BARANI DESIGN Technologies opening doors to private equity investment

MeteoHelix® weather station in a meteo garden of professional meteorological instruments

BARANI DESIGN Technologies, the holder of helical technology for compact weather stations will be opening its doors to private equity investments. Patented helical design offers strong product differentiation and enables BARANI DESIGN to be the leader in professional precision climatic measurement. 

“It is becoming very challenging to keep up with the rising demand for our products” from the words of CTO, Jan Barani. “The one-of-a-kind helical technology has been proven in professional applications including Antarctica, and offers a stepping stone from professional technology into the home weather station market, which requires a strong marketing investment.”

While the professional meteorological industry is undergoing transformation and consolidation, there is strong opportunity for growth in emerging markets where the Internet of Things revolution is making wireless technologies affordable. “Our MeteoHelix® IoT Pro weather stations are attracting a lot of attention since they leverage professional measurement technology and affordable wireless technologies to bring never before seen combination of measurement qualities and ease of use to the sub $ 600 weather station market.”

“We have become investment limited in growth and are opening up talks to find the right partner/s and investors."  BARANI DESIGN Technologies is well positioned to take a big chunk of the professional meteorological instrument market and also a big chunk of the middle market as dominated by Davis weather stations. 

More info on helical technology: 
https://www.meteorologicaltechnologyworldexpo.com/en/industry-news.php?release=a03fa30821986dff10fc66647c84c9c3

Helical micro weather station based on the proven MeteoShield® Professional:
MeteoHelix® IoT Pro (LoRaWAN, Sigfox, NB-IoT)

Company info:

BARANI DESIGN Technologies s.r.o.
Klincová 35
821 08 Bratislava, SLOVAKIA
www.baranidesign.com

Business ID: 51041472
Tax ID: 2120570738
VAT ID: SK2120570738

MeteoHelix® Pro – the micro-weather station at Sigfox Connect

MeteoHelix® IoT Pro - the professional micro-weather station

Can the MeteoHelix® bring on a new revolution in professional meteorology? When many meteorological departments are cutting costs, it has become harder and harder to justify expansion of meteorological networks, especially for countries stuck in recession such as in Africa and South America. What if what was once before thought impossible now became possible?

A professional weather station meeting the stringiest World Meteorological Organization (WMO) accuracy requirements for sub 500 Euro? New technologies like the award winning helical MeteoShield® Professional and the advent of low-power wireless technologies enabled BARANI DESIGN Technologies to shrink a professional weather station and to make it so simple to install and use that even your grandma can use it.

“Precise enough for the professional, easy to use for everyone.”

This compact professional weather station enables just about anyone to have professional grade meteorological data in their backyard. While its affordability makes high-density meteorological networks not only possible but also financially viable.

The MeteoHelix® IoT Pro – Sigfox version will be presented and displayed along with its allMeteo® cloud platform at Sigfox Connect 2018 in Berlin Germany.

Will the BARANI MeteoShield® replace the Stevenson screen as the new reference for climate change measurements?

While temperature sensors are getting more and more accurate, uncertainty of air temperature measurement has remained mostly unchanged over the past decades. Where once iconic Stevenson screen shelters dominated the professional meteorological landscape, they are now becoming rarer and slowly replaced by smaller cheaper multi-plate radiation shields and fan-ventilated shelters. Are they still the benchmark of precision air temperature measurement or are upcoming technologies like the helical radiation shield from BARANI DESIGN Technologies ready to send them the way of the dinosaurs?

Measuring true air temperature is complicated. AWOS weather stations measure "near surface atmospheric air temperature" at a height of two meters according to World Meteorological Organization (WMO) standards. They usually use sensors calibrated in a liquid bath in adiabatic conditions, while real measurement inside radiation shields and Stevenson screens takes place in anything but adiabatic conditions. In layman's terms, sensor temperature in the real world is never in balance with air temperature, thus measurement error (uncertainty) due to varying sensor construction, sensor reaction time (time constant) and self-heating along with radiative heating and cooling is unaccounted for.

True air temperature

What is "true near surface atmospheric air temperature" is somewhat of a mystery. Before comparing various air temperature sensor systems, one must first understand what one is trying to measure... to understand what true air temperature is.

Like any substance, air is prone to heating and cooling through well know energy flows like solar radiation, infrared radiation, convection, conduction and emissivity. Other sensor related influences include dew condensation, evaporative cooling or phase transitions, direct, diffuse and reflected solar radiation, self-heating and of course, the above mentioned calibration procedures.

