Ocean Technology Systems Guardian, Руководство пользователя

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DESCRIPTION
What is a “Full-Face Mask?”
The OTS Guardian FFM differs from standard scuba equipment in that the
second stage regulator is incorporated into the mask and the mask covers
your “full” face, hence the term.
There are four primary reasons to dive a Guardian FFM:
1. Environmental protection
2. Physiological considerations
3. Communications
4. For the fun of it
Environmental Protection
Anytime a diver is in water that would be considered less than healthy
(e.g., biological/chemical contamination, extreme cold, etc.), protection
is of the utmost importance. The Guardian FFM affords a significant
protection advantage over that of standard bite mouthpiece regulators
and masks. While not a substitute for full protection as required in hazmat
diving, the Guardian FFM, along with dry gloves and a drysuit with
attached latex hood, can afford protection from contaminated water that
standard equipment cannot. This configuration is commonly seen in light
commercial and public safety diving.
Physiological Considerations
The Guardian FFM protects the diver in other ways as well. If, for any
reason, a diver were to become unconscious underwater, the Guardian
FFM is able to maintain a breathable airspace in front of the diver’s nose
and mouth assisting in survival (assuming the scuba tank has air). This
aspect of the Guardian FFM is extremely useful for divers with TMJ, divers
with dentures, disabled divers, and divers using high concentrations of
oxygen (convulsion risk; special oxygen cleaning required).
Communications
For underwater communications, an airspace is required to allow for
articulation and placement of a microphone. This is best accomplished
with the Guardian FFM. The Guardian FFM has an oral/nasal cavity
that provides optimal communications, while some FFMs have the nose
separated from the mouth. This separation alters the voice slightly, as in
pinching your nose when talking.