Ventilation of radiometers improves the reliability and accuracy of the measurement by reducing dust, raindrops and dew on the dome. With thermopile-based instruments ventilation stabilises the temperature of the radiometer and suppresses thermal offsets. The integrated heater can be used to disperse precipitation and melt frost.
CVF 3 is a low maintenance ventilation unit. The only part that needs maintenance is the removable air inlet filter, which should be checked at regular intervals and cleaned or replaced when necessary.
When required, two levels of integrated heating can be switched on.
5 Watt heating, under normal conditions, to raise the temperature of the dome slightly above ambient to prevent the formation of dew and frost
10 Watt heating, for more extreme climates, melts snow and ice
CVF 3 replaces the successful and widely used CV 2 ventilation unit. The CVF 3 has a 5 V pulse output to monitor the fan performance and a waterproof connector for easy installation.
CVF 3 can be mounted on the 2AP and SOLYS 2 sun trackers and the CM 121C shadow ring.
