Rockfordmfg
Member
If the environment is dirty but not dusty maybe a vision sensor? Keyence has a new one and Cognex has had one for years.
https://www.keyence.com/products/sensor/vision-sensor/ai/index.jsp
https://www.cognex.com/products/machine-vision/in-sight-2000-vision-sensors
If it is really dusty then a mechanical sealed limit switch with a whisker wire to touch the potatoes - but would need a gap in between each one.
https://www.keyence.com/products/sensor/vision-sensor/ai/index.jsp
https://www.cognex.com/products/machine-vision/in-sight-2000-vision-sensors
If it is really dusty then a mechanical sealed limit switch with a whisker wire to touch the potatoes - but would need a gap in between each one.