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 about Normoxic, Hypoxic, and Heliox dives and how to manage your equipment. Additionally, you'll need to know how to keep your body upright underwater. These are some of the key requirements for this type of certification. You will need to do several practical sessions in restricted water before you can get your card.
Normoxic
The IANTD Normoxic Normmix Diving course is designed to train divers who are interested in diving up to 60 metres without using oxygen. It includes a theory component and confined water skill practice. This course does not only cover theory but also covers four stage dives. Students learn skills to deal with emergency situations during these dives. Students can earn the CCR trimix certification upon completion of the course.
Technical diver training may be able to distinguish between the two levels. A normoxic trimix diver may start with a bottom mix. 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 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 about the hazards and risks of technical diving as well as how they can respond to emergencies. The course also includes 6 dives that require the use of anoxia-reducing equipment.
When breathing normal air, the content of oxygen is 20 percent to 21 percent. The minimum level is 18%. However, at sea level, breathing normal air is safe because atmospheric pressure is around one bar. When diving in water with less than 18 percent of oxygen, divers must use a travel mix. This will help divers breathe deeper. For a 100 meter dive, normal air is not sufficient. To compensate, hypoxic divers will need travel mixes.
Heliox
Many myths surrounding heliox, diving and the Hans Keller tragedy have emerged since then. 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, by contrast, is abundant and cheap. Hydrogen can also be used at any depth.
The Navy Experimental Diving Unit was one of the first diving organizations to study the science of decompression. The first functioning heliox tables were developed by the research team more than 80 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. Use of heliox by divers must be in compliance with the manufacturer's instructions.
Heliox 32
The Heliox 32 Trimix Diver is an excellent alternative to standard Heliair. This gas consists of less than 21% oxygen. As a result, it is not only cheaper than air but is also less toxic. It is recommended for diving at all depths. But, before you decide to switch to this gas, here are some things that you should be aware of. You can read on to find out more about this gas. It might surprise you how well it works for your particular needs.
You must consider the type and purpose of your dives when choosing a tank. Because they release oxygen at different rates, nitrogen diver tanks and heliox tanks should have lower helium contents. Combining both can cause decompression sickness and is dangerous. A diving partner might be able share your weight, so you should consider their safety.