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WSC11-Compact Weather Sensor

Make:  Thies Clima                             Model: WSC11
✅ The compact weather station WSC11 is designed for use in building services automation systems.
✅ Measurand : Wind speed, Wind direction, Brightness, Twilight, Global irradiance, Precipitation, Air temperature, air pressure, Time / date, Geostationary data, Position of the sun, Relative humidity, Dew-point temperature, Inside temperature of housing.
✅ Sensor Type : Thermal anemometer, Silicon sensor, Ceramics, capacitive value measurement, sensor area heated, PT1000, Piezoresistive, CMOS capacitive,RS485.
✅ Signal Output : RS485 interface in half-duplex mode. Two data protocols are ASCII (THIES- format) and binary (MODBUS RTU).
✅ Supplied With: Mounting angle (509564 ), 5 meter Cable for WSC11 (510023),  10 m Cable for WSC11 (510024), Factory trest/Calibration certificate

The interface for the instrument is digital and consists of an RS485 interface. Together with the ID-based communication the interface facilitates the operation of the weather station in a bus.
The instrument has a GPS receiver. It serves for the determination of position and time. The sun position is calculated here from additionally.
The following parameters can be measured: Wind speed, Wind direction, Brightness (in North, East, South, West), Twilight, Global radiation, Precipitation, Temperature, Relative air humidity, Air pressure, Time/date, Geostationary data, Longitude, Latitude, Sun position, Elevation, Azimuth.

Wind Speed / Wind Direction: Wind measurement is based on the hot wire principle. The underside of the housing is equipped with a heated cylindrical sensor. A PID controller adjusts the temperature of the cylinder to a temperature that is constantly increased in relation to the environment. The supplied heat energy is a measure of wind speed.

Brightness: The brightness measurement is carried out via 4 Silicium photo sensors, which are aligned to the 4 cardinal directions in the mean elevation angle.

Twilight: Twilight means the light diffusion in the atmosphere, which arises with the smooth transition between day and night before the beginning or after the end of day. i.e., the solar disc is not visible. The twilight is direction-independent. It is calculated from the sum of the 4 measuring values of the direction-independent brightness sensors. A change to the mean value from the 4 brightness values is possible by command.

Global irradiance: A silicon PIN photodiode is used to measure global irradiance. The sensor is positioned horizontally and registers the diurnal values of the solar irradiation intensity.

Precipitation: The detection of precipitation is based on capacitance measurement, i.e. the capacity of the sensor surface varies when wet. The sensor is installed in the housing cover. An integrated heating system adjusts the sensor area to an overtemperature in relation to the ambient temperature. This overtemperature (approx. 2K) prevents bedewing of the sensor surface. The thermal output is increased with precipitation. This accelerates drying of the sensor, allowing the time at which precipitation ended to be identified more accurately.

Air temperature: A PT1000 measuring resistor is used to measure the air temperature. The sensor is mounted on a flexible printed board and positioned in the lower section of the housing.

Air pressure: Absolute air pressure is measured with a piezoresistive MEMS sensor.

Time / date and geostationary data: The Weather Station has a GPS receiver with a built-in RTC. This allows it to receive the position of the Weather Station (degree of longitude/latitude, local altitude) time (UTC) and date. The GPS receiver does not needs alignment. The built-in RTC (Real Time Clock) is buffered with a backup capacitor and retains its data without a voltage supply for a period of minimum 3 days.

Position of the sun (elevation / azimuth):  On the basis of the GPS data the current sun position is calculated every second.

Humidity measurement: A built-in hygro-thermosensor is used to measure humidity levels. The sensor has a small air exchange volume thanks to its compact design and responds to changes in humidity in seconds.
A software module uses the relative humidity and air temperature to calculate absolute humidity and the dew-point temperature.
Inside temperature of housing A silicon temperature sensor measures the temperature inside the housing.

GPS-Receiver: The weather station has a GPS receiver with integrated RTC (Real Time Clock) for receiving the position of the weather station, and time + date (UTC). An alignment of the GPS receiver is not necessary. The integrated RTC is buffered for a period of 3 days.



✅ Building control system
✅ Traffic engineering
✅ Meteorology
✅ Energy supply
✅ Ecological monitoring
✅ Compact construction
✅ Easy mounting
✅ Diverse options of data output.
✅ Real Time Data monitoring
✅ Data Accuracy

Thies Clima




Ø 130 x 70 mm

Weight (Mass)

0.2 kg

Power Supply

18 … 30VDC, 18 … 28VAC

Power Consumption

120mA @ 24 V (max. 1,5A AC, max 0,5A DC).

