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| Reliable Hygrometer Calibration for the Luthier http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=43241 |
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| Author: | woodrat [ Thu Apr 17, 2014 9:30 pm ] |
| Post subject: | Reliable Hygrometer Calibration for the Luthier |
Hi I posted a link to the topic in another thread on shop atmosphere control but I thought that I would post a link here to my post on the ANZLF regarding Hygrometer Calibration that can be done easily at home.... http://www.anzlf.com/viewtopic.php?f=1&t=6123 Cheers John AKA WoodRat |
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| Author: | Michael.N. [ Fri Apr 18, 2014 3:13 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
I've been testing my cheap digital Hygrometer for a few years with the Pot. Carbonate. Amazingly the Hygrometer reads within 3% and has done so since I bought it over 6 years ago! The accuracy suffers at the extremes but who cares. Not bad for a hygrometer that cost less than $30. |
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| Author: | Colin North [ Fri Apr 18, 2014 3:46 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
Similar story here, one digital ($15) and another analogue (<$10 from Ikea), checks done with potassium carbonate. Digital reads 4% low and analogue 5% high, been pretty consistent for 3 years now |
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| Author: | Michael.N. [ Fri Apr 18, 2014 4:29 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
Yes but I was saving up for Christmas. What's your excuse? |
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| Author: | mqbernardo [ Fri Apr 18, 2014 6:28 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
will food grade K2CO3 work ? that´s the only kind i can find locally. it doesn´t sate the purity on the label, but i guess it should be enough of it there, right? |
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| Author: | Colin North [ Fri Apr 18, 2014 8:07 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
Seems pretty likely - I found this http://www.amazon.com/review/R1FLJHQCML5J9H/ref=cm_cr_dp_title?ie=UTF8&ASIN=B009GAHL8Y&channel=detail-glance&nodeID=1055398&store=home-garden and this https://www.applichem.com/en/shop/product-detail/as/kaliumcarbonat-reinst-ph-eur-usp-lebensmittelqualitaet/ |
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| Author: | mqbernardo [ Fri Apr 18, 2014 10:48 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
thanks, Collin - i thought so. edit: thousandth post! .... wow! most of them about nothing at all, but still... |
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| Author: | George L [ Fri Apr 18, 2014 11:02 am ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
Thanks for posting the link, John, and to the rest of you for your follow up comments. Good stuff! |
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| Author: | Colin North [ Fri Apr 18, 2014 2:06 pm ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
I found this very interesting (simple and inexpensive!). A lot of you may have seen it already. http://www.mimf.com/phpbb/viewtopic.php?f=12&t=1701&p=15583#p15583 |
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| Author: | Colin North [ Fri Apr 18, 2014 2:10 pm ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
Michael.N. wrote: Yes but I was saving up for Christmas. What's your excuse? I'm Scottish! |
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| Author: | woodrat [ Fri Apr 18, 2014 4:27 pm ] |
| Post subject: | Re: Reliable Hygrometer Calibration for the Luthier |
Good to see so many replies here, I am glad that it has been of interest to folks!... Colin...thanks for the link to the post about the Dew Point method on the mimf.com ...that is very interesting. Regarding food grade K2CO3 I believe that it will work fine... Cheers John AKA WoodRat |
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