PWS100 Present Weather Sensor

The PWS100 is a laser-based sensor that measures precipitation and visibility by accurately determining the size and velocity of water droplets in the air. It can be used in weather stations in road and airport applications.

Due to its advanced measurement technique and fuzzy logic algorithms, the PWS100 can determine individual precipitation particle types from accurate size and velocity measurements and the structure of the received signal. Auxiliary measurements of temperature and relative humidity (RH) provide improved particle classification.

Benefits and Features

  • Unique calibration kit available to calibrate particle size and speed measurement to give confidence in reliable measurement of present weather parameters
  • Identifies many precipitation types, including drizzle, rain, snow, hail, and graupel
  • Patented four beam, two receiver system directly measures hydrometeor size and velocity
  • Reports MOR Visibility in range 0 to 20,000 m with programmable alarm

 

Key Specifications

  • Measuring Area: 40 cm2 per light sheet
  • IP Rating: IP 66 (NEMA 4X)
  • Communication: RS-232, RS-422, or RS-485
  • Power Requirements:DSP Power 9 to 24 Vdc;Current Consumption 200 mA to 1 A;Hood Heater 24 Vac or dc, 7 A
  • Laser Source: Near-infrared diode, eye safe Class 1M unit output; Peak Wavelength 830 nm
  • Particle Size Measurement: 0.1 to 30 mm
  • Size Accuracy ±5% (for particles greater than 0.3 mm)
  • Rain Rate Intensity Range: 0 to 999.9 mm/h-1
  • Visibility Range: 0 to 20,000 m
  • External Sensors: SDI-12 compatible sensors supported (such as the CS215-PWS Temperature and RH Probe)

 

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