Excellent environmental resistance and robustness
Azbil’s unique isolating structure separates the electrical/electronic parts, air circuits, and terminal box from each other, achieving high environment resistance. In addition, the improved travel sensor provides better vibration resistance. These features provide what is most important for field equipment: long-term high reliability.
P O I N T 2 Comprehensive control valve diagnosis
With newly added pressure sensors in the positioner, it is possible to measure the supply air pressure, nozzle back pressure, and output air pressure. The control valve diagnostic algorithms, which determines the soundness of the control valve based on the measured values of those pressures, have been enhanced.
The measured pressures are used for both offline commands in which the soundness of the control valve is determined based on its response to commands sent from the host device when the plant is shut down, and online diagnosis, in which the soundness of the control valve is determined based on the information collected during the operation of the plant. This supports the implementation of status-based maintenance and predictive maintenance.
P O I N T 3 Do-from-anywhere adjustment and setup
The new adjustment/setting mechanism (local user interface: LUI) is a combination of an LCD and push buttons mounted on the front of the positioner that allows users to operate the positioner without compromising the explosion-proof construction.
It is also possible to make adjustments and settings from various portable adjustment/setting tools and networked device management systems.
Because users can access the positioner from anywhere, including the worksite, maintenance shop, and control room, adjustment and settings configuration work before operation, and also troubleshooting, can be done more efficiently.