Freezing Rain Sensor Model 6495

Advanced Sensing Technology Eliminates False Signals The AWI Model 6495 Freezing Rain Sensor uses an ultrasonically vibrating probe (nominally 40,000 Hz) to detect the presence of icing conditions. . The vibrating frequency of the probe (nominally 40,000 hertz) decreases with the accumulation of ice, frost, or wet snow.Efficient Probe Design Melts Ice in Seconds After ice has accumulated on the probe to a predetermined thickness, the AWOS DCP instructs the sensor to turn on its internal heaters to deice the probe. During deicing, maximum heater power is 400 watts. The deicing system is capable of completely melting approximately 3.8 mm of ice on the probe and strut within 30 seconds at -20 degrees Celsius (