In Danish |
Passive flow semi-closed
rebreather
Or a semi closed mechanically self mixing apparatus. On this type of SCR the
addition of pre-mix in the loop is controlled by the diver’s rate of
breathing. The SCR will replenish the loop with a small doses
of fresh pre-mix for every breath the diver takes. Some models will even
tell the difference between full and half breaths, and adjust accordingly.
The gas in the loop will typically be vented out at a much smaller rate than
on the active flow SCR. The main advantage over the active flow SCR is that
the fraction of oxygen in the loop is not as dependant on the change in
metabolism (workload, current, deco etc.). Otherwise the possibilities and
limits are the same for all other SCRs.
On the picture you see an Interspiro DCSC, which is an anti-magnetic
rebreather used for underwater minesweeping. |
