Radiation Protection

Looking back over 150 years of recording climate data, we need to face up to the fact that the recorded climate data is far too inaccurate in order to be able to prove the existence of global warming. Besides the applied sensor technology and choice of location, insufficient radiation protection of the temperature sensors has also had a very significant impact on the accuracy of the temperature recording of near-ground measuring stations. We can assume that in Germany and worldwide, the same reasons are continuing to cause inaccurate temperature measurements today.

With the development of a new radiation protection enclosure (SE), we are providing climatologists with a system that will allow them to prove the existence of global warming on our planet. With its new radiation protection enclosure (SE), Anemometerbau GmbH, which has been developing innovative meteorological products since 1875, presents its latest creative development which gives us the possibility of eliminating the impact of radiation on temperature sensors in ground-based measuring stations.

The radiation protection enclosure consists of multiple profiles which overlap, while at the same time being completely separated from each other, allowing the air to flow between them into the measuring chamber. A canalisation system with a radiation protection chamber and a screen prevents radiation from penetrating the measuring chamber and the gas flow from coming into contact with the radiation protection elements.

Thermally, the canalisation system is horizontally and vertically separated from the radiation protection elements. The radiation protection system is so positioned that the radiation is blocked on three sides (from the above, the sides and from below), and as a result cannot influence the sensors inside the measuring chamber. Both outer profiles are equipped with passive heat sinks on the rear making use of the chimney effect. The measuring chamber itself is actively cooled by way of a forced secondary circulation. The speed with which the gas flows is controlled via the fan drive by a control system with flow sensor inside the measuring chamber.

The measuring data of the highly precise temperature sensor are recorded by a single-line data logger, compared with the temperature curve, stored internally and finally transferred to a centralised data logger. In this way, it is possible to prove the existence of global warming using a near-ground climate measuring station without radiation affecting the accuracy of the data.

For the usage in subtropical, tropical and desert zones as well as in high mountains and for the usage on the polar ice caps the radiation protection enclosure has to be modified.


Radiation protection shelter with plastic lamella

The shelter is made of various single lamellas made of special synthetic materials dyed in white.

We also offer a model with electric ventilation to receive exact measurements even when no wind is blowing.
Ventilation velocity is 3 m/s.

Additionally, all models can be delivered with transmitter located inside the housing underneath the sensor. Exits with 0...20mA or 4...20mA are available.

Transmitter, operating temperature: -40...+60 °C    
Transmitter, entry: Pt 100, measurement range -35...+45 °C Transmitter, exit: 4...20 mA; Vers. 18...30 V DC;
bürdenabhängig (500 Ω...1,9 kΩ lin.)
Limit of error: 0,25% Dimensions: Ø ca. 120 mm, H = 240 mm
Operating temperature: -40...+60°C Weight: max. 1,4 kg
Errors caused by power supply: < 50 ppm/V Errors caused by ambient temperature: < 50 ppm/°C
Ventilator: 12 V DC, ca. 70 mA EMV emission: EN 50081-1
Flow velocity: 3 m/s Connection: 8-pol. connector, IP 67