Patents Assigned to Hach Lange GmbH
  • Patent number: 12188897
    Abstract: An embodiment provides a method for modifying a carbon region on a boron-doped diamond electrode surface, comprising: placing a boron-doped diamond electrode surface in an aqueous solution, wherein the aqueous solution comprises an ionic treatment solution; applying a voltage difference across the boron-doped diamond electrode surface; and modifying a carbon region on an area of the boron-doped diamond electrode surface, wherein the modifying is responsive to application of the voltage while the boron-doped diamond electrode surface is in the aqueous solution, wherein the modification continues until a desired signal of the carbon region is reached. Other aspects are described and claimed.
    Type: Grant
    Filed: May 17, 2023
    Date of Patent: January 7, 2025
    Assignees: Hach Lange GmbH, University of Warwick
    Inventors: Zoë Duncan, Joshua James Tully
  • Patent number: 9851297
    Abstract: A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette. The nephelometric turbidimeter includes a measurement light source configured to emit an axial parallel light beam directed to the sample cuvette, a scattering light detector arranged to receive a scattered light from the sample cuvette, and a diffuser comprising a diffuser body and a diffuser actuator. The diffuser actuator is configured to move the diffuser body between a parking position in which the diffuser body does not interfere with the axial parallel light beam and a test position where the diffuser body is arranged between the measurement light source and the sample cuvette so that the diffuser body interferes with the axial parallel light beam and generates a diffuse test light entering the sample cuvette.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: December 26, 2017
    Assignee: Hach Lange GmbH
    Inventors: Manfred Battefeld, Michael Kussmann, Bas De Heij, Bernd Gassner, Frank Steinhauer, Hans-Joachim Kumpch, Axel Leyer, Michael Kueppers, Andreas Golitz, Andreas Mitreiter, Clemens Hanschke, Lothar Heidemanns
  • Patent number: 9012234
    Abstract: A mobile water analyzing system for determining an analyte in a water sample includes a basic unit and a test element configured to be inserted into the basic unit. The test element includes a sample line with an inlet opening configured to receive the water sample, a measuring section forming a measuring track and configured to allow the determination of an analyte, a pump opening, and a key reagent disposed inside the sample line. The basic unit includes a test element receptacle configured to hold the inserted test element, an analyzer with an analyzer measuring track formed by the measuring section, and a pump actuator cooperatively connected with the pump opening.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 21, 2015
    Assignee: Hach Lange GmbH
    Inventors: Ulrich Lundgreen, Aria Farjam, Rolf Uthemann, Andreas Mitreiter, Isabel Huenig, Markus Lenhard, Rainer Froemel, Hans-Joachim Kumpch
  • Patent number: 8925821
    Abstract: A method for locating an optical identification on a cuvette includes providing a cuvette comprising an axial locating bar with a fixed bar width with a fixed geometric relationship with an identification. A laboratory analyzer is provided comprising a cuvette chamber, a cuvette rotating device, and a digital camera with an axial resolution of more than 10 lines. The digital camera is associated with the cuvette chamber. At least four respective non-adjacent lines of the digital camera are read in. The identification is searched for. If at least three mutually successive read-in lines comprising approximately axially in-line reflection signals of the axial locating bar with the fixed bar width are registered, the cuvette is rotated by an angle corresponding to the fixed geometric relationship so that identification is aligned with the digital camera. The identification is read in by reading out a plurality of adjacent lines of the digital camera.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: January 6, 2015
    Assignee: Hach Lange GmbH
    Inventors: Johannes Berssen, Clemens Hanschke
  • Patent number: 8881580
    Abstract: A process analysis unit includes a base module and an exchangeable cartridge module. The base module comprises at least one independent pump drive, and an analyte sensor without a fluidic measuring section. The cartridge module comprises a liquid reservoir tank, a sample taking device, at least one drive-less pump mechanism configured as a peristaltic membrane pump, a fluidic measuring section for the analyte sensor, and a plastic material plate with groove-like microfluidic channels configured to connect the liquid reservoir tank, the at least one drive-less pump mechanism, and a measuring section. The drive-less pump mechanism is driven pneumatically and pumps a liquid from the liquid reservoir tank. When the cartridge module is connected to the base module, the at least one drive-less pump mechanism is connected to and is driven by the at least one independent pump drive, and the fluidic measuring section is connected to the analyte sensor.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: November 11, 2014
    Assignee: Hach Lange GmbH
    Inventors: Ulrich Lundgreen, Aria Farjam
  • Patent number: 8886472
    Abstract: A method for determining a condition indicator of an apparatus includes providing an apparatus configured to measure at least two different technical parameters. A respective parameter value is determined for each of the at least two different technical parameters of the apparatus using at least one sensor configured to determine a respective parameter value for each of the at least two different technical parameters. A respective deviation value is determined for each of the parameter values with respect to an associated respective parameter reference value for each of the technical parameters. A respective deviation relevance value is determined from each of the deviation values using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other. Using an indicator function, a condition indicator is calculated from the determined deviation relevance values.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: November 11, 2014
