Flowserve Valtek Beta Positioners for Control Valves Manual do Utilizador descarregar pdf (Página 10)

24-10

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611

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90

74

61

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39

30

23

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12

7

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Percent Signal (Air-to-Close)

Percent Signal (Air-to-Open)

Percent C

v

(Typical)

Degrees Shaft Rotation

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0 10 20 30 40 50 60 70 80 90 100

90

85

79

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65

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48

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Percent Signal (Air-to-Close)

Percent Signal (Air-to-Open)

Percent C

v

(Typical)

Degrees Shaft Rotation

Figure 11: Valdisk – Equal Percent Flow Characteristic

(Shaft Rotation vs. Instrument Signal)

Figure 12: Valdisk – Linear Flow Characteristic

(Shaft Rotation vs. Instrument Signal)

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