Patents Assigned to Hach Lange GmbH
  • Patent number: 10408729
    Abstract: A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a transparent sample cuvette. The nephelometric turbidimeter includes a cuvette chamber housing with a cuvette chamber having the transparent sample cuvette arranged therein, and a drying apparatus. The drying apparatus includes a cuvette chamber inlet opening which vents the cuvette chamber, a cuvette chamber outlet opening which de-vents the cuvette chamber, an air circulator which circulates air from the cuvette chamber outlet opening to the cuvette chamber inlet opening, and a drying body. The drying body is provided as a container of a hygroscopic agent defined by a drying substance which is arranged in a drying path between the cuvette chamber outlet opening and the cuvette chamber inlet opening so that air flows through the drying body.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: September 10, 2019
    Assignee: HACH LANGE GMBH
    Inventors: Manfred Battefeld, Hans-Joachim Kumpch, Axel Leyer, Bas De Heij, Clemens Hanschke, Michael Kueppers, Andreas Jonak, Elk Fricke, Heinz Rudde, Markus Hahn, Markus Lenhard, Rolf Uthemann, Sebastian Minke, Andreas Golitz, Bernd Gassner, Frank Steinhauer, Lothar Heidemanns, Andreas Mitreiter
  • Patent number: 10317383
    Abstract: Methods and arrangements for collecting data related to a water quality sample location. Identifying information of a water quality sample container is electronically obtained, and identifying information of a water quality sample location is electronically obtained. There is placed, in the container, a water sample from the water quality sample location. There is stored the identifying information of the water quality sample container and the identifying information of the water quality sample location; such storing includes associating the identifying information of the water quality sample container and the identifying information of the water quality sample location. Other variants and embodiments are broadly contemplated herein, including methods and arrangements for validating water quality sample data.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: June 11, 2019
    Assignee: HACH LANGE GMBH
    Inventors: Max Schreiber, Johannes Berssen, Sylvia Haustein, Jan Bob
  • Patent number: 10309950
    Abstract: A test element for a mobile water analyzing system includes a sample line and a key reagent disposed in the sample line. The sample line includes an inlet opening arranged at a first end, a pump port arranged at a second end of the sample line, an inlet section arranged between the inlet opening and the pump port, and a measuring section with at least one window arranged at an end of the measuring section. The inlet opening receives a water sample. The measuring section is arranged between the inlet section and the pump port and is coincident with a sample pathway.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 4, 2019
    Assignee: HACH LANGE GMBH
    Inventors: Ulrich Lundgreen, Aria Farjam, Rolf Uthemann, Andreas Mitreiter, Isabel Huenig, Markus Lenhard, Rainer Froemel, Hans-Joachim Kumpch
  • Patent number: 10261009
    Abstract: A basic unit for a mobile water analyzing system includes a photometer comprising a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam, a test element receptacle configured to allow a test element to be inserted therein, and a photometric measuring track arranged between the light source and the light detector. The measurement beam is coincident with the photometric measuring track during a photometric measurement, and not in a cross direction thereto.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: April 16, 2019
    Assignee: HACH LANGE GMBH
    Inventors: Ulrich Lundgreen, Aria Farjam, Rolf Uthemann, Andreas Mitreiter, Isabel Huenig, Markus Lenhard, Rainer Froemel, Hans-Joachim Kumpch
  • Publication number: 20180372607
    Abstract: A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a transparent sample cuvette. The nephelometric turbidimeter includes a cuvette chamber housing with a cuvette chamber having the transparent sample cuvette arranged therein, and a drying apparatus. The drying apparatus includes a cuvette chamber inlet opening which vents the cuvette chamber, a cuvette chamber outlet opening which de-vents the cuvette chamber, an air circulator which circulates air from the cuvette chamber outlet opening to the cuvette chamber inlet opening, and a drying body. The drying body is provided as a container of a hygroscopic agent defined by a drying substance which is arranged in a drying path between the cuvette chamber outlet opening and the cuvette chamber inlet opening so that air flows through the drying body.
