KR20160051953A - Apparatus for doing quality control of water quality measuring apparatus - Google Patents

Apparatus for doing quality control of water quality measuring apparatus Download PDF

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Publication number
KR20160051953A
KR20160051953A KR1020140149306A KR20140149306A KR20160051953A KR 20160051953 A KR20160051953 A KR 20160051953A KR 1020140149306 A KR1020140149306 A KR 1020140149306A KR 20140149306 A KR20140149306 A KR 20140149306A KR 20160051953 A KR20160051953 A KR 20160051953A
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tank
stock solution
reference stock
sample
water quality
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KR1020140149306A
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Korean (ko)
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이진필
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이손이엔엘 (주)
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Priority to KR1020140149306A priority Critical patent/KR20160051953A/en
Publication of KR20160051953A publication Critical patent/KR20160051953A/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C02F2209/008—Processes using a programmable logic controller [PLC] comprising telecommunication features, e.g. modems or antennas

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Water Supply & Treatment (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The apparatus for managing water quality measurement supporting the quality control operation of the water quality measuring apparatus in connection with the water quality measuring apparatus according to an embodiment of the present invention includes at least one reference stock solution tank in which one or more reference stock solutions are respectively received; A metering tank which is connected to each of the reference stock tank through pipes and accommodates each reference stock solution transferred from each reference stock tank and is formed to have a predetermined volume; One side of which is connected to the quantitative tank through a pipe and the other side of which is connected to the water quality measuring device through a pipe; And an operation for transferring the reference stock solution stored in the reference sample tank to the water quality measurement apparatus, and a step for transferring the reference stock solution received in the sample tank to the water quality measurement apparatus. And a controller unit for controlling the controller.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water quality measurement accuracy management apparatus,

The present invention relates to a water quality measurement accuracy management apparatus, and more particularly, to a water quality measurement accuracy management apparatus that dilutes and manufactures a sample required for quality control when the water quality measurement apparatus performs a quality control operation, So that the quality management can be accurately performed for a long period of time without an administrator having to reside.

In order to manage water quality, we construct a water quality remote monitoring system (TMS) that can scientifically measure the pollution degree and discharge amount of wastewater, and make the workplace attach an automatic water quality measuring instrument to measure the pollutant discharge concentration at all times. In order to promote the transparency and efficiency of the guidance and inspection work, the government also implements the water quality remote monitoring system in order to scientifically and rationally implement the water pollution management system. System (TMS) construction project ".

The water quality remote monitoring system (TMS) is essential for the prevention of water pollution in advance by managing the pollutant discharge amount remotely from the source level, and managing the emission of pollutants more systematically and efficiently, as well as for establishing the basis of environmental information. Once the water quality remote monitoring system (TMS) has been established, it is possible to establish an environment information system that can manage the water pollution in the whole country by establishing a sharing system between the Ministry of Environment, local governments, .

In the water quality TMS, the automatic measurement data is immediately sent to the control center and used as administrative data. Therefore, it is required to maintain and manage the automatic measuring device normally at all times. Therefore, before the failure of the automatic measuring device, Should be equipped. In case the data is not transmitted to the control center due to the occurrence of invalid data due to the inspection of the measuring instrument or the temporary abnormal condition of the measuring device despite the normal operation of the discharge facility and the preventive facility, Alternative data may need to be created to replace it, and disadvantages and disputes that may occur when creating alternate data can be reduced if the equipment is well managed and does not produce invalid data.

The on-going water quality automatic meter must be periodically inspected to maintain the reliability of the measurement data, and methods and procedures for managing the conversion through periodic calibration should also be established. In addition to the collection of measurement data, the control center also analyzes the trends of the workplace by statistical analysis of the measurement data and provides technical support for the status and calibration of the measuring equipment. It is distributed to the operation manager and is used as a guide for the operation of the automatic measuring instrument.

