Learn about gas mixtures and the different types of gas available to you when you seek your recreational trimix dive certification. Learn the basics of Normoxic, Hypoxic and Heliox diving and how to handle your equipment. It is also important to understand how to maintain your body position underwater. 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 for those who wish to dive up to 60 m without 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. These dives are used to teach emergency response skills. After completing the course, students can apply for the full CCR trimix certificate.
Technical diver training might differentiate between the two levels of trimix divers. The normoxic trimix diver can start on the bottom mix. To begin their descent, hypoxic trimix divers must use a travel mix. This makes it more difficult as the diver must switch gasses during the first descent. In addition, hypoxic trimix divers may have to dive longer, in addition to diving with a larger variety of mixtures.
Hypoxic
The SSI Hypoxic Trimix Diver class is the highest-ranking technical diving course. This course teaches students advanced techniques and uses multiple decompression gas systems, as well as the proper use of travel gas. Additionally, students will learn about the risks and hazards of technical diving, as well as how to respond in emergencies. Six of the dives will require you to use anoxia reduction equipment.
Normal air contains 20 percent to 21% oxygen. The minimum content of oxygen is 18%. However, at sea level, breathing normal air is safe because atmospheric pressure is around one bar. Divers who dive in water with less 18 percent oxygen must use a mixture. This will help them 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
Since the Hans Keller tragedy, many myths have been created about heliox diving. Some people were concerned about the long decompression times of helium, and others were worried about the potential for CNS effects. These myths are fueled by the fact helium can be expensive and scarce. Hydrogen, however, is cheap and abundant. It also has few toxicological concerns. Hydrogen can also be used at any depth.
The Navy Experimental Diving Unit (Navy) was one of the first diving units to investigate the science and practice of decompression. This research team was responsible for creating the first working Heliox tables over eighty years ago. They later disproved mixed gas myths. In fact, they have developed a table for decompression that may reduce the likelihood of your death from diving. Diving with heliox should follow all instructions.
Heliox 32
The Heliox 32 Trimix Diver is an excellent alternative to standard Heliair. This gas is less than 21% in oxygen. It is therefore less expensive than air and also less toxic. It is also recommended for diving at any depth. However, there are a number of things you should consider before switching 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 should consider what type of diving you are planning to do when choosing a tank. Heliox tanks and nitrogen divers tanks should have lower levels of helium because they release oxygen at differing rates. Combining both can cause decompression sickness and is dangerous. It is important to consider your safety and that of your diving partner.