Operating Environment

-30 … +60°C

Protection Level


Mast Diameter

on mast tube Ø 25mm

Cable Length

10 m

Air Temperature

Type : PT1000.
Measuring range : -30 … +60°C.
Resolution : 0.1°C .
Accuracy with wind speed >2m/s : ±1°C (-5 … +25°C)

Wind Speed

Type : Thermal anemometer.
Measuring range : 0 … 40m/s .
Resolution : 0.1m/s.
Accuracy : To 10m/s: ±1m/s (rms – mean over 360°). From 10m/s: ±5% (rms – mean over 360°).

Wind Direction

Type : Thermal anemometer.
Measuring range : 1 … 360°
Resolution : 1° .
Accuracy with laminar incident flow : ±10°

Relative Humidity

Type : CMOS capacitive.
Measuring range : 0 … 100% .
Resolution : 0.1% .
Accuracy with wind speed >2m/s : ±10% rel. humidity at : 20°C

Air Pressure

Type : Piezoresistive.
Measuring range : 300 … 1100hPa .
Resolution : 0.01hPa .
Accuracy : ±0.5hPa at 20°C .
Long-term stability : ±0.1hPa / year


Type : Ceramics, capacitive value measurement, sensor area heated. Measuring range : 1 / 0 (precipitation yes/no) .
Thermal output, sensor dry, bedewing protection : 0.1W
Thermal output, sensor wet drying phase : 1.1W

Global Radiation

Type : Silicon sensor.
Measuring range : 0 … 1300W/m2 .
Resolution : 1W/m2 .
Accuracy : ±10% (± 130W/m²) .
Spectral range : 350 … 1100nm


Type : Silicon sensor.
Measuring range : 0 … 150kLux .
Resolution : 0.1kLux .
Accuracy : ±3% (± 4.5kLux) .
Spectral range : 475 … 650nm


Type : Silicon sensor,
Measuring range : 0 … 999Lux ,
Resolution : 1Lux ,
Accuracy : ±10Lux

  • What is weather monitoring station?

    Weather monitor station:  Weather monitoring station is a facility with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate. It is available with Solar Panel and Mounting Accessories.

  • What is weather monitor system?

    Weather monitor system: Collecting weather data like Wind Speed, Wind Direction, Precipitation, Air temperature, Relative humidity, Brightness, Twilight, Solar radiation, Barometric pressure, with the help of  data logger.

    A weather monitoring system consists following component.

    • Weather sensors (Wind Speed, Wind Direction, Precipitation, Air temperature, Relative humidity, Brightness, Twilight, Solar radiation, Barometric pressure)
    • Solar Panel
    • Data logger
    • Telemetry system
    • Data monitoring software.
  • What is weather monitor?

    Weather monitors: The periodic or continuous surveillance or analysis of the state of the atmosphere and climate, including variables such as temperature, moisture, wind velocity and barometric pressure is called weather monitoring.

  • What is weather detector?

    Weather detector: Weather detectors are also called weather sensor as per their name they detect changes in weather parameters.

  • What is weather sensor?

    Weather sensor: Weather sensors are sensor used to detect meteorological parameters data such as- Wind Speed, Wind Direction, Precipitation, Air temperature, Relative humidity, Brightness, Twilight, Solar radiation, Barometric pressure.

  • What is cast of Automatic weather station.

    Automatic weather station cost: AWS cost varies according to number of parameters and features, you can contact us to get best quote.

  • What are Automatic weather station components?

    Automatic weather station components: Typical AWS have the following components:

    • Anemometer for measuring Wind Speed.
    • Wind Vane for measuring Wind direction.
    • Pyranometer for measuring solar radiation.
    • Barometer for measuring atmospheric pressure.
    • Hygrometer for measuring humidity.
    • Rain gauge for measuring liquid precipitation.
    • Evaporation Sensor for measuring evaporation.
  • What is Automatic weather station?

    Automatic weather station (AWS) is automated version of conventional weather sensor. Which helps in monitoring all type of weather parameter like Wind Speed, Wind Direction, Precipitation, Air temperature, Relative humidity, Brightness, Twilight, Solar radiation, Barometric pressure.