Jordan Valve Mark 17X Series Flameproof Smart Positioner - Manual (Page 21)

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*Valve Mode (VALVE)
Acting Adjustments (ACT):
The positioner may be set as Direct Acting (DA), or Reverse Acting (RA).
Characteristic Adjustments (CHAR):
The valve characteristics may be set on the field requirements. There are 3 selectable valve characteristics – Linear
(LIN), Equal Percentage (EQ), and Quick Opening (QO).
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