Take The Right Path

All-air systems, on the other hand, have their own maintenance advantages. Coast Control's units are impervious to build-up from paper dust, lint, powders, carbon fibers, or other matter, Duffy says, due to the servo controller that allows a positive air stream to discharge from opposing orifices in the sensor. He adds the unit will continue to detect the web's edge when running dark, opaque, transparent, or reflective materials.