Siemens 147-2000 Positioning Relay Pneumatic

Siemens 147-2000 Positioning Relay Pneumatic,
Description
The 147 Positioning Relay is a compact pneumatic
auxiliary device designe to provide positive positioning
of a pneumatic valve or damper actuator.

Applications
The 147 Positioning Relay accurately positions damper
actuator in response to a control air signal change.
Damper actuators that equippe with a Positioning
Relay can use full control air pressure at any point in
stem travel to initiate stem movement or to maintain
stem position. However, the actuator spring still
provides the necessary force to move the stem in the
opposite direction.
A mounting kit is require for direct attachment of the relay
to a pneumatic damper actuator or valve actuator.