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公开(公告)号：JP2013190430A
公开(公告)日：2013-09-26
申请号：JP2013061956
申请日：2013-03-25
Applicant: Hach Company , ハッチ カンパニー
Inventor： KARL KING , JOHN ROBERT WOODWARD , RUSSELL MARTIN YOUNG
IPC: G01N27/403 , G01N27/26 , G01N27/416
CPC classification number: G01N27/403 , G01N27/333
Abstract: PROBLEM TO BE SOLVED: To provide a method for obtaining a proper and accurate reference value for ionic and/or pH measurements because a common source of inaccuracy in the measurements can be an improper or inaccurate reference signal generated from a reference electrode affected by various factors including temperature and/or contaminated electrolyte solutions.SOLUTION: A multiple-electrode ion meter includes: meter electronics configured to receive a plurality of ionic concentration voltage measurements and generate an ionic concentration measurement from the plurality of ionic concentration voltage measurements; and three or more individual electrode units in communication with the meter electronics. The three or more electrode units generate the plurality of ionic concentration voltage measurements to the meter electronics.
Abstract translation: 要解决的问题：提供一种用于获得离子和/或pH测量的适当和精确的参考值的方法，因为测量中的常见的不准确的来源可能是由受各种因素影响的参比电极产生的不正确或不准确的参考信号 包括温度和/或污染的电解质溶液。解决方案：多电极离子计包括：仪表电子器件，被配置为接收多个离子浓度电压测量并从多个离子浓度电压测量产生离子浓度测量; 以及与仪表电子设备连通的三个或更多个单独的电极单元。 三个或更多个电极单元产生对仪表电子设备的多个离子浓度电压测量。
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公开(公告)号：JP2014149309A
公开(公告)日：2014-08-21
申请号：JP2014085566
申请日：2014-04-17
Applicant: Hach Company , ハッチ カンパニー
Inventor： KARL KING , JOHN ROBERT WOODWARD , RUSSELL MARTIN YOUNG
IPC: G01N27/403 , G01N27/26 , G01N27/416
CPC classification number: G01N27/403 , G01N27/333
Abstract: PROBLEM TO BE SOLVED: To provide a combined ion electrode probe capable of cross verification by at least three electrode units.SOLUTION: A combined electrode ion meter comprises: a meter electronic device configured to receive a plurality of ionic concentration voltage measurements from a combined electrode ion probe 106 and generate an ionic concentration measurement from the plurality of ionic concentration voltage measurements; and three or more individual electrode units 108A, 108B, 108C, and 108D communicating with the meter electronic device. The three or more electrode units generate the plurality of ionic concentration voltage measurements to the meter electronic device.
Abstract translation: 要解决的问题：提供能够通过至少三个电极单元交叉验证的组合离子电极探针。解决方案：组合电极离子计包括：仪表电子器件，被配置为从组合电极接收多个离子浓度电压测量值 离子探针106并且从多个离子浓度电压测量产生离子浓度测量; 以及与仪表电子设备通信的三个以上的单独电极单元108A，108B，108C和108D。 三个或更多个电极单元向仪表电子设备产生多个离子浓度电压测量。
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公开(公告)号：WO2022212650A1
公开(公告)日：2022-10-06
申请号：PCT/US2022/022753
申请日：2022-03-31
Applicant: HACH COMPANY
Inventor： RAJASEKHARAN, Vishnu, Vardhanan , JACKSON, Cary, Burton
IPC: G01N31/00 , G01N33/18 , G01N27/27 , G01N27/302 , G01N27/308 , G01N27/44 , G01N31/005 , G01N31/22 , G01N33/182 , G01N33/1846
Abstract: Method and apparatus for deriving an alkalinity measurement, including: introducing a fluid sample; measuring, a phosphate amount of the fluid sample using a colorimetric reagent; measuring a pH of the fluid sample, wherein the pH of the fluid sample correlates to a hydroxide amount of the fluid sample; introducing an acid to convert all the inorganic carbon to carbon dioxide; applying a positive potential to the SP3 substituted carbon electrode; introducing, prior to or substantially simultaneously during the application of the positive potential to the SP3 substituted carbon electrode and in the reaction chamber, at least one acid reagent comprising a metallic catalyst that converts the carbonate and the partially oxidized species to carbon dioxide; determining total organic carbon by detecting an amount of carbon dioxide produced by the oxidation; determining the total organic carbon from the oxidation of the organic carbon species, and determining a derived alkalinity based upon the phosphate amount, the hydroxide amount, and the amount of carbon dioxide generated from the inorganic carbon.
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公开(公告)号：WO2022173941A1
公开(公告)日：2022-08-18
申请号：PCT/US2022/015970
申请日：2022-02-10
Applicant: HACH COMPANY
Inventor： RAJASEKHARAN, Vishnu, Vardhanan , YOUNG, Russell
Abstract: An embodiment provides a method of forecasting water quality deterioration in a water distribution system, including: receiving, at an electronic device, a data set comprising measured values of a plurality of components within the water distribution system; determining, based upon algorithmic analysis of the measured values, a water quality index; and providing, based on the determined water quality index, a recommendation to mitigate water quality deterioration in the water distribution system. Other aspects are described and claimed.
