kevinstone
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I wouldnt think it's worth the time or money.
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Another thing to consider would be gas absorption/deco models. Far as I know deco models don't worry about Argon as its only 1% in air. Maybe they don't need to worry about it at 4% either but who really knows?
Really would like to resurrect this. I was looking at the Nuva air systems as a way of providing 40% o2 for the new Hollis Explorer. wouldn't this be an issue for them as well? Also as a concern the medical grade o2 we use for blending down her can be as low as 80% I wonder how much argon is in that stuff?
When you mention the Nuvair system are you talking complete with l.p. and h.p. compressors?
The two units below are a complete PSA system to produce 99% O2 @ 2 scfm to 2250 psi. One unit will produce 93%+/- 3% and larger contains a second PSA that removes argon and other trace gases to achieve the higher purity.
View attachment 144551
Don't forget to apply your Partial Pressues formula to the 4% Argon.... I think that Argon is believed to be 2.3 times as narcotic as Nitrogen. Therefore, 4% Argon should not be an issue. But who knows?
Don't forget to apply your Partial Pressues formula to the 4% Argon.
I think the partial pressure matters little since as you are using the bottle deeper you are mixing it. The 4% Argon/96% Oxygen mix, would be considered 100% O2 and not be used below 20' resulting in 6.4% Argon (at 20')
If you are at 70', you will be cutting the mix in half to 2% (i.e. 50% O2), then triple it for the 3 ata and you get 6%
Yeah but if you were using a simi closed Re breather like the explorer the level of argon could increase as you consume O2. Add to that effectively double the amount of argon in the breathing gas and we could have some problems.