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Norman,
Can you or anyone else please explain to me what you actually learn about
decompression by using a computer?
Many thanks,
John.
Hi Ian
The VR 3 http://www.vr3.co.uk/ mixed gas dive computer.
Built for the job - depth rating 150 meters - Multiple gas choice '10' -
switches can be done on the fly any time including changes from CCR to OC
and back again - tracks CNS clock - advises air/back gas breaks - advises
deep stops - user controls when to change gasses and personal safety factor
settings - gives time, date, temp, ascent rate, feet or metric - has a back
light - dive profile downloads to computer - can be used to generate next
dive profiles/dive plans using history of previous dives - completely
upgradeable - built like a nuclear bunker.
Use it on all dives. But still keep slate and D/timer in pocket.
Regards
IP>I think computers in general are a very good thing. Maybe the right
one for tech diving doesn't exist yet, but if it did it would beat working
from tables any day.
I believe computers have their place in no deco stop diving. The
procedure for recovering from a computer failure on a no stop dive is pretty
simple:
1. Go do a safety stop. If you don't have a time reference, use air
pressure as a guide.
2. Get out of the water.
3. Either get yourself straightened out on the tables or stop diving
until you are off the tables.
A computer failure on a deco stop dive isn't nearly that easy in that
vital information about your deco obligation went away with the computer.
Perhaps one day there will be a computer with an independent, redundant
system that can fix this properly. There are other issues as well.
IP>Anyway, I just purchased DecoPlan. I ran the profile of my last dive
(145' for 30 mins on 24% EAN, deco on 50%) and using the default gradient
factor settings it gave about the same total dive time as the Nitek 3, but
with a very different set of stops.
That's one of the other issues. For instance, can you program for Pyle
or WKPP stops? I expect functions like that to hit the diving computers
eventually. Perhaps one that takes a PROM of some sort will come along.
IP>One thing I particularly like about the Nitek is that with the PC
logging program it will calculate my SAC, which for me at this stage is
useful to know across a series of different real dives.
The logging is one of the great functions of the computers. In addition
to being a backup for your own paperwork, it becomes a "black box" for
diving accidents. My Oceanic keeps data on what I have been up to over the
last few dives.
IP> Anyone know if its possible to get it to do this in gauge mode (i.e.
it doesn't know about gas switches, so can these be input later for SAC
calculations)?
Do the people who make your Nitek have a website?
IP>And a question on DecoPlan. The help says that the gas requirement
calculation includes the reserve, but in non-metric mode the reserve
settings in the preferences are ignored. So is the reserve an extra 50%?
IP>Anyone know if the gas management features that are only available in
metric mode are going to be implemented in non-metric at any time in the
near future?
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<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D100435007-12062000>Norman,</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D100435007-12062000>Can=20
you or anyone else please explain to me what you actually learn about=20
decompression by using a computer?</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D100435007-12062000>Many=20
thanks,</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D100435007-12062000>John.</SPAN></FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px">
<DIV><FONT face=3DArial size=3D2>Hi Ian</FONT></DIV>
<DIV><FONT face=3DArial size=3D2> The VR 3 =
http://<A=20
href=3D"http://www.vr3.co.uk/">www.vr3.co.uk/</A> mixed gas dive=20
computer.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Built for the job - depth rating 150 =
meters -=20
Multiple gas choice '10' - switches can be done on the fly any time =
including=20
changes from CCR to OC and back again - tracks CNS clock - advises =
air/back=20
gas breaks - advises deep stops - user controls when to change gasses =
and=20
personal safety factor settings - gives time, date, temp, ascent rate, =
feet or=20
metric - has a back light - dive profile downloads to computer - can =
be used=20
to generate next dive profiles/dive plans using history of previous =
dives -=20
completely upgradeable - built like a nuclear bunker.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Use it on all dives. But still keep =
slate and=20
D/timer in pocket.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Regards</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<P>IP>I think computers in general are a very good thing. Maybe =
the right=20
one for tech diving doesn't exist yet, but if it did it would beat =
working=20
from tables any day.=20
<P>I believe computers have their place in no deco stop =
diving. The=20
procedure for recovering from a computer failure on a no stop dive =
is pretty=20
simple:</P>
<P>1. Go do a safety stop. If you don't have a time reference, =
use air=20
pressure as a guide.</P>
<P>2. Get out of the water.</P>
<P>3. Either get yourself straightened out on the tables or stop =
diving=20
until you are off the tables.</P>
<P> </P>
<P>A computer failure on a deco stop dive isn't nearly that easy in =
that=20
vital information about your deco obligation went away with the=20
computer. Perhaps one day there will be a computer with an=20
independent, redundant system that can fix this properly. =
There are=20
other issues as well.<BR><BR>IP>Anyway, I just purchased =
DecoPlan. I ran=20
the profile of my last dive (145' for 30 mins on 24% EAN, deco on =
50%) and=20
using the default gradient factor settings it gave about the same =
total dive=20
time as the Nitek 3, but with a very different set of stops.<BR></P>
<P>That's one of the other issues. For instance, can you =
program for=20
Pyle or WKPP stops? I expect functions like that to hit the =
diving=20
computers eventually. Perhaps one that takes a PROM of some =
sort will=20
come along.</P>
<P><BR>IP>One thing I particularly like about the Nitek is that =
with the=20
PC logging program it will calculate my SAC, which for me at this =
stage is=20
useful to know across a series of different real dives.</P>
<P>The logging is one of the great functions of the computers. =
In=20
addition to being a backup for your own paperwork, it becomes a =
"black box"=20
for diving accidents. My Oceanic keeps data on what I =
have been=20
up to over the last few dives.</P>
<P>IP> Anyone know if its possible to get it to do this in =
gauge=20
mode (i.e. it doesn't know about gas switches, so can these be input =
later=20
for SAC calculations)?<BR><BR>Do the people who make your Nitek =
have a=20
website?</P>
<P>IP>And a question on DecoPlan. The help says that the gas =
requirement=20
calculation includes the reserve, but in non-metric mode the reserve =
settings in the preferences are ignored. So is the reserve an extra=20
50%?<BR><BR>IP>Anyone know if the gas management features that =
are only=20
available in metric mode are going to be implemented in non-metric =
at any=20
time in the near
future?</P></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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