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Does anyone have any experience with the Taylor 5525 Mason Hygrometer? http://www.partshelf.com/taylor55251.html It seems inexpensive and I have read claims of 100% accuracy.

I am looking for a good accurate hygrometer for my shop to check my dehumidifier. After searching the forum threads I realized that buying and maintaining a hygrometer is much more complicated than I anticipated. I would appreciate any advice. Thanks!

Check with the 12th Fret in Toronto. They sell good ones for about $80 (IIRC). They'll ship to you, and you can ship them back yearly to be recalibrated for free.

Steve

Wet/Dry bulb hygrometers have been around for decades and are extremely accurate; you just have to put a little water in the reservoir from time to time. Weather "enthusiasts" have been using them since Noah's Arc hit a rock...
pvg

I wouldn't recommend that particular version. With only 2 degrees accuracy, you're opening yourself up to an instrument that will only give you answers within +/- about 20% humidity. A 4 degree swing in difference between the two, is a big difference when you are in the working range. Every degree is about 2 to 3% in humidity. I have a cheap one that has 1 degree markings and has both C and F scales. It allows a bit closer observation, but may still be inaccurate because it's a cheap model.

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Waddy

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Seems like all the wet/dry bulbs have 2% tick marks. How about a good quality hair hygrometer? http://www.ambientweather.com/fikf103pmh.html