Extended Online Diagnostic
The following valve and actuator failures can be detected.
• Friction and clogging of a valve.
• Pneumatic leakage (e. g. tear in actuator membrane).
• Growing deposits in a pipeline or tear of valve plug for continuous processes.
• Wear and tear of valve seat or valve plug.
• Deposits or incrustations on valve seat or valve plug.
• Stiction of stuffing box.
• “Partial Stroke Test“ (PST) for open/close valves (e. g. safety valves, ESD) and control valves.