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WD8CDH · 22nd May 2008, 16:21

If I were to design rebreather electronics again, I would design around the most RELIABLE and STABLE cell that I could find. I wouldn't worry about either nominal output or uncalibrated accuracy. The electronics could be easily designed to handle either high or low output cells.

My "day job" is designing instrumentation. One of the things that I do use is O2 sensors. Of the last 600 that I have used, only 5 have failed and that was a drift to zero volts output in a 5 to 7 day period after at least 5 months use. Unfortunatly, these cells (GS Yuasa KE-25) won't handle pressure over 22 psi so they can't be used reliably in rebreathers but they are great for measuring breathing mixes.

22nd May 2008, 16:21	#19 (permalink)
WD8CDH New Member Current Rebreather/s: MK 15.X Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Other SCR Home Build Join Date: Dec 2007 Location: NY Posts: 69	Re: AI cells sucks. Newer buy them again! If I were to design rebreather electronics again, I would design around the most RELIABLE and STABLE cell that I could find. I wouldn't worry about either nominal output or uncalibrated accuracy. The electronics could be easily designed to handle either high or low output cells. My "day job" is designing instrumentation. One of the things that I do use is O2 sensors. Of the last 600 that I have used, only 5 have failed and that was a drift to zero volts output in a 5 to 7 day period after at least 5 months use. Unfortunatly, these cells (GS Yuasa KE-25) won't handle pressure over 22 psi so they can't be used reliably in rebreathers but they are great for measuring breathing mixes. __________________ Ron Schroeder Former Commercial Diver, now Lazy Diver Last edited by WD8CDH : 22nd May 2008 at 16:23.
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