Ray Lovinggood wrote:
I've not flown in wave, yet, but I would guess the
cockpit could get rather cold. The spec sheet for
this oximeter shows the operating range from 39 degrees
F to 109 degrees F.

Can cockpit temps drop lower than 39 F at oxygen altitudes?

They can, and I've 10F or so inside when it's -20 outside. I'm sure it
will work at least 10 degrees below it's spec, or more, as is common for
electronic equipment. My Ipaq is rated to 32F, and it was working fine
in that 10F cockpit I mentioned, but you can't count on everything doing
that well. Thus the hope someone had experience with these.

Of course, most of my oxygen flying isn't in temperatures that cold, so
it would be useful the majority of the time.


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Eric Greenwell
Washington State
USA