pressure-base factor

pressure-base factor

[′presh·ər ‚bās ‚fak·tər] (chemical engineering) Factor used in orifice pressure-drop calculations to allow for conditions where the pressure base used for calculating the orifice factor is not 14.73 pounds per square inch absolute (101.56 megapascals); calculated as Fpb = 14.73/pressure base (absolute).