Scott,
For foam or spray fluxing you can take certain high temperature film
products or papers, weigh them before and after.  Nortel has a patent on a
system to put a certain size of calcium carbonate powder on the board (weigh
before and after) and I think there may also be a patent to do the measuring
using a infrared beam placed in the path of the spray.  I'm sure there are
other ways.

Bev Christian
Research in Motion

-----Original Message-----
From: Rougeux, Scott [mailto:[log in to unmask]]
Sent: April 2, 2001 3:28 PM
To: [log in to unmask]
Subject: [TN] Flux Deposition


Good Afternoon,

I am wondering what approaches are available for measuring the amount of
flux applied to the bottom side of a circuit card using a spray fluxer...or
for that matter any type of flux application method.

Thanks in advance,

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