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Date: Mon, 14 Jan 2013 08:52:21 -0500
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Subject: Re: [LML] Re: LML roots [O2]
From: Colyn Case <colyncase@earthlink.net>
In-Reply-To: <list-6010350@logan.com>
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Jeff, say more about why you need a "hard" mask?  is that as opposed to =
a "soft" mask?

On Jan 13, 2013, at 5:51 PM, Craig Jimenez wrote:

>> or cannula- should they be worn around your neck and plugged in just =
in
>> case? Flow adjustments-

IVP folks have nice cabin altitudes under normal operation, but in the
Meridians and P-Barons I fly, cabin altitudes tend to be in the =
8-10,000'
range in cruise.  I've been using a Mountain High pulse demand system =
with
cannula to stay a little smarter.  I test it before flight and then set =
it
to provide O2 above cabin alts of 5000'.  A nice benefit is that it will
automatically adjust O2 flow to compensate for cabin altitude, so in the
event of depressurization or failure to pressurize, I have appropriate =
O2
on and flowing.

Note that a mask must be available above 18,000' (it is possible to =
forget
to breath through the nose and I guess there needed to be an easily
remembered cut-off altitude for cannulas).  In my case, the mask is part
of the installed (but small and expensive to refill) system.

Craig


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