Description: Difference in total energy height between the outlet side and the inlet side of the installation.; Name: Total height energy difference of the plant
Description: difference between the total head at the outlet side of the installation and the total head at the inlet side of the installation; Name: installation total head
Description: variable quantity, which is not influenced by the control but is introduced into the control system from outside with the aim of making the final controlled variable follow it in a given relationship; Name: command variable