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Sutty · 29th March 2007, 16:06

Quote: (Originally Posted by AD_ward9)

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.

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

I was thinking more of an add-on to existing units.

Interesting they don't work in helium - most piezos work at resonant frequency - this would probably change in a helium atmosphere, maybe thats the reason.

Neil

29th March 2007, 16:06	#26 (permalink)
Sutty Classic Kiss diver Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: Glossop, Derbyshire, UK Posts: 802	Re: moisture & "bubbles" over O2 sensors Quote: (Originally Posted by AD_ward9) 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. 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 I was thinking more of an add-on to existing units. Interesting they don't work in helium - most piezos work at resonant frequency - this would probably change in a helium atmosphere, maybe thats the reason. Neil __________________ Never forget that life is a finite resource.
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