Description: measured dfifference between instantaneous pressure and static pressure; Name: sound press
Description: difference between instantaneous pressure and static pressure; Name: sound pressure
Description: PN (nominal pressure) is an alphanumeric variable for reference purposes, relating to a combination of mechanical and measurement properties of a pipe component. It comprises the letters PN followed by a dimensionless number (according to EN 1333/96.08); Name: Nominal pressure of the muffs, A1