Control Valve Dynamic Performance Evaluation

Poor control valve performance is the single biggest source of process variability (for details see the background article

A Control Valve Dynamic Performance Evaluation consists of the following:

• Determine which control valves in the selected area will have the biggest impact on the process
• Perform open loop bump tests using high speed, high-resolution data acquisition equipment connected to the field instrumentation I/O
• Analyse the open loop bump test data to determine control valve dynamic non-linearities, such as backlash, stiction, variable deadtime, etc.
• Prepare a report documenting the valve performance and recommending which valves should be repaired or replaced