User:Pbsouthwood/Rebreather notes

=Dräger Ray=

=Dräger Dolphin=

=Passive addition/Demand controlled=

Ventilation equivalents vary between individuals but are generally considered to be within the range of 15 to 30 but have been recorded as low as 10

Divers as a group tend to have a lower ventilation equivalent (than average)

Independant laboratory tests done on a RB-80 indicate that the oxygen fraction in the breathing loop calculated from the formula FiO2 = FsO2-(1-FsO2)/(K*r*PA) slightly overestimated, and the Nuckols formula slightly underestimated the measured values for a range of depths and breathing rates. The actual values could vary significantly with variations in the ventilation equivalent K.