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A lightweight portable oxygen concentrator: Inogen One G3 (2,2 kg) Sequal Equinox, transportable concentrator with a high oxygen flow rate. A portable oxygen concentrator (POC) is a device used to provide oxygen therapy to people that require greater oxygen concentrations than the levels of ambient air. It is similar to a home oxygen ...
An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream. They are used industrially, to provide supplemental oxygen at high altitudes, and as medical devices for oxygen therapy .
Air Liquide held the patent on the original "Aqualung" (also written as "Aqua-Lung" or "Aqua Lung") until the patent expired sometime around 1960 to 1963. The term "Aqualung", as far as is known, first appeared in print on page 3 of Jacques-Yves Cousteau's first book, The Silent World, in 1953.
It can be worn on the front or on the back. It is rated as duration on a filling: oxygen 4 hours or more, soda-lime 7 hours at 21.1 °C (70 °F). Operational depth range is 0-7m or 0-10m depending on the organisation's code of practice. [13] [14] It is 48 cm = 19.2 inches high, 30 cm = 12 inches wide, 19 cm = 7.6 inches thick.
By the 21st century one of the popular oxygen systems on Mount Everest used carbon-fiber reinforced aluminum bottles, with a 3-liter cylinder of oxygen weighing 7 pounds (3.2 kg) (3.2 kg) when filled up at 3,000 pounds per square inch (210 bar). [42]
A resuscitator is a device using positive pressure to inflate the lungs of an unconscious person who is not breathing, in order to keep them oxygenated and alive. [citation needed] There are three basic types: a manual version (also known as a bag valve mask) consisting of a mask and a large hand-squeezed plastic bulb using ambient air, or with supplemental oxygen from a high-pressure tank.
by gas mixture: air, oxygen enriched air, pure oxygen or mixed gases, by purpose: underwater diving, mountaineering, aeronautical, industrial, emergency and escape, and medical. The user respiratory interface is the delivery system by which the breathing apparatus guides the breathing gas flow to and from the user.
Z88.2 notes that these SCBAs normally use compressed air, but can also use cryogenic air or compressed oxygen. However, the standard warns that "the actual service time is usually less than the NIOSH rated service time". If compressed air is used, Z88.2 requires the use of "CGA G7.1–2011 Grade D breathing air". [14]
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