W W Meixner
Banned
...provided the flow rate is low enough that you don't get an increased pressure at the sensor.
An O2 sensor is an electrochemical cell. Its voltage output is proportional to the PO2 close to it, not the FO2. So if the flow is so high that the cell experiences a pressure significantly above ambient, it will give a too high reading.
As well as very likely damaging the cell/cell membrane...
W...