osmometry with respect to solvent by reverse osmosis membrane by solution, it is low to have a cost, and it is convenient to measure, characteristic of accurate.
The present invention realizes with following technical scheme: a kind of direct-reading osmotic tester, comprise pure water case and airtight sample liquid case, the graduated tube that shows water level is arranged on the pure water case, the bottom is equipped with water drain valve, application of sample liquid pipe is arranged on sample liquid case, the bottom of sample liquid case is equipped with setting-out liquid valve, and sample liquid case and pure water case are by connecting pipe UNICOM, and the port that is positioned at the pure water case at connecting pipe is equipped with the RO film; The pressure transducer that is used to gather sample liquid case internal pressure is housed on sample liquid case, and pressure transducer is connected with data collector and converts pressure signal to digital signal, and data collector is connected with processor signal is transferred to processor processing and display result.
A kind of method of utilizing above-mentioned osmotic tester to measure osmotic pressure, utilize pure water can pass through the RO film, the intransitable characteristics of solute molecule, pure water in the pure water case produces reverse osmotic pressure by the reverse osmosis (RO) film in airtight sample liquid case, force value in the closed container is exactly the osmotic pressure numerical value of solution, and concrete steps are:
1) open the sample liquid valve of sample liquid case, close setting-out liquid simultaneously, the sample liquid that needs are measured is added in the sample liquid case by sample liquid valve, wait to fill it up with sample liquid after, close sample liquid valve;
2) close the water drain valve of pure water case, in the pure water case, add the scale mark of pure water to regulation by graduated tube; The scale mark of described regulation is consistent with sample liquid case liquid level;
3) add again behind 1～180min pure water to the consistent scale mark of sample liquid case liquid level;
4) read osmotic pressure numerical value after 1～180min from tensimeter or computer;
5) after mensuration finishes, the water drain valve discharge opeing of opening the setting-out liquid valve and the pure water case of sample liquid case, and clean with pure water rinsing.
The measuring principle of osmotic tester of the present invention: it is airtight then that sample liquid case is filled it up with sample liquid, the pure water case adds fixedly scale of pure water to, allow pure water in sample liquid case, produce reverse osmotic pressure by reverse osmosis membrane, replenish pure water at the pure water case, final graduated tube reading is consistent with initial pure water reading, can produce reverse osmotic pressure at sample liquid case by osmosis, by the pressure that is installed in the determination of pressure sensor solution on the sample liquid case, promptly be the osmotic pressure size of this kind solution.
The invention has the beneficial effects as follows: the present invention detects the methodological science of osmotic pressure, apparatus structure is simple, it is easy to detect, data reliable, power consumption is extremely low, failure rate is low, noiselessness, cost are low, can be widely used in the mensuration of various solution osmotic pressure, particularly in food industry, be used for the detection control of pickled product processing parameters such as hot pickled mustard tube, yellow fraction melon, sauce Jerusalem artichoke, pickled peppers.
Description of drawings
Below in conjunction with drawings and Examples direct-reading osmotic tester of the present invention and assay method are further specified.
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1, pure water case, 2, the pure water case lid, 3, the transparent scale pipe, 4, application of sample liquid valve, 5, tensimeter, 6, pressure transducer, 7, sample liquid case lid, 8, data acquisition system (DAS), 9, computer, 10, sample liquid case, 11, setting-out liquid valve, 12, the reverse osmosis (RO) film, 13 water drain valves.
Embodiment
As shown in drawings, the direct-reading osmotic tester comprises pure water case 1 and airtight sample liquid case 10, and the graduated tube 3 that shows water level is housed on the pure water case lid 2 of pure water case 1, and the bottom is equipped with water drain valve 13, and graduated tube 3 is the transparent scale pipe.Application of sample liquid pipe 4 is arranged on sample liquid case 10, and the bottom of sample liquid case is equipped with setting-out liquid valve 11, and sample liquid case and pure water case are by connecting pipe UNICOM, and the port that is positioned at pure water case 1 at connecting pipe is equipped with reverse osmosis (RO) film 12; On the sample liquid case lid 7 of sample liquid case 10, the pressure transducer 6 that is used to gather sample liquid case internal pressure is housed, pressure transducer 6 is connected with data collector 8 and converts pressure signal to digital signal, and data collector 8 is connected with processor 9 and signal is transferred to processor 9 handles and display result.Be quick direct reading, on sample liquid case 10, tensimeter 5 be housed also.
