The OnSite system uses a Pressure
Swing Absorption (PSA) technology, using carbon molecular sieve(CMS) as
opposed to membrane technology.

As I understand it, there is an inherent problem with membranes...they are
very, very sensitive and fragile.  Replacement of a membrane is very
expensive...even in existing systems.  The PSA approach is very
stable...with units in the field for over 20 years without problems.

The PSA technology allows Purity levels in a range from 95% up to 99.999%
with a patented Purity Exchange Valve...which allows one unit to generate
three different purities...with the flip of a valve.  We have three unit in
the N. CA region in place inerting Selective Wave Solder machine...all have
been placed since summer of '03.  Many additional units in other industries.

I have a pdf for you to e-mail...or use as you wish.


Scott Lefebvre

-----Original Message-----
From: Matthew Park [mailto:[log in to unmask]]
Sent: Wednesday, March 17, 2004 8:01 PM
Subject: Another Nitrogen Purity Question/Survey

Hi all cryogenic heads,
Several years ago, I looked into a membrane nitrogen generator for the
possibility of supplying inert gas for reflow ovens and wavesoldering
machines.
Are companies using N2 generated by the membrane N2 technology for
reflow/wave? If so, what N2 purity level can be generated?, And how
successful is it for inerting electronic assembly applications?.
Who are major players for supplying membrane nitrogen generators?
thanks
Matthew

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