Some of the measuring instruments for water quality continuous automatic meter are to manage the quality according to water quality pollution process test standard. For the continuous automatic measuring instrument in the water pollution process test standard, the Korea Environment Corporation visits the site once a year and continuously monitors it under the name of degree inspection and integrated inspection. The quality management of such a water quality measuring device requires several repetitive measurement operations. During the time of performing the repeated measurement, the manager must continuously perform maintenance on the measuring device. That is, the degree of control can be performed only when the administrator repeatedly performs operations such as dilution, manufacture, and input of the sample required for the repeat operation of the accuracy management. In the case of a measuring instrument with long analysis time, it takes a few days, which causes a problem of wasting human labor.

In addition, in the case of a mobile water quality heavy metal measuring device as well as a general water quality continuous measuring device, since the measurement can be performed only after the quality control is performed in the moved place, the problem of inefficiency due to wasted manpower is becoming more important. Accordingly, development of a device capable of automatically performing the quality management operation of the water quality measuring device is desired.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above problems, and it is an object of the present invention to provide a water quality measuring apparatus and a water quality measuring apparatus in which, when a water quality measuring apparatus performs a quality control operation, And to provide a water quality measurement accuracy management apparatus that can accurately perform quality control for a long period of time without an administrator resident.

According to an aspect of the present invention, there is provided a water quality measurement accuracy management apparatus for supporting a quality control operation of a water quality measurement apparatus in association with a water quality measurement apparatus according to an embodiment of the present invention, One or more reference stock solution tanks each containing one or more reference stock solutions; A metering tank which is connected to each of the reference stock tank through pipes and accommodates each reference stock solution transferred from each reference stock tank and is formed to have a predetermined volume; One side of which is connected to the quantitative tank through a pipe and the other side of which is connected to the water quality measuring device through a pipe; And an operation for transferring the reference stock solution stored in the reference sample tank to the water quality measurement apparatus, and a step for transferring the reference stock solution received in the sample tank to the water quality measurement apparatus. And a controller unit for controlling the controller.

The apparatus for managing the quality of water quality according to an embodiment of the present invention may further include: at least one metering tubulation pipe connecting the reference stock solution tank and the metering tank; At least one metering valve interposed in each of the at least one metering tubing conduits; A control valve provided in each of the one or more metering tubulation pipes corresponding to the metering valve isolation valves to control the opening and shutting of the metering valve and to control each of the reference fluid solutions to be transferred from the reference detoy tank to the metering tank At least one metering hopper pump; The overflow pipe having one end connected to the metering tank and the other end exposed to the outside to receive a predetermined amount of solution in the metering tank and to discharge the remainder to the outside; A sample tubulation pipe connecting the quantification tank and the target sample tank; An object sample vessel shutoff valve installed in the object sample vessel pipe; An object sample hopper pump installed in the sample sample pipe corresponding to the sample sample cutoff valve to control the opening and closing of the sample sample shutoff valve and to control the sample of the quantitative sample to be transferred to the sample sample tank; And a sampling pipe connecting the object sample tank and the water quality measuring device.

In addition, the controller unit of the water quality measurement accuracy management apparatus according to an embodiment of the present invention may be configured such that, when the first reference stock solution is requested to be supplied from the at least one reference stock solution from the water quality measurement apparatus, 1 control means for controlling the first quantitative actuation shutoff valve provided in the first quantitative autotransport pipe connected to the one reference stock solution tank to be switched to the open state, 1 reference stock solution is transferred to the fixed amount tank for a predetermined time.

The controller unit of the water quality measurement accuracy management apparatus according to an embodiment of the present invention may be configured such that while the first reference stock solution is being transferred from the first reference undiluted solution tank to the fixed amount tank, And controls to switch the target sample vessel isolation valve to the open state when the first reference stock solution is transferred from the first reference stock solution tank to the quantitation tank, 1 reference stock solution is transferred from the quantification tank to the target sample tank.

