Wave Profiles

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I've seen many folks using IR guns for wave preheat profiles... - Sep 18, 2024 by smt_friend

IR guns do not measure the temperature at the laser dot. The... - Sep 26, 2024 by Stephen

I believe that most of those guns are only calibrated to be ... - Sep 27, 2024 by ProcEng1

smt_friend

#91430

Wave Profiles | 18 September, 2024

I've seen many folks using IR guns for wave preheat profiles. Is this common? Is it less important to use a datalogger like Mole or Kic for wavesoldering?

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Stephen

#91443

Wave Profiles | 26 September, 2024

IR guns do not measure the temperature at the laser dot. They measure the temperature at an ever increasing circle. (a big circle at any distance) I don't think you will get an accurate reading unless you hold the gun a few inches above the board after preheat.

I think wave has a wider process window and defects are more likely to get caught with visual inspection than for SMT.

But using a datalogger is still just as important.

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ProcEng1

#91448

Wave Profiles | yesterday at 03:35 PM

I believe that most of those guns are only calibrated to be accurate when reading a non-reflective black surface. Board to board would mostly be accurate in comparing them, but if you are trying to hit a specific temp, you'll need a piece of dull black tape or something similar.

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