Brad_Horn
Contributor
- Messages
- 229
- Reaction score
- 66
"Deep Life Ltd have updated their study on "Characterisation of Oxygen Cells for Diving Rebreather Applications: Sourcing, Performance, Safety and Reliability" that has now spanned 16 years.
Despite it being a fundamental element of rebreather design and critical to the safe operation of any eCCR. Deep Life Ltd found that highlighting the explanation of how galvanic oxygen cells actually work was urgently required. After discovery that some recreational rebreather manufacturers were not aware of the simple fact that Oxygen must flow in and out of the cells freely in order for the diver to know their PPO2, and if the cell face was to be blocked by water, then the cell will continue to show the same PPO2 as before the water block occurred. See Sections 9.1.1, 9.1.2 and 10.1.8."
http://www.deeplife.co.uk/or_files/DV_O2_cell_study_E4_160415.pdf
Nothing new, just seems like some haven't done their research! Oops... Documentation of this issue goes back to the '90s.... http://johnclarkeonline.com/2012/12/...xygen-sensors/
Identification of the manufacturers who haven't considered this issue in the design of their eCCR is pretty easy: just check to see that it is covered in your units manual, published FMECA or unmanned testing documentation.
Despite it being a fundamental element of rebreather design and critical to the safe operation of any eCCR. Deep Life Ltd found that highlighting the explanation of how galvanic oxygen cells actually work was urgently required. After discovery that some recreational rebreather manufacturers were not aware of the simple fact that Oxygen must flow in and out of the cells freely in order for the diver to know their PPO2, and if the cell face was to be blocked by water, then the cell will continue to show the same PPO2 as before the water block occurred. See Sections 9.1.1, 9.1.2 and 10.1.8."
http://www.deeplife.co.uk/or_files/DV_O2_cell_study_E4_160415.pdf
Nothing new, just seems like some haven't done their research! Oops... Documentation of this issue goes back to the '90s.... http://johnclarkeonline.com/2012/12/...xygen-sensors/
Identification of the manufacturers who haven't considered this issue in the design of their eCCR is pretty easy: just check to see that it is covered in your units manual, published FMECA or unmanned testing documentation.
Last edited: