These intrinsically safe positioners also benefit from low power consumption and can be conveniently configured on-site, or by using HART communication.

A single rotary pushbutton is all that is required for startup: the button is turned to select parameters and pushed to activate them.

This convenient method of operation is still possible in hazardous areas because the shaft design of the rotary pushbutton through the housing is explosion-proof. Also, the design of the enclosure with its separate terminal compartment enables direct cable entry or connection without spark barriers for cable conduit systems.

An easy-to-read liquid crystal display makes relevant data visible at a glance. Depending on the mounting position of the valves, it can also be rotated by 180deg at the push of a button to avoid an upside down display.

Excellent positioning accuracy is achieved thanks to an analogue control, which enables the microprocessor to concentrate on other tasks.

The additional option of fully integrating expert valve diagnostics into the positioner provides all the necessary information for predictive maintenance.