If you're looking for your recreational trimix diving certification, it is important to understand the differences between gas types and how they mix. Learn how to manage your equipment and the differences between Normoxic, Hypoxic, or Heliox dives. A good understanding of how to maintain your body posture underwater is essential. These are the most important requirements for this type certificate. You will need to take several water-confined sessions to get your card.
Normoxic
The IANTD Normoxic Normmix Diver course is designed for divers who wish to be able to dive to 60m without the use of breathing air. This course includes both a theory and confined water skills practice. This course does not only cover theory but also covers four stage dives. During these dives, students practice skills for emergency scenarios. Students can earn the CCR trimix certification upon completion of the course.
Technical diver training can be used to differentiate between the two levels. The bottom mix can be used by a normoxic trimix diver. A hypoxic trimix diver, on the other hand, must begin their descent in a travel mixture. This requires more complex procedures as the diver must change gases during the first descent. Hypoxic trimix divers may be required to dive longer as they can mix more gases.
Hypoxic
The SSI Hypoxic Trimix Diver is one of the best technical diving courses. This course teaches advanced techniques and demonstrates the correct use of travel gas. Students will also learn how to deal with emergencies and the dangers of technical diving. Six dives are required to be equipped with anoxia-reducing equipment.
The content of oxygen in normal air ranges from 20 to 21 percent. The minimum content of oxygen is 18%. Normal air is safe to breathe at sea level because of the low atmospheric pressure (around one bar). Divers should use a travel mixture when diving in water that has less than 18% of oxygen. This will allow divers to breathe deeper. It is important to remember that breathing normal air is not enough for a 100 meter dive. Hypoxic divers need to use travel mixes in order to compensate.
Heliox
Several myths about heliox and diving have arisen since the Hans Keller tragedy. Some were concerned about the slow decompression of helium and others worried about CNS effects. These myths were fuelled by the fact that Helium is scarce and costly. Hydrogen, by contrast, is abundant and cheap. Hydrogen can also be used at any depth.
The Navy Experimental Diving Unit is one of the earliest diving organizations to explore the science behind decompression. More than 80 years ago, the research team created the first functioning heliox table. They proved the mixed gas myth wrong. In fact, the research group has developed a decompression table that has the potential to reduce the chances of death while diving. Follow the instructions of your manufacturer if you are a diver using heliox.
Heliox 32
The Heliox 32 Trimix Diver is an excellent alternative to standard Heliair. This gas consists of less than 21% oxygen. It is therefore less expensive than air and also less toxic. It is recommended for diving in all depths. There are many things you need to remember before switching to this type of gas. You can read on to find out more about this gas. You might be surprised at how well it performs for your specific needs.
It is important to think about the dive type you will be taking when selecting a tank. Heliox and nitrogen diver tanks need to have lower helium levels, as they each release oxygen at a different rate. Combining both can cause decompression sickness and is dangerous. You should also consider the safety of a diving partner, as they might be able to share your weight with you.