ScioSense offers a range of sensors that provide relative humidity and precise temperature measurements. Using this data, absolute humidity and dew point can be calculated. 

Relative humidity shows how much water vapor is in the air compared to the maximum it can hold at that temperature. It’s the actual vapor pressure divided by the maximum possible vapor pressure at that temperature. When the temperature goes up, the air can hold more water vapor, so the relative humidity goes down. In other words, if you have the same amount of water vapor but different temperatures, the relative humidity will be different. Imagine two beakers: the size of the beaker represents the temperature. Even if both beakers have the same amount of water vapor, the relative humidity will be different because the beaker sizes representing temperatures are different. Absolute humidity refers to the amount of water vapor in a specific volume of air, measured in grams per cubic meter or kilograms per cubic meter. In our example this is represented by the green colored water vapor in the beaker. Dew point is the temperature at which humidity begins to condense. In simpler terms, it is the temperature to which air must cool for condensation to start.

Click here to learn more about the ENS21x family of humidity and temperature sensors.