What affects real air temperature

First, lets take a look at heating from radiative sources such as the sun and infrared heat radiating from the surroundings, which seem to dominate air temperature error and uncertainty. Even though air is mostly transparent, it is well documented that each of its composing gases has a certain light sensitivity or absorbance spectrum and also emissivity (radiative cooling). This radiative heating of air accounts for the difference between incoming solar radiation from earth's sun and radiation reaching ground level as shown in yellow in the accompanying plot. A familiar example is the absorbance of UV light in the upper atmosphere by ozone molecules. 

Just like every other substance, air also has the ability to cool itself by radiating heat away in the form of infra-red radiation. This property known as emissivity is different for every material and color and contributes to the error which effects our measurement quality inside every solar screen and solar radiation shield used to house meteorological air temperature sensors.

The energy balance of our measurement systems effects the temperature our sensors read. In the professional community, it is widely believed that a larger solar screen is more accurate. Why some may think this, we will attempt to explain later, but first lets flip the cards around and look at air temperature from the perspective of an air molecule flowing in the wind two meters above ground according to WMO standards. (For this illustration, it is not important whether it is N₂, O₂, Ar, CO₂, H₂O, O3, NO, NO₂ or any other molecule or dust particle composing air.)

Temperature from the viewpoint of air

On a partly sunny spring day with remnants of intermittent snow cover over grassy fields an air molecule called Caeli moved through the shade of a cloud, where it reached an equilibrium temperature of 15 °C. In the shade, the atmosphere was in balance and Caeli was emitting exactly the same amount of heat through emissivity as was receiving from the surroundings like the ground, vegetation and from diffuse solar radiation while the sun's direct solar radiation remained hidden behind a cloud. 

Crossing the threshold of shade into the sun, direct solar radiation bombards Caeli with five times the energy of diffuse radiation. The ground below is of no help since it too is heated by the sun and radiating more heat toward Caeli's bottom than the ground in the shade of a cloud. While exact calculation of Caeli's warmup is beyond this article, her temperature rise is almost immediate and Caeli and her molecular friends find themselves dancing at 3 °C higher temperature than in the shade. 

Stevenson vs. BARANI

As Caeli's journey continues, she suddenly hits a white gauntlet. Smacking directly into a Stevenson screen shelter, Caeli flips upside down and slides through its slots into a chamber hidden from the sun and filled with thermometers. She quickly shakes off the extra heat accumulated in the sun and peacefully slides past a temperature probe. It remains a mystery what her exact temperature was and if she had enough time to find her new temperature balance before squeezing through the back-side louvers and out into the free air in the sun where she quickly regained her warmth. Was Caeli’s temperature drop measurement error caused by the Stevenson screen?

A few meters later her head starts spinning again as she finds herself skimming past a temperate probe. This time she entered a helical solar shield and before she even noticed being in the shade, she rubbed elbows with the temperature probe. The shield's smaller size and easy air access to the sensor gave Caeli almost no time to shake off accumulated heat from the direct sun as compared with the Stevenson screen. 

The future of air temperature measurement

• What did the sensors inside the Stevenson screen and BARANI’s helical MeteoShield® Professional measure?

• How was the measured air temperature affected by each shelter?

• Which measured temperature is closer to the real atmospheric air temperature?

These are the questions aimed to be answered by the Consultative Committee on Thermometry of BIPM in their 2023 - 2027 roadmap and by a new project being launched this year by EURAMET. The first goal, however, will be to identify all of the components of uncertainty by the International Surface Temperature Initiative or ISTI which will start preparing a joint paper with members of CCT on this topic.  

WMO radiation shield comparisons

A more detailed comparison of BARANI DESIGN MeteoShield® Professional and the Stevenson screen shelter can be found in a WMO radiation shield comparison study by the Royal Meteorological Institute of Belgium (RMI). “Intercomparison of Shelters in the RMI AWS Network”

A notable study was also performed by METEOMET where multiple radiation shields were compared in a winter alpine setting for the effects of snow and sun reflections. “An experimental method for the evaluation of snow albedo effect on near surface air temperature measurements.”

DESIGN UPDATE 2020

The class leading MeteoShield® Professional has been significantly improved in 2019 based on data from WMO testing and new manufacturing possibilities. Uncertainty of measurement has been lowered significantly for all weather conditions and robustness has been improved as demonstrated by customer experience.

BARANI DESIGN TECHNOLOGIES IS A MANUFACTURER OF the helical MeteoShield Pro, Meteorological sensors, PROFESSIONAL WEATHER STATIONS AND METEOHELIX PERSONAL WEATHER STATIONS