Mirror flooding.
If there is an abrupt transition from dry to moist
conditions (particularly when accompanied by a transition from
cold to warm temperatures) the mirror may accumulate an over-
load of moisture. It may then take several minutes for the sensor to
dry out. The process can be speeded by switching to
HEAT
to
temporarily heat the mirror.
64
Page
Appendix B — Humilab chilled mirror hygrometer
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