The lateral length equals diameter of the inscribed

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Unformatted text preview: ng part of a light barrier or of a diffuse sensor. Phototransmitter Light emitting part of a light barrier or a diffuse sensor. Reference axis The axis vertically through the centre of the active surface of a proximity sensor. Reflection Deflection and reflection of light emissions on the boundary surfaces of various media. Reflector Optical aid for reflecting optical emissions, often in the form of triple reflectors. Retro-reflection Directed reflection of light emission to the source of the emission. Retro-reflective sensor The light of an optical emitter is reflected by means of a reflector (retro-reflection). 202 © Festo Didactic GmbH & Co. KG • FP 1110 13. Technical terms relating to proximity sensors Standard test plate A mild steel test plate, of square shape and 1 mm thick used for the purpose of carrying out comparative measurements of the switching distance of inductive sensors. The lateral length equals: • Diameter of the inscribed circle of the active surface. or • three times the value of the nominal switching gap...
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