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In the PVR-BASC the discharged gas volume is a function of depth and breath volume. The passive addition occurs during each inhalation as the loop volume is deficient by the amount discharged. The volumetric ratio of discharged gas to exhaled gas volume varies with depth, and decreases as the pressure increases. [2]
In 1972, Robert Hollis founded the parent company American Underwater Products which did business as Oceanic. [2] Aeris, Originally also a brand of American Underwater Products, founded in 1998, was merged with Oceanic in 2014. The Aeris brand covered a wide range of recreational scuba equipment, including regulators, dive computers, buoyancy ...
In 1983, Edward D. Thalmann published the E-L model for constant P O 2 nitrox and heliox closed circuit rebreathers, [19] in 1984 published U.S. Navy Exponential-Linear algorithm and tables for constant P O 2 Nitrox closed circuit rebreather (CCR) applications, [20] and in 1985 Thalmann extended use of the E-L model for constant P O 2 heliox ...
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).
This category has the following 2 subcategories, out of 2 total. ... (11 P) Rebreather makers (19 P) Pages in category "Rebreathers" The following 67 pages are in ...
Depth on a rebreather; Depth in a cave on a rebreather; Depth at altitude on a rebreather; Depth running a line; He used a Mk15.5 with Juergensen Marine Hammerhead electronics and the following gas mixtures: trimix 4/80, 10/70, 15/55, 17/40, 26/25, air, nitrox50, 100% oxygen. The cave elevation was 1,550 metres (5,090 ft) and the dive duration ...
Surface-supplied diver at the Monterey Bay Aquarium, Monterey, California US Navy Diver using Kirby Morgan Superlight 37 diving helmet [1]. Surface-supplied diving is a mode of underwater diving using equipment supplied with breathing gas through a diver's umbilical from the surface, either from the shore or from a diving support vessel, sometimes indirectly via a diving bell. [2]
The invention revolutionised autonomous underwater diving by providing a compact, reliable system capable of a greater depth range and endurance than its precursors, and was a major factor influencing the development of recreational scuba diving after WWII. The twin-hose Aqua-Lung demand regulator is the foundation of all modern scuba regulators.