How rebreathers work

the check valves in the mouthpiece ensure that the gas flows around the loop in only one direction the gas passes through a water trap and an exhalation counterlung on its way to the back of the rebreather at the back of a rebreather a two cylinders one for oxygen and one for air or diluent the pressure in the cylinders is reduced by the two first-stage regulators which feed gas into the rebreather the cannister housing contains a scrubber material that removes carbon dioxide from the exhaled breathing gas the exhaled gas goes through the scrubber canister which removes all the co2 exhaled by the diver the two oxygen sensors analyze the gas and check that the oxygen content is at the correct level oxygen content is described as partial pressure oxygen or PPO two if the oxygen fraction drops due to the divers metabolism or an ascent the seven will automatically compensate by adding oxygen into the loop or newly added oxygen will be directed through the scrubber before reaching the diver this gives the gases ample time to mix properly freshly scrubbed and refreshed breathing gas returns to the diver via an inhalation counterlung on the mouthpiece after that the breathing loop cycle starts all over again

Channel: Kiwidiver Phuket | PADI 5 Star IDC

Views: 15,113

Rating: 4.6666665 out of 5

Keywords: rebreather, PADI, Poseidon, Thailand

Id: aMdjhl08hnE

Length: 1min 33sec (93 seconds)

Published: Sat Feb 10 2018