Humidity question

[gabrielle1976]

My local weather channle says the humidty in my area is 80% I got a little humidty thing from a hard ware store and so far it says its 52% humidty in my house.
My question is can the huimidty vary that much 28% seems like a big diffrence but then again its trying to rain out side and I have the heater going in here.
I am just trying to make shure this guage is half way accurite.
Thank you

 

[BawGock]

The humidity can vary greatly between outdoors and indoors even room to room.
To check if you hygrometer is accurate you should calibrate it.
Here's a site that show you how to calibrate:
http://exoticpets.about.com/od/herpresources/ss/hygrometer.htm
Hope this helps
Carolyn

 

[SoccerMomof7]

Good Luck!!!

 

[gabrielle1976]

Thank you I am calabrateing the thing now, but now im not shure if i set it up right I did 1/2a cup of salt and 1/4 cup water but instead of wet sand it seems wetter, oh well Ill give it a try.
How is youre bator doing?

 

[Dread Pirate Roberts]

Keep in mind that it's called "relative humidity" because it's relative to the temperature. The higher the temperature, the more humidity the air is capable of holding, which explains the discrepancy between outside and inside.

 

[gabrielle1976]

Ok now my brain hurts , if thats true why is it 43F out side with almost 80% humidity but 64F inside and 56% or so humidity.?

 

[william9792]

seems like higher the temp the less humidty

 

[gabrielle1976]

Ok that got me to thinking that if temp changes humidity ,, if im calabrateing the thing now in a room where its about 60 or so does that mean that when it goes in the incubator and its 100 it will still be acurite.

Blah I dont like things like this I want to be told what to do with out guessing about why or how or for how many cookies.

 

[gabrielle1976]

Ok so I woke up this morning and checked my little humidity calabrateing set up here is what I found. My gauge said 91% I had 1/2 cup salt with about 1/4 cup water thing is I think I had to much water some how I stired the salt last night seemed really runniny not hte consistecy of wet sand. this morning it had sellteld with the salt on bottom and the water standing about 1/3 inch on the top. Did I do this wrong ? would that mean my humidity guage is still wrong.?? IF I did it right and it said 91% humidity that means when I use this guage I have to add 16% to whatever it says?
SO far I am hateing this humidity thing. Can someone please help me calabrate and under stand this stupid gauge. Thank you .

 

[Dread Pirate Roberts]

Quote:
Assume for the purpose of this example that all other factors are equal...At 43F, the air is holding 80% of the amount of water (humidity) it's capable of holding. At 64F, it's capable of holding more water, but it didn't acquire any more than it had before, so the relative humidity is lower...it's now only holding 56% of the humidity it's capable of.

Clear as mud now?