Hygrometers and humidity measurement instruments test for absolute humidity, relative humidity, or dew point in air. The range humidity measurement instruments operate in is typically from 0 to 100% ...

If you want to measure humidity (and temperature, and maybe even barometric pressure) in a device that you’re building, have a look at this comprehensive test of seven different options.

Humidity is usually measured in terms of absolute humidity (the ratio of the mass of water vapor to the volume of ... The following sections discuss how each sensor type is constructed ...