Cannot find satisfactory SAMSON actuator.

This message appears when no SAMSON actuator can be found which offers the required actuator force for the specified inlet air pressure. In this case, further calculation is carried out as for a non-SAMSON type (see Calculate actuator).

Note: The possible actuator types for a selected valve and, therefore, diaphragm areas are dependent on the nominal travel of the valve (Valve data part 1).