OTT HydroMet - Model LUFFT WS501-UMB - Smart Weather Sensor
Compact all-in-one weather sensor with measurement of temperature, relative humidity, air pressure, wind direction, wind speed and radiation. From the WS product family of professional intelligent measurement transducers with digital interface for environmental applications. Integrated design with ventilated radiation protection for measuring: Air temperature, relative humidity, air pressure, wind direction, wind speed and radiation. One external temperature or rain sensor is connectable.
Product Details
- Parameters measured: Temperature, relative humidity, air pressure, wind direction, wind speed, radiation
- Measurement technology: Ultrasonic/Wind, NTC/T, Capacitive/RH, MEMS capacitive/Pressure, Kipp&Zonen Pyranometer/Radiation
- Product highlights: Compact all-in-one weather sensor, low power, heater, aspirated radiation shield, maintenance-free operation, open communication protocol
- Interfaces: RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR and optional SDI-12
Advantages
- All-in-one housing concept of a compact weather sensor combining 6 measurement parameters in one housing with only one cable connection
- Integrated Kipp & Zonen CMP3 Pyranometer
- Built-in data pre-processing, universal interfaces and selectable output protocols
- Compatible with many commercially available Met/HydroMet dataloggers and PLS systems thanks to an open communication protocol
- Maintenance-free operation – no moving parts that can wear out
- 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
Examples of Use
The robust and maintenance-free smart weather sensor WS501 is designed for professional meteorological applications in all climate zones. It delivers reliable data, even in extreme ambient conditions.
Examples of use:
- Weather observation for road and traffic control systems
- Automatic weather station / Automatic weather sensor (AWS)
- PV-Monitoring / Solar Monitoring on photovoltaic farms
- Hydro-meteorological stations
- Weather observation for building automation
- Weather stations at airports, marinas and onboard ships
- Integration into various other systems/solutions, where environmental data is needed...
Technical Data
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: 20 VA (heater)
- Operating temperature: -50...60 °C (with heater)
- Operating rel. humidity: 0...100 % RH
- Cable length: 10 m
- Protection level housing: IP66
- Standards/Regulations: Compliant to IEC 61724-1:2017 Class C
- Mast mounting suitable for: Mast diameter 60 - 76 mm
Temperature:
- Principle: NTC
- Measuring range: -50 ... 60 °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)
Wind direction:
- Principle: Ultrasonic
- Measuring range: 0 ... 359.9 °
- Unit: °
- Accuracy: < 3° RMSE > 1.0 m/s
- Resolution: 0.1
Wind speed:
- Principle: Ultrasonic
- Measuring range: 0 ... 75 m/s
- Unit: m/s
- Accuracy: ±0.3 m/s or ±3 % (0 ... 35 m/s) ±5 % (>35 m/s) RMS
- Resolution: 0.1 m/s
Radiation:
- Response time (95%): < 18 s
- Non-stability (change/year): < 1 %
- Non-linearity (0 to 1,000W/m²): < 1 %
- Directional error (at 80° with 1,000W/m²): < 20 W/m²
- Temperature dependence of sensitivity: < 5 % (10... +40 °C)
- Tilt error (at 1000W/m²): < 1 %
- Spectral range: 300...2800 nm
- Measuring range: 2000 W/m²
Compass:
- Measurement range: 0 ... 359°
- Resolution: 1.0°
- Accuracy: +/-10°
- Sampling rate: 5 minutes
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