The concrete steps of utilizing osmotic tester to measure the method for osmotic pressure are:
1) open the sample liquid valve 4 of sample liquid case 10, close setting-out liquid 11 simultaneously, the sample liquid that needs are measured is added in the sample liquid case 10 by sample liquid valve 4, wait to fill it up with sample liquid after, close sample liquid valve 4;
2) close the water drain valve 13 of pure water case 1, in the pure water case, add the scale mark of pure water to regulation by graduated tube 3; The scale mark of described regulation is consistent with sample liquid case liquid level;
3) add again behind 1～180min pure water to the consistent scale mark of sample liquid case liquid level;
4) read osmotic pressure numerical value after 1～180min from tensimeter or computer;
5) after mensuration finishes, open water drain valve 13 discharge opeings of setting-out liquid valve 11 with the pure water case 1 of sample liquid case 10, and clean with pure water rinsing.
Embodiment 1
Test March 1 2010 date
Experiment condition and method are opened sample liquid valve 4, close setting-out liquid 11, are concentration that 1% salt solution is added in the sample liquid case 10 by sample liquid valve 4, fill it up with sample liquid case after, close sample liquid valve 4; Close water drain valve 13, add pure water to scale mark in the pure water case by the transparent scale pipe, scale mark is consistent with sample liquid case liquid level, adds pure water behind the 30min again to scale mark, reads osmotic pressure numerical value after 30min from tensimeter or computer.Same method of operating can be measured 5%, 10% salt solution osmotic pressure numerical value.Each measure numerical value after, open setting-out liquid valve 11 and water drain valve 13 discharge opeings, and clean with pure water rinsing, be beneficial to the mensuration of next sample.
The osmotic pressure numerical value of 1%, 5%, the 10% salt solution correspondence that experimental result is measured is respectively: 0.08MPa, 3.86MPa, 7.52Mpa.
Test March 2 2010 date
Experiment condition and method are opened sample liquid valve 4, close setting-out liquid valve 11, are concentration that 1% sucrose solution is added in the sample liquid case 10 by sample liquid valve 4, fill it up with sample liquid case after, close sample liquid valve 4; Close water drain valve 13, add pure water to scale mark in the pure water case by transparent scale pipe 3, scale mark is consistent with sample liquid case liquid level, adds pure water behind the 35min again to scale mark, reads osmotic pressure numerical value after 35min from tensimeter or computer.Same method of operating can be measured 20%, 40% sucrose solution osmotic pressure numerical value.Each measure numerical value after, open setting-out liquid valve 11 and water drain valve 13 discharge opeings, and clean with pure water rinsing, be beneficial to the mensuration of next sample.
Experimental result is 1%, 20%, 40% sucrose solution to concentration, and the corresponding osmotic pressure numerical value of mensuration is respectively: 0.08MPa, 1.52MPa, 3.35MPa.
Test March 3 2010 date
Experiment condition and method are opened sample liquid valve 4, close setting-out liquid 11, are concentration that 1% glucose solution is added in the sample liquid case 10 by sample liquid valve 4, fill it up with sample liquid case after, close sample liquid valve 4; Close water drain valve 13, add pure water to scale mark in the pure water case by the transparent scale pipe, scale mark is consistent with sample liquid case liquid level, adds pure water behind the 32min again to scale mark, reads osmotic pressure numerical value after 32min from tensimeter or computer.Same method of operating can be measured 20%, 40% glucose solution osmotic pressure numerical value.Each measure numerical value after, open setting-out liquid valve 11 and water drain valve 13 discharge opeings, and clean with pure water rinsing, be beneficial to the mensuration of next sample.
Experimental result is to 1%, 10%, 20% glucose solution, and the corresponding osmotic pressure numerical value of mensuration is respectively: 0.13MPa, 1.38MPa, 2.99MPa.
Claims (4)
1. direct-reading osmotic tester, it is characterized in that: comprise pure water case (1) and airtight sample liquid case (10), the graduated tube (3) that shows water level is arranged on pure water case (1), the bottom is equipped with water drain valve (13), application of sample liquid pipe (4) is arranged on sample liquid case, the bottom of sample liquid case is equipped with setting-out liquid valve (11), and sample liquid case and pure water case are by connecting pipe UNICOM, and the port that is positioned at pure water case (1) at connecting pipe is equipped with RO film (12);
The pressure transducer (6) that is used to gather sample liquid case internal pressure is housed on sample liquid case (10), pressure transducer (6) is connected with data collector (8) and converts pressure signal to digital signal, and data collector (8) is connected with computing machine (9) and signal is transferred to computing machine (9) handles and display result.
2. direct-reading osmotic tester according to claim 1 is characterized in that: tensimeter (5) also is housed on sample liquid case (10).
3. direct-reading osmotic tester according to claim 1 is characterized in that: graduated tube (3) is the transparent scale pipe.
