hornetplt
Guest
Is it possible to get an early CO2 breakthrough with high VO2(high CO2 generation) using a standard baseline radial scrubber and fresh sorb. I realize that there are many variables associated with scrubber design, type of sorb, length of use, water temp, depth, etc. The reason I am asking is that I recently had a CO2 hit after 5 hr of use with my Azimuth(rated for 6hr warm water, 8-12 grade, diving within recommended depth limits) and the symptoms I experienced were exactly the same as my first training dive with the unit. Those were an extreme headache, aching kidneys(I think) and an uncontrolable urge to breathe through my nose(I had to literally hold my nose closed to prevent breathing through nose). During that initial training dive, my instructor and I experienced a pretty decent current and fought it for most of the dive. My breathing rate was very high and accordingly VO2 and CO2 production must have been way up there. I experienced the same symptoms as the dive with 5hr old sofnolime.
I have been following a number of scubaboard posts on scrubber duration and have learned more than I ever learned during my rebreather instruction. I don't want this thread to turn into a discussion about specific rigs or scrubbers, but an assessment of CO2 breakthrough as a result of high diver workload(increased CO2 production).
My Azimuth is a manually controlled CCR and have been diving with it for about a year. Thanks in advance for the help/recommendations!
I have been following a number of scubaboard posts on scrubber duration and have learned more than I ever learned during my rebreather instruction. I don't want this thread to turn into a discussion about specific rigs or scrubbers, but an assessment of CO2 breakthrough as a result of high diver workload(increased CO2 production).
My Azimuth is a manually controlled CCR and have been diving with it for about a year. Thanks in advance for the help/recommendations!