Age of "purchased new" cells?

**PhilSiswick** · 2nd April 2008, 10:53

Quote: (Originally Posted by jptaylor9)

This contradicts the advise from Martin Parker at APD, take a look at his training video. Cells are one item on a Rebreather that I'd rather not push... guess we'd better ask Alex for his expert advise

It's also pretty clear in the Vision manual (3.5.2 in the version I have).

Cheers,

Ben Field · 2nd April 2008, 11:03

Thanks for all the info here on and by PM from various folk... for once a concensus of sorts!

***jradomski*** · 2nd April 2008, 11:04

Quote: (Originally Posted by jptaylor9)

This contradicts the advise from Martin Parker at APD, take a look at his training video. Cells are one item on a Rebreather that I'd rather not push... guess we'd better ask Alex for his expert advise

There is a difference between used and unused cells especially when stored correctly.. Teledyne who manufacturer's the cells specifies it as a 24 month shelf life..

The cells should be regularly tested for response, linearity and output limiting... If you can't or don't know how to evaulate the cells then you shouldn't use them.. I might agree with APs video using BUD cells since they open the cells and I'm not sure if they take the same packaging precautions as Teledyne takes when originally shipping a product.. I don't use AP branded cells for this reason.

Teledyne branded cells have a 24 month warranty..

Tienuts · 2nd April 2008, 13:51

Just make sure you date them and keep a log. Seems like common sense, but I have seen many customer's who have no idea when they installed what cell. I have litteraly seen customers walk in with a head, and say they don't know why their handsets wouldn't pass calibration. When I look at the cells, I see date ranges all over the place. When I ask when they were installed, they shrug.

**Fun Under Pressure** · 3rd April 2008, 07:59

At the end of January i ordered Cells from DRE, got 4 with date of production January 2008. Great..

Cheers Markku

__________________________________________________ _______________

"DIR is the nanny state for divers who cannot think on their own" Ron Micjan

Dinspiration · 3rd April 2008, 11:57

Did you order Teledyne or AI Cells?

Quote: (Originally Posted by Fun Under Pressure)

At the end of January i ordered Cells from DRE, got 4 with date of production January 2008. Great..

Cheers Markku

__________________________________________________ _______________

"DIR is the nanny state for divers who cannot think on their own" Ron Micjan

Ben Field · 3rd April 2008, 12:33

Funny follow up....

Removed the existing cells from my CK last night, installed by me 18months ago when I purchased the unit, supplied with it as a "new" set, was a shade greener at the time and just put them in without looking.

The (still working) cells coming out are plain R22D's dated F5 (June 2005) So where older when I installed them (November 2006) than the set of R22-2BUD's I'm now stressing over

One could say "Ignorance is bliss" but thats not really the point...

FWIW I emailed/called a couple of other suppliers, for the BUD's no one had anything newer than mine.

TheBcDiver · 3rd April 2008, 16:40

Just seen this thread and it prompted me to check my "new" cells. Bought them in November 07 and they are date stamped H7 (August 07) put them into the unit in Jan 08 so it's easy to remember when to change them again....providing i remember that i changed them in January

firemandiver · 4th April 2008, 03:13

For what it's worth.......I got new cells from Oxycheq in October. When I ordered they were in the process of getting a new batch in and I had to wait about a week to get them. When they arrived my sensors had a production date that was three days old! Can't get any fresher if you grow'em yourself. FD

**PhilSiswick** · 4th April 2008, 10:37

Quote: (Originally Posted by TheBcDiver)

Just seen this thread and it prompted me to check my "new" cells. Bought them in November 07 and they are date stamped H7 (August 07) put them into the unit in Jan 08 so it's easy to remember when to change them again....providing i remember that i changed them in January

Get an thin permanent marker and write the install date (I use the same date code as the cells) on the cell. Then you don't need to remember....

