Each reason for flow fluctuation reduction and or pressure pulsation damping needs a greater or lesser level of residual smoothness after damper installation. Each type of flow of mass meter has a level of disturbance above which it becomes inaccurate. The pipes of each system are different, and the level of and rate of pressure change above which shake and fatigue fracture, will be caused is different. The purpose of this page is to allow you to choose a suitable level of residual disturbance that may suit your system, without "over kill". Generally dampers increase in cost by 50% for a doubling in size.
For example a damper for +&- 1% residual, may be 4 times larger than one for +&- 4% residual pulsation. To go from 4% allowable to 1% allowable the damper size will have doubled then doubled again. Probably, the cost of a damper for 1% on a given system will cost 225% more than for 4% residual, and will use 4 times as much space.
Over specifying dampers makes systems softer than necessary; this can introduce control problems, and dead space.