Agilent 1200 Preparative Pump User Manual 9
Introduction to the Preparative Pump
1
Introduction to the Preparative Pump
Hydraulic Path Overview
The pump flow leaving the pump head passes through the multi-assembly,
which combines the flow of the two pistons, filters the solvent and contains a
pressure sensor to monitor system pressure. No hydraulic damper is included
in the system. This makes very fast gradients possible. From the
multi-assembly the flow is routed to the purge valve and from there either
directly into waste or on to the next module (normally injection valve or
sampling device).
Gradients are formed with two combined pumps, as high pressure gradients.
The combined flow, is flowing through a passive mixer, to smooth composition.
With its high pressure mixing principle gradient systems and the usually high
flow rates, no degassing of solvents is necessary.
To avoid outgassing in the detector cell a back pressure regulating device is
recommended for applications that demand it.
Figure 2 Schematics of the Preparative Pump
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