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Northern Monkey · 24th November 2006, 10:45

Quote: (Originally Posted by Genesis)

How far off is it?

If you calibrated the back-up handset in air ie 0.21, when the unit was flushed with pure oxygen you would get a PPO2 readout of 1.05

The backup handset didn't seem to track the oxygen with any linearity.

I am curious now to know if most rebreathers with electronic oxygen control only have one reference point for calibration?

We all know that these rebreathers have 3 cells to allow the computer to make comparisons of cell outputs and make judgements. Some rebreather computers track these outputs every time the unit is recalibrated, to warn of forthcoming cell failure.

But do any rebreathers have two calibration references and need both air and oxygen to calibrate?

Any thoughts

24th November 2006, 10:45	#3 (permalink)
Northern Monkey New Member Current Rebreather/s: Inspiration Classic Ouroboros Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: England Posts: 25	Re: O2 Cell linearity Quote: (Originally Posted by Genesis) How far off is it? If you calibrated the back-up handset in air ie 0.21, when the unit was flushed with pure oxygen you would get a PPO2 readout of 1.05 The backup handset didn't seem to track the oxygen with any linearity. I am curious now to know if most rebreathers with electronic oxygen control only have one reference point for calibration? We all know that these rebreathers have 3 cells to allow the computer to make comparisons of cell outputs and make judgements. Some rebreather computers track these outputs every time the unit is recalibrated, to warn of forthcoming cell failure. But do any rebreathers have two calibration references and need both air and oxygen to calibrate? Any thoughts __________________ Death is not an option!
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