O2 sensors?

[FW]

I saw a thread on Rebreather world, saying Teledyne no longer sells CCR sensors. What is everyone using now?

[icestac]

Your cells go bad? You must be doing something wrong.

On a serious note, the AI cells are SUPPOSED to have gotten better in the last year and most are using those as an alternative. I will let you know how they work when I use all my Teledynes.

Cheers,
Jeff

[billyf]

heard that Max Tec pulled theirs too (well have designated that they are not intended for CCR use)

[Benthic]

<snip>
...the AI cells are SUPPOSED to have gotten better in the last year and most are using those as an alternative.
<snip>

Lord I hope so. We tried AI cells once a couple years ago, and we weren't pleased at all. I went back to Teledynes almost immediately and swore that I'd never use anything else.

From what I can tell now, AI is my only option.

Brian

[JDostal]

It seems that Teledyne got out of the game due to so many people/families bringing lawsuits against them.

I'm set for the next year, I got my rebreather and ordered 3 cells + 1 spare about a week before the news hit the innerwebs.

Everyone I have talked to that dives ccr's says that the AI cells are unstable, die fast and do other funky things so I am not looking forward to next spring when I have to start buying new cells.

The guy that runs DiveGearExpress and several reps from AI have jumped onto the Rebreather World forums and have promised that the problems everyone is familiar with are a thing of the past. Still a little nerve wracking though.

I calibrated my Teledynes after leaving them in air for a day or so after opening them and I only have to do minor tweaks every weekend when I go diving and the variance between the three during a dive is next to nothing. I like that.

But it seems that for now AI is the only company offering O2 sensors that are rated/intended for rebreather use.

[deepairmike]

In a few months there will be a new source. In the meantime teledyne is still making them for medical we need to find someone in that field to get us a big box.

[sea2summit]

In a few months there will be a new source. In the meantime teledyne is still making them for medical we need to find someone in that field to get us a big box.

Black market, that's what I was looking for

Seriously though I only have two spares and three really old ones I'm currently using sooo whatever happens I hope it happens soon.

[crazyduck]

From prior posting and the problems described in other sites I think their manufacturing systems were not strict enough. Measuring small amounts are electrolyte is a pain and unless they are holding it to three places then maintaining consistency would be difficult. Also the electrolyte solution needs to be tested on regular basis for consistent results. When you start stacking the variables it's a pain in the rear end.

Considering all electronics are reading oxygen sensors the manufacturing needs to be as tight as they can get.

Other divers also had good points that we should be using the plug in style verses exposed wires. I have been thinking about making connections and then sealing them to reduce corrosion.

Testing cells at 15ft has been the only really way we have had good results. Plus, watching for anomalies such has the sensor jumping high, or falling off before they crash.

[amphipod06]

I'm keeping my fingers crossed.

AI cells have been pretty much crap, every single one of them. I appreciate Mark's customer's service and warranty on them but even the ones that I got as replacements have been so flaky that out of disgust I swore I would not use them again.

I guess I am up the proverbial creek, curse eegits and their lawsuits!!

Dive safe,

Celia

[FW]

From prior posting and the problems described in other sites I think their manufacturing systems were not strict enough. Measuring small amounts are electrolyte is a pain and unless they are holding it to three places then maintaining consistency would be difficult. Also the electrolyte solution needs to be tested on regular basis for consistent results. When you start stacking the variables it's a pain in the rear end......

If anyone thinks todays cells are bad, they should read about the problems the early rebreathers had. In the early 70s, when the first "elecronic" rebreathers came out, they were nicknamed "chrome death" because of all the bad readings.

It wasn't until Teledyne sensors came out that rebreathers were considered more or less "safe". It is no surprise that most comercisl units use three sensors.