The Leipzig Institute for Meteorology is equipped with a wind tunnel, a climate chamber and a laboratory for calibrating optical measuring devices. The laboratories are used to prepare scientific measurements in field campaigns and are used for teaching in practical courses.
Wind tunnel
The wind tunnel is installed separately in an adjoining laboratory room. It is a closed Göttinger-type channel with a Flow-Calculation System.
Manufacturer
Westenberg Wind Tunnels
Technical data
- Simulating of wind speeds of up to 25 m/s,
- Degree of turbulence is 0.8 % at approx. 20 m/s.
Application
- The wind tunnel is certified and thus offers the possibility to test and characterize anemometers of different designs and to calibrate them for outdoor use.
- The wind tunnel is also a central component in several student practical courses of the Bachelor and Master program where it is used to carry out calibrations and experiments.
Climate chamber
The climate chamber is accessible and offers sufficient space for the installation of measuring devices in the 2 m x 2 m interior with a ceiling height of 2 m.
Manufacturer
RUF Gebäudetechnik GmbH
Technical data:
- Regualation of temperture with a temporal accuracy of around 0,5 K,
- Regualtion relative humidity with an accuracy of 5 %,
- Temperature range: from -40 °C to 80 °C,
- Cooling or heating by 50 K: about 2 hours,
- Controlling of air humidity in the climatic working range between 10 °C and 80 °C: between 15 % and 95 %,
- The temperature and humidity curves can be programmed over several points and thus automated.
Application
- Preparation of scientific measurements for field campaigns.
Radiation laboratory
The radiation laboratory at the institute is used to set up, test and calibrate optical measuring devices.
Various solar radiation sources are available for this purpose:
- certified halogen lamps, diffuse radiation sources, so-called integrating spheres,
- and isotropically scattering reflection panels.
Application
- The radiation sources are certified and are used for radiometric calibration of the measuring devices. The windows are darkened and an additional darkroom is available for this purpose.
- An optical table with corresponding mounting brackets, such as a rotation table, is used to characterize the optical sensors.
- Thermal infrared measuring devices are also operated in the laboratory. These are calibrated with a black body, which can display surface temperatures between-40 °C and +150 °C.