john(at)nielsenford.com
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 Posted: Thu Apr 05, 2007 6:47 am Post subject: filling air tanks-testing for O2 |
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You are making too much of the testing for O2. In 9th grade Physics, we
still have the students explore the reactions of oxygen by introducing a
glowing ember from a wood strip to the gas. O2 causes the glowing ember
to ignite into flames. For you smokers, simply place your cancer stick
in front of the hose end, crack the valve open just a smidge, and see if
your ash begins to glow white hot. If so, you are asperating it with
oxygen. There will be no explosion.
John Nielsen
Roger Kemp wrote:
[quote] Forgot one thing. One could also buy a 02 analyzer. The last unit I
priced from Drager was $1500 or you could buy their 5 gas analyzer for
around $5000. That way you'll know if that unknow gas is C02, 02, C0,
He, Ar, or N20. There are a whole sprectrum of analyzer wafers one could
place in this portable system. It even comes with it's own carrying
case, charger, and computer hookup soft/hardware.
Guess you could go to your friendly anesthesiologist and ask him to
stick his 02 analyzer into your bag of unknown gas. If it reads 98-100%
then you probably have pure 02. If you don't then you have something
else. Either way I'm not putting it in my air tank without knowing what
it is.
As for hand propping, without the aircraft chocked,tied securely down,
and the brakes locked if I am doing this by myself I am not even going
to think about it. Without someone sitting in the cockpit that has a
reasonable clue as to what to do agian I am not even considering it.
Others may, but not me. I can get air from a dive shop if my pony tank
leaked down because I have my stage one regulator with me on the road.
We can always ask our friend over at Tallassee that hand propped his 50
when it was out of air. Not a happy camper after it taxied through his
hanger and a couple of other aircraft too! So much for chocks!
Doc
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