Photoelectric sensors have been designed and developed for use in industry segments such as paper and paperboard machinery, tobacco, machine tools, material handling, packaging machinery, printing machinery and various other specialised applications.
Laser distance sensors can be used to measure the filling levels of a paper roll
Examples of the use of these sensors in the industries include:
* Printing industry – a retro-reflective sensor can be used for non-transparent or transparent objects, as it detects the leading edge of a paper sheet or plastic foil.
* Materials handling industry – the diffuse sensor with background suppression detects parts along a feeding rail, while fork sensors are used to detect boxes with shiny surfaces.
* Textile machinery - the ParCon Sensor controls the correct position of the textile web and can measure the width of a cotton strand.
Photoelectric sensors are capable of detecting targets up to 25 metres and beyond. They are non-contact sensing technology which is ideal for target presence measurement. The fast and precise technology can even be used to distinguish colours.
An example of this would be the Baumer 04 series, one of the smallest sensor families with background suppression. It has real background suppression by triangulation, algorithms for reduced optical interference between sensors and a fixed sensing distance.
These sensors have excellent repeatability over large sensing distances. Laser sensors are available for detection of small objects, high speed detection or high repeat accuracy and to count objects with different colour, surface properties, mirroring and brightness.
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