According to another aspect of the present invention, there is provided an apparatus for managing quality of water quality, including: an ultrapure water tank in which ultrapure water is accommodated; An ultra pure water pipe connecting the ultrapure water tank and the metering tank; An ultra pure water shutoff valve installed in the ultra pure water pipe; And an ultra pure water feed pump installed in the ultra pure water pipe corresponding to the ultra pure water cutoff valve and controlling the opening and shutting of the ultra pure water cutoff valve and controlling the ultra pure water to be transferred from the ultra pure water tank to the constant water tank do.

In addition, the controller unit of the water quality measurement accuracy management apparatus according to an embodiment of the present invention may be configured such that, when receiving the supply of the second sample diluted by the second reference stock solution out of the one or more reference stock solutions from the water quality measurement apparatus, 2 control valve so that the second metering valve is provided in the second metering valve connected to the second reference fluid tank stored in the second reference fluid, The control unit controls the second reference stock solution to be transferred to the reference tank for a predetermined time through the transfer pump and controls the ultrapure water shutoff valve to be switched to the open state so that the ultrapure water is transferred to the reference tank through the ultrapure water transfer pump. And a control unit.

In the controller unit of the water quality measurement accuracy management apparatus according to an embodiment of the present invention, when request is made to supply the second sample whose mixing ratio of the second reference stock solution and the ultrapure water is set to 1: N, The duration of the open state of the first shutoff valve is set to be N times the duration of the open state of the second shutoff valve.

According to the water quality measurement accuracy management device of the present invention, when the quality control of the water quality measurement device is performed in conjunction with the water quality measurement device, the sample required for the quality control is automatically provided to the water quality measurement device at the time of input, It is possible to obtain an effect that an accurate quality control operation can be performed for a long time without being resident.

According to the water quality measurement accuracy management apparatus of the present invention, the reference stock solution and the ultrapure water are diluted beforehand to prepare a sample, or two or more reference stock solutions and ultrapure water or distilled water are mixed at required ratios to prepare a sample So that it is possible to accurately input and supply various kinds of samples required for quality control of the water quality measuring apparatus even if the manager does not reside.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a configuration of a water quality measurement accuracy management system according to an embodiment of the present invention. FIG.
FIG. 2 to FIG. 6 are diagrams showing interface screens of a program for performing quality management in connection with a water quality measurement apparatus and a water quality measurement accuracy management apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a configuration of a water quality measurement accuracy management system according to an embodiment of the present invention. FIG.

The water quality measurement accuracy management system according to an embodiment of the present invention includes a water quality continuous automatic meter 101 and a water quality measurement accuracy management apparatus 100. The water quality continuous automatic measuring apparatus 101 is configured to measure a continuous water quality of the water contained in water such as copper (Cu), zinc (Zn), cadmium (Cd), mercury (Hg), lead (Pb), arsenic (As) ), Cyanide (CN), and the like. In this specification, the case where the water quality of copper is measured among various heavy metals will be described as an example.

Copper is present at 55 mg / kg in the crust and the abundance in the environment should be 2 ~ 100mg / kg in soil, 0.2 ~ 30μg / L in natural water and 10mg / kg in food. Copper reacts slowly in the air in dilute sulfuric acid to produce copper sulfate, which is well soluble in concentrated sulfuric acid and concentrated hydrochloric acid. It forms a complex with ammonia and dissolves well in organic acids such as acetic acid. Among the applicable test methods for copper, the quantitative limit of the ultraviolet / visible spectrum method is 0.01 mg / L and the precision can be set within ± 25%.

