Pulse oxymeters need warm fingers with a good blood flow to get a reading.
Clip on units like this require that you remove a glove to use it - not a
good idea in a wave. I'd pass.

I use a unit that has a sensor on a cord. The sensor and cord can go under
a glove. The display unit attaches to my arm with a Velcro strap. How cold
can it get in a wave? I've seen -55F.

Bill Daniels


"Larry Goddard" wrote in message
...
Ray, just a thought, but the warmth from your hand might keep it well
above that temperature... even though your fingers sometimes feel like
they are going to break off.

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?

Ray Lovinggood
Carrboro, North Carolina USA