Passive road sensor IRS31 is flush-mounted in the road. The two part housing design allows the combined sensor / electronics unit to be removed for maintenance or calibration at any time.

The following variables are recorded: road surface temperature; water film height up to 4 mm; freezing temperature for different de-icing materials such as NaCl, MgCl, CaCl; road condition (dry, damp, wet, moist with salt, wet with salt, ice); friction (grip); ice percentage.
Optional - 2 additional depth temperatures.

FEATURES

• REPLACEABLE SENSOR / ELECTRONICS
• EASY MAINTENANCE / RECALIBRATION
• LOW ENERGY CONSUMPTION (SOLAR OPERATION)
• RADAR PRINCIPLE TO MEASURE WATER FILM
• POLLING VIA RS485 INTERFACE
• ANALOGUE OUTPUTS