CN102042965B - On-line broad-spectrum water quality analyzer - Google Patents
On-line broad-spectrum water quality analyzer Download PDFInfo
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- CN102042965B CN102042965B CN 201010549246 CN201010549246A CN102042965B CN 102042965 B CN102042965 B CN 102042965B CN 201010549246 CN201010549246 CN 201010549246 CN 201010549246 A CN201010549246 A CN 201010549246A CN 102042965 B CN102042965 B CN 102042965B
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Abstract
The invention provides an on-line broad-spectrum water quality analyzer, which is characterized by comprising an ultraviolet visible light detection device, a near infrared light detection device, a controller in circuit connection with the ultraviolet visible light detection device and the near infrared light detection device respectively, a head shell, a connecting plate connected with the head shell, and a tail shell connected with the connecting plate, wherein the head shell, the connecting plate and the tail shell have sealing structures. Optical devices are hermetically arranged in a sealed inner chamber and are connected by optical fibers simultaneously, so that equipment meets the requirement of on-line underwater using and the using environment of the equipment is further widened; and spectrums of an ultraviolet visible light source and a near infrared light source are combined into a broad spectrum, so that a detection spectrum can cover a wider spectrum range.
Description
Technical field
The present invention relates to a kind of analyser of photoelectric detection technology field, it is near infrared at live width spectrum Water Test Kits to be specifically related to a kind of UV, visible light.
Background technology
The application of spectroanalysis instrument and extensive is such as the radiation of research material; The interaction of research light and material; Quantitative and the qualitative analysis of the structure of research material, content of material; Survey size, quality, temperature, movement velocity and the direction etc. of the remote celestial body and the sun.In industries such as mining, metallurgy, oil, chemical industry, spectroanalysis instrument is used for the material qualitative and quantitative analysis, is one of main means of control product quality; In biological chemistry and medical science, spectroanalysis instrument is used for the micronutrient levels analysis.The application of spectroanalysis instrument in water quality monitoring is a brand-new field.
At present; Existing spectroanalysis instrument is used in laboratory or the commercial production more; Be not suitable for monitoring water quality on line, more can not be placed on spectroanalysis instrument in the water, and these spectroanalysis instruments have such as bulky, environment for use require harsh, spectral range is narrow and shortcoming such as maintenance cost height.Most underwater measurement devices all are to adopt the air compression to clean, and not only waste energy, and noise are bigger, does not meet environmental protection concept.Problems such as the equipment that has does not just have automatic cleaning function, needing to cause great amount of manpower to go to safeguard, can not accomplish real-time cleaning, thereby cause the serviceable life of instrument shorter, and reliability is lower.
Summary of the invention
It is a kind of at live width spectrum Water Test Kits that the present invention provides, and can immerse fully and carry out water quality monitoring in the water, and spectral range covers from 200nm to 2500nm, possesses the ultrasound wave automatic cleaning function, can be applied to monitorings such as rivers and lakes sewage.
For realizing above-mentioned purpose; It is a kind of at live width spectrum Water Test Kits that the present invention provides; It is characterized in that this analyser comprises UV, visible light optical detection device, near infrared light pick-up unit, and the controller that is connected with near infrared light pick-up unit circuit with this UV, visible light electro-optical device respectively;
The web joint that this analyser also comprises head shell, is connected with this head shell, and the afterbody shell that is connected with this web joint; Above-mentioned head shell, web joint and afterbody shell all are made as hermetically-sealed construction.
First optical window that above-mentioned UV, visible light optical detection device comprises the UV, visible light light source, be connected with this UV, visible light light source through optical fiber, second optical window that is oppositely arranged with this first optical window, the uv-vis spectra detector that is connected through optical fiber with this second optical window;
Above-mentioned uv-vis spectra detector adopts the UV, visible light fiber spectrometer, and response wave length is 200nm to 900nm.
The 3rd optical window that above-mentioned near infrared light pick-up unit comprises near-infrared light source, be connected with this near-infrared light source through optical fiber, the 4th optical window that is oppositely arranged with the 3rd optical window, the near infrared spectrum detector that is connected through optical fiber with the 4th optical window;
Above-mentioned near infrared spectrum detector adopts light-near infrared optical fiber spectrograph, and response wave length is 900nm to 2500nm.
