On 12/31/2014 5:45 PM, Danny D. wrote:
dpb wrote, on Wed, 31 Dec 2014 09:00:35 -0600:

indeed the
current is carried by the flame (actually ions produced by the
combustion process).

I find it interesting that the electrons flow, in effect,
backward, in the opposite direction of the flame, from the
stainless steel rod, along the flame, back to the burner
metal to ground.

The primary direction of current flow is determined by the relative
sizes of the two electrodes...iow, it's determined by the geometry of
the detector in relationship to the burner to set up the current flow as
desired.

I didn't find a readable text(*); perhaps the Robertshaw publication
will help some...

http://www.google.com/url?sa=t&rct=j...63_RevB_1.pdf&
ei=t6KkVL29G4qFyQSRw4KYAw&usg=AFQjCNEdbUKV1Mm-cBkT8B4Ui1HGDtt9xg

(*) And, while am a MS Physics guy, I'm not going to try because I find
as soon as I do I end delving far too deeply and confound rather than
explain...

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