Smart Positioner
YT-2500 / 2550 / 2501 Series
Product manual
Ver. 1.04
21
6. Check if feedback lever is vertical to the valve stem at 50% of the valve stroke. If it is
not vertical, adjust the bracket or the connection bar to make vertical. Improper
installation may cause poor linearity.
Fig. 3-7: Feedback lever and valve stem
7. Check the valve stroke. The stroke numbers are engraved on the feedback lever of the
positioner. Position the connection bar at the number on the feedback lever which
corresponds with the desired valve stroke. To adjust, move the bracket, the connection
bar or both.
Stroke : 30mm
Stroke : 70mm
Fig. 3-8: Feedback lever and location of the connection bar
※
The effective linear lever angle of YT-2500 series is 30 degree.
