You chose the Efficiency of - a PACKED PLUNGER PUMP,
you have the least pressure pulsation - from a variable stroke metering pump
(Excluding "lost motion - limited back stock" machines).

TECH NOTE: (not necessary to read these highlighted areas)
The distance between the end of the plunger stoke, and the cylinder head, plus the volume in the suction and discharge check valve pockets, are together, less than a quarter of the dad volume of a diaphragm head pump, 1/4 the inefficiency of a diaphragm head.
Because of this high efficiency of plunger pumps, the liquid is accelerated progressively, prevents pressure shocks, & provides a smoother flow.

RESULTS
(1) The CORIOLIS (vibrating tube) mass transfer meter gives ACCURATE READINGS. Instead of being over excited at its natural frequency of 90 Hz.
(2) The ratio of dampener inlet hole size to dampener internal diameter is in excess of 1:6. This ratio gives a "discharge coefficient" which in effect KILLS THE PRESSURE PULSE. The residue of the pressure wave is prevented from escaping from the outlet by the even higher "convergence coefficient".
(3) The flow fluctuations are stabilized to LESS THAN A 1% FLOW SWING by the accumulation capability of the Nitrogen volume.
The right size of pipe, small enough to be "dissipative", does as much to stabilize flow fluctuations, and reduce pressure pulsation, & prevent resonance, as is achieved with "dampeners",and smaller pipe costs less.