O2 voltz

[rr]

This sounds correct, a lean (o2 rich), condition gives a low
reading, while too much fuel (no o2), gives a high reading.

Run some propane over it to block out o2, and the reading
should go up.

BobR.

P.S. A while back there was a link to an epa article posted,
interesting reading, I'll see if I can find it.


>For the lack of anything else to do, I hooked the heated O2 up, and was
>looking at the voltage drop across a sensor resistor, I been thinking of
>using.
>  As the heater warmed up, the voltage drop across the resistor changed,
>just meaning the heater was drawing less current.
>  I had hooked the scope probe across the O2, and cold there was no >output,
>to be expected, but as it warmed up the output swung toward, .2v.  Just >in
>atmospheric conditions.  Ok, so then it should go way high in pure O2 >right,
>nope went a little over .3, and stopped there.
>  Did I need to load the sensor?.
>  The heater doesn't go to a high enough temperature for the O2 to fully
>swing high?.
>  Does the engine side need to see a slight amount of pressure to >reference
>to?.
>Grumpy