Electro-pneumatic Positioners

The Series 6A line of Intelligent Electro-Pneumatic Positioners offer precise flow control and digital communication. For use with either double or single acting pneumatic actuators, the positioners can accept an analog 4-20 mA input or BUS intelligent HART, FOUNDATION Fieldbus™ or PROFIBUS PA input. Both waterproof (NEMA 4, 4X/IP66) and explosion proof (NEMA 4, 4X, 7 and 9) enclosures are offered. A waterproof stainless steel enclosure is available upon request.

Piezo valve technology controls the air supply, producing zero bleed during steady state and minimal consumption during operation. An LCD display provides visual confirmation of valve position in precise one-degree increments. Auto Calibration quickly determines the position of the travel limit stops, then measures and records the parameters for both the open and closed positions. The settings are then stored. Online Adaptive Control continually optimizes control parameters and travel times in response to changes in line pressure.

Bray International, Inc.
www.bray.com

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