    Assignee: Hach Lange GmbH
    Inventors: Toon Streppel, Torsten Seehaus, Ulrich Schmitz, Manfred Battefeld, Frank Thomas, Michael Kussmann, Michael Haeck
  • Patent number: 8685744
    Abstract: A mobile water analyzing system for determining an analyte in a water sample includes a basic unit and a test element configured to be inserted into the basic unit. The test element includes a sample line with an inlet opening configured to receive the water sample, a measuring section forming a measuring track and configured to allow the determination of an analyte, a pump opening, and a key reagent disposed inside the sample line. The basic unit includes a test element receptacle configured to hold the inserted test element, an analyzer with an analyzer measuring track formed by the measuring section, and a pump actuator cooperatively connected with the pump opening.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 1, 2014
    Assignee: Hach Lange GmbH
    Inventors: Ulrich Lundgreen, Aria Farjam, Rolf Uthemann, Andreas Mitreiter, Isabel Huenig, Markus Lenhard, Rainer Froemel, Hans-Joachim Kumpch
  • Publication number: 20130306732
    Abstract: A method for locating an optical identification on a cuvette includes providing a cuvette comprising an axial locating bar with a fixed bar width with a fixed geometric relationship with an identification. A laboratory analyzer is provided comprising a cuvette chamber, a cuvette rotating device, and a digital camera with an axial resolution of more than 10 lines. The digital camera is associated with the cuvette chamber. At least four respective non-adjacent lines of the digital camera are read in. The identification is searched for. If at least three mutually successive read-in lines comprising approximately axially in-line reflection signals of the axial locating bar with the fixed bar width are registered, the cuvette is rotated by an angle corresponding to the fixed geometric relationship so that identification is aligned with the digital camera. The identification is read in by reading out a plurality of adjacent lines of the digital camera.
    Type: Application
    Filed: November 16, 2011
    Publication date: November 21, 2013
    Applicant: Hach Lange GMBH
    Inventors: Johannes Berssen, Clemens Hanschke
  • Patent number: 8510064
    Abstract: A method for determining a condition indicator of a water analysis apparatus includes determining a respective parameter value for each of at least two different technical parameters of the water analysis apparatus. A respective deviation value of each of the parameter values is determined with respect to an associated respective parameter reference value for each of the technical parameters. A respective deviation relevance value from each of the deviation values is determined using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other. Using an indicator function, a condition indicator is calculated from the determined deviation relevance values.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: August 13, 2013
    Assignee: Hach Lange GmbH
    Inventors: Toon Streppel, Torsten Seehaus, Ulrich Schmitz, Manfred Battefeld, Frank Thomas, Michael Kussmann, Michael Haeck
  • Patent number: 8291749
    Abstract: An immersion probe for water analysis includes at least one electrode configured to detect an analyte in water, a probe head with a probe head end side on which the at least one electrode is disposed, and a separate protective cap attached to the probe head so as to be removable in a distal direction. The separate protective cap includes a protective cap end side with an electrode opening and an air discharge nozzle. The air discharge nozzle is configured so as to cause air exiting the air discharge nozzle to sweep over the at least one electrode.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: October 23, 2012
    Assignee: Hach Lange GmbH
    Inventors: Axel Leyer, Lothar Heidemanns, Andreas Jonak, Markus Hahn, Michael Kussmann, Heinz Rudde, Claudia Rieger
  • Publication number: 20120195799
    Abstract: A process analyzer for detection of an analyte in a liquid under analysis includes a base module and an exchangeable cartridge module. The exchangeable cartridge module comprises a sample taking device comprising a membrane configured to obtain a sample from the liquid under analysis. A first pump mechanism is configured to pump the sample away from the sample taking device. A second pump mechanism is configured to introduce a reagent into the sample. A measuring section is configured to perform a quantitative detection of the analyte in the sample. A degassing device is arranged downstream of the first pump mechanism and the second pump mechanism. The degassing device is configured to degas the sample.
    Type: Application
    Filed: April 1, 2010
    Publication date: August 2, 2012
    Applicant: Hach Lange GMBH
    Inventors: Aria Farjam, Rolf Uthemann, Kai Berggold, Ulrich Lundgreen, Bas De Heij
  • Publication number: 20120167673
    Abstract: A water analysis device with a pneumatically actuated multi-chamber peristaltic pump includes a base plate comprising a plurality of proximally open pump chambers disposed on a proximal side of the base plate. A pump membrane disposed on the proximal side of the base plate is configured to close the pump chambers. A cover plate is disposed on the pump membrane comprising a respective pneumatic actuator channel in a region of each of the pump chambers. The pneumatic actuator channel is configured to connect to an overpressure source which actuates the pump membrane. A connection channel formed as a groove on a distal side of the base plate is disposed between two of the pump chambers. A separate groove cover is disposed on the distal side of the base plate in a region of the groove. The separate groove cover closes a distal opening side of the groove.
