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© 2012
Campbell Scientifi c
January 28, 2013
Wind speed
Measurement Range: 0 to 60 m s
-1
Response Time: 0.25 s
Accuracy: ±3% at 10 m/s
Wind Direction
Measurement Range: 0° to 360°
Response Time: 0.25 s
Accuracy: ±3°
Output Resolution: 1°
Precipitation
Rainfall Measurement: Cumulative accumulation after latest
automatic or manual reset.
Collecting Area: 60 cm
2
Output Resolution: 0.01 mm (0.001”)
Field Accuracy for Daily Accumulation:
Better than 5% (weather dependent); due to the nature of the
phenomenon, deviations caused by spatial variations may exist in
precipitation readings, especially in short time scale. The accuracy
specifi cation does not include possible wind induced error.
Rain Duration: Counting each 10-s increment whenever droplet
detected.
Rain Intensity: 1-min. running average in 10-s steps.
Rain Intensity Range: 0 to 200 mm hr
-1
(broader range possible with
reduced accuracy)
Air Temperature
Measurement Range: -52° to +60°C
Accuracy: ±0.3°C @ +20°C
Output Resolution: 0.1°C
Barometric Pressure
Measurement Range: 600 to 1100 hPa
Accuracy: ±0.5 hPa @ 0° to 30°C; ±1 hPa @ -52° to +60°C
Output Resolution: 0.1 hPa
Relative Humidity
Measurement Range: 0 to 100% RH
Accuracy: ±3% RH @ 0 to 90% RH; ±5% RH @ 90 to 100% RH
Output Resolution: 0.1% RH
Assembly
Electromagnectic Compatibility
Complies with EMC standard EN61326-1;
IEC standards: IEC 60945/61000-4-4, IEC 60945/61000-4-2
Input Voltage: 5 to 30V DC (below 5.3V the measurement
performance for high wind speeds may be degraded)
Typical Current Drain @ 12V DC:
0.1 mA (SDI-12 standby)
3 mA (default measuring intervals)
Output: SDI-12
Compatible Dataloggers: CR200-series, CR800, CR850, CR1000,
CR3000, CR5000, CR510, CR10(X), CR23X
Operating Range: -52° to +60°C; 0 to 100% RH
Storage Temperature Range: -60° to +70°C
Height: 23.8 cm (9.38”)
Diameter: 11.5 cm (4.52”)
Weight: 650 g (1.43 lbs)
Specifi cations
Ordering Information
WXT520
Vaisala Weather Sensor (requires a sensor cable; see options below)
-2
2 m Sensor Cable
-10
10 m Sensor Cable
Accessories
008285
NU-RAIL. Fitting for mounting the WXT520 to a crossarm, such as a CM202, CM204, or CM206.
#25299
Optional WXT520 IP66 Mounting Kit
#25300
Bird Spike Kit for the WXT520 Radiation Shield that houses the temperature, RH, and barometric pressure sensors.
Bird Spike Kit
The #25300 Bird Spike Kit is used to discourage birds from
roosting on the WXT520. This kit is fastened on top of the
WXT520. It consists of a metallic band with spikes pointing
upward. The spike’s shape and location ensure minimal
interference of wind and rain measurements. The spikes are
designed not to hurt the birds. Please note that when the
kit is attached to the WXT520, more snow can accumulate
on the WXT520, and the snow may melt slower.
