CN105289313A - Reverse osmosis RO membrane detection method and device, and water purification machine - Google Patents
Reverse osmosis RO membrane detection method and device, and water purification machine Download PDFInfo
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- CN105289313A CN105289313A CN201410281416.5A CN201410281416A CN105289313A CN 105289313 A CN105289313 A CN 105289313A CN 201410281416 A CN201410281416 A CN 201410281416A CN 105289313 A CN105289313 A CN 105289313A
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- reverse osmosis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The invention discloses a reverse osmosis RO membrane detection method and device, and a water purification machine. The method comprises the steps of: acquiring a first conductivity at a reverse osmosis RO membrane water inlet end and a second conductivity at a reverse osmosis RO membrane water outlet end; acquiring a desalination rate is according to the first conductivity and the second conductivity; determining whether the desalination rate is lower than a preset desalination rate threshold; when the desalination rate is lower than the preset desalination rate threshold, determining that the reverse osmosis RO membrane fails, and prompting a user to replace the reverse osmosis RO membrane. With the method provided by the embodiment of the method, whether the reverse osmosis RO membrane is failed can be detected; and with the prompt, the user can replace the membrane when the membrane fails. Therefore, resources are saved, user application cost is reduced, and user experience is greatly improved.
Description
Technical field
The present invention relates to technical field of electric appliances, particularly a kind of detection method of reverse osmosis (RO) film, device and water purifier.
Background technology
Reverse osmosis (RO) film in water purifier is the filter core of an important filtering heavy metal ion, is also the most expensive one of price in all functions filter core.Reverse osmosis (RO) film, can because the blocking of trapped substance and the procreation etc. of microorganism cause filter core to lose efficacy by after Long-Time Service, and namely the life-span of reverse osmosis (RO) film expires.At present, in the related, can only judge whether the life-span of reverse osmosis (RO) film expires according to the working time of reverse osmosis (RO) film, water flow etc., judged result is not accurate enough.In addition, because the water quality difference of different regions is different with user's water consumption, for ensureing the safe drinking water of people, time or the flow set of changing each filter core are relatively conservative, user can change before reverse osmosis (RO) film really loses efficacy, thus add the use cost of user, cause the waste of resource.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, first object of the present invention is the detection method proposing a kind of reverse osmosis (RO) film.Whether the method can detect reverse osmosis (RO) film and lose efficacy, and when losing efficacy, prompting user changed, and had saved resource, had reduced the use cost of user, greatly improve Consumer's Experience.
Second object of the present invention is the checkout gear proposing a kind of reverse osmosis (RO) film.
3rd object of the present invention is to propose a kind of water purifier.
To achieve these goals, the detection method of the reverse osmosis (RO) film of first aspect present invention embodiment, comprises the following steps: S1, first electrical conductivity of water inlet end of acquisition reverse osmosis (RO) film and the second electrical conductivity of the water side of described reverse osmosis (RO) film; S2, according to described first electrical conductivity and described second electrical conductivity obtain salt rejection rate; S3, judge whether described salt rejection rate is less than default salt rejection rate threshold value; And S4, when described salt rejection rate is less than described default salt rejection rate threshold value, judge that described reverse osmosis (RO) film lost efficacy and pointed out user to change described reverse osmosis (RO) film.
According to the detection method of the reverse osmosis (RO) film of the embodiment of the present invention, by first electrical conductivity of water inlet end of acquisition reverse osmosis (RO) film and the second electrical conductivity of the water side of reverse osmosis (RO) film, salt rejection rate is obtained according to the first electrical conductivity and the second electrical conductivity, when salt rejection rate is less than default salt rejection rate threshold value, judge that reverse osmosis (RO) film lost efficacy and pointed out user to change reverse osmosis (RO) film, the method is simple, reliable, accuracy rate is high, point out user to change when reverse osmosis (RO) film really lost efficacy, save resource, reduce the use cost of user, greatly improve Consumer's Experience.
