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Checklist for Best Control Valve Performance
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Gregory K McMillan
3 May 2012
control valves
Threshold Sensitivity
Limit Cycles
resolution
positioner
backlash
deadband
Precision
Stiction
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Checklist for Best Control Valve Performance
The threshold sensitivity and resolution of measurements (smallest incremental change) has improved dramatically to better than 0.05% with new sensor technology and smart compensation of extraneous effects of operating conditions. The response of the air actuated control valve has improved but the smallest incremental change in position varies widely depending upon the actuator, positioner, valve type, and valve heritage.
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