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On Sun, 11 Jun 2000 ScottBonis@ao*.co* wrote: > "How does the computer know when to switch to the deco. gasses?" you ask. > Good question. Magic!!! No not really, the computer is an air integrated > unit connected to the back tanks. It keeps track of my breathing rate during > the dive. And when that breathing rate goes to zero, it knows that I am no > longer breathing off of the back tanks so it switches to the first deco. gas > (the EAN 50 in this example). Great. What if your primary gas supply fails, and you're in a gas sharing situation? Or you're diving doubles, and you have to shut down the isolator and you're breathing off the post the computer is not on? Now the computer thinks its time to switch gasses. Ooops. IMO, any dive that calls for switching gasses is more along the lines of a "heavy deco" (your terminology) dive, where planning, including contingencies, is required before entering the water. Diving by computer is contraindicated for such dives. -- Art Greenberg artg@ec*.ne* -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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