O2 Concentrator O2 Pressure

[pianoman]

I have a problem walking around my house using a hi liter Concentrator. I have to use a higher liter flow, 10 liters but it doesn't seem to have near the O2 pressure that my oxygen tanks produce. I set the O2 tanks at 8 liters and can walk much farther without problems. It also seems there is more 02 pressure from the tanks. I use a 50 ft hose (recently replaced) connected to my home hi volume 02 Concentrator. A serviceman from my Concentrator supplier came out and said nothing was wrong. Any ideas?

[Salmo]

I've no experience with the bigger O2 cylinders but as far as being able to walk further with the cylinders I wonder if it is partly due to oxygen purity. Concentrators often produce only 87-95% purity while pre-filled cylinders are probably 99% purity so you might be getting approx 10% more O2 from the cylinder.

Worth mentioning this to your O2 assessment team if you have one.

[pianoman in reply to Salmo]

Thanks for your ideas.

[sarcoid1234]

Salmo's comment is useful to me too, as I had been thinking the same as you, pianoman. Another thought: I have a concentrator at 4L/min when walking around, and I have been told by the oxygen engineer that 30 feet oxygen hose is the longest that should be used.

[pianoman in reply to sarcoid1234]

I have a feeling your right and I may have to shorten the hose. Thanks again and God bless.