| Woz, done (posted to articals as well).
Mal, the comment
Only one cylinder is being monitored, so it is possible if the manifold is closed or obstructed to breath the unmonitored one to zero!
It is possible to 'miss' that the contents gauge is not moving, especially if you are suffering narcosis or during times of high task loading.
If the contents gauge is on the cylinder you are breathing it is possible to be unaware that the other cylinder is empty & that the manifold is either closed or blocked.
I once breathed a twinset to zero on one side without realising what was going on, due to a blocked manifold, narcosis & high task loading & repeating the route we had previously done before taking in the camera gear. Stupid mistake, I should have been aware of the problem before it bit me in the ass - it's a real shock to run out of gas when you have a contents gauge sitting at 180bar!
Cheers
Gareth
__________________
Gareth
"A life without adventure and no risk is not a life at all. Adventure and risk are the very source of advancement in science, sport, the arts, learning and society."
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