Principle Of Operation - Agilent Technologies 1260 Infinity II User Manual

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Introduction
Instrument and Operation

Principle of Operation

The binary pump is based on a two-channel, dual-piston in-series design
which comprises all essential functions that a solvent delivery system has to
fulfill. Metering of solvent and delivery to the high-pressure side are
performed by two pump assemblies which can generate pressure up to
600 bar.
Each channel comprises a pump assembly including pump drive, pump head,
active inlet valve with replaceable cartridge, and outlet valve. The two
channels are fed into a low-volume mixing chamber which is connected via a
restriction capillary coil to a damping unit and a mixer. A pressure sensor
monitors the pump pressure. A purge valve with integrated PTFE frit is fitted
to the pump outlet for convenient priming of the pumping system.
InfinityLab LC Series 1260 Infinity II Binary Pump User Manual 11