Duration on the new EP Extendair cartridges?

dave t

Paul

the temp stik is a collection of thermistors imbedded in the rod that runs the whole length of the cannister, if what you say is true why do they all light up on a fresh scrubber? according to what you say the reaction on a new scrubber should only be at the beginning. It would appear that this is not the case if you belive what the tempstik is telling you

best

Dave

paulraymaekers

dave: you don't see the increase in temp between every thermistor, the bar is just an visualisation of what's left to use!
I do know temp sticks: I even used one on my old IDA71 to collect data for scrubberprediction

and if at the beginning of a dive a scrubber is warming up, even more at the inlet then at the outlet (at the start of a dive you get an inverse temp graph: warmer at the inlet comp to outlet): this means first you warm up the scrubber by your exhaled gas, only after short time you detect an increase in temp from inlet to outlet, where the active zone is!

regards
paul

I'll try to transmit a graph to genesis :-)

__________________
www.rEvo-rebreathers.com

.... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...

CCRDVR

I've got 105 dives using cartridges in my Draeger Dolphin SCR. I usually did about 3 and a half hours per cartridge (74 degree water). I tried going for four hours once and found that my breathing rate had increased significantly. So I think it is best to follow the Diverite/Micropore guidelines. Now I stick to 3 and a half hours max. I just received my O2ptima yesterday and am awaiting better weather to dive it. The production unit is a bit different than the prototype Optima I trained on (more refined). It's a nice and tight unit. If anyone is interested in a used Draeger Dolphin setup with the Micropore cartridge canister mod, let me know. This include the Oxy02 (o2 sensors) and the ZO2 wrist unit.

Genesis

I emailed him back a converted version of the graph.....

__________________
"A venturesome minority will always be eager to get off on their own, and no obstacles should be placed in their path; let them take risks for Godsake, let them get lost, sunburnt, stranded, drowned, eaten by bears, buried alive under avalanches - that is the right and privilege of any free American."
http://www.denninger.net
http://www.diversunion.org/liability.htm - Fix the Diving Cert racket