This solution is suitable for the detection of matt

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Unformatted text preview: at the base of the container, resting the container on load cells, microwave filling level sensors, vibration filling level sensors. 264 © Festo Didactic GmbH & Co. KG • FP 1110 16. Solutions Exercise 6.7 Detection of workpieces 1. Yes, however the values specified in the data sheets regarding maximum range must be observed. 2. From above by means of retro-reflective sensors (using fibre-optic cables if space is restricted or if it is difficult to fade out the background). Exercise 6.8 Use of optical proximity sensors in car washes Through-beam sensor Protection class IP 65 is sufficient (protection against penetration of dust and splashing water). Care must be taken that the lenses do not become dirty (blowing with compressed air, installing a dust trap). A minimum of two lines of light barriers is required, which are staggered so that the gantry does not touch the body of the car when moving back and forth. Exercise 6.9 Use of optical proximity sensors with fibre-optic cables This solution works. In this way, the response range can for example be increased from 10 – 60 mm, whereby it should be noted that white or refl...
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