Flowserve Valtek Beta Positioners for Control Valves - Manual (Page 12)

24-12 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611
100 90 80 70 60 50 40 30 20 10 0
0 10 20 30 40 50 60 70 80 90 100
90
74
61
39
27
22
19
16
14
11
4
100
90
80
70
60
50
40
30
20
10
0
Percent Signal (Air-to-Close)
Percent Signal (Air-to-Open)
Percent C
v
(Typical)
Degrees Shaft Rotation
100 90 80 70 60 50 40 30 20 10 0
0 10 20 30 40 50 60 70 80 90 100
90
78
67
59
52
41
31
23
17
11
0
100
90
80
70
60
50
40
30
20
10
0
Percent Signal (Air-to-Close)
Percent Signal (Air-to-Open)
Percent C
v
(Typical)
Degrees Shaft Rotation
Figure 15: MaxFlo – Equal Percent Flow Characteristic
(Shaft Rotation vs. Instrument Signal)
Figure 16: MaxFlo – Linear Flow Characteristic
(Shaft Rotation vs. Instrument Signal)