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. It is also important to understand how to maintain your body position underwater. These are just a few of the requirements to obtain this certification. For your card to be issued, you must complete several practice sessions in confined waters.
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. The course also includes theory, four-stage decompression dives and a practice component. Students learn skills to deal with emergency situations during these dives. 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 divers can begin their descent in a bottom mixture. For a hypoxic trimix diver to start their descent, they must dive in a mixture of bottom and travel gases. The diver will need to switch gas mixtures during their first descent, which can make it more difficult. 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 Course is the most prestigious of all the technical diving courses. 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. Six dives are required to be equipped with anoxia-reducing equipment.
The oxygen content in normal air is between 20 and 21 percent. Minimum 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 help divers breathe deeper. Normal air will not be sufficient for a 100 meter dive. For this reason, hypoxic divers must use travel mixes to compensate for this.
Heliox
Several myths about heliox and diving have arisen since the Hans Keller tragedy. Some were concerned at the slow decompression time of Helium. Other were worried about CNS consequences. These myths are fueled by the fact helium can be expensive and scarce. Hydrogen, by contrast, is abundant and cheap. Furthermore, hydrogen can be used safely at all depths.
One of the first diving groups to study decompression was the Navy Experimental Diving Unit. They developed the first working heliox tablets more than eighty-years ago. The mixed gas myth was disproven by them. In fact, they have developed a table for decompression that may reduce the likelihood of your death from diving. The manufacturer's instructions must be followed by any diver using heliox.
Heliox 32
The Heliox 32 trimix divers is a great alternative to the Heliair standard diving mixture. This gas has less than 21% of oxygen. Because it contains less oxygen than air, it is cheaper and more toxic than the latter. It is recommended for diving at all depths. However, there are a number of things you should consider before switching to this gas. Read on to learn more about this gas. It might surprise you how well it works for your particular 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. A dive that combines both is dangerous, and it can lead to decompression sickness. Consider the safety of your diving partner as they may be able to share your weight.