Kg fp 1110 75 6 optical proximity sensors 1000 600

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Unformatted text preview: ample showing the pattern of the operating reserve factor using a through-beam sensor 1000 600 400 Operating margin factor ß 200 100 60 40 20 10 6 4 2 1 0.1 0.2 0.4 1 2 4 6 10 20 m 100 Distance s Fig. 6.1.4: Example showing the pattern of the operating reserve factor using a retro-reflective sensor © Festo Didactic GmbH & Co. KG • FP 1110 75 6. Optical proximity sensors 1000 600 400 Operating margin factor ß 200 100 60 40 20 10 6 4 2 1 1 2 4 6 10 20 40 100 200 mm 1000 Distance s Fig. 6.1.5: Example showing the pattern of the operating reserve factor using a diffuse sensor The higher the risk of contamination, the higher the required operating margin factor. If the manufacturer specifies operating margin curves, then a specific value can be defined when dimensioning the layout of a proximity sensor application. The anticipated contamination can be estimated considering the transmission factor τ. If one takes τ = 1 for transmission without contamination then τ = 0.1 means that with contamination, only 1/10 of t...
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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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