The led display serves as a means of adjustment and

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ensor is fitted with an internal shield, which is insulated from the housing. The electronic components are encapsulated and a potentiometer is fitted at the output end for the adjustment of sensitivity. Usually, proximity sensors include a light emitting diode (LED), which lights up when the output is switched through. The LED display serves as a means of adjustment and functional testing. © Festo Didactic GmbH & Co. KG • FP 1110 73 6. Optical proximity sensors 6.1.3 Operating margin for optical proximity sensors Optical proximity sensors may be exposed to contamination such as dust, splinters or lubricants during operation. Contamination can cause interference with proximity sensors. Both contamination of the lens forming part of the proximity sensor optics as well as contamination of the reflector with retro-reflective sensors and of the object to be detected in the case of diffuse sensors can cause failure. Heavy contamination in the light beam of through-beam sensors and retro-refle...
View Full Document

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.

Ask a homework question - tutors are online