PEAK
Scientific Instruments Ltd
High Purity Nitrogen Generator
Instructions for use Manual
20
th
September 2007
NM20ZL User Guide Issue 2
7
5
Principle of Operation
Peak Scientific Instruments NM20ZL Generators utilize two of air preparation membranes to produce the
required Gas outputs. The Nitrogen side of the generator employs “
Hollow Fibre Membrane”
Technology
to efficiently separate Nitrogen from other gases present in ambient air. An overview of this process can
be seen below.
Air passes into the system through the
Inlet BA Filter
which removes bulk moisture and harmful
particles. The air is now divided into 2 streams. The first stream is passed through the
Nitrogen
Membrane
to generate a flow of
Nitrogen
for the
Curtain Gas
output. The
Nitrogen
is then filtered
through the
RAC Filter
to remove any remaining contaminants. The second stream is passed through
hand operated selector valve this allows air through
2
nd
Nitrogen Membrane
to generate a high flow of
Nitrogen
for the
Source Gas
and
Exhaust Gas
requirements or through the dry point for High flow of
dry air for
Source
and
Exhaust
requirements this is selected by the end user via the selector switch at
the front of the generator. The
Nitrogen / Air
is then filtered through the
RAC
Filter to remove any
remaining contaminants.