This analyser also comprises the ultrasonic transducer that is connected with above-mentioned controller circuitry; This controller also is connected with above-mentioned uv-vis spectra detector, near infrared spectrum detector, UV, visible light light source and near infrared light source circuit respectively.
This analyser also comprises first stepper motor that is fixedly connected with first optical window, and second stepper motor that is fixedly connected with the 3rd optical window; This first stepper motor is also distinguished circuit with second stepper motor and is connected controller.
Above-mentioned UV, visible light light source, near-infrared light source, first stepper motor and second stepper motor are arranged in the inner chamber of head shell;
The first above-mentioned optical window and the 3rd optical window are arranged on head shell and the sidewall that web joint links to each other;
Above-mentioned ultrasonic transducer is arranged on the web joint;
The second above-mentioned optical window and the 4th optical window are arranged on afterbody shell and the sidewall that web joint links to each other;
Above-mentioned uv-vis spectra detector, near infrared spectrum detector and controller are arranged in the inner chamber of afterbody shell.
The first above-mentioned optical window, second optical window, the 3rd optical window and the 4th optical window, it also is respectively equipped with the fiber optic collimator mirror with the junction of optical fiber separately.
Above-mentioned adopts UV, visible light optical fiber with the optical fiber that the UV, visible light light source is connected with the uv-vis spectra detector respectively;
Above-mentioned adopts near infrared optical fiber with the optical fiber that near-infrared light source is connected with the near infrared spectrum detector respectively.
Also be provided with interface circuit on the above-mentioned controller; Controller is connected with external follow-up equipment communication through this interface circuit.
Be oppositely arranged between the first above-mentioned optical window and second optical window and constitute absorption cell, the distance between this first optical window and the second optical window outside surface is for absorbing light path;
Be oppositely arranged between the 3rd above-mentioned optical window and the 4th optical window and constitute absorption cell, the distance between the 3rd optical window and the 4th optical window outside surface is for absorbing light path.
To put at live width spectrum Water Test Kits and specify the waters of carrying out water quality detection, start UV, visible light light source, near-infrared light source, uv-vis spectra detector and near infrared spectrum detector, and connect and detect light path through controller.Near infrared spectrum detector and uv-vis spectra detector receiving optical signals export controller to, and controller is combined into the whole spectrum of a 200nm to 2500nm with spectral signal, export the follow-up equipment demonstration to or analyze spectroscopic data through interface circuit.
Different according to the medium that detects, in the time of can adjusting the absorbing light journey.Control first stepper motor and second stepper motor through controller, accurately adjust the position of first optical window and the 3rd optical window, precisely adjustment absorbs light path.
When needs clean first optical window, second optical window, the 3rd optical window and the 4th optical window; Controller starts ultrasonic transducer; Send ultrasound wave to first optical window, second optical window, the 3rd optical window and the 4th optical window, realize automatic cleaning optical window.
The present invention compares with prior art at live width spectrum Water Test Kits, and its advantage is that each optical device sealing is arranged in the inner chamber of head shell and afterbody shell among the present invention, adopts optical fiber to connect simultaneously between each optical device.Make equipment satisfy online use under water, make the environment for use of instrument further widen;
The present invention is provided with corresponding UV, visible light light source and uv-vis spectra detector; Be provided with corresponding light-near infrared optical fiber spectrograph and near-infrared light source simultaneously; Through controller both spectrum are merged; Can make detecting light spectrum cover wider spectral range, can carry out qualitative analysis and quantitative measurment more material;
The present invention is provided with the stepper motor that is fixedly connected with optical window, and optical window can move freely in the warp of the light path road of absorption cell under the driving of stepper motor, has realized that light path is adjustable;
The present invention is provided with ultrasonic transducer, lets this equipment have environmental protection through ultrasonic cleaning, low noise, multiple functions such as automatic maintenance.
Description of drawings
Fig. 1 is the schematic diagram of the present invention at live width spectrum Water Test Kits;
Fig. 2 is the general structure synoptic diagram of the present invention at live width spectrum Water Test Kits.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described.
