Retaining KISS style mCCR with addition of eCCR

Scuba_Vixen

Hi Guys,

Following along from this previous thread about adding electronic O2 injection control to my ongoing project;

http://www.rebreatherworld.com/rebre...ck-wanted.html

The initial thought was to plug the KISS valve orifice function, (jetsam shows a plug available) and have it as a totally manual addition source.

This would be as a backup to the electronics controlled solenoid valve, which would have an inline flow stop in case of problems.

As I started looking at what it would take to plumb everything in, the idea that two 1st stages on an "H" valve might be a viable way to go...

Using 1 depth compensated DS4 for the solenoid, and 1 non-compensated DS4 for a normally functioning KISS valve, would give two independant O2 addition systems that could be selectively activated by which "H" valve was on or off. .... With both on, the electronic control could essentially be in the background in parachute mode.


Can you all offer some thoughts here, pros and cons?




Darlene

Marc T

Hi darlene,
Do you think a voting logic is really usefull in a parachute mode? Personaly I dont ,cause of the very low set point.
In this way electronics would be greatly simplified with the same result.
But perhaps you need a backup for manual O2 addition if the parachute is activated because of kiss valve failure.

Cheers

Marc