O2 Volts

[rr]

Bruce Wrote:

>Per several off list letters I checked/doubled checked/thriple checked
>grounds and power for this bit of history.
>   I noted the following, using a 4 wire heated O2 sensor.  (General Motors)
>With no power to heater, 0.0v.   For approximately 30secs 0.0, and then
>quickly rose to .1v, then then slowly climbed higher.
>When hot, there was a nominal voltage of .28v at the O2 sensor lead wire.
>Exposing this sensor to 97% O2 (Medical Grade O2, as tested this am) it
>drifted to .030.-.032v.
>Exposing this sensor to the Butane from a cigarette lighter that was unlit
>immediately responded with a display of .7v......
>Your O2 sensor is a HC Sensor...
>Bruce and the staff at CSH, HQ

Bruce, I don't know why you say this, if you douse the o2 sensor
with butane, you block out the o2, so it will read high, as in a
rich fuel mixture. (No o2 present).

All of your above sounds correct, and with all respect, the
exception of your conclusion...

BobR.

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