Sentinel LSS - Trip Report

Crispey · 29th March 2008, 16:01

Hi Guys,
So why not build in a carbon dioxide detector - it would solve some significant issues? Too simplistic?
Crispy

paulraymaekers · 30th March 2008, 17:05

Quote: (Originally Posted by tecdivertraining)

Hi paul

on all Mix courses I have students remove their scrubbers and breath from their units obviously with the O2 on and wearing a mask I have yet to have one detect CO2 before 5 mins. try it and let me know how you go.

matt, you said 10, and not 5 :-)

and remember: under water it is the PPCO2 that counts, not the %

paul

ps: I have done that test before, and it does not take me 5 minutes to detect the higher CO2 in the loop: after less then 2 minutes I notice my breathing is different

Marvintpa · 30th March 2008, 17:14

Time to split this into a different thread?

tecdivertraining · 31st March 2008, 01:44

Quote: (Originally Posted by paulraymaekers)

matt, you said 10, and not 5 :-)

and remember: under water it is the PPCO2 that counts, not the %

paul

ps: I have done that test before, and it does not take me 5 minutes to detect the higher CO2 in the loop: after less then 2 minutes I notice my breathing is different

Paul I know what I said, I was implying the 5 minute pre-breathe is not long enough as breakthrough takes longer, only in my opinion, for me up-to 10 minutes and over a dozen other CCR divers who did the test with me

.

I fully understand that its the PPCO2 that counts underwater and the detection would be faster but the idea of the check is not to find out in the water, so whats that got to do with the post.

ch3micaldud3 · 31st March 2008, 10:32

Quote: (Originally Posted by Marvintpa)

Time to split this into a different thread?

My opinion exactly

If you guys get back from the trip, and find the time to write something here, please do so...

Peter M · 31st March 2008, 10:33

Just a few brief words for now,
After a week on the first Sentinel course i have passed my Mod 1.
The instructors in the water for us newbies were:- Greg Such, Phil Short, Phil Sudan, These three guys were outstanding, i never had an uncomfortable moment at all.
Onboard all the instructors under training were also great during lectures.
Kevin, Al and Phil from CCRB had always an answer for all questions no matter how stupid, and they also listened to our comments and suggestions.
The unit never missed a dive all week for anyone.
Judging by the reaction of most people on the boat it was well recieved and well built, there was a few minor problems which Kevin had his people on by the third day.
Never having dived another rebreather i cant compare, but i can say in my opinion i did spend my money very very well

Now i must go and clean the unit down and get ready for the coming weekend in the shallows.

smcmullan · 31st March 2008, 12:21

Well done Peter! I wish you safe dives. I'm sure I'll be running into you up in Malin, Strangford or Ballycastle quite soon.

cheers, Stephen

Peter M · 31st March 2008, 12:26

Thanks Stephen, the next few hours are going to be learning more about the unit and getting the drills into my head even more.

Eoin · 31st March 2008, 12:41

Congrats Peter, I'm really looking forward to seeing one of these units "in the flesh". Keep us posted on your progress and thoughts on the unit.

smcmullan · 31st March 2008, 13:41

Mind you Eoin looking at those photos above we may have to help Peter with his MOD1.25 to acclimatise to Irish conditions at the moment. There was a pretty spectacular electrical storm after you left yesterday and our dive gear got covered with hail/sleet. We managed to get back in for the second dive right on full flow mid tide in the 7degC water. Mind you the viz was superb could almost see 3m (2.5m more than usual)

Enjoy Egypt while you can Peter.

29th March 2008, 16:01	#51 (permalink)
Crispey New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Oct 2007 Location: Midlands,UK Posts: 6	Re: Sentinel LSS - Trip Report Hi Guys, So why not build in a carbon dioxide detector - it would solve some significant issues? Too simplistic? Crispy
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30th March 2008, 17:05	#52 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,501	Re: Sentinel LSS - Trip Report Quote: (Originally Posted by tecdivertraining) Hi paul on all Mix courses I have students remove their scrubbers and breath from their units obviously with the O2 on and wearing a mask I have yet to have one detect CO2 before 5 mins. try it and let me know how you go. matt, you said 10, and not 5 :-) and remember: under water it is the PPCO2 that counts, not the % paul ps: I have done that test before, and it does not take me 5 minutes to detect the higher CO2 in the loop: after less then 2 minutes I notice my breathing is different __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
(Online)