In one embodiment of the invention, described S1 specifically comprises: the first magnitude of voltage being detected described water inlet end by the first conductivity sensor of described water inlet end, and the second magnitude of voltage being detected described water side by the second conductivity sensor of described water side; Obtain described first electrical conductivity according to described first magnitude of voltage, and obtain described second electrical conductivity according to described second magnitude of voltage.
In one embodiment of the invention, described first electrical conductivity and described second electrical conductivity is obtained according to following formula (1) and (2):
C1=(U1 ÷ A) × B, (1) wherein, C1 is described first electrical conductivity, and U1 is described first magnitude of voltage, and A is full range voltage, and B is the full scale of testing conductivity sensor setting;
C2=(U2 ÷ A) × B, (2) wherein, C2 is described second electrical conductivity, and U2 is described second magnitude of voltage, and A is described full range voltage, and B is the full scale of described testing conductivity sensor setting.
In one embodiment of the invention, described salt rejection rate is obtained according to following formula (3):
D=(C1-C2) ÷ C1 × 100%, (3) wherein, D is described salt rejection rate, and C1 is described first electrical conductivity, and C2 is described second electrical conductivity.
To achieve these goals, the checkout gear of the reverse osmosis (RO) film of second aspect present invention embodiment, comprise: the first conductivity sensor, described first conductivity sensor is arranged on the water inlet end of reverse osmosis (RO) film, for detecting the first magnitude of voltage of described water inlet end; Second conductivity sensor, described second conductivity sensor is arranged on the water side of described reverse osmosis (RO) film, for detecting the second magnitude of voltage of described water side; Circuit module, described circuit module is connected with described second conductivity sensor with described first conductivity sensor respectively, described circuit module is used for obtaining the first electrical conductivity according to described first magnitude of voltage, and obtain the second electrical conductivity according to described second magnitude of voltage, and obtain salt rejection rate according to described first electrical conductivity and described second electrical conductivity, described circuit module judges whether described salt rejection rate is less than default salt rejection rate threshold value, when described salt rejection rate is less than default salt rejection rate threshold value, described circuit module prompting user changes described reverse osmosis (RO) film.
According to the checkout gear of the reverse osmosis (RO) film of the embodiment of the present invention, the first magnitude of voltage of the water inlet end of reverse osmosis (RO) film is detected by the first conductivity sensor, the second magnitude of voltage of the water side of reverse osmosis (RO) film is detected by the second conductivity sensor, circuit module calculates the salt rejection rate of reverse osmosis (RO) film according to the first magnitude of voltage and the second magnitude of voltage, and when salt rejection rate is less than default salt rejection rate threshold value, prompting user changes reverse osmosis (RO) film, this apparatus structure is simple, result of calculation accuracy rate is high, point out user to change when reverse osmosis (RO) film really lost efficacy, save resource, reduce the use cost of user, greatly improve Consumer's Experience.
In one embodiment of the invention, described circuit module, also for powering for described first conductivity sensor and described second conductivity sensor.
In one embodiment of the invention, described circuit module obtains described first electrical conductivity and described second electrical conductivity according to following formula (1) and (2):
C1=(U1 ÷ A) × B, (1) wherein, C1 is described first electrical conductivity, and U1 is described first magnitude of voltage, and A is full range voltage, and B is the full scale of testing conductivity sensor setting;
C2=(U2 ÷ A) × B, (2) wherein, C2 is described second electrical conductivity, and U2 is described second magnitude of voltage, and A is described full range voltage, and B is the full scale of described testing conductivity sensor setting.
In one embodiment of the invention, described circuit module obtains described salt rejection rate according to following formula (3):
D=(C1-C2) ÷ C1 × 100%, (3) wherein, D is described salt rejection rate, and C1 is described first electrical conductivity, and C2 is described second electrical conductivity.
