Rebreather World - View Single Post - CMF Gas matching - 4 parts [reposted with working photo links].

**Freef** · 30th September 2007, 03:24

That would about do it!

It's easy from the comfort of my chair, but you may have been able to see the difference in flow rates by the howl of gas into the loop from the 32% jet compared with the 60% jet gentle hiss. I had a dive once where I got out straight after getting in because the 60% flow seemed high [it wasn't] and I swapped the hose to the 50% jet. Using 40% in the tank it still let me do the 20m depth we were aiming for anyway.

The other thing to remember about the mixing described in the article is that a loop flush at a depth beyond the MOD of the tank gas will cause a spike the fO2 of the loop, and hence the pO2.

30th September 2007, 03:24	#15 (permalink)
Freef Custom Title Disallowed! Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Land of the Freef, UK. Posts: 1,356	Re: CMF Gas matching - 4 parts [reposted with working photo links]. That would about do it! It's easy from the comfort of my chair, but you may have been able to see the difference in flow rates by the howl of gas into the loop from the 32% jet compared with the 60% jet gentle hiss. I had a dive once where I got out straight after getting in because the 60% flow seemed high [it wasn't] and I swapped the hose to the 50% jet. Using 40% in the tank it still let me do the 20m depth we were aiming for anyway. The other thing to remember about the mixing described in the article is that a loop flush at a depth beyond the MOD of the tank gas will cause a spike the fO2 of the loop, and hence the pO2. __________________ David. Currently owner of two differently sized ankles.
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