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公开(公告)号：US10724984B2
公开(公告)日：2020-07-28
申请号：US15663732
申请日：2017-07-29
Applicant: Hach Company
Inventor： Seamus O'Mahony , Vishnu Vardhanan Rajasekharan
IPC: G01N27/416 , G01N27/30 , G01N33/18
Abstract: An embodiment provides a method for oxidizing organic carbon, including: introducing, in a reaction chamber of a total organic carbon analyzer, a fluid sample comprising organic carbon, wherein the reaction chamber includes an electrochemical cell and wherein the electrochemical cell comprises an SP3 substituted solid carbon electrode doped with a conductivity elevating composition; applying, using a generator, a positive potential to the SP3 substituted carbon electrode, the positive potential being sufficient to oxidize organics in the fluid sample to produce carbonate and partially oxidized organics; introducing, in the reaction chamber, at least one acid reagent comprising a metallic catalyst, prior to or substantially simultaneously during the application of the positive potential to the SP3 substituted carbon electrode, that converts the carbonate and the partially oxidized species to carbon dioxide; and detecting, using at least one detector, the carbon dioxide produced by the oxidation. Other aspects are described and claimed.
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公开(公告)号：US10718861B2
公开(公告)日：2020-07-21
申请号：US15711591
申请日：2017-09-21
Applicant: Hach Company
Inventor： David L. Rick
IPC: G01S13/58 , G01S13/10 , H04B1/69 , G01S17/32 , G01S13/34 , G01S13/88 , G01F23/284 , G01S7/4913 , G01S7/536 , G01S7/4911 , G01S7/35 , G01S15/32 , G01S17/58 , G01S15/88 , G01S15/58 , G01S17/88 , G01F23/296
Abstract: A method for constructing a frequency profile of an emitted signal suitable for use in a non-contact ranging system with multi-scale spectral analysis includes determining N stepped frequency chirps, wherein each frequency chirp of the N stepped frequency chirps has a linear FM modulation of predetermined bandwidth and slope, and wherein a starting frequency for each of the plurality of stepped frequency chirps is chosen so that a non-linear step profile is created which extends over a predetermined total bandwidth, sorting the plurality of N stepped frequency chirps into P sub-sequences, where P is equal to the product of decimation factors to be used in the multi-scale spectral analysis, and ordering the P sub-sequences end to end in time.
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公开(公告)号：US20200088633A1
公开(公告)日：2020-03-19
申请号：US16690555
申请日：2019-11-21
Applicant: Hach Company
Inventor： Richard Edward Leggett , Wayne Boris Perdue , Andreas Mitreiter
IPC: G01N21/51
Abstract: Various turbidimeters are described that can detect light directly in a substantially circular, e.g., encompassing, manner such that an increased amount of scattered light from a sample vial may be detected by a light detector, e.g., a photodiode or photodiode array. In an embodiment, a substantially circular photodiode array is provided to directly detect scattered light in an arc about the sample vial. In other embodiments, light guides are provided in an arc element that guides light to a detector or detectors. Other aspects are described and claimed.
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公开(公告)号：US20200080982A1
公开(公告)日：2020-03-12
申请号：US16128326
申请日：2018-09-11
Applicant: Hach Company
Inventor： Steven James Boutelle
Abstract: An embodiment provides a method for measuring dissolved oxygen of an aqueous sample, including: introducing an aqueous sample into a measurement device comprising at least two dissolved oxygen sensors, wherein at least one of the at least two dissolved sensors comprises a trend sensor and at least another of the at least two dissolved sensors comprises a reference sensor; measuring a first value of dissolved oxygen using the trend sensor, wherein the trend sensor samples at a trend frequency; measuring a second value of dissolved oxygen from a reference sensor, wherein the reference sensor samples at a reference frequency, the reference frequency being less than the trend frequency; and correcting the first value of dissolved oxygen based upon the second value of dissolved oxygen. Other aspects are described and claimed.
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公开(公告)号：US20190331636A1
公开(公告)日：2019-10-31
申请号：US16310378
申请日：2016-06-16
Applicant: HACH COMPANY
Inventor： Michael Carrabba , Corey Salzer
IPC: G01N27/416 , G01N27/36 , G01N27/403
Abstract: An embodiment provides a probe, including: an ion selective shell that includes a pH electrode bathed in an electrolyte and/or buffer solution; a plurality of conductive electrodes coaxially arranged respective to the pH electrode; the plurality of conductive electrodes being electrically isolated on a substrate displaced between the pH electrode and a reference electrode, and including: at least a first conductive electrode that is exposed to sample fluid at a terminal end of the probe proximate to the ion selective shell and disposed on the surface of an electrode substrate proximate to a terminal end of the reference electrode; and at least a second conductive electrode that is exposed to the sample fluid at the terminal end of the probe proximate to the ion selective shell and disposed on the surface of an el electrode substrate proximate to the terminal end of the reference electrode; the probe further including the reference electrode arranged about and along a longitudinal axis of the probe and bathed in a reference buffer and/or electrolyte solution. Other aspects are described and claimed.