    Type: Application
    Filed: November 19, 2015
    Publication date: December 27, 2018
    Applicant: HACH LANGE GMBH
    Inventors: MANFRED BATTEFELD, HANS-JOACHIM KUMPCH, AXEL LEYER, BAS DE HEIJ, CLEMENS HANSCHKE, MICHAEL KUEPPERS, ANDREAS JONAK, ELK FRICKE, HEINZ RUDDE, MARKUS HAHN, MARKUS LENHARD, ROLF UTHEMANN, SEBASTIAN MINKE, ANDREAS GOLITZ, BERND GASSNER, FRANK STEINHAUER, LOTHAR HEIDEMANNS, ANDREAS MITREITER
  • Patent number: 10126236
    Abstract: A method for detecting a contamination of a cuvette of a turbidimeter. The turbidimeter includes a light source which emits a light beam directed to a cuvette, a scattering light detector, and a diffuser with a body and an actuator. The actuator moves the body between a parking position and a test position where the body is between the measurement light source and the cuvette, thereby interferes with the light beam, and generates a diffuse test light entering the cuvette. The method includes activating the actuator to move the body from the parking position into the test position, activating the light source, measuring a test light intensity received by the scattering light detector, comparing the test light intensity measured with a reference light intensity, and generating a contamination signal if a difference between a reference light intensity and the test light intensity measured exceeds a first threshold value.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: November 13, 2018
    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: 10024803
    Abstract: A method for determining an analyte of a liquid sample in a cuvette includes providing a cuvette, a reagent, a barcode, an icon on the cuvette and a liquid analysis device comprising a photometer, a rotation device, a camera, a calibration data memory storing first calibration data, and an input device which manually inputs second calibration data. The cuvette is inserted into the liquid analysis device and is rotated to align the icon with the camera. The icon is read with the camera and the icon read compared with an icon model stored in the liquid analysis device to determine whether it corresponds thereto. The liquid sample is subjected to photometry based on the first calibration data if the icon read corresponds to the icon model. If not, the input apparatus is activated and the liquid sample is subjected to photometry on the basis of the second calibration data.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: July 17, 2018
    Assignee: HACH LANGE GMBH
    Inventors: Markus Lenhard, Manfred Battefeld, Bernd Gassner, Baas De Heij, Clemens Hanschke
  • Publication number: 20180059016
    Abstract: A method for detecting a contamination of a cuvette of a turbidimeter. The turbidimeter includes a light source which emits a light beam directed to a cuvette, a scattering light detector, and a diffuser with a body and an actuator. The actuator moves the body between a parking position and a test position where the body is between the measurement light source and the cuvette, thereby interferes with the light beam, and generates a diffuse test light entering the cuvette. The method includes activating the actuator to move the body from the parking position into the test position, activating the light source, measuring a test light intensity received by the scattering light detector, comparing the test light intensity measured with a reference light intensity, and generating a contamination signal if a difference between a reference light intensity and the test light intensity measured exceeds a first threshold value.
    Type: Application
    Filed: November 8, 2017
    Publication date: March 1, 2018
    Applicant: 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: 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
  • Publication number: 20170176406
    Abstract: A test element for a mobile water analyzing system includes a sample line and a key reagent disposed in the sample line. The sample line includes an inlet opening arranged at a first end, a pump port arranged at a second end of the sample line, an inlet section arranged between the inlet opening and the pump port, and a measuring section with at least one window arranged at an end of the measuring section. The inlet opening receives a water sample. The measuring section is arranged between the inlet section and the pump port and is coincident with a sample pathway.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Applicant: HACH LANGE GMBH
    Inventors: ULRICH LUNDGREEN, ARIA FARJAM, ROLF UTHEMANN, ANDREAS MITREITER, ISABEL HUENIG, MARKUS LENHARD, RAINER FROEMEL, HANS-JOACHIM KUMPCH
  • Patent number: 9638626
    Abstract: A nephelometric turbidimeter vial arrangement includes a vial and a separate vial cap. The vial comprises a transparent cylindrical vial body configured to enclose a vial interior, a bottom inlet window, and a top vial opening configured to be circular. The separate vial cap comprises a light trap cavity. The separate vial cap is configured to close the top vial opening. The light trap cavity comprises an inner surface which comprises a light absorbing surface. The light trap cavity is configured to be open to the vial interior.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 2, 2017
    Assignee: HACH LANGE GMBH
    Inventors: Manfred Battefeld, Bas De Heij, Hans-Joachim Kumpch, Andreas Mitreiter, Andreas Golitz
  • Patent number: 9625435
    Abstract: A basic unit for a mobile water analyzing system includes a photometer, a test element receptacle, a photometric measuring track, and a pump actuator. The photometer comprises a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam. The test element receptacle is configured so as to allow a separate test element comprising a measuring section and a pump port to be inserted into the test element receptacle. The photometric measuring track is defined by the measuring section when the separate test element is inserted into the test element receptacle. The measurement beam and the photometric measuring track are aligned during a photometric measurement so that a photometric measurement occurs along a longitudinal length of each of the photometric measuring track and the measuring section. The pump actuator is cooperatively connected with the pump port.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: April 18, 2017
