Let’s first state the obvious. Most techs are intimidated by Psychrometric charts and Mollier diagrams, we just are. While there are some pretty complicated formulas that back up these diagrams, using ...

Dew point can be calculated using the air temperature and a relative humidity value, which is measured using something called a sling psychrometer. A psychrometer is a metal rod, around 6 inches long, ...

At head of title: U.S. Dept. of Agriculture, Weather Bureau. siris_sil_32796 ...