Control device for a uv-disinfecting system with broadband uv emitters
AssigneeXylem IP Holdings LLC
InventorsChristian Bokermann, Sven Kämmerer
Life of this patent
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Abstract
A device for monitoring and controlling water disinfecting systems having at least one broadband UV emitter arranged in a channel, wherein the device has at least one sensor, which is arranged in the water at a distance from the broadband UV emitter, and wherein the sensor is connected to a control unit, which is set up to control the output of the broadband UV emitter or the volumetric flow of water through the channel, wherein the sensor has a maximum sensitivity to UV radiation in a wavelength range between 200 nm and 240 nm.
Claims5
A method for monitoring and controlling a water disinfecting system having at least one broadband UV emitter arranged in a channel, wherein at least one first UV sensor is provided, which is arranged in the water at a distance from the broadband UV emitter and wherein the first UV sensor is connected to a control unit, which is configured to control an output of the broadband UV emitter or of a volumetric flow of water through the channel, wherein:
- the first UV sensor has a maximum sensitivity between 200 nm and 240 nm,
- a signal of the first UV sensor is evaluated during operation,
- a UV dose in the wavelength range between 200 nm and 240 nm is calculated based on the signal from the first UV sensor, and
- the UV dose calculated at the site of the first UV sensor is used as a measurement for calculating a disinfection performance of the water disinfecting system.
Dependencies are inferred from the claim text.