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Wittich Meteo - Model M&R DD & DS Series -Wind Sensors
The DD windvane and DS cup anemometer from Wittich & Visser are light weight instruments for measuring wind speed and wind direction contact free. The sensors use a well accepted measuring principle and profit from digital techniques: a perfect combination of traditional and modern concepts. Both sensors are ideal for agro-meteorology, greenhouse automation, HVAC, safety guard regulations, etc.
DD windvane
With this light weight, long life wind vane the wind direction is measured over the full 360° with a resolution of 0.3° without dead angle! The angle is measured contact free using the Hall effect. Using RS232 or RS485 communication the analogue (mA or Volt) outputs are configurable.
DS cup anemometer
With this three cup anemometer wind speed can be measured up to 30 m/s and higher. The speed is processed contact free using the Hall effect. The treshold speed is 0,5 m/s. Using RS232 or RS485 communication the analogue (mA or V) outputs can be programmed. The analogue signals can be scaled to cover any measuring range between 0 and 60 m/s.
Specifications DD
- Measuring principle Hall effect
- Life expectation 0,5 m/s
- Electrical angle 360°
- Mechanical angle 360° without stop
- Damping ratio 0,35
- Treshold 1,2..1,5 m/s
- Linearity 1%
- Operating temperature -30..+80°C
- Temperature coefficient ± 200 ppm/°C
Specifications DS
- Measuring principle Hall effect
- Air velocity range 0..60 m/s
- Treshold 0,5 m/s
- Operating temperature -30..+70°C
- Distance constant 2,2 m