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Dewcell

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from the air, conduction across the heating element increases, current in it increases, and heat increases, evaporating moisture from the salt solution. At a certain temperature the amount of moisture absorbed by the salt solution equals the amount evaporated (equilibrium).
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Dewcell (centre) with the protective guard used for storage and transportation on the left and the cover used while in operation on the right
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Some limitations and errors inherent in the use of the dew cell for measurement of atmospheric dew points
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composite (or other temperature measurement device) changes
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Index


dew point
heating element
lithium chloride
moisture
thermistor
electrical resistance
front end processor
voltage


Public Works and Government Services Canada
Translation Bureau
WMO and Eumetcal
MANOBS Chapter 6 - Humidity
Some limitations and errors inherent in the use of the dew cell for measurement of atmospheric dew points
Foxboro Dewcel documentation
Archived
Wayback Machine
v
t
e
meteorological equipment and instrumentation
Anemometer
Atmometer
Barograph
Barometer
Ceiling balloon
Ceiling projector
Ceilometer

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