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Re: Manometer results
Posted: Mon Jun 03, 2019 12:38 pm
by palerider
Julie wrote: ↑Mon Jun 03, 2019 12:29 pm
Sorry, brain f..t, but do you think you can round up even more of you to make sure I get the message? Just in case?
Best to *NOT COMMENT* unless you actually understand the issue.
Re: Manometer results
Posted: Mon Jun 03, 2019 1:25 pm
by Wulfman...
Goofproof wrote: ↑Mon Jun 03, 2019 12:37 pm
Den, is that piece of your Manometer, that the guage, (It looks to me like a clear adapter with a small fitting for the manometer to hook to). If it is is the big hole thru it restricted (A 4 MM to 8 MM sized hole) not full open diameter.
If it is full open, the test would not be correct. To be correct the mask vent rate needs to be in the circuit, that can be made by restricting the flow with the correct hole size in a plug, restricting the flow downstream from the gauge line or hooking another XPAP hose and your mask on the adapter, then wearing the mask. The first method would be more correct, if I knew the correct size to make the hole, but as I said I lost the correct spec. That said the hose and mask would also work.
Putting the Manometer on the machine flow with the flow deadheaded (Blocked off), will show the pressure the XPAP is putting out, but it will NOT show the XPAPs ability to maintain that pressure, and also the needed flow volume for treatment. I wish I had not lost the spec for the test hole size but it's been 14 years, the mind is almost the first thing to go.
Jim But not the Last!
One end of the adapter on the end of the small hose coming from the manometer goes into the CPAP hose and then you put your finger over the other end to block the air from coming out. Should be an air-tight circuit and then watch the gauge to see where it stops.
Den
.
Re: Manometer results
Posted: Mon Jun 03, 2019 1:38 pm
by Goofproof
Wulfman... wrote: ↑Mon Jun 03, 2019 1:25 pm
Goofproof wrote: ↑Mon Jun 03, 2019 12:37 pm
Den, is that piece of your Manometer, that the guage, (It looks to me like a clear adapter with a small fitting for the manometer to hook to). If it is is the big hole thru it restricted (A 4 MM to 8 MM sized hole) not full open diameter.
If it is full open, the test would not be correct. To be correct the mask vent rate needs to be in the circuit, that can be made by restricting the flow with the correct hole size in a plug, restricting the flow downstream from the gauge line or hooking another XPAP hose and your mask on the adapter, then wearing the mask. The first method would be more correct, if I knew the correct size to make the hole, but as I said I lost the correct spec. That said the hose and mask would also work.
Putting the Manometer on the machine flow with the flow deadheaded (Blocked off), will show the pressure the XPAP is putting out, but it will NOT show the XPAPs ability to maintain that pressure, and also the needed flow volume for treatment. I wish I had not lost the spec for the test hole size but it's been 14 years, the mind is almost the first thing to go.
Jim But not the Last!
One end of the adapter on the end of the small hose coming from the manometer goes into the CPAP hose and then you put your finger over the other end to block the air from coming out. Should be an air-tight circuit and then watch the gauge to see where it stops.
Den
.
I was afraid of that, it looked like a standard cheap O2 adder fitting. Doing it by blocking off the end will give you the correct pressure the XPAP it's putting out, however it will NOT correctly tell you if your XPAP is up to providing The Correct pressure at your treatment pressure because flow isn't in the mix. You XPAP can meet the pressure needs, and fail the flow needs, unless both are measured at the same time. It sounds like his machine is not correct, unless we are not understanding how he is testing it, best take it in for testing and hope they know how to really test it. Good to hear from you! Jim
Re: Manometer results
Posted: Mon Jun 03, 2019 1:57 pm
by ChicagoGranny
Goofproof wrote: ↑Mon Jun 03, 2019 1:38 pm
It sounds like his machine is not correct, unless we are not understanding how he is testing it, best take it in for testing and hope they know how to really test it.
Yep.
Just as a person who likes to gamble, I would bet his machine is working correctly (within normal tolerances), but he doesn't know how to use the manometer.
I never bet more than I can afford to lose!