User manual VAISALA PWD52 DATASHEET

[. . . ] www. vaisala. com Vaisala Present Weather Detector PWD52 Automated observation networks need to operate with maximum reliability. [. . . ] The sensor optics are well-protected against contamination: the optical components point downwards and hoods protect the lenses against precipitation, spray and dust. This weather-proof design helps sustain accurate measurement results. The optional hood heaters prevent the buildup of ice and/or snow in the optical path. Solid Track Record Thousands of PWD series sensors have been installed all around the world. They have proved their robustness in the harshest climates and most demanding conditions, ranging from offshore to desert and from airport to roadside. Robust and Dependable Three measurement methods are used in the PWD52 continuously, independently, and simultaneously thus reducing false alarm rates to a minimum. The identification of precipitation type is reliable due to sophisticated algorithmic processing of complementary data from multiple sources. The downward-facing sensor hoods protect the optical surfaces from contamination, resulting in low maintenance needs and costs. Technical Data Visibility measurement Operating principle Measurement range (MOR) Accuracy Forward scatter measurement 10 . . . 35 km Environmental Operating temperature Operating humidity Protection class -40 . . . 100 %RH IP66 Present weather Identifies 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 the WMO 4680 code table- Electromagnetic compatibility CE-compliant Compliance has been verified according to the following EMC directives Verification subject Standard Radiated emissions CISPR 16-1, 16-2 Radiated susceptibility IEC 61000-4-3, 10 V/m Conducted emissions CISPR 16-1, 16-2 Conducted susceptibility IEC 61000-4-6 EFT immunity IEC 61000-4-4 ESD immunity IEC 61000-4-2 Surge IEC 61000-4-5 Reports Precipitation measurement Measures Precipitation type, intensity, accumulation and amount of new snow 0. 05 mm/h or less, within 10 minutes Precipitation detection sensitivity Mechanical Weight Dimensions 3 kg (6. 61 lb. ) 222 mm (h) x 695 mm (w) x 432 mm (d) (8. 73" (h) x 27. 35 " (w) x 16. 99"(d)) Electrical Power supply Power consumption Options luminance sensor hood heaters Outputs 12 - 50 VDC (electronics) 24 VAC or 24 VDC for hood heater option 6W 2 W (24 V) 65 W (24 V) RS-232 or RS-485 (2-wire) Three programmable relay controls (open collector), visibility alarm threshold and delays configurable, fault alarm relay 0 . . . 20 mA analog current Accessories/options Interface unit with power supplies Pole Mast Hood heaters for winter conditions Support arm for mast installations Pole clamp kit for mast top installations Luminance sensor PWL111 Calibration set PWA12 Maintenance cable 16385ZZ 115/230VAC The PWD52 is well suited for meteorological and environmental observation networks. For more information, visit www. vaisala. com or contact us at sales@vaisala. com RAINCAP® is a registered trademark of Vaisala. Ref. [. . . ] All specifications -- technical included -- are subject to change without notice. [. . . ]