Vaisala Road / Runway Surface and Depth Sensor DRS511


Several measurements combined compactly in one sensor:

  • Surface Temperature Sensor
  • Ground Temperature Sensor at 60mm depth
  • Additional Depth Temperature Sensor at 300mm depth
  • Depression of Freezing Point  /  Chemical Amount
  • Black Ice Detection
  • Surface State; (water / ice layer thickness, presence of snow):
    • Dry
    • Moist
    • Wet
    • Frost
    • Ice
    • Snow
    • Trace (Moist & Treated)
    • Wet & Treated
  • Alarms and Warnings
    • Rain Warning
    • Frost Warning
    • Ice Warning
    • Ice Alarm
  • Thermally passive principle - does not disturb the measured surface
  • Thermal properties matched to road properties
  • 3cm wide so thermal characteristics adjust to match the road very quickly - improved accuracy
  • Robust epoxy design; the sensor may wear down by as much as 35mm
  • Can be installed in wheel track
Road / Runway Surface and Depth Sensor DRS511