RO2 Environmental Performance

["James G. Barnes" <mail15077@pop.net>]

Good Morning,

    Is the RO2 meter dying because of the temperature or is it because of 
humidity?  Generally, I have found the R02 to be a pretty robust instrument 
EXCEPT when it was used in steamy atmospheres.  If the probe dessicant is pink, 
then the probe atmosphere would humidify in hot, wet environments (similar to a 
reactor containment) and the instrument would fail.

    (If you haven't done this already,) try wrapping the instrument in a 
plastic bag and seeing if that seems to extend the performance time of the 
instrument?  If so, it's probably the humidity that's killing the meter.

Jim Barnes, CHP
RSO
Rocketdyne Division, Rockwell Aerospace