Type 8635 is a digital electropneumatic positioner with an optional, integrated process controller for precise control requirements.The compact design with integrated LCD display was developed for demanding applications of the process industry. Main customer benefi ts: • Time saving algorithms for temperature,flow and pressure PID parameters through ProcessTUNE function. • Quick and simple menu driven parameterization through keyboard or Profi bus PA • Remote setpoint adjustment via a 4-20 mA signal • Adaptation according to IEC534-6 for lift and swivel drives • Rugged anodised aluminium housing • Suitable for hazardous locations per zone 1, zone 21 or zone 2 and 22