Cell Linearity

**Gill Envy** · 24th November 2006, 23:10

Quote: (Originally Posted by schford)

I am just a bit concerned that we are diluting the informaiton in here as Alex pointed out earlier.

Stuart,

As i generally browse over "new posts" and don't use the search tool much. i'm unclear as to if there is a repository of salient threads or portions of threads that get archived for future reference and easy identifyication. fighting the "dillution" of valuable information seems to be quite a challenge, and I can see how being put in the position to have to make the call of what is valuable would be really dicey. Is there an effort to condense and compile the top rated threads, or even more specifically to rate individual posts for a sort of star rating search or something?...sorry i'm not being more clear, but i think you can get my drift.

***schford*** · 25th November 2006, 07:31

The short answer is other than the library - no.

The long answer is well a bit long but the information is catagorisied into funcitonal areas we try and keep on top of.

Stuart

***sadave*** · 25th November 2006, 08:10

Quote: (Originally Posted by schford)

I dont think any one is going to convince anyone on this thread and it is wayyyyyy off topic - any mods fancy splitting it and trying to pop it into the Open Revolution forum some where.

I am just a bit concerned that we are diluting the informaiton in here as Alex pointed out earlier.

Quiet saturday night at work, I'm bored, so consider it done.

It's here... http://www.rebreatherworld.com/open-...-mtbf-etc.html Stu, email me at work or PM me if I've missed any / moved too many posts etc...

Cheers, CD

RonMicjan · 25th November 2006, 16:51

Quote: (Originally Posted by Genesis)

Agreed....

let us all celebrate Karl's shortest post to date

keep up the good work buddy!

AD_ward9 · 30th November 2006, 22:18

Just to keep the thread informed on the O2 Sensor Report promised.

After reviewing the results in the draft report, one of the sensor companies has implemented some improvements to address several points we raised and we expect to receive a batch of the improved sensors next week. We will retest these before we publish the results. The test involved does not take long and will have the results within a few weeks further (most of this is shipping things here, then to Russia with their Customs).

The test schedule we published contains the requirements we concluded for dive applications: it does require performance outside the range needed for medical purposes - rebreathers are a harsher environment than an operating theatre. There are two areas in particular, where companies addressing the dive market are working on: temperature range (Rebreather in tropics being pre-breathed produces a very warm exhaust from the scrubber onto the O2 sensors), and shock.

The worst case real requirement for shock resistance comes from the use of RIBs to transport divers. We use a 1.5m and 3m drop test to simulate the effect of transporting a Rebreather on the floor of a RIB. There are two cases where this level of shock occurs, the first being around Scotland in this weather (in Scotland there is club diving in waves up to 3m: I know it sounds crazy if you are from somewhere else in the world, but the limit is 3m just because more than that it is too hard to find the diver's SMB - the RIB is driven very slowly), but surprisingly the second case is small waves at speed in a RIB which in fact produce similar levels of shock, so this environment is much more common than it first sounds. We are discussing improvements to the sensors so they can withstand shock better, and if we receive a batch with that improvement implemented, then it could be mid January before the report gets published onto this forum.

The important news is that NDA issues are now overcome and it will be published. It is only fair that the data reflects the current products the companies are supplying the dive market with, at the date the report is published or close to it.

Cheers,

Alex

***ScubaDadMiami*** · 1st December 2006, 03:02

Quote: (Originally Posted by RonMicjan)

let us all celebrate Karl's shortest post to date

keep up the good work buddy!

Actually, Karl is a nice guy in person. However, your sense of humor is still worth some green.

***schford*** · 1st December 2006, 12:38

Keep up the great work alex - looking forward to seeing the results!

