Bürkert unveils new intelligent valve positioner
07 July 2013
The new intelligent Positioner TopControl BASIC, Type 8694 from Bürkert is compatible with hygienic process environment. The compact design is optimised for integrated mounting on the ELEMENT and CLASSIC valves ranges as well as third party process valves.
The stainless steel housing features IP ratings up to IP67 and chemically resistant materials for use in food, beverage and pharmaceutical industries.
Installation of the new valve positioner is simplified by the Process TUNE function and integral DIP switches which are used to set up the close tight function, select characteristic curves, select manual/automatic operation and use binary input to control valve activation.
The indexing of the valve position is performed by a contact-free analogue position sensor, which recognises and saves the valve end position through the Teach function when starting up.
Combined with a remote set-point adjustment feature using either the 4-20mA signal or through the AS-interface as well as manual actuation and high powered coloured status LEDs, the new valve positioner provides all the key features required in a modern process control system.
The new positioner can be combined with actuator sizes ELEMENT 70/90/130, CLASSIC 80-225 or with compact third party process valves. When used in conjunction with the ELEMENT actuators, the novel pilot valve system enables a compressed air recycling that avoids contamination of the actuator chamber from the local environment.
In addition, the pneumatic actuator system reduces overall energy consumption due to the zero intrinsic air consumption figure for when the valve is in steady state.
This new positioner enables complete, uniform control solutions to be implemented, regardless of whether they are hygienic single seat, double seat or butterfly valves or even fittings for auxiliary mediums such as steam, water or cleaning chemicals.
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