To achieve these goals, the water purifier of third aspect present invention embodiment, comprises the checkout gear of the reverse osmosis (RO) film of second aspect present invention embodiment.
According to the water purifier of the embodiment of the present invention, owing to being provided with the checkout gear of reverse osmosis (RO) film, can judge whether reverse osmosis (RO) film lost efficacy by salt rejection rate, and point out user to change when reverse osmosis (RO) film lost efficacy, save resource, reduce the use cost of user, greatly improve Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the flow chart of the detection method of reverse osmosis (RO) film according to an embodiment of the invention;
Fig. 2 is the flow chart of the second electrical conductivity of the first electrical conductivity of the water inlet end obtaining reverse osmosis (RO) film according to an embodiment of the invention and the water side of reverse osmosis (RO) film;
Fig. 3 is the setting position schematic diagram of the first conductivity sensor and the second conductivity sensor according to an embodiment of the invention;
Fig. 4 is the structural representation of the checkout gear of reverse osmosis (RO) film according to an embodiment of the invention.
Reference numeral:
First conductivity sensor 10, second conductivity sensor 20 and circuit module 30.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Fig. 1 is the flow chart of the detection method of reverse osmosis (RO) film according to an embodiment of the invention.As shown in Figure 1, the detection method of the reverse osmosis (RO) film of the embodiment of the present invention comprises the steps.
S101, obtains first electrical conductivity of water inlet end of reverse osmosis (RO) film and the second electrical conductivity of the water side of reverse osmosis (RO) film.
In one embodiment of the invention, as shown in Figure 2, S101 specifically comprises the following steps:
S1011, is detected the first magnitude of voltage of water inlet end, and is detected the second magnitude of voltage of water end (W.E.) by the second conductivity sensor of water side by the first conductivity sensor of water inlet end.
Particularly, as shown in Figure 3,1 is the ventilating water pipe in water purifier, 2 is the first conductivity sensor, 3 for reverse osmosis (RO) film, 4 be the second conductivity sensor, 5 is electrical signal lead, and 6 is sensor power and data analysis circuit module (hereinafter referred to as circuit module).Wherein, the first conductivity sensor is arranged on the water inlet end of reverse osmosis (RO) film, and the second conductivity sensor is arranged on the water side of reverse osmosis (RO) film.Circuit module is that the first conductivity sensor and the second conductivity sensor are powered, and the second magnitude of voltage that the first magnitude of voltage detected the first conductivity sensor and the second conductivity sensor detect carries out analyzing and processing.When circuit module is the first conductivity sensor and the second conductivity sensor is powered, the first conductivity sensor and the second conductivity sensor get final product work.
S1012, obtains the first electrical conductivity according to the first magnitude of voltage, and obtains the second electrical conductivity according to the second magnitude of voltage.
Particularly, when the water route water flowing of water purifier, circuit module can obtain the first electrical conductivity according to the first magnitude of voltage, and obtains the second electrical conductivity according to the second magnitude of voltage.
In one embodiment of the invention, the first electrical conductivity and the second electrical conductivity is obtained according to following formula (1) and (2):
C1=(U1 ÷ A) × B, (1) wherein, C1 is the first electrical conductivity, U1 is the first magnitude of voltage (i.e. the magnitude of voltage of the first conductivity sensor output), A is full range voltage (i.e. the most high-amplitude magnitude of voltage of sampling of circuit module), and B is the full scale (i.e. the first conductivity sensor can the peak of test specification) of testing conductivity sensor setting;
C2=(U2 ÷ A) × B, (2) wherein, C2 is the second electrical conductivity, U2 is the second magnitude of voltage (i.e. the magnitude of voltage of the second conductivity sensor output), A is full range voltage (i.e. the most high-amplitude magnitude of voltage of sampling of circuit module), and B is the full scale (i.e. the second conductivity sensor can the peak of test specification) of testing conductivity sensor setting.
