O2 cells falling apart - bad batch?

n2diving · 29th March 2007, 20:19

Quote: (Originally Posted by AD_ward9)

Teledyne sensors failed many of the tests in the report with a lot of quality control issues. We had things like sensors that should be 8s response time being 50s, leaking issues, early failures, etc.

I can certainly agree with Alex on his observations.... after selling the Teledyne R-22D (under the Dive Rite Express part number R-22DR) for some time and getting disgusted with the quality control of the Teledyne product, I sampled the AI equivalent sensor.... and we tested extensively in the O2ptima's,
were much happier and switched to the AI sensor (that's the black one)... it's quality control is much better... see this link for pictures....

My personal opinion is the quality control problems at Teledyne began when they exported production out of their US facility to Mexico.
-- Mark

seppu · 29th March 2007, 20:26

Quote: (Originally Posted by Danil)

Maybe i´m the odd one here but i have tried 2 AI sensors and in a 3months period they did fall out of mv range, rather quickly in the end...

Don´t trust your sensors whatever brand they are, but you all probably knew that...

hai
same same 3 ai sensors 18 months old unused and unopenend.now 0,2-0,3 milli volt.

gruss sepp

DepthCharge · 29th March 2007, 23:24

Quote: (Originally Posted by Danil)

Don´t trust your sensors whatever brand they are, but you all probably knew that...

Probably the best advice.

AD_ward9 · 30th March 2007, 14:38

Quote: (Originally Posted by PacketSniffer)

Wow. Excellent.

When will you have the PSR-11-39-MD with SMB connectors?

It is called the PSR-11-39-DC. Just order them.

On sensors failing, AI implemented improvements to the sensors for diving as a result of this study, to make the cells more robust. That was the only real area we identified as needing improvement. All the -DC cells have this improvement, and if you are buying -MDs, request it with the Deep Life improvement.

Pls PM me if you have any quality problems with these: we are monitoring the situation running forwards and would like to know.

Alex

PacketSniffer · 30th March 2007, 15:59

Quote: (Originally Posted by AD_ward9)

It is called the PSR-11-39-DC. Just order them.

Ah. Thanks!

teksimple · 30th March 2007, 17:04

Quote: (Originally Posted by AD_ward9)

It is called the PSR-11-39-DC. Just order them.

Easier said than done. Yes, AII has finalized the design for the PSR-11-39-DC, but they have yet to begin production. To be sure, CCRsense will begin stocking them as soon as they come out of the QC checks at the Pomona production facility. Will keep Rebreather World posted.

teksimple · 30th March 2007, 20:48

Quote: (Originally Posted by seppu)

hai
same same 3 ai sensors 18 months old unused and unopenend.now 0,2-0,3 milli volt.

gruss sepp

FYI, O2 sensors that are NOT exposed to O2 for long periods of time may be worse than opened ones! This is a known fact because the galvanic material becomes "O2 starved" and the anode/cathode path becomes unstable*. 18 months? Who told you that O2 sensors would be good if left unopened for 18 months?

*caused by the evaporation of the water that carries the potassium hydroxide electrolyte as as per Alex's study.

***schford*** · 30th March 2007, 21:04

The manufacturers

n2diving · 30th March 2007, 22:51

Well.... yes the mfg say 24 months in the bag (it even says so on my website where I'm selling the things but

).... and I would faithfully carry a spare in my spares kit, I can't say that I ever opened one that had been rattling around in the bag a year or two and had it work...

teksimple · 31st March 2007, 01:19

Quote: (Originally Posted by schford)

The manufacturers

oops, uh...
where is the icon for open mouth insert foot?

29th March 2007, 20:19	#21 (permalink)
n2diving Custom Title Allowed! Current Rebreather/s: Optima Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Feb 2005 Location: Florida, USA Posts: 272	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by AD_ward9) Teledyne sensors failed many of the tests in the report with a lot of quality control issues. We had things like sensors that should be 8s response time being 50s, leaking issues, early failures, etc. I can certainly agree with Alex on his observations.... after selling the Teledyne R-22D (under the Dive Rite Express part number R-22DR) for some time and getting disgusted with the quality control of the Teledyne product, I sampled the AI equivalent sensor.... and we tested extensively in the O2ptima's, were much happier and switched to the AI sensor (that's the black one)... it's quality control is much better... see this link for pictures.... My personal opinion is the quality control problems at Teledyne began when they exported production out of their US facility to Mexico. -- Mark Last edited by schford : 29th March 2007 at 20:50. Reason: no links to online stores without sponsoring site
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29th March 2007, 20:26	#22 (permalink)
seppu i ko nix dafüa Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2006 Location: bayern Posts: 193	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by Danil) Maybe i´m the odd one here but i have tried 2 AI sensors and in a 3months period they did fall out of mv range, rather quickly in the end... Don´t trust your sensors whatever brand they are, but you all probably knew that... hai same same 3 ai sensors 18 months old unused and unopenend.now 0,2-0,3 milli volt. gruss sepp
(Online)

