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Terry wrote
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Or maby valves that shut off or
only open at certian depths. Just some ramblings from a newby to tech diving.
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This is not as unfesiable as it seems
I have used pressure flow switchs for hydraulic work in the past, these
are mechanical-electrical transducer and are installed in pipe, so that
when the pressure exceeds a certain limit the pipe opens, There are used as
a safety blow out.
If the switch could be placed in a reg second stage pipe, which in a
poseidon has a pressure of 11 bar greater than ambient, ( someone correct
me if I am wrong), then if you could reverse the switch, and set it to
11.6 bar on an oxygen bottle reg, it surely would only give you oxygen
to the second stage if at 6m or above.
However two problems
1 I don't know if there are switchs to fit in the diametre of a second
stage hose
Any HYdraulic engineers out there will ing to find out??
2 Does the pressuer of a second stage hose decrese as you breath of
it, I don't think that it will but this will depend upon the
preformance of the first stage and its responce time, and the pressure gradient
accross the bottle/first stage/second stage interface
Any body got any answers ???
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_/_/_/ _/_/_/ _/_/_/_/ tow@uk*.ac*.nb*.ua*
_/ _/ _/ _/ _/ _/ PROUDMAN OCEANOGRAPHIC LABORATORY
_/ _/ _/ _/ _/ BIDSTON,MERSEYSIDE
_/ _/_/_/ _/ _/ ENGLAND. L43 7RA
Two roads diverged in a yellow wood, and I,
I take the one less travelled by, and that makes all the difference.
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