Description
Pulse damper is wide dynamic range device that smoothes pulsations and maintains constant flow at system pressures up to 6000 psi (41 MPa). The damper reduces pulsations by compressing a fluid held within a chamber in the unit. This fluid is isolated from the mobile phase by a durable but flexible inert diaphragm.
As system pressure increases during the pump delivery stroke, fluid in the chamber is compressed. When the pump begins its refill stroke, the compressed fluid expands, keeping the mobile phase flowing at a nearly constant rate and maintaining system pressure.
At its maximum rated pressure of 6000 psi (41 MPa), the volume of mobile phase in the pulse damper is only 0.9 ml. The flow path is designed to ensure it is completely swept so that solvent "memory effects" are virtually non-existent when changing mobile phases.