Dew Point Humidity Sensor for Instrumentation Engineering Classes

In this work we propose a simple low-cost implementation of a humidity measurement device for engineering classes. The working principles are based on the assessment of the dew point temperature, environment temperature and atmospheric pressure measurement by using the psychrometric equation. System development was based on two temperature sensors and a dew point temperature detector. The obtained results showed that the proposed methodology can provide accurate results and be an effective low-cost alternative to high-end commercial dew point meters. This simple approach also introduces the advantage of allowing specific tuning of the system’s components.