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On Fri, 9 Apr 1999 Scaleworks@ao*.co* wrote: > Just a bit of anecdotal evidence. > > Watched a 46 get filled with 80% the other night, slow filled in a water > tank. 46 read 73% immediately after mixing, rolled it on the floor for a > couple of minutes, read 80%. Draw your own conclusions. > > Kevin I've seen FO2 readings drift upward in EAN mixes as well (I haven't done any trimix so cannot comment on that). However, all that seems to be necessary is to wait 5-10 minutes after filling for the reading to stabilize, more if the cylinders are warm (i.e., from filling too fast). Rolling around seems like just a way to spend the time while you're waiting. And rolling a set of doubles is kinda difficult. I wonder if the change is due to gas temperature. Does anyone know how the gas temperature affects oxygen sensors? Intuition tells me that higher gas temperature would cause a high FO2 reading, but if the effects described here are to be attributed to gas temperature, the opposite would have to be true. -- 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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