Meander detection is possible when rewinding mesh sheets.
Installing screen Fiber-Optic Cables NF-TZ07 on each end of the sheet makes it possible to detect any movement to the left or right. With 32 mm width light screen, the NF-TZ07 also ensures stable detection even with mesh objects.

Use two DSR-800 sensors located on both sides of the film.
The sensor is sensitive enough to detect a slight change in the received light.

Screen Fiber-Optic Cables NF-TS40 can be utilized for web alignment control.
It has 40mm width screen beam and in that area the sensor can detect edge of the film. Fiber-Optic Sensors with analog output D2RF-TA can feedback the position of the edge by analog output.