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This product is no longer available. Some accessories, replacement parts, or services may still be available.
IRS21 Road Surface Sensor
Services Available
Repair Yes
Calibration Yes
Free Support Yes

Überblick

The IRS21 is a passive sensor embedded in the monitored road surface, flush with the surface, to provide measurements of actual road conditions. It measures surface temperature, water-film level, freezing temperature for NaCl, and road condition (dry, damp, wet, ice or snow, residual salt, freezing). The IRS21 is a primary component of our road-weather information stations (RWIS). Two IRS21 sensors are typically installed at each measurement site.

An SDM-SIO1 or other RS-485 to RS-232 converter is required for communication with Campbell Scientific dataloggers.

 

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Technische Beschreibung

The IRS21 Intelligent Road Surface Sensor is a primary component of our Road Weather Information Stations (RWIS). This passive sensor is typically embedded in the monitored road surface, flush with the surface, to provide measurements of actual road conditions. Two IRS21 sensors are typically installed at each measurement site.

The IRS21 measures the following parameters:

  • Road surface temperature
  • Water film level (up to 4 mm)
  • Freezing temperature for NaCl (others on request)
  • Road condition (dry/damp/wet/ice or snow/residual salt/freezing)


Spezifikationen

  • Power Requirements: 9 to 14 Vdc; less than 200 mA
  • Interface: RS-485
  • Road Condition Output: dry, damp, wet, snow,
    freezing wetness, ice
  • Road Temperature Measurement Range: -40º to +70ºC
  • Road Temperature Accuracy: ±0.2ºC (-10º to 10ºC); ±0.5ºC (-40º to 70ºC)
  • Road Temperature Resolution: -0.1ºC
  • Freezing Point Range: -20º to 0ºC (-4º to +32ºF)
  • Freezing Point Accuracy: ±0.1ºC
  • Freezing Point Resolution: -0.1ºC

Kompatibel mit

An SDM-SIO1 or other RS-485 to RS-232 converter is required for communication with Campbell Scientific dataloggers.

Dokumente

Downloads

IRS21 Luftt Road Surface Sensor Epoxy Calculation (75 KB) 10-10-2006

Spreadsheet for calculating epoxy fill needed for road sensor installation