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RH vs Dewpoint for ESD control?

RH vs Dewpoint for ESD control?

RH vs Dewpoint for ESD control?

(OP)
Does the conductivity of air change in accordance with absolute moisture content (ie grains of moisture) or is it affected by relative moisture content (i.e. reltive humidity ratio).

It would seem logical that as air expands, so does its ability to hold vapor, hence the conductivity decreases as the percentage of moisture increases.  Or is the conductivity related to absolute moisture content.

Can anyone lead me to any information exploring this topic?

The general conditions I'm interested in are for temp ranging between 50 and 100°F with 20-80%RH in relation to ESD (electrostatic control).

RE: RH vs Dewpoint for ESD control?

Relative humidity is the key player: conductivity raises with RH.
I am sorry I can not offer any quontitative data or URL.

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