Using the graphical representation of
the last 12 hours
In the graphical representation you can very easi-
ly read off the record of the relative humidity and
the perceived level in the room within the last 12
hours.
Perceived level
(comfort index)
Too wet
Wet
Comfortable
Dry
Too dry
Hygrometer WS 1500/1501
Relative humidity
81% to 90%
61% to 80%
41% to 60%
31% to 40%
20% to 30%
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