Azbil's SVP7000 Alphaplus Smart Valve Positioner includes diagnostic functions for monitoring control valves for safety operations. The control valve diagnostic capability of the SVP7000 Alphaplus FOUNDATION fieldbus model, with the latest ITK 6.1 certification, ensures safe plant operations by providing early detection of control valve abnormalities, allowing optimal control valve maintenance scheduling. It fully complies with the FOUNDATION technical specifications.
The SVP7000 Alphaplus detects abnormalities in shut-off, actuator spring and gland packing friction by measuring output pressure with a dedicated pressure sensor. It detects the Stick Slip movement of the control valve quantitatively using the Stick Slip diagnostic algorithm. (The Stick Slip is a valve's unstable state caused by excessive friction.)
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