Calibrating a Hygrometer

[istanbulin]

I posted a little about this issue before in an other thread about seed storage. But hygrometers may also be used in fermentation (and other) process. So it may be useful to put it here. I think, there's no need to say anything, the video below is explaining everything about hygrometer calibration.

 

[istanbulin]

I calibrated hygrometers several times in the past both with salt method and with special professional kits.
For testing a cheap (< $5) analog hygrometer, I bought one today and tasted its accuracy with the salt test. Here's the result. It's showing 75% RH, accurate, really good according to its price.

 

[darren1979]

Thank you Istanbulin, i havn't got an hygrometer but its one of the things on the too do list.

 

[istanbulin]

You're welcome. Btw, sorry for the photo. I never know that taking a photo of an item which is located in a plastic bag is thus much difficult.

 

[workhorse_01]

I have a digital hygrometer made by feildpeice that plugs on to my hvac meter http://fieldpiece.com/accessory-heads/arh4 This has served me well for about 13 years ,I have learned to trust it.

 

[rainmax]

View attachment 4631

In your place I would buy at least three of them. You gonna need them.
I have high humidity in my basement sometimes at my porch also in my mini fermentation chamber and I Change them regular. In last 15 years I throw away at least 5 of them but probably more. Three digital and two analog I remember. Most of the time I have problems with rust with analog and display mold with digital. I usually spent about 25 euros for piece and I feel very sorry when I loose one.

This is a good price.