RWIS Road Visibility Sensor - Model 5434-00
RWIS Road Visibility Sensor - Model 5434-00

 

 

FEATURES:

 

  • 9.9 miles (16 km) Visibility Range
  • Flexible Output Options
  • Ice-Resistant “Look Down” Geometry
  • Simple Installation & Maintenance

 


 

DESCRIPTION:

      RWIS Road Visibility Sensor Coastal Application

 

RWIS Visibility Sensor Coastal Application

 

The RWIS Road Visibility Sensor - Model 5434-00 measures atmospheric visibility for use in Road Weather Information System (RWIS) Environmental Sensor Stations (ESS). The RWIS Road Visibility Sensor is designed to perform in all types of weather conditions. An integrated, one-piece housing keeps all cabling internal to the RWIS Road Visibility Sensor for ultimate protection against the elements. The RWIS Road Visibility Sensor housing is made from anodized aluminum and the enclosures are rugged, UV-resistant fiberglass rated to IP66. Based on the proven experience of the NWS and FAA, the RWIS Road Visibility Sensor uses a “look down” geometry to reduce window contamination and clogging from blowing snow. The windows use continuous-duty anti-dew heaters. As an option, thermostatically controlled external hood heaters are offered for protection in extreme environments. All power and signal lines to the RWIS Road Visibility Sensor are protected with surge and EMI filtering to help guarantee uninterrupted service for the life of the sensor.

Installation and maintenance is minimal for the RWIS Road Visibility Sensor. A flange located on the bottom of the RWIS Visibility Sensor signal processing box mates with a user supplied 1-1/2 inch IPS pipe. Power and signal connections are made through waterproof cable glands to terminal boards in the RWIS Road Visibility Sensor's Signal Processing Box.

Calibration of the RWIS Road Visibility Sensor in the field is as simple as connecting a factory supplied calibration fixture and following a simple procedure that takes less than 30 minutes. HSE recommends annual calibration for the RWIS Road Visibility Sensor.


 

APPLICATIONS:

  • Airports
  • Bridges/Roads
  • Maritime
  • Tunnels

 

SPECIFICATIONS:

Visibility Range ...........................   32.8 ft to 9.9 mi (10 m to 16 km) (other ranges available)
Accuracy ...........................   ±10%
Time Constant ...........................   60 Seconds
Scatter Angle ...........................   42° Nominal
Source ...........................   880 nm LED
Outputs ...........................   0 to 10 VDC Standard
0 to 5 VDC Optional
4 to 20 mA Current Loop Optional
Control Relay (2) Optional
Operating Temperature ...........................   -40° to 140° F (-40° to 60° C)
Humidity ...........................   0 to 100%
Power
     AC Version ...........................   100 to 240 VAC, 14 W; 70 W w/Hood Heaters
     DC Version ...........................   9 to 18 VDC, 7 W
Mounting ...........................   1-1/2 inch IPS pipe, 1.9 inch OD max (Nominal 40 mm ISO pipe, 48 mm OD max)
Enclosure ...........................   NEMA 4X
Dimensions ...........................   35x11.5x12 in (889x292x305 mm) (WxHxD)
Weight ...........................   18 lb (8 kg)
Shipping Weight ...........................   25 lb (11.3 kg)
Protection ...........................   IP66
Certification ...........................   CE Marked

 

ORDERING GUIDE:
HSE Warranty
General Terms and Conditions

Model 5434-00 ......... RWIS Road Visibility Sensor, with DC Power, 0-5 V Analog Output and Hood Heater

OPTIONAL:
Model 5434-01 ......... Hood Heaters
Model 5431-02 ......... Field Calibration Fixture
Model 5434-03 ......... Signal Cable, 22 AWG, 2-Twisted Pair, Shielded


 

RELATED PRODUCTS:


Model 5438-00 ......... RWIS Present Weather and Visibility Sensor
Series 5433 ......... IceSight Remote Road Surface Condition Sensor
Model 5439-00 ......... Surface Sentinel Fixed Road Surface Temperature Sensor
Model 5436-00 ......... Surface Sentinel Mobile Surface Temperature Sensor with Mobile Display Unit
Model 5435-00 ......... RWIS Mobile IceSight Remote Road Surface Condition Sensor
Model 5721-05 ......... RWIS Road Sensor Station
Model 5470-02 ......... NTCIP Mini-RWIS Remote Processing Unit 12VDC
Model 5400-03 ......... NTCIP RWIS Remote Processing Unit, 115VAC
Other Weather Sensors


 

SUPPORT:

Other Road Weather applications: Applications
RWIS Road Visibility Sensor - Model 5434-00: Flood Warning System Overview and Planning Considerations
RWIS Road Visibility Sensor - Model 5434-00: Datasheet