The 5190 series temperture/humidity probes are designed for a variety of environmental monitoring applications, including All Weather Inc.'s Automated Weather Observing Systems (AWOS). The 5190
probes operate with a DC supply voltage and have a low current draw. Relative humidity is measured with a thin-film capacitor sensor, and temperature is measured using a Pt100 RTD. The signals from
the sensors are converted into two linearized voltage output signals.