The latest photoelectric sensors from Telemecanique, a brand of Schneider Electric, are suitable for challenging duties such as clear container packaging applications. Features include automatic compensation for lens fouling, which increases uptime and avoids unplanned stoppages. The clever innovation in the XUY type is its ability to monitor its surroundings and increase its gain to compensate for dusty or dirty environments. This continues up to a user defined limit , after which an alarm alerts the operator and maintenance can take place without interruption to the line.
The sensors conform with relevant IEC, UL and CSA standards and are CE marked. They offer up to IP68 protection depending on housing and connection type chosen. Switching frequency is up to 5kHz , depending on the photoelectric type selected. Input is 2,3 or 4 wire ac/dc from 12-230V, while the output is 100/200mA. Connection options include pre-wired, plug-in and rewireable connectors.
Apart from the XUKT for transparent objects, there are four other sensors in the range. The XUK9 polarised light version is for detecting shiny objects; XUKW liquid level detector that uses advanced aqueous optical detection; XUKR contrast mark for wrapping, sealing and quality control applications requiring full colour recognition; and the XUY fork sensors for applications such as bottle top detection, counting screws, label detection and so forth.