Introduction To The Micro Vacuum Degasser - Agilent Technologies 1260 Service Manual

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Introduction

Introduction to the Micro Vacuum Degasser

Introduction to the Micro Vacuum Degasser
The Agilent 1260 Infinity micro vacuum degasser, model G1379B,
comprises a 4- channel vacuum container, including 4 micro structured
membranes, and a vacuum pump. When the micro vacuum degasser is
switched on, the control circuit turns on the vacuum pump, which is
operated with constant speed and voltage generates a partial vacuum in
the vacuum container. The pressure is measured by a pressure sensor. The
micro vacuum degasser maintains the partial vacuum with the help of a
controlled leak in the degasser's proportional valve and by varying size of
the controlled leak within the proportional valve, depending on the signal
from the pressure sensor.
The LC pump draws the solvents from their bottles through the special
plastic membranes of the vacuum container. As the solvents pass through
the vacuum chambers any dissolved gas in the solvents permeates through
the membranes into the vacuum container. The solvents will be almost
completely degassed when leaving the outlets of the micro vacuum
degasser.
Figure 1
6
Overview (only one of the four solvent channels is shown)
1260 Infinity Micro Degasser Service Manual