Description: Design flow rate in the inlet cross-section of the system divided by the inlet cross-section of the system; Name: Average design speed in the plant inlet
Description: Rated flow at the inlet area of the installation divided by the inlet area of the installation; Name: Mean rated velocity at inlet area of the installation
Description: output variable of the controlling element, which is deducted from the control difference variable and is also the input variable of the actuator; Name: controller output variable