    Type: Application
    Filed: March 31, 2010
    Publication date: July 5, 2012
    Applicant: Hach Lange GmbH
    Inventors: Aria Farjam, Rolf Uthemann, Kai Berggold, Ulrich Lundgreen, Bas De Heij
  • Patent number: 8197653
    Abstract: Cartridge unit for an electrochemical sensor includes a cartridge (2) prefilled with electrolyte and having a first end closed by a selectively permeable membrane (7), and a second end (6) having a fastening device (11) arranged for fastening the cartridge to the electrochemical sensor (24). The cartridge unit further has a supporting member (3) to which the cartridge (2) is detachably fastened, and closing devices (4, 20) for closing the second end (6) of the cartridge (2). These closing devices (4, 20) are able to be opened by a user to allow the cartridge (2) to be fastened to the electrochemical sensor (24) and then to be detached from the supporting element (3).
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: June 12, 2012
    Assignee: Hach Lange Sarl (Hach Lange GmbH)
    Inventors: Yannick Delessert, Daniel Rosset, Gérard Stehlé, James Hide, Serge Hediger
  • Patent number: 8069706
    Abstract: The invention relates to a waste water immersion probe (10) comprising a liquid-tight housing (11), a sensor (18) which is disposed in the housing (11) and a sensor window (20) formed on the housing (11). A wiper element (22) for cleaning the sensor window (20) is arranged on the outside of the sensor window (20), and the wiper element (22) is driven by a drive motor (24) which is arranged essentially in the housing (11). The housing is devoid of openings. A magnetic element (36, 37) is associated with the drive motor (24) and a magnetic element (34, 35) is associated with the wiper element (22) in such a manner that the magnetic drive motor element (36, 37) produces a magnetic field which transverses the housing wall and transmits a drive torque to the wiper element (22) without a shaft.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: December 6, 2011
    Assignee: Hach Lange GmbH
    Inventors: Manfred Battefeld, Andreas Jonak, Lothar Heidemanns, Axel Leyer, Michael Schuster
  • Publication number: 20110212538
    Abstract: A method for determining an analyte in a water sample with a mobile water analyzing system having a basic unit and a test element insertable in the basic unit, the method comprising providing the test element and the basic unit. The test element is inserted into a test element receptacle of the basic unit. The water sample is transported forward from an inlet opening to a measuring section of the test element. A first analyzing of the water sample is performed in the measuring section with an analyzer of the basic unit. The water sample is transported forward from the measuring section to the first reagent section of the test element. The water sample is transported backward from the first reagent section to the measuring section of the test element. A second analyzing of the water sample is performed in the measuring section with the analyzer of the basic unit.
    Type: Application
    Filed: September 28, 2009
    Publication date: September 1, 2011
    Applicant: Hach Lange GMBH
    Inventors: Ulrich Lundgreen, Aria Farjam, Rolf Uthemann, Andreas Mitreiter, Isabel Huenig, Markus Lenhard, Rainer Froemel, Hans-Joachim Kumpch
  • Patent number: 7967963
    Abstract: A wastewater analysis sensor cartridge (10) according to the invention is intended to be used only once. It has a liquid-tight housing (20), which contains at least one electrochemical sensor element (30, 32) and at least one reference element (56). Furthermore, the housing (20) contains a sensor element electrolyte tank (40,42) and a reference element electrolyte tank (44). The ion-sensitive membranes (31, 33) of the sensor elements (30, 32) and the housing (20) consist of plastic.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: June 28, 2011
    Assignee: Hach Lange GmbH
    Inventors: Rolf Uthemann, Andreas Golitz, John R. Woodward
  • Publication number: 20110023586
    Abstract: An immersion probe for water analysis includes at least two sensors configured to determine different water parameters, a sensor module receiving portion with at least two sensor-module plug-in positions, and at least two sensor modules. The at least two sensor-module plug-in positions are configured to be substantially physically and electrically similar. Each of the at least two sensor modules respectively comprise a sensor and are disposed in a respective sensor-module plug-in position.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 3, 2011
    Applicant: Hach Lange GmbH
    Inventors: Axel Leyer, Lothar Heidemanns, Andreas Jonak, Markus Hahn, Michael Kussmann, Heinz Rudde, Claudia Rieger
  • Patent number: 7854894
    Abstract: Feed devices for liquid samples serve to convey liquid samples, for example to convey a liquid sample from waste water in a waste water treatment plant so as to monitor the treatment process. Known feed devices feed continuously at relatively low speeds. Films may accrete in the feed line that hinder the feeding and may react with the liquid sample. Therefore, the feed line must be cleaned frequently. In view of this, it is the object of the invention to improve the handling and the maintenance of a feed device for liquid samples. According to the invention, this object is solved by the fact that the feed pump (16) feeds in a pulse-like manner and the feed pump (16) as well as the feed line (18) are configured such that the expansion volume of the feed line (18) during the feed pulse is at most 50% of the pulse volume. Thereby, the feed line is cleaned and kept free of accretions.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: December 21, 2010
    Assignee: Hach Lange GmbH
    Inventors: Klaus Bittner, Michael Kussmann
  • Patent number: D659038
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: May 8, 2012
    Assignee: Hach Lange GmbH
    Inventors: Frank Steinhauer, Detlef Liebchen
  • Patent number: D681231
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 30, 2013
    Assignee: Hach Lange GmbH
    Inventors: Frank Steinhauer, Hans-Joachim Kumpch