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It would seem to me that if you calibrate the sensor on pressurized air or oxygen (whichever you use), as long as you run it through a flow meter at a constant rate, the pressure of the gas hitting the sensor is going to remain constant, and therefore your reading will be fairly accurate (in terms of problems associated with pressure at the sensor) relative to your calibration. Ben Kevin Connell wrote: > I'd love to know how you intend to build pressure inside a tube where one > end is loosely connected to the scuba valve and the other end, about 2" > away, is completely open! > > Most O2 sensors have a simple tee that without a great deal of flow would > never build any pressure up to affect the reading. > > This is the typical snorkel shop bullshit. Any non-comatose nitrox > instructor will tell you that "yes theoretically it's PPO2s for the sensor, > but in reality it's pretty hard to screw up a reading". > > Thanks for sharing, though. > > At 09:26 PM 11/13/97 +0100, wannabe calypso <calypso@gr*.es* wrote: > > > >ARE YOU REALLY ADVOCATING THIS SHIT? WHY DON'T YOU TELL THEM TO PLAY RUSSIAN > >ROULETTE, IT IS SAFER. IF YOU WANT TO PUT THIS SHIT AND BELIEVE IT, GET RID > >OF THE NICE DISCLAIMER AT THE TOP SAYING THAT IT IS FOR INFO ONLY, GET > >PROPER TRAINING FIRST, ETC. WHY DON'T YOU REMOVE THIS CRAP BEFORE YOU KILL > >SOMEONE!!! > > > >There is a lot more to using an analyser than just connecting it up to this > >flowmeter that you advocate and looking at the reading. Why don't you > >contact someone who knows what they are talking about? > > > >If you really want to put something of use to people who are > >mixing/analysing their own gas, have a look at the article on my page, about > >analysis, and feel free to use it. > > > >http://www.geocities.com/CapeCanaveral/Lab/6045 > > > >Julian Bottomer > > > >-- > >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > > > > -------------------------------------------------------------------------- > Kevin Connell <kevin@nw*.co*> > > Northwest Labor Systems > http://www.nwls.com > Bellingham, WA > --------------------------------------------------------------------------- > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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