Peter L. Peres wrote:


> Any thoughts about measuring gas anomalies by measuring the breakdown
> voltage of a spark gap in air ? At least humidity and altitude will
> influence this (plus electrode corrosion but suppose they are gold
> plated).
>
> I have been thinking about this and there may be something to it. I ran
> some very crude tests in a spark gap with several gases (like electronic
> freeze spray which is a HCFC) and there is a definite dependency on the
> gas mixture.

There are commercial capacitive detectors which use the gas
sample as a dielectric.

regards, Jack

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