4. method of utilizing the described osmotic tester of claim 1 to measure osmotic pressure, it is characterized in that: utilize the pure water in the pure water case in airtight sample liquid case, to produce osmotic pressure by the reverse osmosis (RO) film, force value in the closed container is exactly the osmotic pressure numerical value of solution, and concrete steps are:
1) open the sample liquid valve (4) of sample liquid case (10), close setting-out liquid valve (11) simultaneously, the sample liquid that needs are measured is added in the sample liquid case (10) by sample liquid valve (4), wait to fill it up with sample liquid after, close sample liquid valve (4);
2) close the water drain valve (13) of pure water case (1), in the pure water case, add the scale mark of pure water to regulation by graduated tube (3); The scale mark of described regulation is consistent with sample liquid case liquid level;
3) treat to add again behind 1～180min pure water to the consistent scale mark of sample liquid case liquid level;
4) read osmotic pressure numerical value after 1～180min from tensimeter or computer;
5) after mensuration finishes, water drain valve (13) discharge opeing of opening setting-out liquid valve (11) Yu the pure water case (1) of sample liquid case (10), and clean with pure water rinsing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196884 CN101858845B (en) | 2010-06-04 | 2010-06-04 | Direct-reading osmotic pressure tester and osmotic pressure testing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010196884 CN101858845B (en) | 2010-06-04 | 2010-06-04 | Direct-reading osmotic pressure tester and osmotic pressure testing method |
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| Publication Number | Publication Date |
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| CN101858845A true CN101858845A (en) | 2010-10-13 |
| CN101858845B CN101858845B (en) | 2013-04-10 |
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| CN 201010196884 Expired - Fee Related CN101858845B (en) | 2010-06-04 | 2010-06-04 | Direct-reading osmotic pressure tester and osmotic pressure testing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884629A (en) * | 2013-01-30 | 2014-06-25 | 中国科学院宁波材料技术与工程研究所 | Device and method for testing liquid osmotic pressure |
| CN104819798A (en) * | 2015-05-08 | 2015-08-05 | 西南科技大学 | Sensor for monitoring water pressure change in tailings leaching experiment online |
| CN110618062A (en) * | 2019-08-28 | 2019-12-27 | 四川大学华西医院 | Device and method for testing osmotic pressure of blood or urine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2640378A1 (en) * | 1988-12-08 | 1990-06-15 | Jeulin | Static osmometer |
| JP2000162111A (en) * | 1998-11-27 | 2000-06-16 | Mitsuhiro Kitamura | Osmotic pressure experimental device |
| US6397666B1 (en) * | 1999-12-28 | 2002-06-04 | Eastman Kodak Company | Method for generating a solution with a predetermined osmotic pressure |
| JP2004170381A (en) * | 2002-11-20 | 2004-06-17 | Shinko Kogyo Kk | Method and device of measuring osmotic pressure of active water |
| CN2927035Y (en) * | 2006-06-21 | 2007-07-25 | 西南石油大学 | Drilling-liquid semi-transparent film determiner |
| WO2008010164A2 (en) * | 2006-07-13 | 2008-01-24 | Politecnico Di Torino | Device for osmotic pressure measurement and measurement method using it |
-
2010
- 2010-06-04 CN CN 201010196884 patent/CN101858845B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2640378A1 (en) * | 1988-12-08 | 1990-06-15 | Jeulin | Static osmometer |
| JP2000162111A (en) * | 1998-11-27 | 2000-06-16 | Mitsuhiro Kitamura | Osmotic pressure experimental device |
| US6397666B1 (en) * | 1999-12-28 | 2002-06-04 | Eastman Kodak Company | Method for generating a solution with a predetermined osmotic pressure |
| JP2004170381A (en) * | 2002-11-20 | 2004-06-17 | Shinko Kogyo Kk | Method and device of measuring osmotic pressure of active water |
| CN2927035Y (en) * | 2006-06-21 | 2007-07-25 | 西南石油大学 | Drilling-liquid semi-transparent film determiner |
| WO2008010164A2 (en) * | 2006-07-13 | 2008-01-24 | Politecnico Di Torino | Device for osmotic pressure measurement and measurement method using it |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884629A (en) * | 2013-01-30 | 2014-06-25 | 中国科学院宁波材料技术与工程研究所 | Device and method for testing liquid osmotic pressure |
| CN103884629B (en) * | 2013-01-30 | 2016-08-03 | 中国科学院宁波材料技术与工程研究所 | A kind of test apparatus and method for liquid infiltration pressure |
| CN104819798A (en) * | 2015-05-08 | 2015-08-05 | 西南科技大学 | Sensor for monitoring water pressure change in tailings leaching experiment online |
| CN104819798B (en) * | 2015-05-08 | 2017-05-10 | 西南科技大学 | Sensor for monitoring water pressure change in tailings leaching experiment online |
| CN110618062A (en) * | 2019-08-28 | 2019-12-27 | 四川大学华西医院 | Device and method for testing osmotic pressure of blood or urine |
| CN110618062B (en) * | 2019-08-28 | 2022-02-11 | 四川大学华西医院 | Device and method for testing osmotic pressure of blood or urine |
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| CN101858845B (en) | 2013-04-10 |
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