Copper-UV / Visible Spectrometry (Cu-UV / Visible Spectrometry) is a method for extracting a yellowish brown chelate compound, which is produced by reacting copper ions present in water with alkali sodium diethyldithiocarbamate, with butyl acetate to obtain an absorbance of 440 nm. < / RTI > This test standard can be applied to surface water, ground water, wastewater and so on. The reagents used in the copper-ultraviolet / visible spectroscopy method include sodium diethyldithiocarbamate solution, methacresol purple ethyl alcohol solution, ammonium dihydrogenate solution, potassium cyanide solution, acetic acid, butyl ester, C 6 H 12 O 2, molecular weight: 116.16), ammonia water, and disodium ethylenediaminetetraacetic acid solution. Also, copper standard stock solution (100 mg / L) and copper standard solution (1 mg / L) can be applied as a standard solution to be applied to copper-ultraviolet / visible ray spectroscopy.

According to an embodiment of the present invention, the water quality measurement accuracy management apparatus 100 includes at least one reference stock solution tank 110 in which one or more reference stock solutions are respectively received. Various solutions required for the quality control of the water quality automatic measuring device 101 can be respectively accommodated in the reference stock tank 110. That is, in the reference stock tank 110, various reference stock solutions, standard stock solutions, zero solutions, span solutions, and the like necessary for the quality management are accommodated for respective tanks, and the water quality measurement accuracy management device 100 In order to identify the type, the identifier of each tank and each corresponding solution identifier correspond to each other so that the recorded tank-solution table can be maintained.

The determination tank 120 is connected to each of the reference undiluted solution tank 110 through a pipe and is accommodated in each reference stock solution tank 110 and is formed to have a predetermined volume. The reference stock solution tank 110 and the quantitation tank 120 may be connected to each other through the quantitative adjustment pipes 111 so as to form a flow path through which the reference stock solution is transferred. A quantitative cut shutoff valve 112 and a fixed quantity feed pump 113 may be installed in each of the fixed amount adjustment pipes 111. The quantitative control shutoff valve 112 can open and shut off the flow path formed between the reference stock solution tank 110 and the quantitation tank 120 by switching between the open state and the shutoff state. The metering hopper feed pump 113 controls the opening and closing of the metering hopper shutoff valve 112 and operates to transfer each reference stock solution from the reference stock solution tank to the metering hopper 113 through the power transmitted through the motor .

The quantification tank 120 is formed to have a predetermined internal volume. The internal volume of the metering tank 120 may be set to correspond to a required amount of the solution to be supplied to the water quality automatic measuring device 101. When the first reference stock solution is requested to be conveyed from the water quality continuous automatic meter 101, the controller unit 140 controls the first reference stock solution tank, which is connected to the first reference stock solution tank containing the first reference stock solution, The shutoff valve may be controlled to be opened so that the first reference stock solution may be transferred from the first reference stock solution tank to the quantification tank 120 for a predetermined period of time through the first quantification tank transfer pump. The transfer time may be a time required until the first reference stock solution is filled in the inner space of the quantitation tank 120. For this, the controller unit 140 may calculate the time based on the flow rate of the reference stock solution transferred by the metering tank transfer pump 113 and the volume of the inner space of the metering tank, It may be possible to control the quantitative control shutoff valve 112 to be switched to the shutoff state at a time point when the weight reaches a predetermined weight or more.

The overflow pipe 121 may be installed in the metering tank 120. One end of the overflow pipe 121 may be connected to the inner space of the metering tank 120, and the other end may be installed to be exposed to the outside. Therefore, even if the reference stock solution transferred from the reference stock solution tank 110 is transferred by an amount larger than the internal space volume of the determination tank 120, the reference stock solution more than the set amount can be discharged to the outside through the overflow pipe 121, The amount of reference stock solution to be supplied to the continuous automatic measuring device 101 can be collected in the quantification tank 120. [ The installation height of the overflow pipe 121 may be varied so that the amount of the solution collected in the determination tank 120 may be set differently according to a required situation.

