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>Posted from deep below on 12 Jun 1996 at 01:23:06 by Richard Pyle >In the context of your model, my earlier >thoughts on color indicators as "true" indicators can be stated as >"perhaps the indicator has a larger k value than the scrubber >absorbency". I was going to post a quick reply expressing general agreement and point out the not only k but also both reactants differ when considering the color indicator. However, the scubber action is a prerequsite for the second reaction to run (it produces one of the reactants in the color indicator reaction) so things get a bit "coupled". I'm not sure it's worth it to spend the time to see how that affects things. >> What do you think of using an array of temperature sensors ? > >I imagine they would have to be calibrated for any given water temp, so >that is probably not a practical solution. From your model, I see that a >CO2 sensor migth be useful if k is small, but it would have to be very >sensative. My speculation is that the output of the array, after subtraction of the water temp would display an approximate profile of the currently most active region of the scrubber. I have no idea how linear it would scale with temp variations. This is one of the tings I attempted to get Barrie excited about seeing as I am years from diving a rebreather myself :-). >I still think volume O2 consumed is the best method when you consider >both practicality and accuracy. Saved to my rebreather file. Regards, John
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