Humidity, dewpoint and temperature measurement instruments
Relative humidity (RH) is defined as the ratio of the water vapor pressure or water vapor content to the saturation vapor pressure or the maximum vapor content at the temperature of the air or gas. The saturation vapor pressure in the air varies with air temperature, the higher the temperature, the more water vapor it can hold. When saturated the relative humidity in the air is 100 %RH.
Hand-held Dewpoint Meter The meter measures dewpoint accurately in a wide measurement range. It can be used in many industrial spot-checking applications as well as a one-point calibration check for fixed dewpoint transmitters.