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WS300-UMB Smart Weather Sensor | All-in-one sensors


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

Supplementary description:

WS300-UMB Smart Weather Sensor for measuring of air temperature, relative humidity and air pressure. Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. Measurement output can be accessed by the following protocolls: UMB-Binary, UMB-ASCII, SDI-12, MODBUS

Special features:

  • Aspirated temperature/humidity measurement
  • Open communication protocol:
  • UMB-Binary
  • SDI-12
  • Analoge outputs in combination with 8160.UDAC

Download - product data sheet


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Technical data

DimensionsØ approx. 150mm, height approx. 223mm
WeightApprox. 1kg
InterfaceRS485, 2-wire, half-duplex
Power supply4...32 VDC
Operating temperature-50...60°C
Operating rel. humidity0...100% RH
Cable length10m
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)


UMB-Protokoll 1_0 Version 1_6_e.pdfUMB Protocol (ENG)(904KB)
UMB-Config-Tool_V26_e.pdfUMB-config-tool instruction (ENG)(1617KB)
SmartView3_V2_7_2_en.pdfManual SmartView3 (ENG)(3537KB)
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_V27.zipSoftware UMB-Config-Tool(6969KB)
Wind_Weather_e.pdfBrochure Wind & Weather (ENG)(7470KB)
SmartView3_Database_Tables_V2_3_1.pdfDatabase Tables SmartView3 (ENG)(878KB)
WSx-UMB_V29_e.pdfManual WSx-UMB unit version 030 up to 049 (ENG)(7998KB)
WSx_Release_V58.zipFirmware for WSxxx from unit version 030(374KB)
ConfigTool_NET_V1_1.zipSoftware UMB-Config-Tool .NET(11482KB)
Traffic_Weather_e.pdfBrochure Transportation & Weather (ENG)(7531KB)
WSx-UMB_V33_e.pdfManual WSx-UMB from unit version 200 (ENG)(3793KB)
Download - product data sheetDownload - product data sheet(1400KB)


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