RWS-20 Road Weather Sensor

Model: RWS-20 Make: BIRAL

Key Highlights

    *The RWS-20 sensor typically monitors the following environmental parameters. *Measurand: Road Surface Temperature *Sensor Type: Thermistor or RTD, Road Surface Condition Sensor *Signal Output: Analog Output 4-20 mA or 0-10, Digital Output Modbus RTU, RS-485, or CAN bus *Supplied With: Calibration Certificate, User Manual.

Category: Visibility Sensors

Any sensors or measurement systems located at the side of the carriageway have to be able to withstand both the dirty and potentially corrosive environmental conditions (salt spray in winter, dirty water spray at other times), but also have to operate largely independently and for extended periods of time as access can often be restricted. The RWS-20 visibility sensor is specifically designed for harsh road-side conditions found around the world. The sensor housing is a very robust aluminium enclosure which is sealed against dirt and water ingress (IP66/67) and designed to withstand the rigours of 24/7 unattended operation. The measurement windows are protected by hoods which are designed to reduce the amount of dirt and external light reaching the optics.

The 10m to 7.5km measurement range on the RWS-20 is optimal for use in road applications.  Heating of the optical windows prevents misting and the optional sensor hood heating can be provided, allowing use in the harshest of conditions. Both optical windows are monitored for contamination and the visibility output is automatically compensated to reduce maintenance requirements.

Application


*Winter Road Maintenance *Weather Forecasting and Research *Smart City Infrastructure *Maintenance and Durability *Accuracy and Calibration

Feature


*10m to 7500m measurement range *Compact forward scatter design *Optional hood heating for use in extreme winter environments *Window heating and contamination monitoring *Optional 4-20 mA and relay outputs *Analogue voltage output (0-10V) *Comprehensive self-test capabilities *Serial data output (RS232, RS422 or RS485)

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