7
System description
5
SYSTEM DESCRIPTION
5.1
Structure and function
Positioner
Actuator
Valve body
Process valve
Fig. 1: Structure 1
Positioner Type 8696 is an electropneumatic position controller for
pneumatically actuated control valves with single-acting actuators.
Together with the pneumatic actuator, the positioner forms a func-
tional unit.
The control valve systems can be used for a wide range of control
tasks in fluid technology and, depending on the application condi-
tions, different process valves from the Bürkert range can be com-
bined with the positioner. Angle seat valves, straight seat valves or
diaphragm valves of the Type 2300, 2301 or 2103 with an actuator
size of 50 mm are suitable.
Communications
interface
Button 2
Button 1
Pilot air port (label: 1)
Exhaust air port (label: 3)
Electrical connection
(circular plug-in connector)
LEDs
Transparent cap removed:
Pressure limiting valve
(for protection against too
high internal pressure in
case of error)
Basic housing
Fig. 2: Structure 2
The position of the actuator is regulated according to the position
set-point value. The nominal position value is specified by an
external standard signal.
english
Type 8696 REV.2
Summary of Contents for 8696 REV.2
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