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WS501 Ultrasonic Weather Sensor with Solar Pyranometer

air temperature / relative humidity / air pressure / wind speed / wind direction / solar radiation

From the WS product family of professional intelligent measurement transducers with digital interface for environmental applications. Comes with 10m cable.

Integrated design with ventilated radiation protection for measuring:

  • Air temperature
  • Relative humidity
  • Air pressure
  • Wind direction
  • Wind speed
  • Solar Radiation

Available with low-power setting for remote stations with solar power.

Measurement output can be accessed by the following protocols: ASCII, UMB, SDI12, MODBUS

Dimensions Ø ca. 5.09" (150mm), Height approx. 11.42" (290mm)
Weightapprox. 2.87bs (1.3kg)
Measuring range-58...140°F (-50...60°C)
Accuracy±0.2°C (-4...122°F/ -20°C...+50°C), otherwise ±0.5°C (>-22°F/-30°C)
Relative humidity
Measuring range0…100% RH
Accuracy±2% RH
Response Time (95%)18s
Non-stability (change/year)±1%
Non-linearity (0 to 1,000 W/m2)±2.5%
Directional error (at 80° with 1,000W/m2)±20W/m2
Temperature dependence of sensitivity±5% (-10 to +40°C)
Tilt error (at 1,000W/m2)±3%
Spectral range (50% points)300 to 2,800nm
Typical signal output for atmospheric applications0 to 20mV
Operating temperature-40 to +80°C
Maximum irradiance1,500W/m2
Air Pressure
PrincipleMEMS capacitive
Measuring range300...1200 hPa
Wind direction
PrincipleUltrasonic- 2.4 Ghz
Measuring range0…359.9°
Wind speed
PrincipleUltrasonic- 2.4 Ghz
Measuring range0…75m/s
Accuracy±0.3m/s or ±3% (0…35m/s)
General Information
Heating40 VA at 24 VDC
Protection type housingIP66
InterfaceRS 485 2-wire, half duplex
Operating power consumption24 VDC +/- 10% < 4VA (without heating)
Operating humidity range0...100%
Operating temperature range-58...140°F (-50...60°C)
WS 20m Cable8370.UKAB20 (Other lengths available)

More specs and info on WS501 are available in our downloadable PDF brochure.

for more information on WS501 Ultrasonic Weather Station with solar sensor or call 805-963-7547.

Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. Ultrasound sensor technology is used to take wind measurements. Measurement data are available for further processing in the form of a standard protocol (Lufft-UMB protocol).

CMP3 Solar pyranometer
Ultrasonic wind sensor
Maintenance-free operation
Open communication protocol:
Analog outputs in combination with 8160.UDAC

Complementary Products:
Surge Arrester-UMB Surge Arrester.
WS301 Ultrasonic weather sensor with solar pyranometer-air temperature/ relative humidity/ air pressure/ solar radiation.
WS500 Ultrasonic Weather Sensor-Temperature/ Relative Humidity/ Air Pressure/ Wind.

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Phone: (805)963.7547 Fax: (805)966.7659