O2 Cells

[Chuck_Northrup]

Ghosch,

The longest cells will retain their accuracy in a BEST case scenario is 18 months. Even if everything seems to be working well I would replace them at that point. How to replace the cells on the Inspiration could be a whole thread in and of itself. :

I personally think it best to change all 3 at the same time using the same lot number cells. Some like to rotate the cells so that you replace one every 3-6 months and you would therefore have 3 different age cells in at any given time. While it seems intuitive that you would have a better system of checks and balances (i.e. no two cells would produce the same errors at the same time) if you consider the system as a whole I think there is little benefit there. It is easier on the wallet to change one at a time however.

Igotoofar,

DO NOT store you sensor in any type of inert gas. Storing the cell in a closed container of air is the best option. Diver have stored their cells in Argon, Helium, etc. and have found that it "puts the cell to sleep" so to speak. It will take a long time for the cell to "wake up" and give you accurate readings. There is generally a lag period any time you install new cells before the readings stabalize and if you store a cell in inert gas you will encounter this problem every dive. :'(

Chuck