WXT520
WXT520
RetiredConfigurableWeather Sensor
Pricing
- Model:
- WXT520
- Item Number:
- 25297
- Warranty:
- 1 year
- Lead time:
- 14 days
Overview
The WXT520, manufactured by Vaisala, is a solid-state, all-in-one weather instrument that measures wind speed and direction, precipitation, barometric pressure, temperature, and relative humidity. Its small size makes it ideal for quick, short-term deployments. However, the WXT520 is not intended for weather stations that require research-grade performance.
Technical Description
The WXT520's wind sensor consists of three equally spaced transducers that produce ultrasonic signals. Wind speed and direction are determined by measuring the time it takes for the ultrasonic signal of one transducer to travel to the other transducers.
Precipitation is measured one raindrop at a time. Whenever a raindrop hits the precipitation sensor, an electrical signal is produced that is proportional to the volume of the drop.
The WXT520 has a PTU module that contains a capacitive silicon BAROCAP sensor for barometric pressure measurements, a capacitive ceramic THERMOCAP sensor for air temperature measurements, and a capacitive thin film polymer HUMICAP sensor for relative humidity measurements. The PTU is housed in a naturally-aspirated radiation shield that protects it and reflects solar radiation.
Benefits
- Low maintenance—no moving parts significantly reduces maintenance cost and time
- Compact and lightweight
- Low power consumption
- Fast and simple to install
- Outputs an SDI-12 signal that can be measured by many of our dataloggers
- Combines the six most essential weather parameters in one instrument
Specifications
- 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)
- Typical Current Drain @ 12 Vdc
- 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)
- Accuracy
- ±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)
- Accuracy
- ±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)
- Accuracy
- ±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)
