Flowserve Valtek Beta Positioners for Control Valves Manuale Utente Scaricare il pdf (Pagina 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)

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