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From: "Sean T. Stevenson" <ststev@un*.co*>
To: "James Dibbs" <James.Dibbs@ma*.co*.au*>,
     "Matthias Voss"
Cc: "techdiver@aquanaut.com" <techdiver@aquanaut.com>
Date: Thu, 27 Jul 2000 12:21:53 -0700
Subject: Re: DIR talk vs DIR diving
These regs are designed so as to be more likely to fail the deeper you
go.  Brilliant.

Performance is not an issue with sufficient helium.

-Sean


On Thu, 27 Jul 2000 16:42:39 +0200, Matthias Voss wrote:

>Dacor/ Draeger overcompensation
>
>> "INCREASE INTERMEDIATE PRESSURE WITH DEPTH"
>
>Yes it does, ie IP is not at a constant level above ambient pressure,
>but is increased for eg 0,5 bar for every 10 m of depth.
>Draegers OC regs have the same feature.
>They want rather a constant pressure relation , rather than a certain
>top . They say it should increase performance at depth. Might work well
>with their 2nd stages which are dynamically balanced. They might need
>that, too. ( actually the draegers are simple and robust.
>
>Matthias
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