As shown in Figure 1, the present invention has explained a kind of at live width spectrum Water Test Kits, and this analyser has comprised two light paths.Article one, the optical device of light path comprise a UV, visible light light source 1, first optical window 7 that is connected with this UV, visible light light source 1 through optical fiber, second optical window 11 that is oppositely arranged with this first optical window 7, the uv-vis spectra detector 17 that is connected through optical fiber with this second optical window 11.Junction at first optical window 7 and optical fiber is provided with fiber optic collimator mirror 5, also is provided with fiber optic collimator mirror 13 in the junction of second optical window 11 and optical fiber.Laterally arrange between first optical window 7 and second optical window 11; First optical window 7, second optical window 11; And the absorption cell of this light path of the formation of medium between the two, it absorbs light path is the distance between first optical window 7 and second optical window, 11 opposed outer surface.Be provided with first stepper motor, 9, the first optical windows 7 at first optical window, 7 places and be stably fixed on first stepper motor 9, this first optical window 7 can be driven by first stepper motor 9, along the road of light path through moving forward and backward.Drive first optical window 7 through first stepper motor 9, can change the absorption light path of the absorption cell that constitutes between first optical window 7 and second optical window 11.
In this UV, visible light light path, UV, visible light light source 1 adopts deuterium tungsten Assembled lamp.Optical fiber 3 in this light path adopts UV, visible light optical fiber with optical fiber 15, and its characteristic is core diameter 400 μ m, SMA905 joint, high OH
-Pure silica fibre.First optical window 7 and second optical window 11 adopt the sapphire window of diameter 10mm, thickness 3mm.It is the quartz lens of 10mm, SMA905 joint that fiber optic collimator mirror 5 adopts diameter with fiber optic collimator mirror 13.It is the UV, visible light fiber spectrometer of 200nm to 900nm that uv-vis spectra detector 17 adopts response wave length.
The 3rd optical window 8 that the optical device of another light path comprises a near-infrared light source 2, be connected with this near-infrared light source 2 through optical fiber, the 4th optical window 12 that is oppositely arranged with the 3rd optical window 8, the near infrared spectrum detector 18 that is connected through optical fiber with the 4th optical window 12.Junction at the 3rd optical window 8 and optical fiber is provided with the fiber optic collimator mirror 6 that is used for collimated light path, also is provided with the fiber optic collimator mirror 14 that is used for collimated light path in the junction of the 4th optical window 12 and optical fiber.Laterally arrange between the 3rd optical window 8 and the 4th optical window 12; The 3rd optical window 8, the 4th optical window 12 and medium between the two thereof constitute the absorption cell of this light path, and it absorbs light path is the distance between the 3rd optical window 8 and the 4th optical window 12 opposed outer surface.Be provided with second stepper motor, 10, the three optical windows 8 at the 3rd optical window 8 places and be fixed on second stepper motor 10, the 3rd optical window 8 can be driven by second stepper motor 10, along the road of light path through moving forward and backward.Drive the 3rd optical window 8 through second stepper motor 10 and move the distance that changes between the 3rd optical window 8 and the 4th optical window 12, can change the absorption light path of the absorption cell that constitutes between the 3rd optical window 8 and the 4th optical window 12.
In this near infrared light path, near-infrared light source 2 adopts halogen tungsten lamp.Optical fiber 4 adopts near infrared optical fiber with optical fiber 16, and its parameter is core diameter 400 μ m, SMA905 joint, low OH
-Pure silica fibre.The 3rd optical window 8 and the 4th optical window 12 adopt the sapphire window of diameter 10mm, thickness 3mm.It is the quartz lens of 10mm, SMA905 joint that fiber optic collimator mirror 6 adopts diameter with fiber optic collimator mirror 14.It is the light-near infrared optical fiber spectrograph of 900nm to 2500nm that near infrared spectrum detector 18 adopts response wave length.
This analyser also comprises controller 20, and the ultrasonic transducer 19 and interface circuit 21 that are connected with these controller 20 circuit respectively.The power of ultrasonic transducer 19 is 60W, and the vibration plane diameter is 40mm, is used to clean optical window; Interface circuit 21 adopts RS485, sets up communication, transceive data and control command through interface circuit 21 and external follow-up equipment.