29th March 2007, 23:24	#23 (permalink)
DepthCharge New Member Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Home Build Join Date: Mar 2005 Location: upstate NY Posts: 232	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by Danil) Don´t trust your sensors whatever brand they are, but you all probably knew that... Probably the best advice. __________________ Later, John It's better to beg forgiveness than ask permission
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30th March 2007, 14:38	#24 (permalink)
AD_ward9 So much more to learn Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 1,862	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by PacketSniffer) Wow. Excellent. When will you have the PSR-11-39-MD with SMB connectors? It is called the PSR-11-39-DC. Just order them. On sensors failing, AI implemented improvements to the sensors for diving as a result of this study, to make the cells more robust. That was the only real area we identified as needing improvement. All the -DC cells have this improvement, and if you are buying -MDs, request it with the Deep Life improvement. Pls PM me if you have any quality problems with these: we are monitoring the situation running forwards and would like to know. Alex Last edited by AD_ward9 : 30th March 2007 at 14:52.
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30th March 2007, 15:59	#25 (permalink)
PacketSniffer ~~~~~ #417 ~~~~~ Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jun 2006 Location: Houston Posts: 437	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by AD_ward9) It is called the PSR-11-39-DC. Just order them. Ah. Thanks! __________________ Far better it is to dare mighty things, to win glorious triumphs, even though checked by failure, than to take rank with those poor spirits who neither enjoy much nor suffer much, because they live in the gray twilight that knows not victory or defeat.
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30th March 2007, 17:04	#26 (permalink)
teksimple Enlightened Alpinist Current Rebreather/s: MK 15.X Other Rebreather/s: Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Back in Hawaii Posts: 503	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by AD_ward9) It is called the PSR-11-39-DC. Just order them. Easier said than done. Yes, AII has finalized the design for the PSR-11-39-DC, but they have yet to begin production. To be sure, CCRsense will begin stocking them as soon as they come out of the QC checks at the Pomona production facility. Will keep Rebreather World posted. __________________ ---- _____________ "I don't know the percentage of the Internet that's valid, do you? Jesus, it's scary." - Hunter S. Thompson Last edited by teksimple : 30th March 2007 at 20:44.
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30th March 2007, 20:48	#27 (permalink)
teksimple Enlightened Alpinist Current Rebreather/s: MK 15.X Other Rebreather/s: Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Back in Hawaii Posts: 503	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by seppu) hai same same 3 ai sensors 18 months old unused and unopenend.now 0,2-0,3 milli volt. gruss sepp FYI, O2 sensors that are NOT exposed to O2 for long periods of time may be worse than opened ones! This is a known fact because the galvanic material becomes "O2 starved" and the anode/cathode path becomes unstable. 18 months? Who told you that O2 sensors would be good if left unopened for 18 months? caused by the evaporation of the water that carries the potassium hydroxide electrolyte as as per Alex's study. __________________ ---- _____________ "I don't know the percentage of the Internet that's valid, do you? Jesus, it's scary." - Hunter S. Thompson Last edited by teksimple : 31st March 2007 at 02:09.
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30th March 2007, 21:04	#28 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,559	Re: O2 cells falling appart - bad batch? The manufacturers __________________ Bailout and Kit Management account for Murphy's Law The only bad question is one you did not ask and later wish you had. Use of Rebreather World is subject to the Rebreather World Terms & Conditions of Use
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30th March 2007, 22:51	#29 (permalink)
n2diving Custom Title Allowed! Current Rebreather/s: Optima Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Feb 2005 Location: Florida, USA Posts: 272	Re: O2 cells falling appart - bad batch? Well.... yes the mfg say 24 months in the bag (it even says so on my website where I'm selling the things but ).... and I would faithfully carry a spare in my spares kit, I can't say that I ever opened one that had been rattling around in the bag a year or two and had it work...
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31st March 2007, 01:19	#30 (permalink)
teksimple Enlightened Alpinist Current Rebreather/s: MK 15.X Other Rebreather/s: Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Back in Hawaii Posts: 503	Re: O2 cells falling appart - bad batch? Quote: (Originally Posted by schford) The manufacturers oops, uh... where is the icon for open mouth insert foot? __________________ ---- _____________ "I don't know the percentage of the Internet that's valid, do you? Jesus, it's scary." - Hunter S. Thompson
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