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公开(公告)号：WO2022150183A1
公开(公告)日：2022-07-14
申请号：PCT/US2021/064381
申请日：2021-12-20
Applicant: HACH COMPANY
Inventor： SALZER, Corey Alan
Abstract: An embodiment provides a method for measuring an alkalinity of an aqueous sample, including: introducing an aqueous sample to a voltammetric pH electrode; holding the potential of a voltammetric pH electrode at a pH end point potential; applying a voltage step waveform comprising at least one potential pulse to the voltammetric pH electrode; titrating the aqueous sample; and measuring a current output resulting from the voltage step waveform, wherein the measuring comprises square wave amperometry. Other aspects are described and claimed.
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Patent Agency Ranking6.发明申请
公开(公告)号：WO2022108659A1
公开(公告)日：2022-05-27
申请号：PCT/US2021/051853
申请日：2021-09-24
Applicant: HACH COMPANY
Inventor： GRAY, Matthew
Abstract: A method, system, and computer readable storage medium for determining an optimal amount of coagulant to be added to water for coagulation treatment. The method includes predicting a water quality index that would be achieved for a corresponding nominal coagulant dose by evaluating at least one coagulation-related incoming water parameter of water that has not been treated with coagulant, with a first mathematical model constructed from historical data including (i) previously administered coagulant dosages; and (ii) previously determined values of the water quality index of the water. The method also includes determining whether the predicted water quality index is within a target range. If the predicted quality index is not within the target range, then the coagulant dosage can be adjusted, and the adjusted dosage can be evaluated to predict the water quality index that would be achieved if the adjusted coagulant dosage is administered to the water.
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公开(公告)号：WO2021086866A1
公开(公告)日：2021-05-06
申请号：PCT/US2020/057559
申请日：2020-10-27
Applicant: HACH COMPANY
Inventor： GREENAWALT, Angella, Nicholle
Abstract: An embodiment provides a method for measuring nitrate in an aqueous sample, including: introducing an aqueous sample containing an amount of nitrate to a cation exchange resin; flowing the aqueous sample over copper metal; adding a reducing reagent to the aqueous sample; adding a colorimetric indicator to the aqueous sample; and measuring the amount of nitrate in the aqueous sample by measuring a change in intensity of the absorbance. Other aspects are described and claimed.
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公开(公告)号：WO2021067596A1
公开(公告)日：2021-04-08
申请号：PCT/US2020/053799
申请日：2020-10-01
Applicant: HACH COMPANY
Inventor： DAS, Amit
Abstract: An embodiment provides a method for measuring total chlorine in a seawater sample, including: preparing a thiocarbamate-based indicator; introducing the thiocarbamate-based indicator to a seawater sample, wherein the seawater sample contains an amount of total chlorine; adding an additive to the seawater sample, wherein the additive accelerates the reaction rate between the thiocarbamate-based indicator and total chlorine and causes a change in fluorescence of the seawater sample; and measuring the amount of total chlorine in the seawater sample by measuring an intensity of the fluorescence. Other aspects are described and claimed.
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公开(公告)号：WO2020247720A8
公开(公告)日：2020-12-10
申请号：PCT/US2020/036269
申请日：2020-06-05
Applicant: HACH COMPANY
Inventor： DAS, Amit , MACFARLAND, Darren, Kent , GREENAWALT, Angella, Nicholle , MIERITZ, Daniel, Gustav
IPC: G01N33/18 , G01N31/22 , G01N2021/6439 , G01N2021/6443 , G01N21/643
Abstract: An embodiment provides a method for measuring free chlorine in a solution, including: preparing a thiocarbamate-based indicator; introducing the thiocarbamate-based indicator to a solution, wherein the solution contains an amount of free chlorine and the introducing causes a change in fluorescence of the solution; and measuring the amount of free chlorine in the solution by measuring a change in intensity of the fluorescence. Other aspects are described and claimed.
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公开(公告)号：WO2020097020A2
公开(公告)日：2020-05-14
申请号：PCT/US2019/059781
申请日：2019-11-05
Applicant: HACH COMPANY
Inventor： GREENAWALT, Angella, Nicholle
Abstract: An embodiment provides a method for measuring a concentration of lead(O) in an aqueous sample, including: introducing an aqueous sample to a reaction vessel; adding a copper(II) acetate material to the aqueous sample in the reaction vessel; chelating unreacted copper(II) material by introduction of an organosulfur compound to the aqueous sample in the reaction vessel; adding a colorimetric indicator to the aqueous sample in the reaction vessel; and measuring a concentration of lead(II) in the aqueous sample by measuring a colorimetric change of the aqueous sample caused by a reaction of lead(II) within the aqueous sample with the colorimetric indicator. Other aspects are described and claimed.
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