Psychrometric Chart

The good people at Linric Company, of Bedford, NH, provide this Psychrometric Chart as a free download. They sell PsycPro software.

Here is a link for free ET_AEE software that performs calculations for you.

Psychrometry is the study of moist air. The psychrometric chart displays the relationship between dry-bulb, wet-bulb, and dew point temperatures, and specific and relative humidity. Given any two, the others can be calculated. To use the chart, take the point of intersection of the lines of any two known factors (interpolate if necessary). and then from that intersection point, follow the lines of the unknown factors to their numbered scales to obtain the corresponding values.

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived...