Issues with SAC terminology

[Willem Ferguson]

This is in some ways a sensitive issue and maybe reflect existing 
discussion on this mail list that I am not aware of. The term "Surface 
Air Consumption" (SAC) is probably used wrongly most of the time, 
including by myself. This is because it is conflated with the 
Respiratory Minute Volume (RMV). Since, in our broad way of talking, we 
measure SAC as cu ft/minute or liters/minute, this is the volume that is 
referenced and should more accurately be indicated as RMV. SAC rate is a 
pressure indication, the number of bars of gas used per minute and not a 
volume. Corrected for cylinder size, it allows calculation of RMV. This 
is also consistent with the NAUI and IANTD training materials that I 
have contact with. Shouldn't we at some stage get the terminology 
accurate and replace SAC in the UI throughout with RMV?
Kind regards,
willem