Calculate_actuator_Position

Calculate actuator

This menu item from the Item menu in the Main menu starts a calculation or sizing of an actuator for the active item.

During this process, a maximum necessary actuator force is determined on the basis of the maximum and minimum process data and the selected valve. In addition, the maximum authorized actuator force for the material WN 145.71 is determined on the basis of the plug stem diameter and the maximum inlet temperature.

Finally, the program attempts to find an actuator that suits this valve and these requirements.

For non-SAMSON types, the program prompts you to enter a diaphragm area and calculates the required upper range signal pressure value for it. After entering the entire signal pressure range, the necessary air supply and the actuator results are calculated.

For SAMSON types, the program searches for the minimum sufficient SAMSON actuator in the database.

Whether entries are overwritten by the program during calculation depends on the setting of the of the Program override of user-entered values option for the valve and actuator data.

Note: The basic principles of actuator sizing are described in 6. Static Actuator Sizing.