Burkert 8694 - Function Diagram of the Positioner with Single-Acting Actuator

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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).
Pilot valve
system
1
2
Position
controller
Pilot valve system
1: Aeration valve
2: Bleed valve
Pressure
supply
Exhaust air
Position
sensor
Actual
position
external
position
set-point value
Positioner
Pneumatic
actuator
(single-acting)
Valve
(actuator)
Figure 3: Function diagram
english
Type 8694 REV.2