Description: difference between the instant value of pressure and the static pressure; Name: pressure of sound
Description: measured dfifference between instantaneous pressure and static pressure; Name: sound pressure
Description: internal volume of a compartment, including the volume of nozzles to the first connection (flange, coupling, screwed connection, weld seam) but excluding the volume of internal structures (e. g. baffles, agitators); Name: Filling volume of the equipment