Optical measurement device

US10627336B2 · kind B2 · utility

Assignee

• HACH LANGE GMBH · DE

Inventors

• Frank Steinhauer · Berlin, DE
• Roman Klein · Berlin, DE
• Robert Dalljo · Berlin, DE

Key dates

• Filing date: Nov 7, 2017
• Grant date: Apr 21, 2020
• Expiry date: Nov 7, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/152
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical measurement device with a transparent cylindrical measurement cuvette, which defines an axial symmetrical axis and contains the fluid sample, an optical measurement arrangement which quantitatively determines the optical property of the fluid sample in the measurement cuvette, and a mechanical cleaning arrangement is described. The cleaning arrangement comprises an external magnetic working platform, which is arranged coaxially to the symmetrical axis, is slidable in a translatory manner parallel to the symmetrical axis, is rotatable about the symmetrical axis, encloses the cylindrical measurement cuvette externally in an annular manner, and has at least one translatory magnet element and at least one rotary magnet element, and an internal magnetic cleaning unit, which is arranged within the measurement cuvette and is slidable in a translatory manner, has a cleaning body, has at least one translatory magnet element, and has at least one rotary magnet element. The translatory magnet elements as well as the rotary magnet elements of the working platform and the cleaning unit are coupled to one another in a contactless and magnetic manner, respectively. Other aspects are de…