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Unformatted text preview: nerally block-shaped but also cylindrical designs Protection (IEC 529, DIN 40050) up to IP67 Ambient operating temperature 0 – 60 °C or
-25 – +80 °C Table 6.2.1: Technical data of through-beam sensors 78 © Festo Didactic GmbH & Co. KG • FP 1110 6. Optical proximity sensors Receivers have PNP or NPN transistor outputs and partly additional relay outputs. 4 3 5 1
Emitter (1) Emission range (3) Receiver (2) 2 Reception range (4) Response range (5) Fig. 6.2.2: Response range of through-beam sensors The response range is precisely defined by the size of the optical aperture of the
emitter and the receiver. In this way, precise lateral position sensing is given. Advantages of a throughbeam sensor 6.2.3 Notes on application
• Enhanced reliability because of permanent light during non-operation.
• Wide range.
• Small objects can be detected even at large distances.
• Suitable for aggressive environment.
• Objects can be diffuse reflecting, mirroring or low transluscent.
• Good positioning accuracy. Disadvantages of a through- • Two separate proximity sensor modules (emitter and receiver) and separate
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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.
- Spring '12