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 Heliox dives and how to manage your equipment. Also, you will need to be able to maintain your underwater posture. These are the main requirements for this type certification. You will need to take several water-confined sessions to get your card.
Normoxic
The IANTD Normoxic Trimix Diver course is a training course for divers who would like to dive up to 60 meters without breathing air. It includes a theory component and confined water skill practice. This course includes theory and four stages of decompression diving. These dives are used to teach emergency response skills. Students can earn the CCR trimix certification upon completion of the course.
Technical diver training could differentiate between the two levels. The normoxic trimix divers can begin their descent in a bottom mixture. 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 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 course, among many technical diving courses, is the most prestigious. This course teaches advanced techniques and demonstrates the correct use of travel gas. Students will also learn the dangers and hazards of technical diving and how to respond to emergency situations. The course includes six dives that will require the use anoxia-reducing gear.
Normal air contains 20 percent to 21% oxygen. Minimum is 18%. Normal air is safe for breathing at sea level as the atmospheric pressure hovers around one bar. Divers must use a mix of travel and oxygen when diving in water less than 18% oxygen. This will allow them to breathe deeper. For a 100 meter dive, normal air is not sufficient. Hypoxic divers need to use travel mixes in order to compensate.
Heliox
There have been many myths about diving and heliox 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 created by the fact that rare and expensive helium is. Hydrogen on the other hand is plentiful, inexpensive, and poses few toxicity concerns. Additionally, hydrogen can be used at all depths.
The Navy Experimental Diving Unit was one of the first diving organizations to study the science of decompression. More than 80 years ago, the research team created the first functioning heliox table. They proved the mixed gas myth wrong. Actually, the researchers have created a decompression table which could lower the chance of diving-related death. Use of heliox by divers must be in compliance with the manufacturer's instructions.
Heliox 32
The Heliox 32 Trimix Diver is a perfect replacement for the Heliair diving mix. 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 recommended for diving in all depths. There are many things you need to remember before switching to this type of gas. Learn more about this gas. You might be surprised at how well it performs for your specific needs.
You should consider what type of diving you are planning to do when choosing 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. It is important to consider your safety and that of your diving partner.