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Vaisala Present Weather Detectors PWD12 and PWD22 and Vaisala Visibility Sensors PWD10, PWD20 and PWD20W

All models:

  • Accurate measurement of visibility
  • Compact and light-weight
  • Easy to install

Additionally PWD12 and PWD22 models:

  • Indicate the cause of reduced visibility
  • Identify precipitation type
  • Measure the intensity and accumulation of precipitation
  • Estimate snow accumulation

Visibility Sensor PWD20W for Wind Turbines:
Obstruction lights are used for marking the Wind Turbines for aviation safety. Some countries have established regulations for reducing the intensity of the obstruction lights basing on visibility. Wind Turbines can be equipped with Vaisala Visibility Sensor PWD20W, which is designed for this application. Several manufacturers have chosen Vaisala PWD20W due to its robustness and versatility.

 

Visibility (MOR) measurement

PWD10 and PWD12:
     Measurement range
PWD20, PWD20W and PWD22:
     Measurement range


10 ... 2000 m (32 ft ... 1.2 miles)


10 ... 20 000 m (32 ft ... 12 miles)

Present weather

PWD12:
     Identifies


     Reports


PWD22:
     Identifies


     Reports


4 different types of precipitation (rain, drizzle, mixed rain/snow, snow)
Fog, mist, haze (smoke, sand) or clear
WMO 4680 (SYNOP) and NWS code tables
39 different codes supported from WMO 4680 code table

7 different types of precipitation (rain, freezing rain, drizzle, freezing drizzle, mixed rain/snow, snow, ice pellets)
Fog, mist, haze (smoke, sand) or clear.
WMO 4680 (SYNOP), 4678 (METAR) and NWS code tables
49 different codes supported from WMO 4680 code table

Operating environment

Temperature
Humidity

-40...+60 °C
0...100 %RH

Inputs and outputs

Outputs
Operating voltage

Power consumption
     PWD10, PWD20 and
     PWD20W
     PWD12 and PWD22

RS232, RS485, analog current, relay control
12 VDC ... 50 VDC (electronics)
24 VAC or 24 VDC for heater option

3 W (electronics with dew heater @ 12VDC)

6 W

Mechanics

Dimensions

Weight

40.4 (w) x 69.5 (l) x 19.9. (h) cm
(15.91" (w) x 27.36" (l) x 7.83" (h))
3 kg (7 lb)

For complete specifications, please see the brochure or user guide in "Product Documentation".

Brochures

Typical delivery times

 

  USA

  EUROPE

  JAPAN, CHINA, ASIA

  1 - 5 products

  2 weeks

  2 weeks

  2 weeks

  1 - 15 products

  4 weeks

  4 weeks

  4 weeks

Spare parts

Common spare and wearing parts are available. For availability contact sales.

Repair

Repair services are available at Vaisala service centers for a fixed price.

Repair price includes:
-repair work
-required parts
-calibration certificate
-service report

Technical support

Technical support for your installed units, contact helpdesk@vaisala.com.

PWD12/PWD22 Present Weather Sensors and PWD10/PWD20 Visibility Sensors

This page was printed from www.vaisala.com on Oct 11, 2008
URL: http://www.vaisala.com/weather/products/weatherinstruments/visibility/pwd