30th March 2008, 17:14	#53 (permalink)
Marvintpa Bad knees, matching brain Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: Ontario, Canada Posts: 265	Re: Sentinel LSS - Trip Report Time to split this into a different thread?
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31st March 2008, 01:44	#54 (permalink)
tecdivertraining RebreatherWorld Sponsor Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Ouroboros Dolphin Other Rebreather/s: Not Bought Yet Dolphin Join Date: May 2005 Location: Phuket, Thailand Posts: 462	Re: Sentinel LSS - Trip Report Quote: (Originally Posted by paulraymaekers) matt, you said 10, and not 5 :-) and remember: under water it is the PPCO2 that counts, not the % paul ps: I have done that test before, and it does not take me 5 minutes to detect the higher CO2 in the loop: after less then 2 minutes I notice my breathing is different Paul I know what I said, I was implying the 5 minute pre-breathe is not long enough as breakthrough takes longer, only in my opinion, for me up-to 10 minutes and over a dozen other CCR divers who did the test with me. I fully understand that its the PPCO2 that counts underwater and the detection would be faster but the idea of the check is not to find out in the water, so whats that got to do with the post. __________________ Mathew Partridge Technical Director Pro-Tech Dive College www.protechdivers.com www.tech-ccr.com
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31st March 2008, 10:32	#55 (permalink)
ch3micaldud3 New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Nov 2007 Location: Belgium, Vlaams Brabant Posts: 15	Re: Sentinel LSS - Trip Report Quote: (Originally Posted by Marvintpa) Time to split this into a different thread? My opinion exactly If you guys get back from the trip, and find the time to write something here, please do so... __________________ OC Adv Rec Tx Instructor & CC Sentinel Diver
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31st March 2008, 10:33	#56 (permalink)
Peter M New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2007 Location: Northern Ireland Posts: 52	Re: Sentinel LSS - Trip Report Just a few brief words for now, After a week on the first Sentinel course i have passed my Mod 1. The instructors in the water for us newbies were:- Greg Such, Phil Short, Phil Sudan, These three guys were outstanding, i never had an uncomfortable moment at all. Onboard all the instructors under training were also great during lectures. Kevin, Al and Phil from CCRB had always an answer for all questions no matter how stupid, and they also listened to our comments and suggestions. The unit never missed a dive all week for anyone. Judging by the reaction of most people on the boat it was well recieved and well built, there was a few minor problems which Kevin had his people on by the third day. Never having dived another rebreather i cant compare, but i can say in my opinion i did spend my money very very well Now i must go and clean the unit down and get ready for the coming weekend in the shallows.
(Offline)

31st March 2008, 12:21	#57 (permalink)
smcmullan New Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: Jul 2006 Location: Dun Laoghaire, Co. Dublin, Ireland Posts: 15	Re: Sentinel LSS - Trip Report Well done Peter! I wish you safe dives. I'm sure I'll be running into you up in Malin, Strangford or Ballycastle quite soon. cheers, Stephen
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31st March 2008, 12:26	#58 (permalink)
Peter M New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2007 Location: Northern Ireland Posts: 52	Re: Sentinel LSS - Trip Report Thanks Stephen, the next few hours are going to be learning more about the unit and getting the drills into my head even more.
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31st March 2008, 12:41	#59 (permalink)
Eoin New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Classic Join Date: Nov 2005 Location: Ireland Posts: 56	Re: Sentinel LSS - Trip Report Congrats Peter, I'm really looking forward to seeing one of these units "in the flesh". Keep us posted on your progress and thoughts on the unit. __________________ Ta, Eoin ~~~~~~~~~ www.scuba.ie www.technicaldiving.ie
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31st March 2008, 13:41	#60 (permalink)
smcmullan New Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: Jul 2006 Location: Dun Laoghaire, Co. Dublin, Ireland Posts: 15	Re: Sentinel LSS - Trip Report Mind you Eoin looking at those photos above we may have to help Peter with his MOD1.25 to acclimatise to Irish conditions at the moment. There was a pretty spectacular electrical storm after you left yesterday and our dive gear got covered with hail/sleet. We managed to get back in for the second dive right on full flow mid tide in the 7degC water. Mind you the viz was superb could almost see 3m (2.5m more than usual) Enjoy Egypt while you can Peter.
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