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July 1999

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Subject:
Humidity Measurement
From:
Craig Hillman <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 22 Jul 1999 05:00:00 EST
Content-Type:
text/plain
Parts/Attachments:
text/plain (30 lines) 
An environmental question:

        I have a board operating in a 30C, 70%RH environment. The board
is operating at 85C. How do I determine the humidity level at the
board?

        1. Is the moisture concentration and the RH lower than ambient
because of evaporation?
        2. Is the moisture concentration the same and the RH lower because
of a higher temperature (and thus higher solubility limit)?
        3. Is the moisture concentration and the RH higher than ambient
because the higher temperature results in a higher solubility limit?

Thanks in advance,
Craig

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