Quote:
| Originally Posted by jptaylor9 Isn't the most conservative approach to put the VR3 into open circuit mode on whatever the diluent is. The SCR operation is just been used to make the bailout supply last longer. Could select OC 99% if you went to O2 rebreather mode @6m or less.
(Assuming you have a VR3) |
No, this isn't conservative at all. As you rebreathe the loop full of diluent, the PO2 will drop, also implying that the PP(Inert) will rise - so you will ongas faster the lonnger you rebreathe the gas for.
Also running the unit as an O2 rebreather you don't really need to apply SCR thinking, as you are running fully closed again, 100% in the loop is always 100% in the loop no matter how much you metabolise (but if you're decoing, which will effectively always be the case, there will be an inert increase over time however as you offgas inerts back into the loop)