We monitor conveyor speed, imersion depth, parallelism and preheat.  We do
this with a Wave Solder Optimizer on a daily basis.

>I have been asked by my Quality department to come up with four parameters to
>measure on the wave solder process. This can be put in a program for daily
>recording so that if something changes by a percentage, they can say that we
>need to evaluate the wave solder process. I have come up with two or three
>areas that need to be monitored, but am not sure if these are all critical.
>Does anyone have certain requirements that they track on a daily basis?
>
>Thanks!! (;)>
>
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