Using dew point temperature as the control parameter in high-humidity applications

Nevon Mansour, Application Engineer
Nevon Mansour
Application Engineer
Industrial Manufacturing and Processes
Industrial Measurements
Life Science

What are the benefits of using dew point temperature as a control parameter in process control?

Dew point temperature is a useful parameter in many industrial applications because it is not dependent on temperature variations. It is often used to measure dryness in different drying applications, where the relative humidity (RH) is very low; it is also useful to know the dew point temperature in cases where you need to humidify a space or maintain high humidity in a controlled environment. Let’s say you have a space or an application with a relatively high humidity and you need to humidify or dry the space or maintain constant high humidity while maintaining a stable temperature. This would be impossible by using relative humidity as the control parameter since it is dependent on temperature. Instead, using dew point temperature as the control parameter would work perfectly.

How to calculate relative humidity from dew point temperature?

To help you get your dew point temperature controls to work in practice, we have put together a downloadable white paper. It includes everything you need, from formulas (with and without process pressure) to correlation coefficient tables for different temperatures. You’ll also find a checklist of what to consider when choosing your measurement instruments.

Download white paper: Controlling high-humidity applications with dew point temperature


Nevon Mansour, Application Engineer

Nevon Mansour

Application Engineer

Nevon works as Application Engineer at Vaisala Industrial Instruments and has several years of industrial experience. ​
She holds a B.Sc. in Mechanical engineering with a concentration on Mechatronics from the University of Oulu, Faculty of Technology, and is finalizing her master's degree.

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