farm innovators pro 4200 hygrometer issue???

[redwood]

I have a farm innovators pro 4200 and the hygrometer reads 47% humidity and the 13 dollar digital thermometer and hygrometer I bought is reading 27% humidity. My question is which one should i trust? Any help would be greatly appreciated!

 

[bugglesmommy]

The one you purchased is far more likely to be accurate. You can NEVER trust the built in thermometers on most models. I know my Farm Innovators hydrometer is way off and reads much higher and the thermometer is 2 degrees high.

 

[redwood]

Thanks!

 

[chiqita]

you can calibrate the one you can move with the salt water method, then just see how much it is off and act accordingly.