S102, obtains salt rejection rate according to the first electrical conductivity and the second electrical conductivity.
In one embodiment of the invention, salt rejection rate is obtained according to following formula (3):
D=(C1-C2) ÷ C1 × 100%, (3) wherein, D is salt rejection rate, and C1 is the first electrical conductivity, and C2 is the second electrical conductivity.
S103, judges whether salt rejection rate is less than default salt rejection rate threshold value.
S104, when salt rejection rate is less than default salt rejection rate threshold value, judges that reverse osmosis (RO) film lost efficacy and pointed out user to change reverse osmosis (RO) film.
Particularly, water purifier is in routine use process, and the salt rejection rate of its reverse osmosis (RO) film can reduce gradually, when salt rejection rate drop to be less than default salt rejection rate threshold value time, reverse osmosis (RO) film lost efficacy.So, when salt rejection rate is less than default salt rejection rate threshold value, judge that reverse osmosis (RO) film lost efficacy and pointed out user to change reverse osmosis (RO) film.
More specifically, circuit module points out user to change reverse osmosis (RO) film by the mode of flashing indicator light and unlatching buzzer.
The detection method of the reverse osmosis (RO) film of the embodiment of the present invention, by first electrical conductivity of water inlet end of acquisition reverse osmosis (RO) film and the second electrical conductivity of the water side of reverse osmosis (RO) film, salt rejection rate is obtained according to the first electrical conductivity and the second electrical conductivity, when salt rejection rate is less than default salt rejection rate threshold value, judge that reverse osmosis (RO) film lost efficacy and pointed out user to change reverse osmosis (RO) film, the method is simple, reliable, accuracy rate is high, point out user to change when reverse osmosis (RO) film really lost efficacy, save resource, reduce the use cost of user, greatly improve Consumer's Experience.
In order to realize above-described embodiment, the present invention also proposes a kind of checkout gear of reverse osmosis (RO) film.
Fig. 4 is the structural representation of the checkout gear of reverse osmosis (RO) film according to an embodiment of the invention.As shown in Figure 3, the checkout gear of the reverse osmosis (RO) film of the embodiment of the present invention, comprising: the first conductivity sensor 10, second conductivity sensor 20 and circuit module 30.
Wherein, the first conductivity sensor 10 is arranged on the water inlet end of reverse osmosis (RO) film, for detecting the first magnitude of voltage of water inlet end; Second conductivity sensor 20 is arranged on the water side of reverse osmosis (RO) film, for detecting the second magnitude of voltage of water end (W.E.); Circuit module 30 is connected with the second conductivity sensor 20 with the first conductivity sensor 10 respectively, circuit module 30 is for obtaining the first electrical conductivity according to the first magnitude of voltage, and obtain the second electrical conductivity according to the second magnitude of voltage, and obtain salt rejection rate according to the first electrical conductivity and the second electrical conductivity, circuit module 30 judges whether salt rejection rate is less than default salt rejection rate threshold value, when salt rejection rate is less than default salt rejection rate threshold value, circuit module 30 points out user to change reverse osmosis (RO) film.
Particularly, as shown in Figure 3,1 is the ventilating water pipe in water purifier, and 2 be the first conductivity sensor 10,3 is electrical signal lead for reverse osmosis (RO) film, 4 is the second conductivity sensor 20,5, and 6 is circuit module 30.Wherein, the first conductivity sensor 10 is arranged on the water inlet end of reverse osmosis (RO) film, and the second conductivity sensor 20 is arranged on the water side of reverse osmosis (RO) film.
In one embodiment of the invention, circuit module 30 is also for powering for the first conductivity sensor 10 and the second conductivity sensor 20.Particularly, when circuit module 30 is the first conductivity sensor 10 and the second conductivity sensor 20 is powered, the first conductivity sensor 10 and the second conductivity sensor 20 get final product work.