One side of the target sample tank 130 is connected to the metering tank 120 through a pipe, and the other side is connected to the water quality continuous automatic meter 101 through a pipe. The target sample vessel 130 is connected to the sample vessel 120 through the sample vessel 131. A target sample vessel isolation valve 132 and an object sample vessel transfer pump 133 are provided in the target sample vessel pipe 131 to control the transfer of the solution from the determination vessel 120 to the sample vessel 130. [ The target sample tank 130 may be connected to the water quality automatic meter 101 through a sampling pipe 102. When the reference stock solution is received in a predetermined amount after the reference stock solution is injected into the quantitation tank 120 and the reference stock solution is received in a predetermined amount in the quantitation tank 120, the reference stock solution contained in the quantitation tank 120 is transported to the sample tank 130 And can be transferred to the water quality automatic meter 101 through the sampling pipe 102.

The controller unit 140 controls the transfer of the reference stock solution to the quantitation tank 120, the transfer of the reference stock solution stored in the quantitation tank 120 to the sample tank 130, and the water quality of the reference stock solution contained in the sample tank 130 It is possible to control the operation for the transfer to the continuous automatic measuring device 101. [ For example, when the controller unit 140 receives a request for the supply of the first reference stock solution from one or more reference stock solutions from the water quality automatic measuring device 101, the controller unit 140 acquires the first reference stock solution from the first reference stock solution tank The control unit controls so that the first metering valve shutoff valve provided in the first metering tubing pipe is switched to the open state and the first reference metering valve is provided for the predetermined time period through the first metering tank feed pump provided corresponding to the first metering valve, It is possible to perform control so as to be transferred to the abovementioned metering tank.

The water quality measurement accuracy management apparatus 100 according to the present invention may dilute the concentration of the reference stock solution at the request of the water quality continuous automatic meter 101 or prepare a sample combined with another solution and provide the same to the water quality continuous automatic meter 101 Can operate. To this end, the water quality management apparatus 100 further includes an ultrapure water tank 150 in which ultrapure water is accommodated. The ultrapure water tank 150 is connected to the metering tank 120 through the ultra pure water pipe 151. The ultra pure water shutoff valve 152 and the ultra pure water feed pump 153 are installed in the ultra pure water pipe 151 to control the feeding of the ultra pure water.

The controller unit 140 is connected to the second reference stock solution tank accommodated in the second reference stock solution when the supply of the second reference sample solution diluted by the second reference stock solution out of the one or more reference stock solutions is requested from the water quality continuous automatic meter 101, And the second reference solution is supplied to the second reference solution through the second flow control pump provided in correspondence with the second flow control valve, So as to be transferred to the abovementioned quantitative tank. When the second reference stock solution is collected in the quantifying tank 120 by a predetermined amount, the second reference stock solution is then transferred to the object sample tank and the quantifying tank 120 becomes empty. At this time, the controller unit 140 controls the ultra- The control unit 153 and the valve 152 are controlled so that the ultrapure water is transferred to the quantifying tank 120 by an amount corresponding to the dilution magnification required. When the ultrapure water of the amount required for the quantification tank 120 is collected, the collected ultrapure water can be transferred to the object sample tank 130 containing the second reference stock solution and blended with the second reference stock solution. The thus combined sample can be supplied to the water quality automatic meter 101 through the sampling pipe 102.

In addition, when the supply of the second sample set at the mixing ratio of the second reference stock solution to the ultrapure water is set to 1: N, the controller unit 140 determines that the open state of the ultra pure water shutoff valve is maintained at the second To be set to N times the duration of the open state of the metering tank shutoff valve, so as to produce a dilution liquid corresponding to a desired mixing ratio and provide the dilution liquid to the water quality automatic meter 101. [ Thus, the water quality measurement accuracy management apparatus 100 can automatically dilute the reference stock solution with ultrapure water to a desired mixing ratio, and automatically dilute the reference stock solution with the water quality continuous automatic measuring device 101. In addition, it may be operated to prepare a sample through a combination of not only concentration dilution depending on the combination with ultrapure water but also with another reference stock solution, standard stock solution, distilled water, etc., and provide the sample to the water quality automatic measuring device 101.

