This is what we do (weigh) at our avionics soldering facility for the LRF
testing.  I suggest that use a designed experiment to qualify the technique
before you set up the process.  What I mean by that is although the method may
not be as accurate as you think you need you might find it adequate to define
your flux application process.

Gordy Seppanen
Military Avionics Materials and Process Engineer
Honeywell Inc.- Minneapolis
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To: [log in to unmask]
From: [log in to unmask] on Wed, Sep 20, 1995 4:17 PM
Subject: Flux Amount

     Does anyone have a good method for measuring the amount 
of flux applied to a board, on a wave solder machine by a 
spray drum fluxer. I'm trying to determine volume of flux 
applied at various drum RPM's. 
     Only method I'm aware of is to weigh a piece of pr-cut 
mylar, apply flux, then weigh again.

     I want to use this to be able to baseline the wave 
solder equipment at the beginning of the shift and whenever 
a new batch of flux is received.  Sounds crazy, but I have 
noticed differences in spray volume at same drum speeds, and 
same air pressure. I'm using a Soltec Sigma wave.

     Any better ideas ?   

                 Thanks in advance
                     Al Boulais
                     (603) 337-1253