Particularly, when the water route water flowing of water purifier, circuit module 30 can obtain the first electrical conductivity according to the first magnitude of voltage, and obtains the second electrical conductivity according to the second magnitude of voltage.
In one embodiment of the invention, circuit module 30 obtains the first electrical conductivity and the second electrical conductivity according to following formula (1) and (2):
C1=(U1 ÷ A) × B, (1) wherein, C1 is the first electrical conductivity, U1 is the first magnitude of voltage (i.e. the magnitude of voltage of the first conductivity sensor 10 output), A is full range voltage (i.e. the most high-amplitude magnitude of voltage of sampling of circuit module 30), and B is the full scale (i.e. the first conductivity sensor can the peak of test specification) of testing conductivity sensor setting;
C2=(U2 ÷ A) × B, (2) wherein, C2 is the second electrical conductivity, U2 is the second magnitude of voltage (i.e. the magnitude of voltage of the second conductivity sensor 20 output), A is full range voltage (i.e. the most high-amplitude magnitude of voltage of sampling of circuit module 30), and B is the full scale (i.e. the second conductivity sensor can the peak of test specification) of testing conductivity sensor setting.
In one embodiment of the invention, circuit module 30 obtains salt rejection rate according to following formula (3):
D=(C1-C2) ÷ C1 × 100%, (3) wherein, D is salt rejection rate, and C1 is the first electrical conductivity, and C2 is the second electrical conductivity.
More specifically, water purifier is in routine use process, and the salt rejection rate of its reverse osmosis (RO) film can reduce gradually, when salt rejection rate drop to be less than default salt rejection rate threshold value time, reverse osmosis (RO) film lost efficacy.So when salt rejection rate is less than default salt rejection rate threshold value, circuit module 30 judges that reverse osmosis (RO) film lost efficacy and pointed out user to change reverse osmosis (RO) film.Wherein, circuit module 30 points out user to change reverse osmosis (RO) film by the mode of flashing indicator light and unlatching buzzer.
The checkout gear of the reverse osmosis (RO) film of the embodiment of the present invention, the first magnitude of voltage of the water inlet end of reverse osmosis (RO) film is detected by the first conductivity sensor, the second magnitude of voltage of the water side of reverse osmosis (RO) film is detected by the second conductivity sensor, circuit module calculates the salt rejection rate of reverse osmosis (RO) film according to the first magnitude of voltage and the second magnitude of voltage, and when salt rejection rate is less than default salt rejection rate threshold value, prompting user changes reverse osmosis (RO) film, this apparatus structure is simple, result of calculation accuracy rate is high, point out user to change when reverse osmosis (RO) film really lost efficacy, save resource, reduce the use cost of user, greatly improve Consumer's Experience.
In order to realize above-described embodiment, the present invention also proposes a kind of water purifier.This water purifier comprises the checkout gear of the reverse osmosis (RO) film of the embodiment of the present invention.
By salt rejection rate, the water purifier of the embodiment of the present invention, owing to being provided with the checkout gear of reverse osmosis (RO) film, can judge whether reverse osmosis (RO) film lost efficacy, and point out user to change when reverse osmosis (RO) film lost efficacy, save resource, reduced the use cost of user, greatly improve Consumer's Experience.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. a detection method for reverse osmosis (RO) film, is characterized in that, comprises the following steps:
S1, first electrical conductivity of water inlet end of acquisition reverse osmosis (RO) film and the second electrical conductivity of the water side of described reverse osmosis (RO) film;
S2, according to described first electrical conductivity and described second electrical conductivity obtain salt rejection rate;
S3, judge whether described salt rejection rate is less than default salt rejection rate threshold value; And
S4, when described salt rejection rate is less than described default salt rejection rate threshold value, judge that described reverse osmosis (RO) film lost efficacy and pointed out user to change described reverse osmosis (RO) film.
