Description: Variable variable that is not influenced by the regulation or control in question, which is supplied to the control circuit or the control chain from outside and which the task variable is intended to follow in a predetermined relationship; Name: target size
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
Description: Speed that characterizes a pumps cavitation performance in terms of its speed, optimum rate of flow per impeller eye at best efficiency point and NPSH3 at best efficiency point for the first stage at maximum impeller diameter ; Name: Suction-specific speed