FIG. 2 to FIG. 6 are diagrams showing interface screens of a program for performing quality management in connection with a water quality measurement apparatus and a water quality measurement accuracy management apparatus according to an embodiment of the present invention.

The water quality continuous automatic measuring apparatus 101 and the water quality measurement accuracy management apparatus 100 are communicatively connected to each other through respective communication modules in order to automatically perform the above-described accuracy management operations, and perform a quality management operation through a predetermined operation program . The operational steps of the operating program can be divided into steps 1 to 6 including the preliminary step. In the preliminary step, the operation of connecting the communication ports of the water quality automatic measuring device 101 and the water quality measurement level management device 100 and the operation of injecting the sample such as the standard solution into the tank or the sample container according to the accuracy management range is implemented .

In step 1 shown in FIG. 2, the analysis items to be subjected to the quality management are displayed to the manager, and the manager can receive the selection of the desired quality control analysis item through various input devices. In the second step shown in FIG. 3, the accuracy management execution range setting can be performed. For example, the administrator can select and execute the desired items, such as quantitative limit, accuracy, and precision verification, and perform the zero-drift, span drift, repeatability test, linearity test, response time test, It can also be executed.

In the third step shown in FIG. 4, the reference value of the quality control can be inputted. If the item selected by the administrator is the quantitative limit for copper (Cu), the manager can input the quantitation limit, the calibration curve correlation coefficient, and the measurement time for the selected item. If the items are sequentially executed, And so on. In step 4 shown in FIG. 5, an interface for selecting item-by-item execution of each degree-of-control is provided, and a total result view item may be displayed on the screen for each execution process and at the bottom of the last degree control item. In addition, when an error out of a predetermined error range is calculated by calculating an error with respect to the input condition, the automatic correction may be performed once and then measured again. If such correction is performed, And a message for the performance of the correction is transmitted. In the fifth step shown in FIG. 6, the quality management result can be displayed on the screen. Based on the result of the quality management, it can be implemented to be calculated by the built-in algorithm formula for each item, and the result of the quality control verification result versus the reference value can be displayed as a pass or no NG item.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: Water quality measurement accuracy management device
101: Water quality continuous automatic meter
102: Sampling piping
110: Reference solution tank
111: Fixing piping
112: Reservoir shutoff valve
113: Quantity transfer pump
120:
121: Overflow piping
130: target sample tank
131: Target sample tubing
132: Target sample shutoff valve
133: Target sample transfer pump
140: Controller unit
150: ultrapure water tank
151: Ultrapure water tank
152: Ultrapure water shutoff valve
153: Ultra pure water transfer pump

Claims (7)

