Here is a description of the
I have all gases and bottles inside the chassis of the
IDA 71 rebreather.
The black cylinder (the volume is 2 liters, I think
that in your mind this looks like a Atlantis scrubber, but in fact it is a
cylinder) on the left side is my
bailout-diluent-BC-drysuit-inflation-gascylinder. Normally I use a Nitrox
50/50 for my easy and recreational dives up to 20 m. I only use one of the
original scrubbers (the blue on the picture) and without any 'Super oxide.'
(note: the original IDA71 is equipped with a Super oxide canister who
absorbs CO2 and water and delivers oxygen). The left two ports for the
unused scrubber coming from the breathing bag I closed with brass blanking
plugs. I don't use the original Russian Oxygen and Nitrox cylinders and all
the low and high pressure gas-lines in and outside the chassis. I only use
the original second stage regulator inside the breathing bag.
I installed the RG-UF/M cylinder (filled with oxygen)
on the right side of the chassis. The CMF-Regulator (0,9l/ min) of the
RG-UF/M I used as a constant flow oxygen injection. Oxygen-injection is
nearly always equivalent to my needs of oxygen. The injection line is
connected to that port at the counter lung, it was originally the
gas-input for the purge cycle to wash out oxygen or Nitrox.
The black 2-l-bottle is connected to the original port
of the second regulator-stage inside the breathing bag. This is necessary in
add diluent in the loop and for compensation of the counter lung when the
volume gets to small. It works automatically, if needed.
So the system is a fully closed Nitrox
rebreather with automatically oxygen and Diluent gas-injection. But you can
dive the rig manually too. It is easy to inflate two gases manually by
pressing the inflation-knobs. And is possible to use all kinds of different
gas as Diluent.
For controlling the PPO2 I installed two Drager
The mix of these rebreathers is a deviated model of
of Dave Sutton