Humidity in Bator...EXCELLENT INFO HERE! EVERYONE SHOULD READ THIS!

[1Chick Magnet]

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I picked up 2 Acurite units last week and while the temp readings were the same 99% of the time (only off by one degree when they were off) the humidity readings were way off to each other.
For the heck of it I gave my wife one of them and I kept the other and we breathed on them till they pegged out at 99%.
It took a little bit for the humidity readings to drop but ever since they have been within a percent of each other!!

thanks I will try that. mine are 6 degrees off from each other on humidity. both are new.

 

[BirdBrain]

Here's how to calibrate a hygrometer:

Using a mug, mix a half cup of salt with about a half cup of water to make a salt slurry. Place the mug and your hygrometer into a large Ziplock bag and seal it. Wait for 12 hours. Your hygrometer should read 75%. If is off one way or another, just at the difference to your display when you read it and make adjustments to your humidity based on the new value. For instance, our hygrometer read 71% after 12 hours. I new that I needed to add 4% to the displayed number to know what the humidity truely was.

 

[CARS]

Quote:
I picked up 2 Acurite units last week and while the temp readings were the same 99% of the time (only off by one degree when they were off) the humidity readings were way off to each other.
For the heck of it I gave my wife one of them and I kept the other and we breathed on them till they pegged out at 99%.
It took a little bit for the humidity readings to drop but ever since they have been within a percent of each other!!

thanks I will try that. mine are 6 degrees off from each other on humidity. both are new.

You'll still want to check the accuracy using the methods listed by BirdBrain and others but this is how I got the two to match each other for the last week.

I can't really "calibrate" mine. There is no way to adjust it if its off

But I can use the same tests to show how far off it is and make a mental note.

 

[SoccerMomof7]

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That sounds great but when we are in a hatch, we can't loose it for 8-12 hours! Maybe I will try it afterwards.

 

[CARS]

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I think your suppose to do it before each hatch

 

[LilDucky85]

I need to bookmark this thread lol, is there a way to?

 

[CARS]

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On my browser, you right click and save bookmark.

Are you saying that BYC isn't bookmarked? (of course I swear that some members have this site as their homepage

 

[jvls1942]

what I do is go to the bottom left of the page and find where it says "subscribe to this topic"
click it and then it will always be easy to find later.. also, you will be notified whenever somebody posts on that thread..

 

[emit]

one of the best threads I have read on this board thanks to all I am more able to work my new bator better

 

[Huny]

So it took me a few hours but I have made it through this discussion and wonder something (that I don't think I saw here).

Everyone who is enjoying great hatch rates with the dry hatch method (which I don't really call dry if you have 30% humidity) I have seen has been back east or west coast. The ones I saw stating 70-80 percent humidity were Utah, Idaho, and Montana. We are very dry out west, our humidity has been running weather wise around 5-10% lately where I'm at. I know in New Mexico near the plains (where I was last year) it ran about 40-50% this same time last year. Could it be that we are so darn dry in the Rocky Mountain Region that we need 70% to counteract the dry air we have? It is so dry some days it burns to breath, especially if I haven't stayed hydrated.

I don't think it has to do with elevation, more like relative humidity. Does anyone know, ran any experiments? I have called people I know who have hatched long ago, and they never watched their humidity, just "filled the tray".

I am supposed to be hatching on Friday/Saturday, I got a digital humidity/temp thermometer a week into hatch and it's been around 30-35% with one tray full and both plugs in. I filled the second tray now (I'm in a Hovabator 1602) and it's flucuating still but I think it's going to be stay steady now at 55-60%.