Equipment for supervising fluorescent lamp installations, comprises light detector sited adjacent to each lamp and connected to analytical blocks which signal light lower than a minimum threshold

摘要

A multiple fluorescent lamp (2) installation as used in the production of photopolymer printing plates is monitored by siting a light detector (3) adjacent to the cathode of each fluorescent lamp. The signals (S1) from the light detectors are sent to analytical blocks (4) connected in cascade which give an alarm signal (Sal) if the light being received is less than a minimum threshold value