I'm not an expert on vacuum systems, but the units I see most-commonly for
low vacuums (such as what you would see in a typical engine or vacuum
cleaner) are inches or mm of mercury; higher vacuums are measured in
microns. One Torr (1mm Hg) is 1000 microns. It's a tad silly, because you
cannot
> supposedly can get down to 35 microns
Is there a particular technical reason to not use the torr unit of
measurement when discussing vacuum? Just curious if it's just personal
choice or if there's a technical principal at play.
> My plan is to do some heating/baking while the system is fully
I bought an A/C evacuation pump from Harbor Freight Tools that supposedly
can get down to 35 microns; I dont have any equipment to measure anywhere
near that low. It was a relatively inexpensive pump, around 80 USD. I think
it's sufficient to do some experimenting. My plan is to do some
Ah, got it. So first the evacuation must take be done under much lower
pressures, before filling the tube back in with the neon argon mixture.
That makes sense.
So on the subject of the first question. What sort of pump would I have to
be looking at? I assume High Vacuum pump is the category
Ok, that makes more sense. So in that case High Vacuum is required to
evacuate then.
What sort of pump would I need to be looking for to achieve that?
On Thursday, September 14, 2023 at 5:41:36 PM UTC-4 gregebert wrote:
> OK, that's once the tube is pressurized with the desired gas. However,
>From what I've researched, getters target oxygen, but I'm certain there are
other rogue agents lurking out there to ruin your neon work.
On Thursday, September 14, 2023 at 2:47:03 PM UTC-7 Nicholas Stock wrote:
> That is also the purpose of using a getter too right? Remove the majority
> of
That is also the purpose of using a getter too right? Remove the majority
of the gaseous impurities before back filling with neon/penning gas mixture?
On Thu, Sep 14, 2023 at 2:41 PM gregebert wrote:
> OK, that's once the tube is pressurized with the desired gas. However, to
> cleanse the tube
OK, that's once the tube is pressurized with the desired gas. However, to
cleanse the tube of impurities, it must be baked-out and evacuated to a
rather high vacuum. Even at a high vacuum of 1 micron, there are still an
extraordinary number of gas molecules present, on the order of 10^16 per
Microns what? Liquid hydrogen, liquid water liquid Wolfram or liquid mercury?
eric
Van: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] Namens
gregebert
Verzonden: donderdag 14 september 2023 17:44
Aan: neonixie-l
Onderwerp: [neonixie-l] Re: Vacuum pumps for evacuating
I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 Torr.
One atmosphere of pressure is 760 Torr (760mm Hg).
I've seen neon-sign texts stating the need to get below 1 micron for proper
bombarding, and I imagine nixie tubes are similar.
On Thursday, September 14, 2023 at
Look at Dalibor's videos.
On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com wrote:
> Good day.
>
> Since we require to reach vacuums of 10 - 50 torr depending on the gas
> mixture. What sort of vacuum pumps are we looking at sourcing to achieve
> those levels?
>
--
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