1. A water quality measurement quality management device in association with a water quality measurement device to support a quality control operation of the water quality measurement device,
One or more reference stock solution tanks each containing one or more reference stock solutions;
A metering tank which is connected to each of the reference stock tank through pipes and accommodates each reference stock solution transferred from each reference stock tank and is formed to have a predetermined volume;
One side of which is connected to the quantitative tank through a pipe and the other side of which is connected to the water quality measuring device through a pipe; And
The operation of transferring the reference stock solution contained in the reference stock solution tank to the quantifying tank, transferring the reference stock solution received in the quantifying tank to the sample tank, and transferring the reference stock solution contained in the sample tank to the water quality measuring apparatus Controller Unit to Control
Wherein the water quality measurement accuracy management device comprises: The method according to claim 1,
One or more metering tubing pipes connecting the reference stock solution tank and the metering tank respectively;
At least one metering valve interposed in each of the at least one metering tubing conduits;
A control valve provided in each of the one or more metering tubulation pipes corresponding to the metering valve isolation valves to control the opening and shutting of the metering valve and to control each of the reference fluid solutions to be transferred from the reference detoy tank to the metering tank At least one metering hopper pump;
The overflow pipe having one end connected to the metering tank and the other end exposed to the outside to receive a predetermined amount of solution in the metering tank and to discharge the remainder to the outside;
A sample tubulation pipe connecting the quantification tank and the target sample tank;
An object sample vessel shutoff valve installed in the object sample vessel pipe;
An object sample hopper pump installed in the sample sample pipe corresponding to the sample sample cutoff valve to control the opening and closing of the sample sample shutoff valve and to control the sample of the quantitative sample to be transferred to the sample sample tank; And
A sampling pipe for connecting the object sample tank and the water quality measuring device
Wherein the water quality measurement accuracy management device further comprises: 3. The method of claim 2,
Wherein the controller unit includes a first reference stock solution tank connected to the first reference stock solution tank accommodating the first reference stock solution when the first reference stock solution is requested to be supplied from the at least one reference stock solution from the water quality measuring device, And controls the first reference stock solution to be transferred to the fixed solution tank for a predetermined period of time through a first fixed quantity transfer pump provided corresponding to the first constant volume shutoff valve A water quality measurement accuracy management device. The method of claim 3,
Wherein the controller unit controls the target sample vessel isolation valve to maintain the shutoff state while the first reference stock solution is being transferred from the first reference undiluted solution tank to the fixed amount tank, The control unit controls the target sample tank shutoff valve to be switched to an open state when the first reference stock solution is transferred and controls the first reference stock solution to be transferred from the quantitation tank to the target sample tank through the target sample tank transfer pump Wherein the water quality measurement accuracy management device comprises: 3. The method of claim 2,
An ultrapure water tank in which ultrapure water is accommodated;
An ultra pure water pipe connecting the ultrapure water tank and the metering tank;
An ultra pure water shutoff valve installed in the ultra pure water pipe; And
An ultra pure water feed pump installed in the ultra pure water pipe corresponding to the ultra pure water shutoff valve and controlling the opening and shutting of the ultra pure water shutoff valve and controlling the ultra pure water to be transferred from the ultra pure water tank to the constant water tank,
Wherein the water quality measurement accuracy management device further comprises: 6. The method of claim 5,
Wherein the controller unit further comprises a second reference stock solution tank connected to the second reference stock solution tank accommodated in the second reference stock solution when requested to supply a second sample diluted with the second reference stock solution out of the at least one reference stock solution from the water quality measuring device, Wherein the second reference stock solution is supplied to the second reference solution feed pump through the second reference solution feed pump provided corresponding to the second reference solution shutoff valve, And controls the ultrapure water shutoff valve to be switched to an open state so that the ultrapure water is transferred to the constant volume tank through the ultrapure water tank transfer pump. The method according to claim 6,
Wherein when the supply of the second sample having the mixing ratio of the second reference stock solution and the ultrapure water set to 1: N is requested, the controller unit determines that the open state duration of the ultra pure water shutoff valve Is set to be N times the open duration duration of the water quality measurement accuracy management device.
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KR102511944B1 (en) * 2022-01-07 2023-03-20 주식회사 에이치코비 Remote monitoring and calibration system of water quality measuring instrument
KR102607667B1 (en) * 2023-04-10 2023-11-30 주식회사 워터비 Method for measurement of turbidity
KR102615508B1 (en) * 2023-04-10 2023-12-20 주식회사 워터비 System for diagnosis and turbidity

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106771031A (en) * 2016-12-22 2017-05-31 江苏大学 A kind of intelligent feeding equipment based on the monitoring of real-time cultivation water
US20210403343A1 (en) * 2017-07-18 2021-12-30 Ecolab Usa Inc. Recycling automotive phosphate rinse water stream
KR102511944B1 (en) * 2022-01-07 2023-03-20 주식회사 에이치코비 Remote monitoring and calibration system of water quality measuring instrument
KR102607667B1 (en) * 2023-04-10 2023-11-30 주식회사 워터비 Method for measurement of turbidity
KR102615508B1 (en) * 2023-04-10 2023-12-20 주식회사 워터비 System for diagnosis and turbidity

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