Quote: (Originally Posted by
silent running)

But I'm still wondering if the lower inlet scrubber temp of a unit with an out-in flow would be more likely to cause a CO2 hit from over breathing during a period of high exertion at the beginning of a dive. I think of all the exploratory dives I've done which have started out in less than calm conditions so I'm sure it's not unusual for somebody to experience a period of high stress/exertion at the beginning of a dive in a new environment.
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How fast is really a function of scrubber dimensions.. If they are sufficient and mosture is available the scrubber should be able to cope pretty rapidly.. The golem scrubber has about 25% more sorb (theorfor contact surface area) than a scrubber the size of the standard prism, and therofoe has the potential to startup even faster.. dimensions are more important that direction.. poor dimensions and the direction doesnt matter.. Look at the difference between the original prism scrubber and the released one, just a small difference in sorb made a BIG difference because the dimensions changed..
Hot gas VS cokd gas towards the sensors doesnt really matter.. what matters is WHERE there is a cooler surface if the gas is still hot, it will contain the same amount of moisture, you wount get condensation until there is a temperature drop.. on the HH the cell faces are VERY close to the exited gas (and a small volume as well) so its unlikely alot of moisture will build on the cell faces.. They are also pointing down (when vertical) so even moisture does end up on the cell it would move off the face in the prone position.. The cooling will be further up the head and then it would run down the tube away from the sensors.. Also remember this since the outlet side of the loop is hotter than the inlet side its capable of holding more moisture..