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RE: Anyone used an induction heater to re-activate the getter?

Great information. And has enough convincing data.

I learned how to run a vacuum system, quite similar to the one shown at the link. Later systems had automatic valve sequencing so the rough value and hi-vac value would not be open at the same time.
Most systems also includ a Cold Trap on TOP of the diffusion pump to trap any volitiles going either way. The pumping media of a diffusion pump is a VERY high grade of Silicon Oil. The cold trap is typically full of Liquid Nitrogen which condenses LOTS of bad stuff.
When doing system service, You'd close the hi-vac value and let the system pump. Then 'blow out' the cold trap using nitrogen. That warms it up. And you'd see a huge pressure burst in the foreline as the stuff trapped on the cold trap evaporated and was pumped out. Forelline pressures over 100 microns were common at that point.
The best systems would be to the mid to bottom of the '7 range' while a PERFECTLY clean system which had been baked (internal heaters) THAN having the cold trap filled could JUST bump into the 8 range.
Too much is never enough

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