| http-equiv="Content-Type" content="text/html; | | | | transparent object detection.</p> |
| charset=utf-8"> | | | | <p>All types are available with NPN or PNP |
| <p>The photoelectric sensors exploit the | | | | transistor outputs.</p> |
| photoelectric properties of light. Whenever light | | | | <p><b>Compact Photo electric Sensors< |
| enters the transparent bulb of a photo electric cell, it | | | | b></p> |
| knocks out some electrons from the negatively | | | | |
| charged plate (connected to the negative terminal of | | | | <p>As the name suggests, these sensors are |
| the battery) and is swept across the opposite | | | | compact in size measuring as small as the size of |
| terminals.</p> | | | | your shirt’s button. These sensors, when |
| <p>This flow of electrons constitutes electric | | | | coupled with a high performance circuitry, can detect |
| current through of the order of micro amperes and is | | | | small height differences or detect transparent |
| used to detect light in its applications, aptly termed | | | | objects and also sense subtle differences in |
| as Photo electric Sensors.</p> | | | | colour.</p> |
| <p>There are four sensing types of Photo | | | | |
| electric Sensors namely diffuse reflective, thru-beam, | | | | |
| adjustable range reflective and retro-reflective.< | | | | |
| p> | | | | |
| <p> Diffuse Reflective is for short distances | | | | <p><b><a href=" Sensors</a> |
| of 100 to 800 mm and has a 2mm diametric beam | | | | from Red Lion</b></p> |
| spot.</p> | | | | |
| <p> Thru-beam is available in up to 15m; | | | | <p>When it comes to showcasing versatility, |
| detecting distance models have the longest range.< | | | | the Red Lion Photo electric sensors are frontrunners. |
| p> | | | | Sensors from Red Lion are either DC powered or |
| <p> Adjustable Range Reflective is up to | | | | miniature and both have spectacular functional |
| 300m detecting distance.</p> | | | | properties. |
| <p> Retro-Reflective is specialised model for | | | | |