Device for optical detection of fouling on light cover panel has regulator that outputs signal if the integral signal from receiver on panel edge has exceeded predefined threshold value

摘要

The device has a receiver (9) on the edge of the cover panel (3) whose signal is fed to a regulator (10) with at least an integral characteristic; the regulator outputs a signal if the integral signal from the receiver has exceeded a predefined threshold value. The spectral operating range of the receiver is within a wavelength range of 15 nm and 100 microns.