2. the detection method of reverse osmosis (RO) film as claimed in claim 1, it is characterized in that, described S1 specifically comprises:
Detected the first magnitude of voltage of described water inlet end by the first conductivity sensor of described water inlet end, and detect the second magnitude of voltage of described water side by the second conductivity sensor of described water side;
Obtain described first electrical conductivity according to described first magnitude of voltage, and obtain described second electrical conductivity according to described second magnitude of voltage.
3. the detection method of reverse osmosis (RO) film as claimed in claim 2, is characterized in that, obtain described first electrical conductivity and described second electrical conductivity according to following formula (1) and (2):
C1=(U1 ÷ A) × B, (1) wherein, C1 is described first electrical conductivity, and U1 is described first magnitude of voltage, and A is full range voltage, and B is the full scale of testing conductivity sensor setting;
C2=(U2 ÷ A) × B, (2) wherein, C2 is described second electrical conductivity, and U2 is described second magnitude of voltage, and A is described full range voltage, and B is the full scale of described testing conductivity sensor setting.
4. the detection method of reverse osmosis (RO) film as claimed in claim 3, is characterized in that, obtain described salt rejection rate according to following formula (3):
D=(C1-C2) ÷ C1 × 100%, (3) wherein, D is described salt rejection rate, and C1 is described first electrical conductivity, and C2 is described second electrical conductivity.
5. a checkout gear for reverse osmosis (RO) film, is characterized in that, comprising:
First conductivity sensor, described first conductivity sensor is arranged on the water inlet end of reverse osmosis (RO) film, for detecting the first magnitude of voltage of described water inlet end;
Second conductivity sensor, described second conductivity sensor is arranged on the water side of described reverse osmosis (RO) film, for detecting the second magnitude of voltage of described water side;
Circuit module, described circuit module is connected with described second conductivity sensor with described first conductivity sensor respectively, described circuit module is used for obtaining the first electrical conductivity according to described first magnitude of voltage, and obtain the second electrical conductivity according to described second magnitude of voltage, and obtain salt rejection rate according to described first electrical conductivity and described second electrical conductivity, described circuit module judges whether described salt rejection rate is less than default salt rejection rate threshold value, when described salt rejection rate is less than default salt rejection rate threshold value, described circuit module prompting user changes described reverse osmosis (RO) film.
6. the checkout gear of reverse osmosis (RO) film as claimed in claim 5, is characterized in that, described circuit module, also for powering for described first conductivity sensor and described second conductivity sensor.
7. the checkout gear of the reverse osmosis (RO) film as described in claim 5 or 6, is characterized in that, described circuit module obtains described first electrical conductivity and described second electrical conductivity according to following formula (1) and (2):
C1=(U1 ÷ A) × B, (1) wherein, C1 is described first electrical conductivity, and U1 is described first magnitude of voltage, and A is full range voltage, and B is the full scale of testing conductivity sensor setting;
C2=(U2 ÷ A) × B, (2) wherein, C2 is described second electrical conductivity, and U2 is described second magnitude of voltage, and A is described full range voltage, and B is the full scale of described testing conductivity sensor setting.
8. the checkout gear of reverse osmosis (RO) film as claimed in claim 7, it is characterized in that, described circuit module obtains described salt rejection rate according to following formula (3):
D=(C1-C2) ÷ C1 × 100%, (3) wherein, D is described salt rejection rate, and C1 is described first electrical conductivity, and C2 is described second electrical conductivity.
9. a water purifier, is characterized in that, comprises the checkout gear of the reverse osmosis (RO) film according to any one of claim 5-8.
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| CN201410281416.5A CN105289313A (en) | 2014-06-20 | 2014-06-20 | Reverse osmosis RO membrane detection method and device, and water purification machine |
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Cited By (1)
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| CN111569663A (en) * | 2020-05-22 | 2020-08-25 | 湖南北控威保特环境科技股份有限公司 | Membrane column race monitoring system and method of DTRO (delay tolerant ro) equipment |
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