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"Nitrox 32", or EAN 32, would be a nitrox blend with 32% oxygen and 68% nitrogen. This is a popular recreational blend for dives to depths up to 33 metres (108 ft). The nitrogen in the mixture is almost always provided by topping up the cylinder with air to the filling pressure.
Enriched Air Nitrox" or "EAN", and "Oxygen Enriched Air" are used to emphasize richer than air mixtures. [3] In "EANx", the "x" was originally the x of nitrox, [ 11 ] but has come to indicate the percentage of oxygen in the mix and is replaced by a number when the percentage is known; for example, a 40% oxygen mix is called EAN40.
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).
A 20-K tank gun. A 20-K tank gun converted to anti-tank use. The gun was installed in tanks under the name 45 mm tank gun model 1932 (20-K). In 1934, the gun was improved with a semi-automatic breech instead of the original quarter-automatic version. Other changes were in the elevation mechanism and the recoil system.
.32 ACP (Automatic Colt Pistol, also known as the .32 Auto, .32 Automatic, or 7.65×17mmSR) is a centerfire pistol cartridge. It is a semi-rimmed , straight-walled cartridge developed by firearms designer John Browning , initially for use in the FN M1900 semi-automatic pistol.
(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 ...
ISO 11107 Enriched air nitrox (EAN) diving (PADI equivalent – Enriched Air Diver) ISO 11121 introductory training programmes to scuba diving. (PADI equivalent – Discover Scuba Diving) Most PADI training programes are not directly covered by ISO standards.
The system used a copper diving helmet and standard heavy diving suit with a back-mounted set of cylinders and scrubber. Two versions were available, The DM20 for oxygen to 20 metres, and the DM40 for nitrox to 40 metres, using an oxygen cylinder and an air cylinder, and mixing the gas as it was used.