tcpip95
Contributor
@Steve_C and @EFX
I think you're both right. The calculations the DC does, are in fact, very precise based on the inputs of depth and time. But I would agree that the precision is not as precise in practice because of other variables, such as the DCs position in the water relative to the body, natural arm movements and hanging on a line or bar, etc.. Is the precision of the calculations that important if you are vertical with your DC at chest level, or horizontal with your hands hanging down, or even if you are doing your SS inverted? As long as the majority of your carcass is somewhere above 20' and below 10', you're in the SS zone.
If it was necessary to be "absolutely" dead on accurate, it would be also be necessary to know exactly where a DC must be relative to your body and for it to always be right there. But what the DC is doing is very precise, based on ITS position in the water column.
Steve, you raise a great point. As a relatively new diver, I know to "use" the dive computer, but don't "rely" on it. IOW, plan the dive, and use the computer to verify the dive. I found it interesting about how it calculates 12 separate "tissue compartments" and then uses the most conservative calculation.
I pulled this out of my Genesis ReACT Pro manual:
MULTIPLE TISSUE TRACKING
The ReACT Pro tracks 12 tissue compartments with halftimes ranging from 5 to 480 minutes. The NiBG always displays the controlling compartment that is the only one important at that time.
Think of the NiBG as transparent displays laid on top of one another. The tissue compartment that has filled up fastest is the only one that can be seen from the top.
At any particular point, one tissue compartment may be absorbing nitrogen, while another that was previously higher may be off gassing. One compartment hands over control to another com-partment at a different depth.