- Home
- Companies
- OTT HydroMet Solar Energy
- Products
- Lufft - Model WS400 - Smart Weather ...
Lufft - Model WS400 -Smart Weather Sensor
The WS400-UMB is a compact all-in-one weather sensor with measurement of temperature, relative humidity, air pressure, precipitation intensity, type and quantity. It is part of the WS product family of professional intelligent measuring sensors with a digital interface and an integrated design with ventilated radiation protection for various environmental applications. An external temperature sensor can be connected.
All-in-one housing concept & easy installation
All-in-one housing concept of a compact weather sensor combining several measurement parameters in one housing with only a single cable connection.
Maintenance-free operation
Maintenance free operation as there are no moving parts that can wear out. Precipitation is measured with a radar sensor.
Flexible interfaces and telegrams
SDI-12 and RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, and XDR.
Technical Attributes
- *Parameters Measured:
- Air Temperature
- Relative Humidity
- Precipitation Intensity
- Precipitation Type
- Precipitation Quantity
- Air Pressure
- Air Pressure:
- Accuracy: ±0.5 hPa (0 - +104 °F) or ±0.5 hPa (0 - +40 °C)
- Measuring range: 300 - 1200 hPa
- Measurement technology: MEMS capacitive
- Air Temperature:
- Accuracy: ±0.4 °F (-4 - +122 °F) or ±0.2 °C (-20 - +50 °C), otherwise ±0.9 °F (˃ -22 °F) or ±0.5 °C (˃ -30 °C)
- Measuring range: -58 - +140 °F (-50 - +60 °C)
- Measurement technology: NTC
- Resolution: 0.1 °C (-20 - +50 °C), otherwise 0.2 °C
- Analog Inputs: 1
- Cable Connection: Open wires
- Cable Length: 33 ft (10 m)
- Communication:
- SDI-12 and RS485 with supported protocols
- UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR
- Dimensions: Ø150 x 279 mm
- Interface:
- RS485 2 wire
- Baud rate: 1200 - 38400 bit/s (Standard: 19200) or SDI-12
- IP Rating: IP66
- Material Enclosures: Plastics (PC)
- Operating Humidity: 0 - 100 %
- Operating Temperature Range: -50 - +60 °C
- Power Supply: 12 - 24 VDC
- Precipitation:
- Accuracy: 20 %
- Measuring range: 0 - 200 mm/h
- Measurement technology: 24 GHz Radar
- Relative Humidity:
- Accuracy: ±2 % RH
- Measuring range: 0 - 100 % RH
- Measurement technology: Capacitive
- Weight: 3.3 lb (˂ 1.5 kg)
- Wind Direction:
- Accuracy: ˂ 3° RMSE ˃ 1.0 m/s
- Measuring range: 0 - 359.9 °
- Measurement technology: Ultrasonic
- Wind Speed:
- Accuracy: ±0.3 m/s or ±3 % (0 - 35 m/s) ±5 % (˃35 m/s) RMS
- Measuring range: 0 - 75 m/s
- Measurement technology: Ultrasonic