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Old 29th March 2007, 15:34   #25 (permalink)
AD_ward9
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Re: moisture & "bubbles" over O2 sensors

Quote: (Originally Posted by Sutty) View Original Post
Alex, any thoughts on using a piezo unit to vibrate the cell to dislodge water droplets? Would existing sensors cope with vibration like that?

Neil
It is not necessary if the sensors are simply put in the right orientation. K.I.S.S.

Interesting little fact: piezos do not work in helium. I do not know the physics, but every piezo device we have ever tested, fails when subject to helium under pressure.

Quote: (Originally Posted by Janos) View Original Post
Personally, I didn't notice any increase in WOB. I did notice less moisture, although there is still some. However I put them scrim in relatively early in my Rebreather career (around 25 hours) so I don't have that good a baseline.
Lungs are really bad at measuring WOB. Worth doing something to measure the breathing resistance on a machine. We have been surprised on quite a few occasions, just how simple changes cause big effects.

Alex

Last edited by AD_ward9 : 29th March 2007 at 15:37.
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