heartfelt beads and hygrometer calibration

[Wharf Rat]

Originally Posted by timatraw

Im having a heck of a time getting an accurate calibration reading for my stinking hygrometers. Is it possible to use a cap full of 65% beads (half wet with distilled water) in a tupperware with the hygrometers and get an accurate reading? I am guessing that the RH should be 65% after 24 hours or so.
Will this work?
Has anyone tried this calibration method with success?
Thanks.
Tim

Well, the salt test is actually a calibration method that relies on some fundamental science. Its like using boiling and freezing water to calibrate a thermometer. The temperatures are known constants.

If you calibrate using the beads, than your hygrometer is basically calibrated using the same thing you're measuring. Its not independent.

Bob

[eber]

Originally Posted by Wharf Rat

Well, the salt test is actually a calibration method that relies on some fundamental science. Its like using boiling and freezing water to calibrate a thermometer. The temperatures are known constants.

If you calibrate using the beads, than your hygrometer is basically calibrated using the same thing you're measuring. Its not independent.

Bob

Excellent point sir

I have been using the salt test on mine and have had no problems

[Wharf Rat]

Originally Posted by eber

Excellent point sir

I have been using the salt test on mine and have had no problems

Thanks.

The salt test is one of those internet cigar mysteries. Some folks find it easy, others don't. So, there's nothing wrong with buying a Boveda pack. According to their website, its really the salt test. So, I guess you are paying for a premixed slurry. OK with me!