Method for determining the UV transmittance of water

US10254221B2 · kind B2 · utility

Assignee

• Xylem IP Management S. à r.l. · LU

Inventors

• Friedhelm Krüger · Lemgo, DE
• Uwe Kanigowski · Velbert, DE

Key dates

• Filing date: Jan 15, 2016
• Grant date: Apr 9, 2019
• Expiry date: Jan 15, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/061
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Method for determining the UV transmittance of water in a UV disinfection plant, through which water flows, wherein the UV disinfection plant has a plurality of radiator arrangements, each with a UV radiation source, a sleeve tube which surrounds the UV radiation source and which has an end face at an open end, and with a UV-C sensor which detects the UV radiation emerging from the sleeve tube without the influence of the water, and with at least one further UV sensor which is arranged at a distance from the sleeve tubes of the radiator arrangements, wherein the method includes the following steps: measuring the UV radiant power emerging from the sleeve tube; measuring an amount of the transmitted radiant power by the further UV sensor; and determining the transmittance of the water by an amount of the emerged radiant power and of the transmitted radiant power.