When you are looking to get your recreational trimix diver certification, you should learn about the different types of gas and mix ratios. Learn about Normoxic (Hypoxic) and Helioxic dives as well how to manage equipment. Additionally, you'll need to know how to keep your body upright underwater. These are the essential requirements for this certification. You will need to do several practical sessions in restricted water before you can 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. It also has a theory component as well as confined water skill practice. The course also includes theory, four-stage decompression dives and a practice component. During these dives, students practice skills for emergency scenarios. Students can earn the CCR trimix certification upon completion of the course.
Technical diver training might be different from the other levels of trimix divers. The bottom mix can be used by a normoxic trimix diver. Hypoxic trimix divers, however, will need to dive in a mix of travel and bottom gas to start their descent. This means more complicated procedures, as the diver must switch gases during the first descent. Hypoxic trimix divers might have to dive for longer periods of time and may need to use a wider range of mixtures.
Hypoxic
The SSI Hypoxic Trimix Diver class is the highest-ranking technical diving course. This course teaches advanced techniques and demonstrates the correct use of travel gas. Additionally, students will learn about the risks and hazards of technical diving, as well as how to respond in emergencies. The course includes six dives that will require the use anoxia-reducing gear.
Normal air has a 20 percent to 21% oxygen content. The minimum level is 18%. At sea level, normal air can be breathed because the atmospheric pressure is approximately one bar. Divers must use a blend of travel mixes when diving in waters with less than 18% oxygen. This will allow them to breathe deeper. You should remember that 100 meters of diving requires more oxygen than normal air. To compensate, hypoxic divers will need travel mixes.
Heliox
Several myths about heliox and diving have arisen since the Hans Keller tragedy. Some were concerned by the long decompression time of helium. Others were more concerned about CNS effects. These myths were fuelled by the fact that Helium is scarce and costly. Hydrogen on the other hand is plentiful, inexpensive, and poses few toxicity concerns. Hydrogen is also safe to use 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 subsequently disproved the mixed gas myth. In fact, the research group has developed a decompression table that has the potential to reduce the chances of death while diving. The manufacturer's instructions must be followed by any diver using heliox.
Heliox 32
The Heliox 32 Trimix Diver is an ideal alternative to the Heliair combination. This gas has less than 21% of oxygen. As a result, it is not only cheaper than air but is also less toxic. It is also recommended for diving at any depth. There are many things you need to remember before switching to this type of gas. Read on to learn 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 Nitrox diver tanks should be lower in helium, since they each release oxygen at different rates. Combining them can cause decompression illness and could be dangerous. You should also consider the safety of a diving partner, as they might be able to share your weight with you.