Hygrometer question. . .

billyrayvalentin · 02-20-2009, 04:47 PM

I have one of the cheapo wallyworld hygrometers. I recently upgraded my humidification system in my larger humi (thanks again scott) so I recalibrated my accu-rite hygrometer using the salt and water and storage bag method. Most examples suggest allowing the hygrometer to sit with the salt and water for about 8 hours and some suggest much longer. After about 12 hours my accu-rite was at about 67%, but then I let it sit much longer. After about 2.5-3 days it was at 75% and I concluded the test. My question is which reading was accurate. If allowed to sit for too long can the rh in the bag actually reach above 75%? I am concerned because after replacing it in my humi it is reading at 57%. If the first reading was accurate that means my humi is at 65%rh which is my target. If the second reading was accurate then I need to ad some moisture to the beads.

Thanks in advance.

By the way, the last time I calibrated the accu-rite it was at +1% (reached 74% during calibration)

NCRadioMan · 02-20-2009, 04:55 PM

I would say 75% was the correct reading and that would be dead-on. When salt-testing, I always allow 48 hours to get a more accurate reading.

karmaz00 · 02-20-2009, 05:38 PM

i usually let sit for 48 hrs..to ge tht e acurate reading..75%

02-21-2009, 01:41 PM

Add more water to your beads. 75% of them should look wet and semi translucent.

02-20-2009, 04:47 PM	#1
billyrayvalentin Still Watching My Back Join Date: Jan 2009 Posts: 168 Trading: (1)	Hygrometer question. . . I have one of the cheapo wallyworld hygrometers. I recently upgraded my humidification system in my larger humi (thanks again scott) so I recalibrated my accu-rite hygrometer using the salt and water and storage bag method. Most examples suggest allowing the hygrometer to sit with the salt and water for about 8 hours and some suggest much longer. After about 12 hours my accu-rite was at about 67%, but then I let it sit much longer. After about 2.5-3 days it was at 75% and I concluded the test. My question is which reading was accurate. If allowed to sit for too long can the rh in the bag actually reach above 75%? I am concerned because after replacing it in my humi it is reading at 57%. If the first reading was accurate that means my humi is at 65%rh which is my target. If the second reading was accurate then I need to ad some moisture to the beads. Thanks in advance. By the way, the last time I calibrated the accu-rite it was at +1% (reached 74% during calibration)

02-20-2009, 04:55 PM	#2
NCRadioMan Chutney Lovebusciut Join Date: Oct 2008 First Name: Chutney Location: On the shores of Loch Shiel Posts: 4,277 Trading: (66)	Re: Hygrometer question. . . I would say 75% was the correct reading and that would be dead-on. When salt-testing, I always allow 48 hours to get a more accurate reading. __________________ The path to loyalty is trust.

02-20-2009, 05:38 PM	#3
karmaz00 Habanos Join Date: Dec 2008 First Name: Jason Location: victoria Posts: 1,855 Trading: (1)	Re: Hygrometer question. . . i usually let sit for 48 hrs..to ge tht e acurate reading..75% __________________ Habanos Collector Since 2003

02-21-2009, 01:41 PM	#4
pmp Guest Posts: n/a	Re: Hygrometer question. . . Add more water to your beads. 75% of them should look wet and semi translucent.