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In rebreather diving, the typical effective endurance of the scrubber will be half an hour to several hours of breathing, depending on the type and size of the scrubber, the absorbent characteristics, the ambient temperature and pressure, the operational mechanics of the rebreather, and the amount of carbon dioxide produced by the diver, which ...
Diving rebreathers must often deal with the complications of avoiding hyperbaric oxygen toxicity, while normobaric and hypobaric applications can use the relatively trivially simple oxygen rebreather technology, where there is no requirement to monitor oxygen partial pressure during use providing the ambient pressure is sufficient.
The semi-closed rebreather systems developed by Drägerwerk in the early 20th century as a scuba gas supply for Standard diving dress, using oxygen or nitrox, and the US Navy Mark V Heliox helmet developed in the 1930s for deep diving, circulated the breathing gas through the helmet and scrubber by using an injector system where the added gas ...
Occasionally extreme dive profiles require the use of a rebreather for bailout, and the RB80 can be carried as a back mounted pair, as one back mount and one side mount, or both side mounted for those occasions. The RGK is intended for sidemount. [1] The appropriate tank size depends on the dive activity and environment.
Scrubber breakthrough – Failure mode in rebreathers when the carbon dioxide scrubber is exhausted; Scrubber canister – Container for chemicals used to remove carbon dioxide from breathing gas; Scrubber endurance – The duration that a rebreather scrubber can adequately remove carbon dioxide
In closed circuit or semi-closed circuit rebreather diving, exhaled carbon dioxide must be removed from the breathing system, usually by a scrubber containing a solid chemical compound with a high affinity for CO 2, such as soda lime. [76]