O2 sensor temperature dependence

Using Arduino Sensors
1

Hi all,

My team has deployed the UV Flux Oxygen Basic Sensor in a greenhouse using Arduino Uno. Preliminary results show problematic temperature dependence, where O2 levels fluctuate inversely proportional to temperature.

Does anyone have suggestions for correcting for this? I've attached the graph of O2 vs temp outputs.

Thank you!

fig3.png
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2

Those measurements seem to be taken over a long period of time and the swings in temperature and oxygen levels appear to be diurnal. Are you sure you're not just seeing the normal diurnal swing in both values? I would try an experiment with a known O2 level and a temp I could vary myself.