“Despite the fact that the Barani shelters are not artificially ventilated, their performance is better than our artificially ventilated compact shelter. ”
FARS and the naturally ventilated MeteoShield Pro gen3 were tested in the USA against a reference at the Oklahoma MESONET in the Comparison and Impacts of Air Temperature Measurements from Aspirated and Unaspirated Radiation Shields and by the Royal Belgian Meteorological Office (RMI) in the Intercomparison of Shelters in the RMI AWS Network to verify the patented & registered helical design. Even at low sun elevation angles, the precision for professional atmospheric air temperature measurement was verified.
MeteoShield® Professional (gen3)
Solve all of your air temperature & humidity measurement errors.
Double-helix solar radiation shield offers superior temperature accuracy and protection as confirmed by independent testing.
FARS MeteoShield® Professional (gen3)
Solve all of your air temperature & humidity measurement errors, even when in no wind conditions, and maintain accuracy and precision even without the fan running, regardless of the weather.
This FARS Double-helix solar radiation shield offers superior temperature accuracy and protection as confirmed by independent testing.
While all fan aspirated shields change the air circulation around them, we minimized this effect.
Where the air that touches the temperature sensor comes from in the BARANI FARS shield at 0.3 m/s, almosts stagnant wind conditions.
Technical drawing showing dimensions and removable fan assembly for easy service of the FARS MeteoShield Pro (gen3).
See how the FARS MeteoShield Pro stacks up in the Comparison and Impacts of Air Temperature Measurements from Aspirated and Unaspirated Radiation Shields while minimizing changes of measurement height, which is the largest source of measurement error in all fan aspirated shields (FARS) to date, since the downwash from their fans mixes different temperature layers of air.
Even with the fan aspiration turned off, this FARS shield will behave as accurately as the naturally ventilated MeteoShield Pro gen3, giving you peace of mind that your measurements with and without the fan running will always be accurate and consistent regardless of the weather conditions.
WHY IS HELICAL BECOMING THE STANDARD OF ACCURACY
More accurate than the best multi-plate shields & many fan-ventilated shields
So far, in every independent comparison, the helical MeteoShield Professional has shown superior accuracy in comparison to any other solar radiation shield. It is also more accurate than naturally ventilated Stevenson screens.
Keeps your sensors clean for long-term accuracy is improvement
Weather station testing showed the helical shield keeps sensors cleaner than multi-plate shields.Master your climate measurements with most stable & accurate platform for air-temperature.
MeteoShield® Pro significantly surpasses accuracy of fan-ventilated screens
Independent testing published at the CIMO-TECO-METEOREX - WMO conference as part of the Meteorological Technology World Expo 2018 confirm the superiority of the MeteoShield Pro for all types of meteorological measurements and in all weather conditions.
MeteoShield Pro’s 95% confidence interval is far superior to any other solar radiation shield or screen including Stevenson and fan-aspirated radiation shields and shelters. The benefit is even more pronounced in rainy conditions.
Stability for climate research. Accuracy is not affected by shield contamination
Helical MeteoShield Professional is the most stable platform to measure air-temperature accurately for climate research and urban climate monitoring.
The black painted MeteoShield showed very stable measurements. In conditions of zero wind (<0.6 m/s avg.), less than 0.35 °C increase in air temperature was seen due to the black paint. Wind speeds above 1 m/s showed no noticeable difference in accuracy.
SOLUTIONS TO MOST COMMON TEMPERATURE MEASUREMENT PROBLEMS
Dirty sensors causing measurement errors
Sensor protection - testing showed cleaner sensors inside MeteoShield after long exposure to dusty and dirty environment than other professional shields. 360° line-of-sight protection and internal spiral vortex flow forces dirt to the outside, away from the central sensor. Learn more >
Maintenance free - testing showed virtually no negative effect on measurement accuracy of heavy soiling and dirt on the shield. Learn more >
Temperature extremes causing high readings on sunny windless days
Low-wind accuracy - helical design almost eliminates effects of solar heat in low wind conditions and is more accurate than most fan-ventilated shields on sunny winter days.
No more hot air bubble - strong helical airflow to the sensor prevents formation of a hot air bubble on hot summer days and 360° sensor protection keeps at bay influences of reflected radiation and heat from nearby snow, sand, water or pavement. Learn more >
Unrealistically high humidity and low temperature after rain
Water shedding after rain - ever sloping surfaces of the helix minimize water buildup and maximize water shedding during rain. After rain has stopped, only a slight breeze is necessary to remove most water droplets from the shield. The strong internal vortex flow feeds plenty of air to the central sensor to return humidity & temperature measurement to accuracy within minutes, unlike in traditional multi-plate shields. Learn more >
High-cost of fan-aspirated shield accuracy
3-in-1, accuracy, stability and reliability - with its superior accuracy and temperature stability, the MeteoShield also offers ultimate reliability in all-weather conditions. Competitor shields in its accuracy class are only fan-aspirated with limited reliability due to moving parts and requiring regular maintenance. Learn more >