Lufft WS503 all-in-one compact weather station
The Lufft WS503 is ideal for measuring air temperature, relative humidity, solar irradiance, and air pressure. It is suitable for high-end applications where accuracy and build quality cannot be compromised.
The sensors are protected by a radiation shell for protection and to ensure measurement accuracy, making the WS503 compliant according to WMO guidelines.
The top-mounted pyranometer provides accurate solar irradiance measurements. The pyranometer is tiltable, this allows plane of array measurements as well as standard GHI.
The WS503 is suitable for all climates, with a temperature range of -50 to +60 °C. There are no moving parts and data processing is built-in. This makes the WS503 incredibly robust and easy to use.
As standard, we supply the Lufft WS503 with Modbus communications. However, it is possible to supply the sensor with SDI-12. Please let us know at the time of ordering which you would prefer.
As with all WS series compact weather sensors, it is possible to fit a temperature probe. The probe measures surface temperature and is ideal for the PV solar sector to measure the back of panel temperature.
|Dimensions||Ø approx. 150mm, height approx. 392mm|
|Interface||RS485, 2-wire, half-duplex|
|Power supply||11 to 32 VDC|
|Power supply||5 to 11 VDC (electronics with limited precision of measurements)|
|Power supply||24 VDC +/- 10% (heater)|
|Power consumption||20 VA (heater)|
|Operating temperature||-50 to 60°C (with heater)|
|Operating rel. humidity||0 to 100% RH|
|Protection level housing||IP66|
|Standards/Regulations||Compliant to IEC 61724-1:2017 Class C|
|Mast mounting suitable for||mast diameter 60 – 76mm|
|Measuring range||-50 to 60 °C|
|Accuracy||±0.2 °C (-20 to 50 °C), otherwise ±0.5 °C (>-30 °C)|
|Measuring range||0 to 100 % RH|
|Accuracy||±2 % RH|
|Measuring range||300 to 1200 hPa|
|Accuracy||±0.5 hPa (0 to 40 °C)|
Radiation ( Tiltable Pyranometer non-CMP/SMP)
|Response time (95%)||< 18 s|
|Non-stability (change/year)||< 1 %|
|Non-linearity (0 to 1,000W/m²)||< 1 %|
|Directional error (at 80° with 1,000W/m²)||< 20 W/m²|
|Temperature dependence of sensitivity||< 5 % (10 to +40 °C)|
|Tilt error (at 1000W/m²)||< 1 %|
|Spectral range||300 to 2800 nm|
|Measuring range||2000 W/m²|
|Altitude||0 to 60 °|
|Measuring range||0 to 359.9 °|
|Accuracy||< 3 ° RMSE > 1.0 m/s|
|Measuring range||0 to 75 m/s|
|Accuracy||±0.3 m/s or ±3 % (0 to 35 m/s) ±5 % (>35 m/s) RMS|
|Measurement range||0 to 359°|
|Sampling rate||5 minutes|
WS Series Frequently asked questions.
How do I mount my WS sensors?
The sensor can be mounted directly onto a 60mm diameter pole. The sensors come with ‘U’ mounting brackets. A mounting arm (which can attach to 40-80mm diameter poles) can be supplied too.
Are other communications protocols possible?
Possible interfaces are RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR, and SDI-12.
What data logger is the WS503 compatible with?
The WS503 is compatible with many commercially available Met/HydroMet dataloggers and PLS systems thanks to an open communication protocol.
- External temperature probe (can be used as a back of module temperature sensor)
- Rain gauge Lufft WTB100