Cheers,

2nd April 2008, 10:53	#11 (permalink)
PhilSiswick WSKD 0001 Current Rebreather/s: Evolution Other Rebreather/s: Inspiration Vision Join Date: Apr 2006 Location: Oxford, UK Posts: 884	Re: Age of "purchased new" cells? Quote: (Originally Posted by jptaylor9) This contradicts the advise from Martin Parker at APD, take a look at his training video. Cells are one item on a Rebreather that I'd rather not push... guess we'd better ask Alex for his expert advise It's also pretty clear in the Vision manual (3.5.2 in the version I have). Cheers, __________________ Phil No comment on open circuit... it's an evolutionary dead end not really worth discussing here. Dave Sutton, 2007 I have always felt that the dive I am on is not nearly important as the dives I plan to be on the rest of my life. Tom Rose, 2007 www.hugsac.org.uk
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2nd April 2008, 11:03	#12 (permalink)
Ben Field CK+Shearwater Current Rebreather/s: Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2005 Location: London, England Posts: 1,486	Re: Age of "purchased new" cells? Thanks for all the info here on and by PM from various folk... for once a concensus of sorts! __________________ www.hugsac.org.uk Beware Fridge Suck
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2nd April 2008, 11:04	#13 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,817	Re: Age of "purchased new" cells? Quote: (Originally Posted by jptaylor9) This contradicts the advise from Martin Parker at APD, take a look at his training video. Cells are one item on a Rebreather that I'd rather not push... guess we'd better ask Alex for his expert advise There is a difference between used and unused cells especially when stored correctly.. Teledyne who manufacturer's the cells specifies it as a 24 month shelf life.. The cells should be regularly tested for response, linearity and output limiting... If you can't or don't know how to evaulate the cells then you shouldn't use them.. I might agree with APs video using BUD cells since they open the cells and I'm not sure if they take the same packaging precautions as Teledyne takes when originally shipping a product.. I don't use AP branded cells for this reason. Teledyne branded cells have a 24 month warranty.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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2nd April 2008, 13:51	#14 (permalink)
Tienuts The man from Nantucket Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2007 Location: Fort Lauderdale Posts: 149	Re: Age of "purchased new" cells? Just make sure you date them and keep a log. Seems like common sense, but I have seen many customer's who have no idea when they installed what cell. I have litteraly seen customers walk in with a head, and say they don't know why their handsets wouldn't pass calibration. When I look at the cells, I see date ranges all over the place. When I ask when they were installed, they shrug.
(Online)

3rd April 2008, 07:59	#15 (permalink)
Fun Under Pressure Supporting Member Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Join Date: Nov 2006 Location: Germany Posts: 594	Re: Age of "purchased new" cells? At the end of January i ordered Cells from DRE, got 4 with date of production January 2008. Great.. Cheers Markku __________________________________________________ _______________ "DIR is the nanny state for divers who cannot think on their own" Ron Micjan
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3rd April 2008, 11:57	#16 (permalink)
Dinspiration Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Other CCR Join Date: Dec 2005 Location: Switzerland Posts: 197	Re: Age of "purchased new" cells? Did you order Teledyne or AI Cells? Quote: (Originally Posted by Fun Under Pressure) At the end of January i ordered Cells from DRE, got 4 with date of production January 2008. Great.. Cheers Markku __________________________________________________ _______________ "DIR is the nanny state for divers who cannot think on their own" Ron Micjan
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3rd April 2008, 12:33	#17 (permalink)
Ben Field CK+Shearwater Current Rebreather/s: Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2005 Location: London, England Posts: 1,486	Re: Age of "purchased new" cells? Funny follow up.... Removed the existing cells from my CK last night, installed by me 18months ago when I purchased the unit, supplied with it as a "new" set, was a shade greener at the time and just put them in without looking. The (still working) cells coming out are plain R22D's dated F5 (June 2005) So where older when I installed them (November 2006) than the set of R22-2BUD's I'm now stressing over One could say "Ignorance is bliss" but thats not really the point... FWIW I emailed/called a couple of other suppliers, for the BUD's no one had anything newer than mine. __________________ www.hugsac.org.uk Beware Fridge Suck
(Offline)

3rd April 2008, 16:40	#18 (permalink)
TheBcDiver New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Aug 2006 Location: Co. Antrim Posts: 36	Re: Age of "purchased new" cells? Just seen this thread and it prompted me to check my "new" cells. Bought them in November 07 and they are date stamped H7 (August 07) put them into the unit in Jan 08 so it's easy to remember when to change them again....providing i remember that i changed them in January
(Offline)

4th April 2008, 03:13	#19 (permalink)
firemandiver Let's Go Diving! Current Rebreather/s: Dolphin Home Build Other Rebreather/s: Dolphin Home Build Join Date: Sep 2007 Location: gulfport, ms Posts: 122	Re: Age of "purchased new" cells? For what it's worth.......I got new cells from Oxycheq in October. When I ordered they were in the process of getting a new batch in and I had to wait about a week to get them. When they arrived my sensors had a production date that was three days old! Can't get any fresher if you grow'em yourself. FD
(Online)

4th April 2008, 10:37	#20 (permalink)
PhilSiswick WSKD 0001 Current Rebreather/s: Evolution Other Rebreather/s: Inspiration Vision Join Date: Apr 2006 Location: Oxford, UK Posts: 884	Re: Age of "purchased new" cells? Quote: (Originally Posted by TheBcDiver) Just seen this thread and it prompted me to check my "new" cells. Bought them in November 07 and they are date stamped H7 (August 07) put them into the unit in Jan 08 so it's easy to remember when to change them again....providing i remember that i changed them in January Get an thin permanent marker and write the install date (I use the same date code as the cells) on the cell. Then you don't need to remember.... Cheers, __________________ Phil No comment on open circuit... it's an evolutionary dead end not really worth discussing here. Dave Sutton, 2007 I have always felt that the dive I am on is not nearly important as the dives I plan to be on the rest of my life. Tom Rose, 2007 www.hugsac.org.uk
(Offline)

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