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Datenlogger von Lufft

WS501-UMB Smart Weather Sensor | All-in-one sensors,Radiation


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

Supplementary description:

WS501-UMB Smart Weather Sensor for measuring of air temperature, relative humidity, solar radiation, air pressure, wind direction and wind speed. Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. The world renowned technology of Kipp+Zonen CMP3 is integrated. Ultrasonic sensor technology is used to take wind measurements. Measurement output can be accessed by the following protocolls: UMB-Binary, UMB-ASCII, SDI-12, MODBUS. One external temperature or rain sensor is connectable.

Special features:

  • All in One
  • Aspirated temperature/humidity measurement
  • Open communication protocol:
  • UMB-Binary
  • SDI-12
  • Analoge outputs in combination with 8160.UDAC
  • Third-Party-Rain gauge sensors are compatible: 0.1mm, 0.2mm, 0.5mm, 1mm heated and unheated.

Download - product data sheet


Photovoltaic-Monitoring - Solar-Log - Solare Datensysteme GmbH

When selecting a suitable pyranometer for photovoltaic monitoring the company Solare Datensysteme GmbH decided for the Lufft

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Price:On request
Quantity ordered:

Technical data

DimensionsØ approx. 150mm, height approx. 332mm
WeightApprox. 1.5kg
InterfaceRS485, 2-wire, half-duplex
Power supply4...32 VDC
Operating temperature-50...60°C
Operating rel. humidity0...100% RH
Heating20VA at 24VDC
Cable length10m
Response time (95%)<18s
Non-linearity (0 to 1000 W/m²)<1%
Directional error (at 80° with 1000 W/m²)<20 W/m²
Temperature dependence of sensitivity<5% (-10 to +40°C)
Tilt error (at 1000 W/m²)<1%
Spectral range (50% points)300...2800nm
Measuring range1400W/m²
Azimuth-10° … 10°
Protection level housingIP66
Mast mounting suitable formast diameter 60 - 76mm


Measuring range-50 ... 60 °C
Accuracy±0.2°C (-20...50°C), otherwise ±0.5°C (>-30°C)

Relative humidity

Measuring range0 ... 100 % RH
Unit% RH
Accuracy±2% RH

Air pressure

PrincipleMEMS capacitive
Measuring range300 ... 1200 hPa
Accuracy±0.5 hPa (0...40°C)

Wind direction

Measuring range0 ... 359.9 °
Accuracy< 3° RMSE > 1.0m/s

Wind speed

Measuring range0 ... 75 m/s
Accuracy±0.3m/s or 3% (0...35m/s) RMS of reading, whichever is greater ±5% (>35m/s) RMS
Resolution0.1 m/s


UMB_Technology_e.pdfBrochure UMB Technology (ENG)(6661KB)
WSx-UMB_V15_e.pdfManual WSx-UMB only up to unit version 029 (ENG)(5460KB)
WSx_Release_V31.zipFirmware for WSxxx only up to unit version 029(145KB)
UMB_Config_V24.zipSoftware UMB-Config-Tool(6155KB)
Wind_Weather_e.pdfBrochure Wind & Weather (EN)(5477KB)
WSx-UMB_V26_e.pdfManual WSx-UMB from unit version 030 (ENG)(7748KB)
WSx_Release_V47.zipFirmware for WSxxx from unit version 030(171KB)
Traffic_Weather_e.pdfBrochure Transportation & Weather (EN)(6875KB)
Download - product data sheetDownload - product data sheet(1400KB)


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Power supply 24V/4A Power supply 24V/4A8366.USV1
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Connection cable 20m Connection cable 20m8370.UKAB20