WXT520 Automatic Weather Transmitter

The new Vaisala WXT-520 automatic weather transmitter contains all of the standard parameters of a weather station packed into a single, compact case. Parameters include air temperature, relative humidity, barometric pressure, wind speed and direction (using a top quality sensor), plus a revolutionary electronic precipitation gauge that can not only detect rain, but also its intensity - and even hail! With the parameter range and accuracy of this unit we believe it can't be bettered for the price.

The WXT-520 is an extremely flexible product. Many of the sensors parameters, like sampling slot time and sampling interval, can easily be programmed to adapt the sensors performance to a large variety of different applications. With it's extremely compact design it's very easy to install , and no moving parts makes it extremely easy to maintain.

Its low power consumption makes it a good match for an Adcon RTU, to which it is connected either directly (Series 4 RTUs: A723, A753, A755) or via the A506 SDI-12 interface (Series 3 RTUs: A723, A733).

Features
Specifications
Applications
Downloads

Essential weather parameters in cost efficient package
Measurement parameters are integrated into one multiparameter platform
Flexible selection measurement parameters available
Weather parameter hub having analog input options
Set of 3rd party analog sensors can be connected (T, S.R, Level, T.P.)
Digital interface incorporates also analog input parameters
Separate Data and Service ports
Analog output options
Wide variety of digital communication modes
Complies ISO60945 standard for maritime use
DNV certificate approval process on-going
Wide range of operating and heating voltages
Compact, light-weight
Easy to install
No moving parts
Configuration Tool for PC
Works also with solar panels
USB connectivity
IP66 housing with the mounting kit
Machine-to-machine interface

Vaisala WXT520 Data Sheet (pdf 348 KB )

General
Electromagnetic 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 performance 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 Range	-60° to +70°C
Operating Relative Humidity	0 to 100% RH
Diameter	11.5 cm (4.52 in.)
Height	23.8 cm (9.38 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	±0.5 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

Wind Speed
Measurement Range	0 to 60 m s^-1
Response Time	0.25 s
Accuracy	±0.3 m s^-1 or ±3% whichever is greater (0 to 35 m s^-1) ±5% (36 to 60 m s^-1)

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 cm² (9.3 in.²)
Output Resolution	0.01 mm (0.001 in.)
Field Accuracy for Daily Accumulation	Better than 5% (weather dependent; 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 h^-1 (broader range possible with reduced accuracy)

Vaisala-Wind-Weather-Technology (pdf 394 KB)

WEA-MET-G-WXT520 Brochure (pdf 260KB)
WXT520_User_Guide_in_English (pdf 2 MB)

General

Air Temperature

Barometric Pressure

Relative Humidity

Wind Speed

Wind Direction

Precipitation

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