The point made was that being made was the Apoc is less than $1000 US, when in reality this is not the case.
Great Marketing Ploy to suck you in, already I have my guard up..
Sorry, but in reality the Long Case Apocalypse mCCR (with a WOB of 1.38J/L) is currently
US$995 opensafety.eu / Sports Diving / Rebreathers , download the datasheet to see everything that is included: ALVBOV, harness, wing, o2 cylinder, O2 integrated valve, diluent 1st stage, shipping case, manual add valve etc etc
What is additional is electronics, where you have the choice of the OS Rebreather Monitor which includes Co2 as well as PPo2 monitoring for US$1490 (it will even tell you your decompression obligation or helium content of your loop) or going aftermarket and getting an eCCR 'Occams Razor' Apocalypse head for GBP2k or down the track something HammerHead from J.M. or something X1.
Note Well here, the weakest point in any RB is the cells used and already the APOC has added a few more into the mix.
I guess that is the reason why O.R. rebreathers don't use temp compensation on the Oxygen Cells, and instead incorporate it in the Rebreather Monitor, which allows the diver to still know his PPo2 with only 1 in 3 Oxygen Cells working.....
It might interest you to look at this 6 year Oxygen Cell study DeepLife did deeplife.co.uk/or_dv.php 4th link down
This was to be resolved when the Optima arrived. The price will not go down, despite the manufacturer being the biggest and probably the only supplier of military organisations in the world, this has been advised by the supplier here in Oz.
Lets see, currently 400-500 odd Optima's, first batch of Apoc's alone is 2500 with the first 200 currently in production. Give it time to build a decent amount of demand noting DL have designed & are selling commercial, professional & sports CCRs that all use the same EAC, granted the price might not come down much but at least the demand will be there to make it an option for cheaper supply with the increased economy of scale.
With reference to Mel's Book, EAC can still give you a caustic cocktail, again let us not get complacent.
Sure, but it has been proven that on the O.R. CCR's, you can flood the loop completely & provided you drain the water in under 5min, you can continue diving: no caustic cocktail, no increase in WOB.
Leave the EAC sitting in a flooded loop >5min and you have an issue, granted.
I think my wife was referring to the fact you mentioned taking 100% 02 to 8m giving you a PP02 of 1.8 well above the 1.3/1.4 even the 1.6 that is recommended. It doesn't take much to spike to 2.0 with additional depth and 02 hits have happened with less.
This is may have been a typing mistake, we are all human after all.
No mistake, I have many an hour finning between 0 - 8m on 100% o2 on a rebreather, granted it is not something commonly taught nowadays in Tech Diving, but you don't have to look to far to find references: Oxygen and the Diver by Donald is a pretty good read.
Regards
Brad