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11 stroke characterization – Flowserve 3400IQ Digital Positioner User Manual

Page 118

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Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07

45

94.2

11.86

45

50

94.8

14.15

50

55

95.5

17.54

55

60

96.0

20.93

60

65

96.5

25.94

65

70

97.0

30.95

70

75

97.5

38.36

75

80

98.0

45.77

80

85

98.5

55.66

85

90

99.0

67.68

90

95

99.5

82.31

95

100

100.0

100.0

100

NOTE: Custom characterization points can only be entered with the FB configurator.

Figure 10.3 Logix 3400IQ Digital Positioner Characteristic Curves

10.11 Stroke Characterization

In addition to three pre-defined and embedded characterization curves, the Logix 3400IQ positioner
has a 21-point custom stroke characterization feature. This allows the user to define a unique set of
operating parameters customizable to his process conditions.

0

10

20

30

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70

80

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Linear

Equal Percent

Quick Open

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FINAL_VALUE (% FS)

CMD_USED (% FS)