The ultrasonic transducer creates oscillations by

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Unformatted text preview: ecting objects cannot be detected reliably at a small distance via the fibre-optic cable. This solution is suitable for the detection of matt, dark (black) objects. Also, it should be noted that compared to operating without a reflector, the switch output (and the LED) of the proximity sensor is inverted compared to operating without a reflector. Exercise 6.10 Checking of bottles The nominal switching distance of an inductive proximity sensor is 8 mm (for steel S 235 JR). For aluminium, the switching distance is reduced to 4 mm. Due to variable height h, an inductive proximity sensor cannot be considered as a solution. The sealing caps can be detected by means of an optical diffuse sensor, whereby the sensitivity of the proximity sensor must be set in such a way that it does not react to the bottle necks. It is an essential requirement that the bottle positions on the conveyor belt always remain within the sensing range of the proximity sensor. © Festo Didactic GmbH & Co. KG • FP 1110 265 16. Solutions 16....
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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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