[quote=Drmike;182910]
Quote: (Originally Posted by
silent running)
nope, but what did come up was an interesting discussion on the auto pre dive cell calibration. I suggested to him the best pre dive cell test would include a current limitation test over max setpoint. He said unit was capable of holding well over 1.3bar on surface so I hope they will consider implementing that. Adding current limit test to the other auto tests and continuous cell validation could make for one very interesting unit from a safety perspective.
That would be great if they built in a current limiting test, but I wonder if pumping the unit up to 1.6bar on the surface would stress the lungs too much. And I guess it would then be possible to calibrate low O2 with the right amount of over pressure on the surface, but the mnf has stated that they regard the argon concentrations in low purity O2 as a hazard and will likely discourage users from attempting a surface cal with low purity O2.
Quote: (Originally Posted by
Drmike)
I was actually quite impressed with the unit and the concept of cont cell validation. It apears well thought out. Yes the hoses look small (but so what? wob passes CE unlike some larger looking hosed units) but its deceptive as they have no corrogation like normal rubber hoses and are smooth bore. It wouldnt surprise me if the inner bore was same as other units inner bore (when you take into account rubber hose corrogation)
Yes, the continuous cell validation is done in a very clever way.
So the hoses aren't as small as they appear. I didn't know they were smooth bore, which would lessen the turbulence in the gas flow and probably help the WOB. And of course you are right that large hoses don't necessarily mean low WOB...