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Roderick, > The BioMarine CCR155 is electronically controlled. But, the elecrtronics > can crap out completely and you can operate the unit manually. Any > rebreather that is worth purchasing must have that capability. I don't agree with this premise. Perhaps for all of the units that are currently out on the market, this is true, but that reflects improper design of the electronics. From what I've seen of the published details of the units, none of them has sufficient redundancy or a sufficiently redundant design. This is the kind of life critical application that requires algorithm proving, fault-tolerant hardware of the 'committee of three' type of design, as well as redundant gas paths. None of the units that I've seen (and I've probably not seen all of them) has those features. If the electronics are done correctly, they cannot 'crap out completely' - So I think I'm gonna wait for one that is done right. Apologies to any units I've missed which have such features, if you do, I'd be interested in hearing about it! -- /***************************************************************************/ /* William E. Sadler | email: sadler_b@bs*.bs*.bl*.co* */ /* | batchmo@cr*.co* */ /* Divers Down! [\] | CI$: 71005,1241 */ /* | POTS: (404) 332-2314 */ /***************************************************************************/ /* Keep your Honor, be Bold, and remember: */ /* The only things in the middle of the road are yellow stripes and */ /* squished possums. */ /***************************************************************************/
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