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On1/24/00 5:11 PM, Deep1dave@ao*.co* wrote: >Concerning the Helium sensor that was on display at DEMA, > >I saw it on display in the Dive-Rite booth. It was a Helium sensor for >testing helium concentration in tanks. They claimed that it used a >differential calculation on the thermal conductivity of air vs. the helium >mixture. They claimed an accuracy of +/- 1%. Sounds interesting. Any >thoughts?? Neat toy -- but superfluous unless it's very cheap. If you're mixing yourself or are present when it's done, you can always calculate the amount of helium in your tanks based on psi if you add the He first or by doing an O2 analysis after you add the oxygen and He but before air topping. The Helium sensor is useful if 1) you want to figure out what's in an unlabeled set of tanks (better off dumping and remixing) or 2) your gas mixer is incompetent. Hmmm...maybe it is a good thing.... Best regards -- Bill -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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