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Old August 12th 03, 12:08 AM posted to uk.sci.weather
TudorHgh TudorHgh is offline
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First recorded activity by Weather-Banter: Jul 2003
Posts: 584
Default Dew Point Hygrometer

I am attempting to make an optical chilled mirror dew point hygrometer, and
then a full weather station to accompany it, anybody built similar items?


Doing it the hard way, then! I would have thought the most important
thing would be to have a very smooth highly polished surface on a piece of
copper that is as thin as possible, say about 10 thou or 0.25 mm. It might
buckle if you bash it, though. Brass would be nearly as good, and easier to
work.
What liquid are you going to use? Petrol would be OK - very volatile,
but it will become a little less effective each time as you blow off the
volatiles, but cheap enough. I use it to top up a Tippex bottle. Pongs a bit
but the volatility is right.

Best of luck - Tudor Hughes, Warlingham.