Light curtain sensor with glass fibre optics wide

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Unformatted text preview: le is based on the induced linkage of the sensor coils when a tool is introduced. Diameters from 1 – 25 mm can be monitored. Tools are checked for availability on actuation of the upper or lower sensing level. 1 2 3 4 5 6 Incorporated limit valve (1) Upper sensing point (3) Mounting plate (5) Lower sensing point (2) Sensors (4) Workpiece (6) Fig. 15.1.11: Proximity sensors to monitor drill breakage (Source: Euchner) © Festo Didactic GmbH & Co. KG • FP 1110 239 15. Special designs and variants of proximity sensors 15.2 Variants of optical proximity sensors The following briefly describes a number of variants: • Slot type barrier sensors • Frame sensors • Laser sensors • Retro-reflective sensors with polarisation filter • Printing mark sensors • Luminescence sensors • Angled light barrier sensors • Sensors for accident prevention • Dynamic sensors There are many more variants in addition to the above, for example: • Colour distinguishing sensors • Sensors with integrated contamination signal • Light grid sensor (using several through-beam sensors) • Light curtain sensor with gla...
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