4 08 cotton material white 05 08 cardboard black matt

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Unformatted text preview: elow the response threshold of the receiving circuit. • Failure of the emitter is evaluated as "no object present". © Festo Didactic GmbH & Co. KG • FP 1110 87 6. Optical proximity sensors Correction factors to take into account different object surfaces The switching distance must be multiplied by the correction factor. Material Cardboard, white Factor 1) 1.0 Expanded polystyrene, white 1.0 – 1.2 Metal, shiny 1.2 – 2.0 Wood, coarse 0.4 – 0.8 Cotton material, white 0.5 – 0.8 Cardboard, black matt 0.1 Cardboard, black shiny 0.3 PVC, grey 0.4 – 0.8 1) Matt white reverse side of Kodak grey card CAT 152 7795 Table 6.4.2: Correction factors for the switching distance of retro-reflective sensors Background masking with diffuse sensors b 1 a 2 Setting potentiometer (1) Object (2) 3 Background (3) Distance between proximity switch and object (a), Distance between proximity switch and background (b) Fig. 6.4.3: Background fade-out with diffuse sensor 88 © Festo Didactic G...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.

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