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All-Weather - Model 6495 -Freezing Rain Sensor
The FAA certified, Model 6495 Freezing Rain Sensor uses an ultrasonic axially vibrating probe to detect the presence of icing conditions. The vibrating frequency of the probe decreases with the accumulation of ice, frost, or wet snow. After ice has accumulated on the probe to a predetermined thickness, the AWOS DCP instructs the sensor to turn on it`s internal heaters to deice the probe.
The powerful deicing system is capable of completely melting 3.8 mm of ice on the probe within 30 seconds at -20°C, while requiring less than 400 watts of power to operate. Following the deicing cycle, a heat sink dissipates the heat from the probe assembly. The heat sink provides a recovery time of approximately 10 minutes after deicing, and thermally isolates the probe assembly, ensuring accurate measurement at temperatures near 0°C.
When used with an All Weather Inc. AWOS, the Model 6495 reports frequency values once each minute. The system then combines this information with data from other sensors on the AWOS to generate freezing rain reports.