Patent ID: 6313468
Filing Date: 2001-11-06
Classification: C02F,G01N

Abstract:
A device for the continuous determination of the UV-transmission of a flowing or running medium, which comprises:a UV-radiation source irradiating a zone of the medium, respective zones of equal irradiation intensity of an emitting surface of the UV-radiation source extending into, or bordering, the medium and a reference space;two UV-sensors directed at the respective zones of equal irradiation intensity, one of the UV-sensors being arranged in the medium and the other UV-sensor being arranged in the reference space;a measuring and evaluating circuit connected to the two UV-sensors for comparing and evaluating signals emitted by the UV-sensors; anda cleaning device associated with the UV-radiation source and the UV-sensor arranged in the medium, the cleaning device comprising a first stripper for the UV-radiation source or a protective tube therefor and a second stripper for the UV-sensor, the first and second strippers being actuated intermittently by a common linear drive.