O2 == 1.00? volts?

[Regnirps at aol.com]

In a message dated 5/6/99 4:02:52 AM, ludis at cruzers.com writes:

>Is it possible for an O2 sensor to output a full volt (plus a few
>millivolts)?  I thought they peaked out at 9/10ths of a volt or so

The 0.9 volts is what you expect for a 12/1 ratio (if the sensors were 
accurate outside the stoichiometric point at .467 volts). My meters 
(shameless plug: www.regnirps.com) show a cold sensor indicates full rich and 
they can be as high as 1.2 or 1.25 volts. Some chemical half-cell potential I 
suspect but I have yet to find the definitive paper on the electrochemical 
reaction involved.

Charlie Springer