Burkert Type 8694 - Manual (Page 15)

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