LIMIT LIMIT DETECTION SYSTEM FOR A VALVE SHUTTER OPERATING IN AN ALL OR NOTHING MODE

摘要

The sensor (5) for the end of travel of a valve obturator (3) has a reference marker (6) fixed to the obturator and a detector (7) fixed to the valve housing. The detector determines the position of the marker with respect to a first target (8) and to a second target (9) corresponding to positions of the valve obturator.