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. Also, you will need to be able to maintain your underwater posture. These are the essential requirements for this certification. You will need several sessions in confined water to obtain your card.
Normoxic
The IANTD Normoxic Normmix diver course is for those who wish to dive up to 60 m without breathing air. It includes a theory component and confined water skill practice. In addition to theory, this course also includes four stage decompression dives. These dives allow students to practice emergency skills. Students can earn the CCR trimix certification upon completion of the course.
Technical diver training might differentiate between the two levels of trimix divers. The bottom mix can be used by a normoxic trimix diver. To begin their descent, hypoxic trimix divers must use a travel mix. This means more complicated procedures, as the diver must switch gases during the first descent. Hypoxic trimix divers may also need to be able to dive longer due to the greater variety of gases they use.
Hypoxic
The SSI Hypoxic Trimix Diver is one of the best technical diving courses. The course covers advanced techniques, multiple decompression gas systems and proper use of travel gases. Students will also learn about the hazards and risks of technical diving as well as how they can respond to emergencies. Six dives require anoxia-reducing equipment.
Normal air contains 20 percent to 21% oxygen. The minimum content of oxygen is 18%. At sea, breathing normal air is safe as the atmospheric pressure is only one bar. Divers must use a blend of travel mixes when diving in waters with less than 18% oxygen. This will allow divers to breathe deeper. For a 100 meter dive, normal air is not sufficient. To compensate, hypoxic divers have to use travel mix.
Heliox
Since the Hans Keller tragedy, many myths have been created about heliox diving. Some were concerned by the long decompression time of helium. Others were more concerned about CNS effects. These myths were fueled by the fact that helium is rare and expensive. Hydrogen, however, is cheap and abundant. It also has few toxicological concerns. In addition, hydrogen is safe for use at all depths.
The Navy Experimental Diving Unit is one of the earliest diving organizations to explore the science behind decompression. The first functioning heliox tables were developed by the research team more than 80 years ago. They proved the mixed gas myth wrong. The research group actually developed a decompression system that could reduce your chances of dying while diving. A diver who uses heliox must follow the manufacturer's instructions carefully.
Heliox 32
The Heliox 32 trimix divers is a great alternative to the Heliair standard diving mixture. This gas is less than 21% in oxygen. Because it contains less oxygen than air, it is cheaper and more toxic than the latter. It is highly recommended for diving to any depth. There are some things to keep in mind before you switch to this gas. Read on to learn more about this gas. You may be amazed at the results it can provide for your particular needs.
You must consider the type and purpose of your dives when choosing a tank. Heliox and nitrogen diver tanks need to have lower helium levels, as they each release oxygen at a different rate. Divers who combine both are dangerous and can get decompression sick. A diving partner might be able share your weight, so you should consider their safety.