(04-25-2016, 01:56 PM)FrankNichols Wrote: Now I want to see if I can do the same with the P10. It has been idling at 10, which is explained by the setting being wrong!
I'm afraid that doesn't explain anything.
some people believe (erroneously in my studied opinion) that the mask setting on the resmed machines has something to do with the excess leak calculation, however, when you look at the stated leak rates for the three masks in question:
f10: 22lpm@4cm, 41@12, 54@20
n10: 20lpm@4cm, 37@12, 49@20
p10: 20lpm@4cm, 37@12, 49@20
that theory kinda loses some credence. plus, even if there was
something to it, the difference between n10 and p10 is... well, you see above.
evidence points to the mask setting being used the same way system one resistance is, to better compensate for the resistance to flow that the different masks have,
(1.0, 1.2, and 1.4cm @ 100lpm, respectively)
if this theory is right, setting the machine for nasal when you have a pillow mask would result in very slightly lower
pressure at the mask than at the correct setting.
the mask type setting is also used in helping the machine detect mask off for the smartstart auto start/auto stop. the first time I put a p10 on my machine, I was dismayed that the machine didn't stop running when I took the mask off. after saying "ahah" and changing the setting from full to pillow, smart start works perfectly.
(04-26-2016, 09:03 AM)Snowbird47 Wrote:
Quote:if you have two traces on the SH leak chart the highest trace is the unadjusted rate (includes vent) and the lower trace is the actual calculated leak rate. Yes it "should" be at zero. There are only two requirements 1. whatever it is doing, can you sleep through it? 1. is the adjusted leak rate less than what the Airsense can compensate for (24 L/M) if you meet both of these then it does not really matter.
I also only have ONE trace on the SH leak chart - why is that, and how do you get two (I can find no way to do that in preferences)?
this is what happens when people post without figuring out what they're posting about, sadly.... confusion.
respironics machines report *total* leak rate, sleepyhead makes a guess as to what the excess leak rate is, and creates a second, lower trace, for respironics machines.
resmed machines report *excess* leak, so there's only one trace.