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To: Lars_Larsson@in*.se*
Subject: Re: Re: rebreather oxygen treatment
From: Carl Heinzl <cgh@ma*.ai*.mi*.ed*>
Cc: techdiver@opal.com
Date: Wed, 15 Feb 95 10:12:50 -0500

>I have one unit (including manual) and it is a 90% closed rebreather using
>standard clinical scrubbers. It is very neatly packed in a small suitcase.
>The Wenoll has a (relatively high) constant mass flow of oxygen and therefore
>it will vent some gas more or less continously and therefore flush the system
>and keep the inert gas fraction reasonably low. I have not yet been able to
>do objective testing of the gas fractions in the system with an inertgas load
>but will do so during the spring.

What you *really* mean is that it is NOT a Fully CCR, it is a SEMI
CCR...

One of the supposedly biggest problems with semi CCRs is that during
heavy exertion, the PPO2 in the breathing loop will be the lowest, and
that is exactly when you need it the most...

-Carl-

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