RWIS Visibility Sensor – Model 5434

The RWIS Visibility Sensor – Model 5434 measures atmospheric visibility for use in Road Weather Information System (RWIS) Environmental Sensor Stations (ESS).

FEATURES:

  • Activate visibility warning signs
  • Low power for remote installations
  • Ice-Resistant “Look Down” Geometry
  • Simple Installation & Maintenance
SKU: 5434-00 Categories: , ,

Description

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%
AC Power 100 to 240 VAC, 14 W; 70 W w/Hood Heaters
DC Power 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 35 x 11.5 x 12 in (889 x 292 x 305 mm) (WxHxD)
Weight 18 lb (8 kg)
Shipping Weight 25 lb (11.3 kg)
Protection IP66
Certification CE Marked

 

Ordering Guide

 

Model 5434-00 RWIS Road Visibility Sensor, with DC Power, 0-5 V Analog Output and Hood Heater
OPTIONAL
Model 5434-01 Hood Heater
Model 5434-02 Field Calibration Fixture
Model 5434-03 Signal Cable, 22 AWG, 2-Twisted Pair, Shielded

 

 

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