O2 voltz

[Shannen Durphey]

Bruce Plecan wrote:
> 
> Nope. Not backwards, I retried it several times with the same results.
> Bruce
Think he meant predicted results, not actual.
I haven't picked up on the split in information, but traditional
teaching has it that less O2 on sensor side=higher output voltage. 
Try putting just the wire side in O2 and see if voltage climbs by a
tenth or two.
Shannen
> 
> > > 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.
> 
> > I think you have got it backwards. The sensor should be reading a very low
> > voltage as there is no difference in the concentration of O2 on both sides
> > of the sensor.
> 
> > Wen
> 
> > >   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