Download Operating Instructions Type 8694 Positioner TopControl Basic
Transcript
Type 8694 System description 5.4.3 Function diagram of the positioner with single-acting actuator The illustrated function diagram describes the function of the positioner (Type 8694). external position set-point value Positioner Actual position Position controller Control system 1 Position measuring system 2 Control system 1: Aeration valve 2: Bleed valve Pressure supply Exhaust air Pneumatic actuator (single-acting) Valve (actuator)  Figure 3: Function diagram 15 english