As shown in Figure 1, controller 20 also is connected with uv-vis spectra detector 17, near infrared spectrum detector 18, UV, visible light light source 1, near-infrared light source 2, first stepper motor 9 and second stepper motor, 10 circuit respectively.This controller 20 is ultrasonic transducer 19, uv-vis spectra detector 17, near infrared spectrum detector 18, UV, visible light light source 1, near-infrared light source 2, first stepper motor 9 and 10 power supplies of second stepper motor, and switch control is provided.Controller 20 accurate control first stepper motor 9 and second stepper motors 10 are realized the absorption light path between the 3rd optical window 8 and the 4th optical window 12, and the accurate adjusting of the absorption light path between first optical window 7 and second optical window 11.And receive 200nm that uv-vis spectra detector 17 detects spectroscopic data simultaneously to 900nm; And the 900nm that detects of near infrared spectrum detector 18 is to the spectroscopic data of 2500nm; And handle with two spectral combination together, constitute the wide spectroscopic data of 200nm to 2500nm.Controller 20 is also controlled the cleaning of 19 pairs first optical windows of ultrasonic transducer 7, second optical window 11, the 3rd optical window 8 and the 4th optical window 12.
As shown in Figure 2, the present invention is at live width spectrum Water Test Kits, and it is set to a kind of system of anti-water seal.
The web joint 23 that this analyser also comprises head shell 22, is connected with this head shell 22, and the afterbody shell 24 that is connected with this web joint 23.Head shell 22, web joint 23 and afterbody shell 24 linearly are provided with.This head shell 22 all is made as hermetically-sealed construction.
UV, visible light light source 1, near-infrared light source 2, first stepper motor 9 and second stepper motor 10 are arranged in the inner chamber of head shell 22.First optical window 7 and the 3rd optical window 8 are arranged on the sidewall of junction between head shell 22 and the web joint 23, and an end of first optical window 7 and the 3rd optical window 8 is arranged on outside the head shell 22 simultaneously.
Uv-vis spectra detector 17, near infrared spectrum detector 18 and controller 20 are arranged in the inner chamber of afterbody shell 24.Second optical window 11 and the 4th optical window 12 are arranged on the sidewall of junction between web joint 23 and the afterbody shell 24, and an end of second optical window 11 and the 4th optical window 12 is arranged on outside the afterbody shell 24 simultaneously.
First optical window 7 and second optical window 11 are oppositely arranged, and light path is through collimation, but the light that from first optical window 7, penetrates incident second optical window 11 after through intermediate medium is gone forward side by side into optical fiber 15.Same the 3rd optical window 8 and the 4th optical window 12 are oppositely arranged, and light path is through collimation, but the light that from the 3rd optical window 8, penetrates collimation incident the 4th optical window 12 after through the medium of centre is gone forward side by side into optical fiber 16.
The present invention is following in the operation workflow of live width spectrum Water Test Kits: controller 20 energized of analyser, adopt interface circuit 21 and external follow-up equipment to connect simultaneously.To put at live width spectrum Water Test Kits and specify the waters of carrying out water quality detection, start UV, visible light light source 1, near-infrared light source 2, uv-vis spectra detector 17 and near infrared spectrum detector 18, and connect and detect light path through controller 20.UV, visible light light source 1 sends ultraviolet-visible and transmits and incident first optical window 7 behind fiber optic collimator mirror 5 collimations through optical fiber 3; Ultraviolet-visible is again from 7 outputs of first optical window; Through second optical window 11 of incident behind the water to be detected; From 11 outputs of second optical window, input to uv-vis spectra detector 17 through fiber optic collimator mirror 13 and optical fiber 15.Simultaneously; Near-infrared light source 2 send near infrared light through optical fiber 4 transmission and behind fiber optic collimator mirror 6 collimations incident the 3rd optical window 8 near infrared lights again from 8 outputs of the 3rd optical window; Through the 4th optical window 12 of incident behind the water to be detected; From 12 outputs of the 4th optical window, input near infrared spectrum detector 18 through fiber optic collimator mirror 14 and optical fiber 16.Near infrared spectrum detector 18 and uv-vis spectra detector 17 receiving optical signals; Output spectrum signal to controller 20; Controller 20 is with the spectral signal of the 200nm to 900nm of near infrared spectrum detector 18 outputs; And the spectral signal of the 900nm to 2500nm of uv-vis spectra detector 17 outputs, be combined into the whole spectrum of a 200nm to 2500nm, export the follow-up equipment demonstration to or analyze spectroscopic data through interface circuit 21.
