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The equivalent air depth, for a given nitrox mix and depth, is the depth of a dive when breathing air that would have the same partial pressure of nitrogen. So, for example, a gas mix containing 36% oxygen (EAN36) being used at 27 metres (89 ft) has an EAD of 20 metres (66 ft).
Advanced nitrox certification (Advanced nitrox diver) requires competence to carry two nitrox mixtures in separate scuba sets, and to use the richer mix for accelerated decompression at the end of the dive, switching gases underwater at the correct planned depth and selecting the new gas on the dive computer if one is carried. For the purposes ...
(for example, 50% nitrox can be breathed at twice the pressure of 100% oxygen, so divide by 0.5, etc.). Of this total pressure which can be tolerated by the diver, 1 atmosphere is due to surface pressure of the Earth's air, and the rest is due to the depth in water. So the 1 atmosphere or bar contributed by the air is subtracted to give the ...
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ISO 13293 provides minimum training standards for gas blenders for recreational diving services at two levels. Level 1 gas blender is competent to blend nitrox and handle oxygen, air and nitrox, i.e. nitrox gas blender, and a level 2 gas blender is also competent to mix gases containing helium and argon, i.e, a trimix gas blender. [14]
[4] [5] [6] The agency aimed to provide training materials and education for specialized diving situations. Some courses offered by TDI include open circuit courses such as diving with Nitrox [7] as well as Rebreather [8] courses. They also provide training for overhead environments like caves and wrecks, mixed gas training and were one of the ...
ANDI - American Nitrox Divers International – Recreational diver training and certification agency, also ANDI International [6] EUF CB 2005005 [7] [8] ANIS - Associaziona Nazionale Istruttori Subacquei CMAS code ITA/F08 [2] ANMP - Association nationale des moniteurs de plongée – French recreational diver training and certification agency
A personal dive computer is a small computer designed to be worn by a diver during a dive, with a pressure sensor and an electronic timer mounted in a waterproof and pressure resistant housing which has been programmed to model the inert gas loading of the diver's tissues in real time during a dive. [9]