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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