Paulette, I have two questions.
I had been told that if you add two concentrators together, then you get the combined total of the LPM and whatever the pressure is. For example: two 5 LPM machines that each put out 8 psi would yield 10 LPM at 8 psi. Is this true? If say one of those machines were only 5 psi, would that mean the combined psi would be between 5 and 8 psi, but definitely less than 8 psi?
My other question is: does the speed at which other units cycle back and forth between seive beds affect how noticeable any breathing is? Do some machines have a shorter lag time than others? I am just curious how some people say that their concentrators breathe while others say that they do not. I know that my Integra does not breathe, and it's cool to know the reason.
EDIT to add: PS Jack, Justin, or Larry: If any of you guys have any input, I'd like to hear from you, too.
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