Harvia Sauna Hygrometer

Humidity is one of the main factors affecting the comfort of using a sauna. Thanks to the hygrometer, we can read its level.


Scaling the hygrometer
The meters react relatively slowly to changes, but they inform about the conditions in the sauna room with quite high accuracy. If the measurement results do not appear reliable, the measurement reading can be scaled according to the perceived humidity.
The hygrometer shows the relative air humidity in the sauna as a percentage. The maximum value is 100%. Such a result is achieved after wrapping the hygrometer in e.g. a damp, warm towel for 3-5 minutes.
When the hand of the hygrometer has calmed down, adjust the hand of the hygrometer from the back with a screwdriver so that it shows 100%. After adjustment, the hygrometer shows the lower humidity with the proper accuracy.