WS310-UMB

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

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WS310 UMB

Key features

  • All-in-one housing concept of a compact weather sensor combining several measurement parameters in one housing with only one cable connection
  • First and only compact weather sensor with integrated Kipp & Zonen CMP10 Pyranometer with secondary standard quality
  • Built-in data pre-processing, universal interfaces and selectable output protocols
  • Maintenance-free operation – no moving parts that can wear out
  • Compatible with many commercially available Met/HydroMet data loggers and PLS systems thanks to an open communication protocol
  • Suitable for all climate zones; also for solar-powered automatic meteorological stations
  • Ventilated temperature and humidity measurement according to WMO guidelines
  • Integrated heater that can be switched on if there is danger of frost

The WS310-UMB Smart Weather Sensor for measuring of air temperature, relative humidity, solar radiation 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. The world renowned technology of Kipp & Zonen CMP10 is integrated. Measurement output can be accessed by the following protocols: UMB-Binary, UMB-ASCII, SDI-12, MODBUS. One external temperature or rain sensor is connectable.

Technical specification

General

Dimensions Ø approx. 150 mm, height approx. 332 mm
Weight Approx. 1.5 kg
Interface RS485, 2 - wire, half - duplex
Power supply 11…32 VDC
Power supply 5…11 VDC (electronics with limited precision of measurements)
Power supply 24 VDC +/- 10% (heater)
Power consumption 40 VA (heater)
Operating temperature -50...60 °C (with heater)
Operating rel. humidity 0...100 % RH
Cable length 10 m
Protection level housing IP66
Mast mounting suitable for Mast diameter 60 - 76 mm

Temperature

Principle NTC
Measuring range -40 ... 80 °C
Unit °C
Accuracy ±0.2 °C (-20...50 °C), otherwise ±0.5 °C (>-30 °C)

Relative humidity

Principle Capacitive
Measuring range 0 ... 100 % RH
Unit % RH
Accuracy ±2 % RH

Air pressure

Principle MEMS capacitive
Measuring range 300 ... 1200 hPa
Unit hPa
Accuracy ±0.5 hPa (0...40 °C)

Radiation

Response time < 5 s
Zero offset A < 7 W/m²
Zero offset B < 2 W/m²
Directional error (at 1000 W/m²) < 0.2 %
Temperature dependence of sensitivity < 1 % (-10 ºC...40 ºC)
Spectral range 285 to 2,800 nm
Measuring range 4000 W/m²