Mark 5 SCR Rebreather Overview
 At
ABEL Engineering we have designed and developed an SCR (Semi
Closed Rebreather) that can be used in conjunction with most
Stab Jackets, Cylinders and OC (Open Circuit) Demand Valves.
The reason for this being twofold, economics and safety.
- Why replace equipment that you already have, are
familiar with and know how to use to it's best
advantage?
- Since most OC Scuba Cylinders are in the
region of 7lts WC (Water Capacity) and above then should
there be an emergency situation where the breathing loop
becomes flooded etc. then switching to OC on a larger
cylinder should have a greater endurance if necessary.
The ABEL Mk5 SCR is a modular kit system, that is best
thought of as an SCR Second Stage. With this equipment you
can upgrade your existing OC SCUBA to SCR SCUBA. The only
modification required to your existing equipment is to have
it cleaned and serviced for Nitrox use. The valve train for
gas flow control plugs directly into your first stage
regulator via one of the LP ports. The Counter-lungs and
scrubber unit can be configured virtually as you please, but
are most conveniently mounted via the use of a Spine Plate,
either side and above for single or twin cylinder
configuration. Although the MK5 is a purely mechanical
device electronic monitoring of PPO2 levels and requisite
decompression profiles can be determined by fitting a PPO2
Sensor into the breathing loop, index linked to a dive
computer.
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Some of the unique features of the
Mark 5 SCR are:
- Compatible with most hard back stab
jackets
- Can be used with almost any diving
cylinders ranging from 3 to 15 litres in
single or twin set configuration for
dual gas mixes
- Variable volume (charge weight) scrubber
unit for a more economical use of
absorbent material
- Adjustable fine gas flow metering system
that can be used for any gas/Nitrox mix
requiring a flow rate of between 5
litres per min to 30 litres per min.
- Four sizes of counter lung volumes for
various torsos and system configurations
- Tailored breathing hose lengths
- Economically designed twin hose
mouthpiece
- Ditchable ballast system
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