Description
The dew point temperature is the temperature (at a specific atmospheric pressure) at which the air is completely saturated with water. If the air temperature falls below the dew point temperature, the water begins to condense. The dew point temperature does not depend on the current temperature. With a dewpoint meter, you can determine the dew point temperature and the air temperature, so that you can always keep the environmental circumstances in mind and prevent undesirable condensation which might cause damage to electrical devices or injuries.
A dew point thermometer can also be used to forecast the weather to a certain degree. When the dew point temperature and the air temperature are known, meteorological phenomena like fog, dew or rain can be predicted in many cases. One possibility to measure the dew point temperature is to let metal cool down until its surface is steamed with water vapour. The temperature of the metal at this state represents the dew point temperature.
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