Kg fp 1110 12 circuit symbols for proximity sensors

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Unformatted text preview: conjunction with proximity sensors. One cable transmits the light emitted by the light source, while the other cable conducts the light to the receiver of the proximity sensor. Diffuse sensors as well as throughbeam sensors can be realized using optical fibre. In order to increase the relatively short sensing range of diffuse sensors with fibre-optic cables, they may be used in conjunction with reflectors to form a retro-reflective sensor. For sensor applications, fibre optic cables include bundles of individual fibres. The arrangement of the optical fibre in emitter and receiver cables can be done in a wide variety of manners. The chosen arrangement depends on the individual case of application. a) b) c) d) e) f) a) arbitrary c) uniform e) semi-circular b) segmented d) concentric f) in-line Fig. 11.4.11: Schematic design forms of fibre-optic cables (Source: Schott) 198 © Festo Didactic GmbH & Co. KG • FP 1110 12. Circuit symbols for proximity sensors 12.1 Circuit symbols to standard DIN 40900 Circuit symbols Description Proximity sensor Approach-sensitive device, block symbol Note: Method of operation to be specified Example: Approach-sensitive device, capacitive, reacts to approach of a solid object Contact sensor Table 12.1.1: Circuit symbols for sensors to standard DIN40 900, Part 7 Circuit symbols Description Contact-sensitive sensor (normally open contact) Proximity-sensitive sensor (normally open contact) Proximity-sensitive sensor (normally open contact), ac...
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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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