NTK UEGO calibration

[Neil.Poersch at mts.mb.ca]

This begs the question about how is the DIY WB O2 unit calibrated?  Looking
at the schematic the UEGO sensor's calibration resistor is used to control
Vout from the unit.  I assume that the manufacturer of the UEGO has
selected an appropriate value resistor for each individual sensor.  But how
can a user check this?  For example to confirm that a measured AFR, say
13.0 is exactly 13.0?  Has anyone who has built one of these units
confirmed proper AFR readings?

Neil

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