Senseca Delta OHM HD2013.3 Precipitation Detector

HD2013.3 is a precipitation detector based on the capacitive principle. The capacity value of the sensitive element changes according to the surface dampened by raindrops. An integrated heater keeps the detector dry, evaporates water and prevents false signals caused by fog or dew. The heater also activates at low temperatures, melting the snow and allowing detecting snow precipitations by using an ambient temperature sensor. The instrument external circular dome acts as a windshield for the sensor, preventing false indications. An auto-calibration algorithm compensates for variations in the response due to the dirt that can accumulate on the sensitive surface.