Different according to the medium that detects, need the absorption light path between adjustment first optical window 7 and second optical window 11, when reaching the absorption light path between the 3rd optical window 8 and the 4th optical window 12.Then through controller 20 control first stepper motor 9 and second stepper motors 10, accurately adjust the position of first optical window 7 and the 3rd optical window 8, precisely adjustment absorbs light path.
When needs clean first optical window 7, second optical window 11, the 3rd optical window 8 and the 4th optical window 12; Controller 20 starts ultrasonic transducer 19; Send ultrasound wave to first optical window 7, second optical window 11, the 3rd optical window 8 and the 4th optical window 12, realize automatic cleaning optical window.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (7)
1. one kind at live width spectrum Water Test Kits, it is characterized in that this analyser comprises UV, visible light optical detection device, near infrared light pick-up unit, and the controller (20) that is connected with near infrared light pick-up unit circuit with said UV, visible light electro-optical device respectively;
The web joint (23) that this analyser also comprises head shell (22), is connected with said head shell (22), and the afterbody shell (24) that is connected with said web joint (23); Described head shell (22), web joint (23) and afterbody shell (24) all are made as hermetically-sealed construction;
First optical window (7) that described UV, visible light optical detection device comprises UV, visible light light source (1), be connected with said UV, visible light light source (1) through optical fiber, second optical window (11) that is oppositely arranged with said first optical window (7), the uv-vis spectra detector (17) that is connected through optical fiber with said second optical window (11);
Described uv-vis spectra detector (17) adopts the UV, visible light fiber spectrometer, and response wave length is 200nm to 900nm;
The 3rd optical window (8) that described near infrared light pick-up unit comprises near-infrared light source (2), be connected with said near-infrared light source (2) through optical fiber, the 4th optical window (12) that is oppositely arranged with said the 3rd optical window (8), the near infrared spectrum detector (18) that is connected through optical fiber with said the 4th optical window (12);
Described near infrared spectrum detector (18) adopts light-near infrared optical fiber spectrograph, and response wave length is 900nm to 2500nm;
This analyser also comprises the ultrasonic transducer (19) that is connected with said controller (20) circuit; Said controller (20) is connected with said uv-vis spectra detector (17), near infrared spectrum detector (18), UV, visible light light source (1) and near-infrared light source (2) circuit respectively.
2. as claimed in claim 1 at live width spectrum Water Test Kits; It is characterized in that; This analyser also comprises first stepper motor (9) that is fixedly connected with said first optical window (7), and second stepper motor (10) that is fixedly connected with said the 3rd optical window (8); Said first stepper motor (9) and second stepper motor (10) also respectively circuit be connected described controller (20).
3. as claimed in claim 1 at live width spectrum Water Test Kits; It is characterized in that described UV, visible light light source (1), near-infrared light source (2), first stepper motor (9) and second stepper motor (10) are arranged in the described head shell (22);
Described first optical window (7) and the 3rd optical window (8) are arranged on described head shell (22) and the sidewall that web joint (23) links to each other;
Described ultrasonic transducer (19) is arranged on the described web joint (23);
Described second optical window (11) and the 4th optical window (12) are arranged on said afterbody shell (24) and the sidewall that web joint (23) links to each other;
Described uv-vis spectra detector (17), near infrared spectrum detector (18) and controller (20) are arranged in the described afterbody shell (24).
4. as claimed in claim 1 at live width spectrum Water Test Kits; It is characterized in that; Described first optical window (7), second optical window (11), the 3rd optical window (8) and the 4th optical window (12), it also is respectively equipped with fiber optic collimator mirror (5,6,13,14) with the junction of optical fiber separately.
5. as claimed in claim 1ly it is characterized in that, describedly adopt UV, visible light optical fiber with the optical fiber (3,15) that UV, visible light light source (1) is connected with uv-vis spectra detector (17) respectively at live width spectrum Water Test Kits;
The described optical fiber (4,16) that is connected with near infrared spectrum detector (18) with near-infrared light source (2) respectively adopts near infrared optical fiber.
