Quote: (Originally Posted by E-man)
He calibrated with 98% O2, saying that it is 100% O2 correct?
So when his loop was 98% O2 at 1 ATA, the controller thinks the loop is at 100% O2. You inspire 98% O2 and the controller thinks you inspired 100% O2, giving you less O2.
Regardless it is most likely an insignificant difference.
1.568 PPO2 would read as 1.6 PPO2
Ah yes that would be true if thats what he did.
I understood from his post that he entered 98% into his handset when he set calibration gas % (I used to enter 99% on my inspiration) but in fact flushed with 100%.
Buy you would be correct of course if he was actually using an O2 source of 98%.
I agree the difference is small but that combined with say a bad flush, changes in atmospheric pressure, etc can all add up.
Cheers
Mike