24th November 2006, 23:10	#71 (permalink)
Gill Envy Shearwater Copis Divers Current Rebreather/s: Other CCR Other Rebreather/s: Evolution Other CCR Join Date: Nov 2005 Location: seattle Posts: 1,314	Re: Cell Linearity Quote: (Originally Posted by schford) I am just a bit concerned that we are diluting the informaiton in here as Alex pointed out earlier. Stuart, As i generally browse over "new posts" and don't use the search tool much. i'm unclear as to if there is a repository of salient threads or portions of threads that get archived for future reference and easy identifyication. fighting the "dillution" of valuable information seems to be quite a challenge, and I can see how being put in the position to have to make the call of what is valuable would be really dicey. Is there an effort to condense and compile the top rated threads, or even more specifically to rate individual posts for a sort of star rating search or something?...sorry i'm not being more clear, but i think you can get my drift. __________________ Gill Envy ...Because I wasn't born with gills! ><(°>><(°>><(°>><(°>><(°>><(°>><(°>><(°>
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25th November 2006, 07:31	#72 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,562	Re: Cell Linearity The short answer is other than the library - no. The long answer is well a bit long but the information is catagorisied into funcitonal areas we try and keep on top of. Stuart __________________ 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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25th November 2006, 08:10	#73 (permalink)
*sadave* Waiting... Current Rebreather/s: Sport Kiss Other Rebreather/s: Not Bought Yet Classic Kiss Join Date: Jun 2005 Location: Brisbane, Queensland Posts: 1,041	Re: Cell Linearity Quote: (Originally Posted by schford) I dont think any one is going to convince anyone on this thread and it is wayyyyyy off topic - any mods fancy splitting it and trying to pop it into the Open Revolution forum some where. I am just a bit concerned that we are diluting the informaiton in here as Alex pointed out earlier. Quiet saturday night at work, I'm bored, so consider it done. It's here... http://www.rebreatherworld.com/open-...-mtbf-etc.html Stu, email me at work or PM me if I've missed any / moved too many posts etc... Cheers, CD __________________ Wave!
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25th November 2006, 16:51	#74 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,100	Re: Cell Linearity Quote: (Originally Posted by Genesis) Agreed.... let us all celebrate Karl's shortest post to date keep up the good work buddy! __________________ Marine rescue, towing and salvage. Interfering with natural selection since 1983. www.tmishop.com Diving bits etc. www.seatowpdx.com The Summer Job
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30th November 2006, 22:18	#75 (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: Cell Linearity Just to keep the thread informed on the O2 Sensor Report promised. After reviewing the results in the draft report, one of the sensor companies has implemented some improvements to address several points we raised and we expect to receive a batch of the improved sensors next week. We will retest these before we publish the results. The test involved does not take long and will have the results within a few weeks further (most of this is shipping things here, then to Russia with their Customs). The test schedule we published contains the requirements we concluded for dive applications: it does require performance outside the range needed for medical purposes - rebreathers are a harsher environment than an operating theatre. There are two areas in particular, where companies addressing the dive market are working on: temperature range (Rebreather in tropics being pre-breathed produces a very warm exhaust from the scrubber onto the O2 sensors), and shock. The worst case real requirement for shock resistance comes from the use of RIBs to transport divers. We use a 1.5m and 3m drop test to simulate the effect of transporting a Rebreather on the floor of a RIB. There are two cases where this level of shock occurs, the first being around Scotland in this weather (in Scotland there is club diving in waves up to 3m: I know it sounds crazy if you are from somewhere else in the world, but the limit is 3m just because more than that it is too hard to find the diver's SMB - the RIB is driven very slowly), but surprisingly the second case is small waves at speed in a RIB which in fact produce similar levels of shock, so this environment is much more common than it first sounds. We are discussing improvements to the sensors so they can withstand shock better, and if we receive a batch with that improvement implemented, then it could be mid January before the report gets published onto this forum. The important news is that NDA issues are now overcome and it will be published. It is only fair that the data reflects the current products the companies are supplying the dive market with, at the date the report is published or close to it. Cheers, Alex Last edited by AD_ward9 : 30th November 2006 at 23:50.
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1st December 2006, 03:02	#76 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,132	Re: Cell Linearity Quote: (Originally Posted by RonMicjan) let us all celebrate Karl's shortest post to date keep up the good work buddy! Actually, Karl is a nice guy in person. However, your sense of humor is still worth some green. __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com
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1st December 2006, 12:38	#77 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,562	Re: Cell Linearity Keep up the great work alex - looking forward to seeing the results! __________________ 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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