Description: describes how humans intervene in a control system; Name: mode of operation
Description: characterization of the way and the extent to which the human operator intervenes in the control equipment; Name: operating mode
Description: average speed given by the stroke length multiplied with the number of complete pumping cycles of the piston, plunger or piston attached to the diaphragm per minute (stroke per minute or pump crank speed); Name: piston velocity