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Patent Agency Ranking
公开(公告)号：US20190219502A1
公开(公告)日：2019-07-18
申请号：US16368503
申请日：2019-03-28
Applicant: Hach Company
Inventor： Richard Edward Leggett , Wayne Boris Perdue , Andreas Mitreiter
IPC: G01N21/51
CPC classification number: G01N21/51 , G01N2021/4726
Abstract: Various turbidimeters are described that can detect light directly in a substantially circular, e.g., encompassing, manner such that an increased amount of scattered light from a sample vial may be detected by a light detector, e.g., a photodiode or photodiode array. In an embodiment, a substantially circular photodiode array is provided to directly detect scattered light in an arc about the sample vial. In other embodiments, light guides are provided in an arc element that guides light to a detector or detectors. Other aspects are described and claimed.
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公开(公告)号：US10215745B2
公开(公告)日：2019-02-26
申请号：US14874024
申请日：2015-10-02
Applicant: Hach Company
Inventor： Jim Duncan , Aria Farjam , Jim Harbridge , Brian Harmon , Ulrich Lundgreen , Darren MacFarland , Leon Moore , Perry Palumbo , William Louis Pherigo, Jr. , Robert Stoughton , Luke Waaler
IPC: A61J1/06 , B01L3/00 , G01N21/00 , G01N33/18 , G01N21/03 , G01N21/25 , G01N21/78 , G01N21/05 , G01N21/59 , G01N31/22
Abstract: An embodiment provides a cuvette, including: a body having a fluid channel therein; and an outer surface having encoded information disposed thereon and readable by a reader of a sample instrument. Other aspects are described and claimed.
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公开(公告)号：US10203231B2
公开(公告)日：2019-02-12
申请号：US14804798
申请日：2015-07-21
Applicant: Hach Company
Inventor： Tom Benson , Dennis Clark , Erik Host-Steen , Scott David Janson , Ken Labar
Abstract: An apparatus can include a controller; memory accessible to the controller; a bus operatively coupled to the controller; sensor circuitry operatively coupled to the bus where the sensor circuitry generates measurement information representative of an environmental condition; and where the controller determines codes, each of the codes representative of an individual operational state of the apparatus, and where the controller associates, in the memory, at least a portion of the measurement information with at least one of the codes.
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公开(公告)号：US20190033249A1
公开(公告)日：2019-01-31
申请号：US15663732
申请日：2017-07-29
Applicant: Hach Company
Inventor： Seamus O'Mahony , Vishnu Vardhanan Rajasekharan
IPC: G01N27/416 , G01N27/30
Abstract: An embodiment provides a method for oxidizing organic carbon, including: introducing, in a reaction chamber of a total organic carbon analyzer, a fluid sample comprising organic carbon, wherein the reaction chamber includes an electrochemical cell and wherein the electrochemical cell comprises an SP3 substituted solid carbon electrode doped with a conductivity elevating composition; applying, using a generator, a positive potential to the SP3 substituted carbon electrode, the positive potential being sufficient to oxidize organics in the fluid sample to produce carbonate and partially oxidized organics; introducing, in the reaction chamber, at least one acid reagent comprising a metallic catalyst, prior to or substantially simultaneously during the application of the positive potential to the SP3 substituted carbon electrode, that converts the carbonate and the partially oxidized species to carbon dioxide; and detecting, using at least one detector, the carbon dioxide produced by the oxidation. Other aspects are described and claimed.
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公开(公告)号：US10006863B2
公开(公告)日：2018-06-26
申请号：US15074278
申请日：2016-03-18
Applicant: Hach Company
Inventor： David T. Crook , Areef A. Moin
CPC classification number: G01N21/645 , G01D3/022 , G01N21/643 , G01N2021/6432 , G01N2201/12723
Abstract: One aspect provides a system, including: a sensor adjustment component having: a memory device having adjustment information stored therein; a light engine capable of producing a signal detectable by a light detector of an optical sensor to be adjusted; and one or more processors; where the one or more processors are configured to execute program instructions to operate the light engine to produce a predetermined light pattern detectable by the light detector of the optical sensor to be adjusted; where the predetermined signal pattern comprises the adjustment information; and where the adjustment information configures said light detector that receives said predetermined signal pattern carrying the adjustment information. Other aspects are disclosed.
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