Pneumatic proximity sensors 70 l min 60 50 40 30 20

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Unformatted text preview: FP 1110 8. Pneumatic proximity sensors 8.6.2 Characteristic curves of reflex sensors kPa 0.8 0.8 0.7 0.7 0.6 0.6 0.5 0.5 0.4 0.4 0.3 0.3 Signal pressure 1.0 kPa Signal pressure 1.0 0.2 0.1 0.2 0.1 0 0 -0.1 -0.1 -0.2 -0.2 0 1 2 3 4 5 mm 7 -0.3 -0.4 Axial distance -2 -1 0 1 a 2 3 mm 5 a Lateral distance s = 1.5 mm approx 1 mm a Reference edge Supply pressure = 15 kPa (0.15 bar) Fig. 8.6.3: Signal pressure as a function of nozzle distance and supply pressure with a Festo RML-5 reflex sensor © Festo Didactic GmbH & Co. KG • FP 1110 127 8. Pneumatic proximity sensors 70 l / min 60 50 40 30 20 10 0 0 20 40 60 kPa 100 supply pressure Fig. 8.6.4: Air consumption as a function of supply pressure with uninhibited air outlet on a Festo RML-5 reflex sensor 128 © Festo Didactic GmbH & Co. KG • FP 1110 8. Pneumatic proximity sensors 8.6.3 Characteristic curves of air barriers 1.0 pE1 pE3 pE2 kPa 0.5 Signal pressure x 0.1 0.05 Receiver Emitter 2 pE 1 1 s x pR 0.01 0 20 40 60 80 100 120 mm 160 Distance s pR = 10 kPa = const. pE1 = 10 kPa pE2 = 20 kPa pE3 = 50 kPa Fig. 8.6.5: Signal pressure...
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