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Date: Mon, 03 Aug 1998 19:51:59 -0400
From: "Katherine V. Irvine" <kirvine@sa*.ne*>
Organization: DIR
To: RMC <halcyon@ha*.ne*>
CC: RLatulip@ao*.co*, cavers list <cavers@ge*.co*>,
     techdiver mail list ,
     REBREATHER List
Subject: Re: Will is a dangerous pretender
Robert - these guys all copied the wrong stuff and then copied each
other . None of them knows what they are doing.


RMC wrote:
> 
> Ray,
> 
> What  Will does not understand or care to is that sensor placement as
> he describes it is not optimum for long dives and is no longer
> considered optimum by those whom have the luxury of long term
> knowledge and exposure to these things. Water vapor will release
> inside the hydrophobic membrane (or any where downstream of the
> scrubber) that protects the sensor from entrained water as soon as a
> temperature drop occurs (all in good time). The temperature he
> describes (100f) is actually quite low for the exit of a scrubber. It
> is more like 110-125 after a 30+ minute crank in reasonable
> environments with most scrubbers. Therefore you get adequate temp drop
> to create a dewpoint release of water vapor sraight to the sensor
> face, inside the membrane/sensor housing.
> 
> Extreme and parrellel sensor variations are possible at this point
> (remember the averaging of the two closest). Several re-packagers of
> so called "new CCR" systems today have simply copied the old flawed
> system, further encouraging folks like Will to assume this is the
> correct placement. He wants to use a device that was designed for a
> very specific task for something entirely different and incompatible
> (to overcome his lack of committment to become physically fit enough
> to dive on proper equipment). The damaging thing is that Will sounds
> like a true authority on these issues when in fact he is wrong on more
> things than he is right.
> 
> Will, you need to quit acting like you are a pro. You are dangerous
> with this sort of pretending. Some poor fool will think you actually
> know what you are talking about instead of realizing you are just
> reading from old outdated literature which are actually recaps of old
> coversations about things that did not work perfectly as you describe.
> 
> Slow down and look around and LISTEN with your mouth shut for awhile,
> you will learn more, worked for me.
> 
> RMC
> 
> Robert M Carmichael
> HALCYON / Brownie's Third Lung
> http://www.halcyon.net
> http://www.browniedive.com
> http://www.selfrescue.com
> http://www.technicaldiving.com


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