Answer
Jul 15, 2024 - 06:59 PM
Dew point temperature and relative humidity both provide an indication of the amount of moisture in the air. The dew point is the temperature at which air becomes saturated with moisture and water vapor begins to condense into dew. Relative humidity is the percentage of the current amount of water vapor in the air compared to the maximum amount of water vapor the air can hold at a given temperature. If the air temperature is known, you can calculate dew point temperature from relative humidity and vice versa. Please see the IOThrifty biog “Dew Point Calculator – Convert Relative Humidity to Dew Point Temperature” for details on the calculation.
Many instruments that measure dew point temperature or relative humidity have the ability to either display both measurements or switch between the two. One measurement be more desirable than the other depending on the application. There are applications where moisture content in the air is best related as dew point temperature. Measuring the dew point temperature of condensed air to prevent water from forming in a line is one common example. There are also many applications requiring humidity monitoring. A drying process is one such example.
