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user manual: not typically nitrox

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The fact that a pSCR is typically driven using nitrox is just flat wrong. A
pSCR can be considered as universal gas extender for any depth, so any driving gas.

Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
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Jan Mulder 2017-03-06 10:38:56 +01:00 • committed by Dirk Hohndel
parent 5a8f884390
commit 0398af341d
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Documentation/user-manual.txt
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@ -1954,7 +1954,7 @@ image::images/sidemount1.jpg["FIGURE: Sidemount profile",align="center"]
Passive semi-closed rebreathers (pSCR) are a technical advance in diving equipment that
recirculates the breathing gas a diver uses, while removing carbon dioxide from
the exhaled gas. While a small amount (typically a tenth) of the exhaled breathing gas is released into the water,
a small amount of fresh gas is released from the back gas cylinder (typically containing nitrox).
a small amount of fresh gas is released from the back gas cylinder.
A diver using a single cylinder of breathing gas can therefore dive for much longer periods than
using a recreational open-circuit configuration. With pSCR equipment, a very small amount of breathing
gas is released every time the diver inhales. With active SCR (aSCR) equipment, in contrast, a small amount of