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You wrote: >As I understand the mechanism for the Odyssey, there are NO friction >providing parts in the discharge control system. Well, there's a hinge, spring, piston, bellows, and/or weight. IN any case there's friction. Friction means ultimately mechanical failure at some FIT rate. > Furthermore, it is >controlled by gas pressure, and in the VERY unlikely event that this did >fail, the result would be less efficiency of the unit---less bottom time >due to less functional volume---this would NOT effect PO2's. > That's one failure mechanism. Somewhere there's a regulator that can fail. And a gas delivery line that can leak. Couplings, fittings, o-rings, and a lot more fail. I'll bet that if you look real hard, you'll find at least one failure scenario that will affect ppO2. Henry -- //////////////////////////////////////////////////////////// /Henry Davis / New Product Consulting / /Henry Davis Consulting / Specializing in product life / /3 Russell Circle / cycle for high tech products. / /Natick, Ma 01760 / Market Segmentation, Product / /ph:(508)651-9122 fax:651-2032 / Definition, Prototyping, / / hdavis@ix*.ne*.co* / Market Readiness, Introduction / ////////////////////////////////////////////////////////////
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