Description: the total head at the outlet of the installation; Name: installation outlet head
Description: Determined total head at the outlet area of the installation, which corresponds to the sum of geodetic head, pressure head and velocity head ; Name: Total head at outlet area of the installation
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