> Re: Draeger RBs

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Posted by Vic on March 01, 2002 at 18:44:48:

In Reply to: Re: Draeger RBs posted by concerned on February 28, 2002 at 01:28:54:

Oh dear... Someone else who knows everything about rebreathers depite never having dived one...

: just one question ; how do you bail out from co2 there are no symptoms you just go to sleep and die,

You couldn't get much more wrong than that. Excess CO2 gives *many* symptoms (none of which are pleasant, BTW, but none of them involve going to sleep and dying). The training courses teach you how to identify this sort of problem, and how to bail out from out. I would tend to go SCR unless the breakthrough is severe, in which case OC is the only option - but excess CO2 is *completely* preventable by proper filling and accurate tracking of scrubber use.

: tell us how the buddy insperation has 3 sensors and uses a voting system,

The Inspiration has *NO* sensors to measure CO2, saving those fitted to the suction device. It has no need of them.

: it takes the two sensors with the closest readings and disregards the other,

These are oxygen sensors. You do know the difference between CO2 and O2, don't you?

: that is fine if 1 is wrong but what happens when 2 are wrong and 1 is correct,

You will be alerted to the fact that something is wrong with the O2 measurement system. Procedure then calls for a "sanity check", at which point you will discover two faulty sensors and one good one. In this event, the solution is to bail out to manual control and abort the dive - a very simple task indeed.

: what is the death toll for insperations now 18???

14. But don't let facts get in the way of a good scare story.

: what would you like to know about re-breathers??

Absolutely everything. Do you know anything about rebreathers?

: there is one unit on the market that is fail safe and has no batteries

No there isn't. *Nothing* is fail-safe. It cannot possibly be - for every unit there is a pathological failure mode which *will* cause it to fail completely.

: remember in diving what you dont know will kill you

Indeed. You appear to have many hazards ahead.

:two cents worth of a twat diver.

Well, I wouldn't use such language, but if that's how you see yourself, who am I to argue?

Vic.

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: Oh dear... Someone else who knows everything about rebreathers depite never having dived one... : : : just one question ; how do you bail out from co2 there are no symptoms you just go to sleep and die, : You couldn't get much more wrong than that. Excess CO2 gives *many* symptoms (none of which are pleasant, BTW, but none of them involve going to sleep and dying). The training courses teach you how to identify this sort of problem, and how to bail out from out. I would tend to go SCR unless the breakthrough is severe, in which case OC is the only option - but excess CO2 is *completely* preventable by proper filling and accurate tracking of scrubber use. : : tell us how the buddy insperation has 3 sensors and uses a voting system, : The Inspiration has *NO* sensors to measure CO2, saving those fitted to the suction device. It has no need of them. : : it takes the two sensors with the closest readings and disregards the other, : These are oxygen sensors. You do know the difference between CO2 and O2, don't you? : : that is fine if 1 is wrong but what happens when 2 are wrong and 1 is correct, : You will be alerted to the fact that something is wrong with the O2 measurement system. Procedure then calls for a "sanity check", at which point you will discover two faulty sensors and one good one. In this event, the solution is to bail out to manual control and abort the dive - a very simple task indeed. : : what is the death toll for insperations now 18??? : 14. But don't let facts get in the way of a good scare story. : : what would you like to know about re-breathers?? : Absolutely everything. Do you know anything about rebreathers? : : there is one unit on the market that is fail safe and has no batteries : No there isn't. *Nothing* is fail-safe. It cannot possibly be - for every unit there is a pathological failure mode which *will* cause it to fail completely. : : remember in diving what you dont know will kill you : Indeed. You appear to have many hazards ahead. : :two cents worth of a twat diver. : Well, I wouldn't use such language, but if that's how you see yourself, who am I to argue? : Vic.

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