Pressure line connection

I feel really dumb asking this but here goes. Does the pressure line at the mask end of the tubing connect into anything? I had a cpap before and it didn't have a pressure line. Not sure how this all works. I have a GK420E if that helps.

Thanks Annie

And I forgot to tell you I have a breeze mask.

Annie

lookingforrest wrote:I feel really dumb asking this but here goes. Does the pressure line at the mask end of the tubing connect into anything?

I feel really dumb saying................one end the machine, the other end the mask and the mask to head

lookingforrest wrote:Does the pressure line at the mask end of the tubing connect into anything?

Nope, the mask end just lays there inside the big hose and does it's job sensing your breathing patterns.
(Not a dumb question at all since this isn't something you've seen before with other machines! When I first used the PB420e, I didn't connect the OTHER end of the sensor line to the machine. Whoops!)

Guest, thank you for the very nice reply. I appreciate the information.

Annie

Not a dumb question at all.

My PB330 Bilvel works the same way. The 2nd pressure line ends at the mask entry point and is used to sample the pressure at your face whereas almost all other brands sample your breathing at the machine end.

If I disconnect the machine end of the small pressure line the pressure at the mask end goes to maximum. The one time I did this on my BiLevel the mask became a hovercraft on my face (my machine goes to a 30cms max).

The PB420S I have also senses pressure at the mask rather than the machine.

If you have an interest in looking at photos of inside these machines and want to see how different brands set up the pressure sensing - ask & I will provide a link.

Cheers

DSM

DSM

I would like you to post that link for me. I have a lot to learn. I've been on cpap for 4 years and have left everything up to the doctor. After finding this site I've decided I need to get more involved in my own treatment. So that site would be of interest to me.
Thanks
Annie

http://www.internetage.com/cpapinfo/

Click on any of the disassembled machines (part 2 of the menu) and you should be able to locate the pressure sensor lines.

Notes.

1) The Remstar plus has none.

2) The Remstar AUTO & BiPap both have a pair of sensing tubes that monitor flow just at the air outlet.

3) All PB420 models have a 2nd sensor line inside the main cpap tube
you should be able to locate the entry points into the 2 PB Machines from the photos. Also there isd a photo showing the 2nd pressure tube in the PB hoses (see dissasembled PB420s).

4) I can't recall just at the moment, but think that Invocare Polaris ISP9800 has no sensor lines anywhere while the models with 'SoftFlex' do (but I can't swear by this until I double check). I haven't done ther photos of the ISP9800 yet.

5) The ResMed S7 based units all have pressure sensor lines that detect flow inside the blower unit itself. I believe the S6 are similar but I can't say for certain with the S8 other than I have never been able to dismantle the one I have (screws come out but two halves remain firmly in place).

I believe all newer models of xPAP now have pressure sensor lines and also all newer model xPAPs now rely on changing the speed of the blower to change pressure. You can see that the newer units all have the fans encased in foam of some sort whereas they used to mount the blowers on legs in the units bases and didn't used sound baffling.

The most amazing units are the PB42x range due to how tiny everything is and how light they are. The PB330 is also very light & very condensed for what it can do.

Cheers

DSM