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From: "RMC" <halcyon@ha*.ne*>
To: <RLatulip@ao*.co*>
Cc: "cavers list" <cavers@ge*.co*>,
     "techdiver mail list" ,
     "REBREATHER List"
Subject: Will is a dangerous pretender
Date: Mon, 3 Aug 1998 18:50:24 -0400
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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.=20

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from old outdated literature which are actually recaps of old =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.=20

RMC
=20
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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<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
<HTML>
<HEAD>

<META content=3Dtext/html;charset=3Diso-8859-1 =
http-equiv=3DContent-Type>
<META content=3D'"MSHTML 4.71.2016.0"' name=3DGENERATOR>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT color=3D#000000><FONT
size=3D3>Ray,</FONT></FONT><FONT=20
size=3D3></FONT> </DIV>
<DIV><FONT color=3D#000000><FONT
size=3D3></FONT></FONT><FONT=20
size=3D3></FONT> </DIV>
<DIV><FONT size=3D3>What  Will does not understand or care to is =
that sensor=20
placement as he describes it is not optimum for long dives and is no =
longer=20
considered optimum by those whom have the luxury of long term knowledge =
and=20
exposure to these things. Water vapor will release inside the =
hydrophobic=20
membrane (or any where downstream of the scrubber) that protects the =
sensor from=20
entrained water as soon as a temperature drop occurs (all in good time). =
The=20
temperature he describes (100f) is actually quite low for the exit of a=20
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=20
a dewpoint release of water vapor sraight to the sensor face, inside the =

membrane/sensor housing. </FONT></DIV>
<DIV><FONT size=3D3></FONT> </DIV>
<DIV><FONT size=3D3>Extreme and parrellel sensor variations are possible =
at this=20
point (remember the averaging of the two closest). Several re-packagers =
of so=20
called "new CCR" systems today have simply copied the old =
flawed=20
system, further encouraging folks like Will to assume this is the =
correct=20
placement. He wants to use a device that was designed for a very =
specific task=20
for something entirely different and incompatible (to overcome his lack =
of=20
committment to become physically fit enough to dive on proper =
equipment). The=20
damaging thing is that Will sounds like a true authority on these issues =
when in=20
fact he is wrong on more things than he is right.</FONT></DIV>
<DIV><FONT size=3D3></FONT> </DIV>
<DIV><FONT color=3D#000000><FONT size=3D3>Will, you need to quit
acting =
like you are=20
a pro. You are dangerous with this sort of pretending. Some poor fool =
will think=20
you actually know what you are talking about instead of realizing you =
are just=20
reading from old outdated literature which are actually recaps of old=20
coversations about things that did not work perfectly as you=20
describe.</FONT></FONT></DIV>
<DIV><FONT color=3D#000000><FONT
size=3D3></FONT></FONT><FONT=20
size=3D3></FONT> </DIV>
<DIV>Slow down and look around and LISTEN with your mouth shut for =
awhile, you=20
will learn more, worked for me. </DIV>
<DIV> </DIV>
<DIV>RMC</DIV>
<DIV><FONT size=3D3> </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>Robert M Carmichael<BR>HALCYON / =
Brownie's Third=20
Lung<BR><A =
href=3D"http://www.halcyon.net">http://www.halcyon.net</A><BR><A=20
href=3D"http://www.browniedive.com">http://www.browniedive.com</A><BR><
A =

href=3D"http://www.selfrescue.com">http://www.selfrescue.com</A><BR><A=
20
href=3D"http://www.technicaldiving.com">http://www.technicaldiving.com</A=
></FONT></DIV></BODY></HTML>

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