Pneumatic positioners PP981
DESCRIPTION
The ADCATROL PP 981 positioner requires an input signal of 0,2÷1bar (3÷15psi) for proportional control actuator. The positioner compares the output signal from a controller with the position feedback, and varies a pneumatic output signal to the actuator accordingly. The actuator position is therefore guaranteed for any controller output signal and the effects of varying differential pressure
MAIN FEATURES
• Independent adjustment of stroke range and zero.
• Adjustable amplification and damping.
• Split range up to 4-fold possible.
• Supply pressure up to 6 bar (90 psig).
• Low vibration effect in all directions.
• Mounting according to IEC 534, part 6 (NAMUR).
• Rotation adapter for angles up to 120 °.
• Ambient temperature -40 ... 80 °C (-40 ... 176 °F).
• Travel 8 to 100 mm (0.3 to 4 in).
• Angular range 30 ° to 120 °.
• Modular system of additional equipment
- Electrical limit switches
- Electrical position transmitter
- Booster
- Connection manifold
• Protection class IP54 (IP65 on request).
• Certificate No. 90/20226 (E2) Lloyd's Register of
shipping for use on vessels.
• Base device: II 2 G c IIB/IIC T4/T6 according to Atex.
• When with electrical options:
II 2 G EEx ib/ia IIB/IIC T4/T6 according to Atex