Tubular background rejection — what it means on the line
The XUM4ANXBL2 is a tubular background rejection photoelectric sensor from Schneider Electric's Telemecanique range, designed to detect objects against reflective backgrounds without false triggering. Background rejection optics measure the angle of returned light, so the sensor ignores targets beyond a set cutoff distance — useful on conveyors where the belt or a shiny machine frame sits behind the detection zone.