WS800-UMB Smart Weather Sensor
| Model: WS800 UMB | Make: Lufft |
Key Highlights
- * Wind detection with birdproof construction. First and only compact all-in-one weather sensor with lightning detection, low power, heater, aspirated radiation shield, maintenance-free operation, open communication protocol.
* Measurand: Temperature, Relative humidity, Air pressure, Wind direction, Wind speed, Precipitation intensity, Precipitation quantity, Solar radiation, Lightning strikes
* Sensor Type: Compact Weather sensor
* Signal Output: RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR and SDI-12
* Supplied With: 10 Meter standerd cable, Factory test/ Calibration certificate
* Article number: 8381.U01, 8381.U01-NA
Category: Compact Weather Sensor
From the WS product family of professional intelligent measurement transducers with digital interfaces for environmental applications. integrated design with ventilated radiation protection for measuring: air temperature, relative humidity, precipitation intensity, precipitation type, precipitation quantity, solar radiation, lightning detection, air pressure, wind direction, and wind speed. One external temperature sensor is connectable.
Air Temperature and Humidity: Temperature is measured by way of a highly accurate NTC resistor, while humidity is measured using a capacitive humidity sensor. In order to keep the effects of external influences (e.g., solar radiation) as low as possible, these sensors are located in a ventilated housing with radiation protection. In contrast to conventional, non-ventilated sensors, this allows significantly more accurate measurement during high radiation conditions. Air temperature values with reduced accuracy are available as service channels for additional information. Additional variables such as dewpoint, absolute humidity, and mixing ratio are calculated from air temperature and relative humidity, taking air pressure into account.
Air Pressure: Absolute air pressure is measured by way of a built-in sensor (MEMS). The relative air pressure referenced to sea level is calculated using the barometric formula with the aid of the local altitude, which is user-configurable on the equipment.
Precipitation: Tried and tested radar technology from the R2S-UMB sensor is used to measure precipitation. The precipitation sensor works with a 24 GHz Doppler radar, which measures the drop speed and calculates precipitation quantity and type by correlating drop size and speed. The WS601-UMB is using an unheated rain gauge for precipitation measurement. This version can be recommended for low-power applications, etc.
Wind: The wind meter uses four ultrasonic sensors that take cyclical measurements in all directions. The resulting wind speed and direction are calculated from the measured run-time sound differential. The sensor delivers a quality output signal indicating how many good readings were taken during the measurement interval.
Global Radiation: The global radiation is measured by a pyranometer mounted on the top cover of the Smart Weather Sensor.