Combinations.with.valve.types.and.mounting.versions - Burkert 8692 Operating Instructions Manual

• Electrical.interfaces
Circular plug-in connector or cable gland.
• Housing
The housing of Type 8692/8693 is protected from excessively high internal pressure, e.g. due to leaks, by a
pressure limiting valve.
5.3 Combinations with valve types and mounting
versions
The positioner Type 8692 / process controller Type 8693 can be mounted on different process valves from the
Bürkert range.
Angle seat valves, straight seat valves, control valves, diaphragm or ball valves are suitable (see chapter"5.3.1
Overview of mounting possibilities / features of valve types") .
• For single-acting actuators, only one chamber is aerated and deaerated during actuation. The generated pressure
works against a spring. The piston moves until there is an equilibrium of forces between compressive force and
spring force.
• For double-acting actuators the chambers on both sides of the piston are pressurized. In this case, one chamber
is aerated when the other one is deaerated and vice versa.
There are two different procedures for valve installation.
In "Figure 1" shows two combination possibilities that serve as examples of valve installation in general. The two
procedures are explained in chapter „"12 Installation" based on these examples.
Valve
as an example
of Types 26XX
and 27XX
Figure 1: Mounting versions. Valve types with different installation
14
Positioner Type 8692
Process controller Type
english
or
8693
(Pneumatic)
actuator
Valve body
Type 8692, 8693
Description of System
Valve
as an example
of Types 2103,
2300 and 2301