    Assignee: HACH LANGE GMBH
    Inventors: Ulrich Lundgreen, Aria Farjam, Rolf Uthemann, Andreas Mitreiter, Isabel Huenig, Markus Lenhard, Rainer Froemel, Hans-Joachim Kumpch
  • Patent number: 9546944
    Abstract: A nephelometric process turbidimeter for measuring a turbidity of a liquid sample includes a transparent sample vial which comprises a sample vial lateral inner surface. A vial head comprises a vial head lateral inner surface. The vial head and the sample vial together define a sample volume of a liquid sample having a shape of a cylinder. A sample inlet opening is arranged at the vial head and comprises an inlet opening axis. A sample outlet opening is arranged at the cylindrical vial head lateral inner surface to be axially closer to the sample vial than to the sample outlet opening. The inlet opening axis is inclined with respect to an inlet cross plane with an inclination angle of 10° to 80°, and is angled with respect to a radius line from a middle of the cylinder to the sample inlet opening with a tangency angle of more than 15°.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: January 17, 2017
    Assignee: HACH LANGE GMBH
    Inventors: Bas De Heij, Perry Palumbo
  • Patent number: 9494417
    Abstract: A method for determining a shape correction value F for a laboratory liquid-analysis cuvette comprising a cuvette body with a circular cross-section for a photometric liquid analysis includes optically measuring an inside diameter d1 or an outside diameter d0 of the cuvette body to obtain a measured cuvette body diameter d1;d0. A shape correction value F is calculated from the measured cuvette body diameter d1;d0. The shape correction value F for the cuvette body is stored.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 15, 2016
    Assignee: HACH LANGE GMBH
    Inventor: Frank Stefan
  • Publication number: 20160231240
    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: Application
    Filed: September 30, 2013
    Publication date: August 11, 2016
    Applicant: 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: 9410918
    Abstract: A water analysis sensor electrode for determining an analyte in water includes a sensor electrode housing which is configured to be closed. The sensor electrode housing comprises an inner wall and an ion-selective sensor electrode diaphragm arranged at a lower distal end of the sensor electrode housing. An electrolyte solution is in the sensor electrode housing. A measuring electrode is arranged in the sensor electrode housing. A gas bubble is enclosed by the sensor electrode housing. A rigid rod element having a round cross section is arranged in the sensor electrode housing so that a continuous open capillary channel extends over a length of the sensor electrode housing between the rigid rod element and the inner wall.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: August 9, 2016
    Assignee: HACH LANGE GMBH
    Inventors: Axel Leyer, Lothar Heidemanns, Andreas Jonak, Markus Hahn, Michael Kussmann, Andreas Golitz, Aurelia Stellmach-Hanulok, Claudia Rieger, Heinz Rudde
  • Patent number: 9410882
    Abstract: A turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette includes a cuvette receiving device configured to position the sample cuvette in a defined cuvette position, a light source configured to generate a parallel light beam in the sample cuvette, an annular 45° collecting mirror configured to surround the sample cuvette, a scattering body arranged concentric to the annular 45° collecting mirror, a scattering light detector arranged to receive light scattered by the scattering body, and an annular 45° concentration mirror arranged coaxially to the annular 45° collecting mirror and optically opposite to the annular 45° collecting mirror. The annular 45° collecting mirror is arranged concentric to the light beam. The annular 45° concentration mirror is configured to surround the scattering body.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: August 9, 2016
    Assignee: HACH LANGE GMBH
    Inventors: Barbara Haase, Manfred Battefeld, Andreas Mitreiter, Michael Kussmann, Bas De Heij, Clemens Hanschke, Wayne Perdue
  • Patent number: 9354217
    Abstract: A transport container system for a water analysis sensor cartridge includes a water analysis sensor cartridge configured to be interchangeable. The water analysis sensor cartridge comprises at least two different sensor membranes. A transport container cup comprises, for each of the at least two different sensor membranes, a separate moist chamber. Each separate moist chamber comprises one chamber opening and a specific humectant for each of the at least two different sensor membranes.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: May 31, 2016
    Assignee: HACH LANGE GMBH
    Inventors: Axel Leyer, Lothar Heidemanns, Andreas Jonak, Markus Hahn, Heinz Rudde, Claudia Rieger, Aurelia Stellmach-Hanulok, Andreas Golitz, Michael Kussmann
  • Patent number: 9052302
    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: Grant
    Filed: September 28, 2009
    Date of Patent: June 9, 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: 9052292
    Abstract: A method of determining a concentration of nitrate includes mixing an acid with a first mixture comprising an aldehyde, a chloride and at least one of a nitrate sample and distilled water so as to obtain a second mixture. The second mixture is reacted with a phenol so as to develop a color in a third mixture after a reaction time. The concentration of nitrate is determined colorimetrically with the third mixture.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: June 9, 2015
    Assignee: HACH LANGE GMBH
    Inventor: Heinz Rudde