Inaccuracy of hygro meters

The measurement and display of thermometers brand by brand and model by model of the same brand are more more less the same, not precisely the same but can be considered as acceptable.

On the other hand he measurement and display of hygro meters quite differ brand by brand and even model by model of the same brand. One shows RH 65% while another one shows RH75%. If you go to a show room of the thermo-hygro meter company or a booth at an exhibition you can easily see this difference. If you are critical and point out this problem to a sales man/woman he or she will be put in a difficult situation and may be angry at you.


sptt