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Amazon Shop: Hygrometer

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Registered: 12/07/02
Posts: 2,017
Loc: PNW
Home made Psychrometer
    #4345037 - 06/27/05 11:37 PM (12 years, 9 months ago)

two cheap refrigeration thermometers (make sure to get two that read the same temp).
glue them to a plastic bottle.
a 2" piece of cotton shoe lace is tied to one thermometer and passed throw a hole in the bottle.
put a little distilled h2o in bottle.
compare wet bulb temp to dry bulb temp w/this PSYCHROMETRIC CHART

it is importent to use distlled h2o, because impurities can effect an accurate reading.
this is just as accurate as an 100$ hygrometer, and costs about $2.45 to make

Edited by deanofmean (06/28/05 12:49 AM)

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Big Spender

Registered: 06/08/05
Posts: 722
Loc: Temple of Boom
Last seen: 5 years, 4 months
Re: Home made Psychrometer [Re: deanofmean]
    #4345300 - 06/28/05 01:13 AM (12 years, 9 months ago)

Wow.......you, Are a god.


Dale Carnegie, once said that he never needed to know any thing about any thing because he knew EVERY thing. Any time he didn't know some thing, he asked, he asked his team, his friends, And most important he asked the person that would know the answer.

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Registered: 12/07/02
Posts: 2,017
Loc: PNW
Re: Home made Psychrometer [Re: thremix]
    #4345895 - 06/28/05 04:25 AM (12 years, 9 months ago)

here is another chart

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Amazon Shop: Hygrometer

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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