The functions has remained the same, but designed have updated over the years and can vary widely. We offer both naturally and actively ventilated versions

Primary Functions

• Radiation Shielding: To completely block direct, reflected, and ground-level solar and thermal radiation. This ensures that thermometers record the true ambient air temperature (in the shade) rather than the physical heat absorption of the sensor or glass tube.
• Precipitation and Wind Protection: To shield sensitive sensors from direct rain, snow, and severe wind gusts, which would otherwise induce artificial cooling or structural damage.
• Natural Passive Ventilation: To use angled, louvered sides and a double-layered roof to maintain a constant, uninhibited airflow across the internal sensors. This design prevents internal air stagnation and keeps the internal microclimate identical to the real-time state of the surrounding atmosphere.
• Active Ventilation: Using two protective shells, which are mounted one over the other and a powered fan to move the air between these shells, ensuring air is constantly exchanged, and hence the temperature inside the measuring tube is equal to the prevailing conditions.