Quote:
I just wanted to show that I took extra care answering your question, not trying to be a smart ass...
I had to look up Cumbria.. I knew nothing about it...
Joe
I know you weren't- email is so cold though isn't it.
Gilles has basically confirmed what I what I wanted to hear in that it doesn't matter what PO2 the uncalibrated cells read in air or O2. What matters is the relative difference in mV between air and O2.
I'm at sea level near as dammit and the unit is set on 0m. When I switch on if its outside the range 0.20-0.23 PO2 in air then I'll recalibrate.
thanks for the responses.