Sensor arrangement for determining turbidity

US10094775B2 · kind B2 · utility

Assignee

• Endress+Hauser Conducta GmbH+Co. KG · DE

Inventors

• Thilo Krätschmer · Gerlingen, DE
• Ralf Bernhard · Stuttgart, DE
• Matthias Grossmann · Lambach, DE
• Benjamin Bertsch · Lichtenstein, DE

Key dates

• Filing date: Dec 8, 2016
• Grant date: Oct 9, 2018
• Expiry date: Dec 8, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/8521
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present disclosure relates to a sensor arrangement for determining the turbidity of a liquid medium. The sensor arrangement includes a sensor section with at least one light source for sending transmission light into a measuring chamber, and at least one receiver associated with the light source for receiving reception light from the measuring chamber, wherein the transmission light is converted into the reception light in the measuring chamber by the medium by means of scattering at a measurement angle, and the reception light received by the receiver is a measure of the turbidity. The reception light is back reflected at a reflection element in contact with the medium, whereby an optical path from the light source through the measuring chamber to the reflection element and from the reflection element through the measuring chamber to the receiver results.