6. as claimed in claim 1ly it is characterized in that, also be provided with interface circuit (21) on the described controller (20) at live width spectrum Water Test Kits; Described controller (20) is connected with external follow-up equipment communication through described interface circuit (21).
7. as claimed in claim 1 at live width spectrum Water Test Kits; It is characterized in that; Be oppositely arranged between described first optical window (7) and second optical window (11) and constitute absorption cell, the distance between said first optical window (7) and second optical window (11) outside surface is for absorbing light path;
Be oppositely arranged between described the 3rd optical window (8) and the 4th optical window (12) and constitute absorption cell, the distance between said the 3rd optical window (8) and the 4th optical window (12) outside surface is for absorbing light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010549246 CN102042965B (en) | 2010-11-18 | 2010-11-18 | On-line broad-spectrum water quality analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010549246 CN102042965B (en) | 2010-11-18 | 2010-11-18 | On-line broad-spectrum water quality analyzer |
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| Publication Number | Publication Date |
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| CN102042965A CN102042965A (en) | 2011-05-04 |
| CN102042965B true CN102042965B (en) | 2012-07-11 |
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| CN 201010549246 Expired - Fee Related CN102042965B (en) | 2010-11-18 | 2010-11-18 | On-line broad-spectrum water quality analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105363A (en) * | 2012-11-06 | 2013-05-15 | 苏州聚阳环保科技有限公司 | Water quality detector with temperature isolation |
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| CN102410984A (en) * | 2011-08-09 | 2012-04-11 | 上海衡伟信息技术有限公司 | Spectrum-based fast recognition method of organic matters in surface water |
| CN102706863B (en) * | 2012-04-23 | 2015-12-16 | 宁波大学 | There is self-cleaning function and without the Electrochemiluminescprocess process pick-up unit of additional interference |
| DE102013111235A1 (en) | 2012-12-19 | 2014-06-26 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Arrangement for the optical measurement of one or more physical, chemical and / or biological process variables of a medium |
| CN103149181B (en) * | 2013-01-31 | 2015-04-01 | 杭州华光光电有限公司 | Glass light transmittance detection device |
| US9151671B2 (en) * | 2013-08-26 | 2015-10-06 | Thermo Electron Scientific Instruments Llc | Motorized variable path length cell for spectroscopy |
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| CN107144540B (en) * | 2017-04-07 | 2020-01-17 | 哈尔滨工程大学 | Device for measuring KHP content in water by ultraviolet-visible light photometry |
| CN106932354B (en) * | 2017-05-16 | 2019-10-22 | 中国电子科技集团公司第四十九研究所 | A kind of TOC water quality monitoring sensor |
| CN107340237B (en) * | 2017-09-08 | 2021-01-29 | 中清盈创(深圳)科技有限公司 | Water quality on-line monitoring device based on light emitting diode |
| CN108318972B (en) * | 2018-03-14 | 2019-12-03 | 北京宏源四方科技开发有限公司 | A kind of optical fiber connection seal and pressure bearing connector |
| CN110823842A (en) * | 2018-08-07 | 2020-02-21 | 中清盈创(深圳)科技有限公司 | Novel optical water quality monitoring sensor device and design method |
| CN110954477B (en) * | 2018-09-21 | 2021-12-21 | 中国科学院宁波材料技术与工程研究所 | Infrared spectrometer accessory |
| CN110887801B (en) * | 2019-11-27 | 2021-02-19 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method |
| CN110887799A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method |
| CN111579513A (en) * | 2020-05-20 | 2020-08-25 | 长春师范大学 | Full-automatic portable water quality spectrum detector |
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| AU2002250295A1 (en) * | 2001-03-16 | 2002-10-03 | Ewatertek Inc. | System and method for monitoring water quality and transmitting water quality data |
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|---|---|---|---|---|
| CN1079301A (en) * | 1992-03-04 | 1993-12-08 | 格雷斯公司 | Monitoring in the time of the multiple water treatment performance indicators |
| WO2008118463A1 (en) * | 2007-03-27 | 2008-10-02 | Mycelx Technologies Corporation | Visual bilgewater quality indicator |
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| CN103105363A (en) * | 2012-11-06 | 2013-05-15 | 苏州聚阳环保科技有限公司 | Water quality detector with temperature isolation |
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| CN102042965A (en) | 2011-05-04 |
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