SUUNTO Vyper - Manual (Page 11)

9
1.1.2. Dive Computer Limitations
While the dive computer is based on current decompression research and technol-
ogy, you must realize that the computer cannot monitor the actual physiological
functions of an individual diver. All decompression schedules currently known
to the authors, including the U.S. Navy Tables, are based on a theoretical math-
ematical models, which are intended to serve as a guide to reduce the probability
of decompression sickness.
1.1.3. Enriched Air and Safety
Diving with enriched air provides the diver an opportunity to reduce the risk of
decompression sickness by reducing the nitrogen content in the breathing gas
mix.
However, when the gas mix is altered the oxygen content of the mix is generally
increased. This increase exposes the diver to an oxygen toxicity risk not usually
considered in recreational diving. In order to manage this risk the dive computer
tracks the time and intensity of the oxygen exposure and provides the diver with
information to adjust the dive plan in order to maintain oxygen exposure within
reasonably safe limits.
In addition to the physiological effects of enriched air on the body there are op-
erational considerations to be addressed when handling altered breathing mixes.
Elevated concentrations of oxygen present a fi re or explosion hazard and you are
advised to consult the manufacturer of the diving equipment you will be exposing
to enriched air with regard to limitations.
WARNING!
IF YOUR DIVE COMPUTER IS INSTALLED IN A CONSOLE, DO NOT
EXPOSE THE PRESSURE GAUGE TO ANY GAS MIX CONTAINING
MORE THAN 40% OXYGEN! Enriched air with greater oxygen content may
present a risk of fi re or explosion and serious injury or death.