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  VIS-430 Visibility Sensor
   • DSP based – no field calibration required
 • Virtually no maintenance required
 • Outstanding performance yet low cost
 • Rugged = field proven from tropical to sub-arctic environments
 • Easy Installation and integration
 • Long-term reliability – designed for unattended operation 24/7/365
 • Unaffected by dust or buildup on lenses
 • Built-in self -diagnostics & testing
 • Enhanced EMI and surge protection
  VIS-430-DS is a state-of-the-art triple aperture, forward scatter visibility sensor. Unlike traditional two-headed visibility sensor designs, the VIS-430 does not require periodic field calibration. The VIS-430-DS is ideal for Road Weather Information Systems as well as Airport Automated Weather Observing Systems when present weather information is not required.

Performance Specifications  

Measurement Technique Optical Forward Scatter
Data Reporting Update Rate 10 Seconds
Visibility Dynamic Range
(metric and ANSI units)
0.01 to 10+ km (standard range)
0.01 to 25+ km (optional range)
0.01 to 50+ km (optional range)
  Visibility Accuracy 20%
  Visibility Contrast Threshold 5%
Ambient Light Dynamic
Measurement Range
0 to 9,990 candles / m2
Electronic Specification

Power Requirements 10-18 VDC, 3 A nominal
  Transient Protection All power & signal lines fully protected
  Signal Output RS-232 ASCII, simple polled protocoI
  Environmental Specification  
  Temperature -40 to 140 F (-40 to 60 C)

Humidity 0-100%
  Precipitation/Dust NEMA-4 type protectionn

Physical Specification  

Sensor Size 35 x 5 x 11 inches (890 x 130 x 280 mm)

Sensor Weight 10 lbs. (4.5 kg)

Head & Enclosure Cable Length 25 ft. (7.7 meter)


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