[chbot] Oxygen / Argon sensor

[Charles Manning]

When you say "free of oxygen", what level do you actually mean?
You will not likely get completely free, but you might get it very low.

Argon will displace the air/oxygen but Brownian motion will cause some
mixing.



On Sun, Jun 7, 2020 at 9:57 PM Mark Atherton <markaren1 at xtra.co.nz> wrote:

> Thanks Graham, Geoff.
>
> On 7/06/2020 9:41 PM, GRAHAM CHRISTIE wrote:
> > Hi Mark
> > I have bottled Argon, regulator etc.
> > I would bubble the argon into the container, expelling air up top.
> > I would test the expelled air in a second higher container with a candle
> at the top.
> >
> > Regards
> > Graham
> > On 07 June 2020 at 20:32 Mark Atherton <markaren1 at xtra.co.nz> wrote:
> >
> >
> > I need to store a thermionic emitter in a jar which is free of oxygen,
> > and just discovered that argon may an acceptable gas.
> >
> > Argon is heavier than air, so it may be as simple as filling a small
> > vertical container with Ar, and placing the emitter at the bottom.
> >
> > I do need some simple instrumentation to tell me how full the container
> > is, so can either be an argon or an oxygen detector.
> >
> > Just wondering if anyone has experience using a car oxygen sensor in the
> > wild, or if there are any other readily available techniques which
> > should be considered (lighted taper would work, but messy).
> >
> > Thoughts please.
> >
> > Mark
>
>
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