Smart Positioner
YT-3100
Product Manual
Ver. 1.19
19
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. 3-6: Linear 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.
※
The effective linear feedback lever angle is 60 degree
Stroke : 75 mm
Stroke : 45 mm
Fig. 3-7: Linear feedback lever and location of the connection bar
