Real switching distance the switching distance of an

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Unformatted text preview: ed sensing range of a diffuse optical proximity sensor. Nominal sensing range The switching distance of a proximity sensor at nominal supply voltage and nominal temperature without compensation for production tolerances. sn Radial approach Approach of the calibrating plate at a right angle and in the direction of the reference axis of the active surface of the proximity sensor. 400 mm 350 300 1 2 250 200 3 1 2 150 100 50 a) 15 mm 5 sx 0 5 mm 15 sx Switch-on point (1) b) Switch-off point (2) Hysteresis (3) a) Optical proximity sensor, object approached from side b) Inductive proximity sensor Fig. 13.2.1: Response characteristic 204 © Festo Didactic GmbH & Co. KG • FP 1110 13. Technical terms relating to proximity sensors Range Maximum distance between the emitter and receiver of a through-beam sensor or between the emitting and receiving device and the reflector of a retro-reflective sensor. Real switching distance The switching distance of an inductive proximity sensor measured at nominal voltage and nominal temperature, taking into account manufacturing tolerance. Maximum deviation from the nominal switching distance is ±10 %. Reproducibility Switching point difference which occurs within 8 hrs at a temperature of 15 – 30 °C and a nominal voltage deviation of ±5 %. sn Sensing range Dis...
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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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