Campbell Scientific, Inc.
|
815 W 1800 N
|
Logan, UT 84321-1784
|
(435) 227-9000
|
www.campbellsci.com
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© 2009, 2013
Campbell Scientific, Inc.
January 7, 2014
c
When the bird spike kit is attached to the WXT520, more snow can accumulate on the WXT520, and the snow may melt slower.
d
Due to the nature of the phenomenon, deviations caused by spatial variations may exist in precipitation readings, especially in short time scale.
Ordering Information
Weather Transmitter
WXT520
Weather Sensor (requires a sensor cable; see options below)
Cable Options (choose one)
-2
2 m Sensor Cable
-10
10 m Sensor Cable
Accessories
CM220
Right Angle Mounting Bracket for attaching the WXT520 to a
Campbell Scientific crossarm
17953
1-in x 1-in NU-RAIL Fitting for mounting the WXT520 to a
Campbell Scientific crossarm
25299
Optional WXT520 IP66 Mounting Kit.
25300
Bird Spike Kit for the WXT520.
Specifications
Electromagnectic Compatibility: Complies with EMC standard
EN61326-1
IEC Standards: IEC 60945/61000-4-4, IEC 60945/61000-4-2
Input Voltage: 5 to 30 Vdc (below 5.3 V the measurement per-
formance for high wind speeds may be degraded)
Typical Current Drain @ 12 Vdc: 0.1 mA (SDI-12 standby); 3 mA
(Default Measuring Intervals)
Output: SDI-12
Operating Temperature Range: -52° to +60°C
Storage Temperature: -60° to +70°C
Operating Relative Humidity: 0 to 100% RH
Height: 23.8 cm (9.38 in)
Diameter: 11.5 cm (4.52 in)
Weight: ~ 650 g (1.43 lb)
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 to 90% RH
90 to 100% RH
±3% RH
±5% RH
Output Resolution: 0.1% RH
Wind Speed
Measurement Range: 0 to 60 m s
-1
Response Time: 0.25 s
Accuracy
0 to 35 m s
-1
36 to 60 m s
-1
±0.3 m s
-1
or ±3% whichever is greater
±5%
Wind Direction
Measurement Range: 0° to 360°
Response Time: 0.25 s
Accuracy: ±3°
Output Resolution: 1°
Precipitation
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Rainfall Measurement: Cumulative accumulation after latest
automatic or manual reset
Collecting Area: 60 cm
2
Field Accuracy for Daily Accumulation: Better than 5% (weath-
er dependent; does not include possible wind induced error)
Rain Duration: Counting each 10-s increment whenever drop-
let 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)
Accessories
The WXT520 is shipped with a mounting tube that fastens to a
Campbell Scientific crossarm via the CM220 Right Angle Mounting
Bracket or 17953 1-in. x 1-in. NU-RAIL Fitting.
The 25299 is an optional mounting kit for the WXT520. It
provides better water protection. When using the 25299, the
WXT520’s IP classification is IP66; otherwise its classification is
IP65. The 25299 fastens to a crossarm via the CM220 bracket or
17953 NU-RAIL fitting.
The 25300 Bird Spike Kit
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is used to discourage birds from roosting
on the WXT520. This kit is fastened on top of the WXT520. It con-
sists of a metallic band with spikes pointing upward. The spikes’
shape and location ensure minimal interference of wind and rain
measurements. The spikes are designed not to hurt the birds.
