Item No: 8374-U01

Lufft WS301 Ultrasonic weather sensor with solar pyranometer

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Product Description

Lufft WS301 Ultrasonic weather sensor with solar pyranometer
Lufft WS301 Ultrasonic weather sensor with solar pyranometer

For: air temperature / relative humidity / air pressure / solar radiation

Integrated design with ventilated radiation protection for measuring:
  • Air temperature
  • Relative humidity
  • Air pressure
  • Solar Radiation
Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. Measurement data are available for further processing in the form of a standard protocol (Lufft-UMB protocol).

CMP3 Solar pyranometer. Aspirated temperature/ humidity measurement. Open communication protocol:
  • UMB
  • SDI12
  • Analog outputs in combination with 8160-UDAC
Available with low-power setting for remote stations with solar power.

Specifications and additional product information
Lufft WS301-UMB 8374-U01
Dimensions Ø approx. 5.09" (150mm), Height approx. 8.85" (225mm)
Weight approx. 4.4lbs (2kg)
Principle NTC
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
Principle capacitive
Measuring range 0…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 applications 0 to 20mV
Operating temperature -40 to +80°C
Maximum irradiance 1,500W/m2
Air Pressure
Principle MEMS capacitive
Measuring range 300...1200 hPa
Accuracy ±0.5hPa
General Information
Protection type housing IP66
Interface RS 485 2-wire, half duplex
Operating power consumption 24 VDC +/- 10% < 4VA (without heating)
Operating humidity range 0...100%
Operating temperature range -58...140°F (-50...60°C)
Surge protection 8379-USP
Power supply 24 V/4 A 8366-USV1
RS485 to USB Cable 8160-RS485USB
Digital-analog-converter 8160-UDAC
20m Cable 8370-UKAB20 (Other lengths available)