Hi Graham:

I cannot answer to your question but I want ask you: do you use Nitrigen from cilinder or use membrane for separation of air?
Regards
Zlatko

----- Original Message ----
From: Graham Collins <[log in to unmask]>
To: [log in to unmask]
Sent: Friday, May 19, 2006 9:23:50 AM
Subject: [TN] N2 flow rates


Hello TechNet
I'm looking at buying onsite nitrogen generation capability, and for
our two machines (wave and reflow oven) it looks like I need about 1300
SCFH capacity.  My concern is that our reflow oven is both old, and 4
zone, so it may need to be replaced in the next few years.  (we are
lead-free exempt but may have to make the change at some point in the
next few years - hence I'd want a bigger oven)

Our oven currently uses about 1200 SCFH of nitrogen.  It is, as
mentioned, old - and I assume that oven design has improved so a new
oven will use less nitrogen compared to an old oven of the same size.
As well, I'm guessing that going from a 4 zone to an 8 zone oven does
not mean I should just multiply the nitrogen consumption by 2.

So, after a huge preamble, my question is this: does anyone have a half
decently accurate estimate of what a modern 8 zone oven requires for
nitrogen consumption?

Thanks!




regards,

Graham Collins
Process Engineer,
L-3 Communications Electronic Systems Inc.
Halifax
(902) 873-2000 ext 6215

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