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SOLUTIONS FOR PRECISION MEASUREMENTS IN METEOROLOGY

Solutions for measuring relative humidity and other parameters in meteorological and other applications

In meteorology, the accuracy of measurement data is crucial for accurate weather forecasting and climate research. Rotronic humidity and temperature sensors have an excellent reputation for delivering precise results even in the most demanding environments, especially where high humidity and low temperatures prevail. The product range offers high performance and a wide range of configurations to suit every application, and in particular provides solutions for precision measurements in meteorology.

Even the best sensors measure inaccurately if the conditions on the sensor are not representative of the actual climate conditions. Without a suitable weather shield, the sensors will not read correctly. Weathering can affect poorly ventilated shields by creating a microclimate around the sensors, causing measurement errors.

Ventilation shields are therefore used in applications that require a high degree of precision. High-accuracy measurements are even more important for energy optimisation in HVAC applications. The more accurate the measurements, the smaller the control errors and the greater the energy savings.

Rotronic meteorological sensors combined with ventilated weather and radiation shields ensure the best possible measurement results. They can offer virtually the same performance as a “chilled mirror” meteorological system, as used by many national meteorological organisations, at a significantly lower cost.

Weather shields are crucial in meteorology and have been developed in close collaboration with MeteoSwiss.

METEOROLOGY MEASUREMENT SOLUTIONS, meteorology measurements, meteorology sensors, meteorology instruments and devices, meteorology equipment
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Picture: meteorological conditions

ELPRO Lepenik & Co. offers you a complete solution for measuring relative humidity and other parameters in meteorological and other applications from our Rotronic product range:

SOLUTIONS FOR PRECISION MEASUREMENTS IN METEOROLOGY AND BEYOND

HC2-S/HC2-S3 standard heated relative humidity sensors

HC2A-S3 sensors belong to the HC2A-S sensor family. These measure humidity and temperature and calculate the dew point or frost point. The HC2A-S3H meets the highest demands for precision measurement. The same applies to the HC2A-S3A , but with a different filter.

HC2-S (3) – heated sensors are suitable for use where high humidity prevails. Under such conditions, conventional sensors can become “coated” with condensation and thus emit false readings.

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Image: meteo probe
Standard analogue meteo sensors with fixed sensors

The standard MP100A/MP400A fixed sensor combined meteorological sensors (analogue technology) are suitable for humidity and temperature.

Areas of use, applications:

  • weather stations, agriculture, ice and snow warning systems
The MP400A standard analogue fixed sensor weather sensor is a combined humidity and temperature sensor.
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Image:Standard MP 400A meteosensor
MP102H/402H meto relative humidity transmitter

The MP102H and MP402H meteorological transmitters with analogue output and RS-485 interface measure humidity and temperature with the interchangeable HC2A-S3 weather sensor. Temperature measurements can be improved with an external Pt100 sensor in different accuracy classes. The two meteo-converters are compatible with the HC2A-S3 sensor.

Areas of use,applications:

  • weather stations, snow cannons, monitoring of roads, bridges and airports, snow and ice warning systems, surveys in remote areas
MP102H meteorological transducer for measuring relative humidity and temperature, meteorological measurement, meteorological sensor, meteorological sensor, meteorological sensor, meteorological measurement, meteorological measurement, weather forecast, weather forecast, meteorological gauge, meteorological measurement, meteorological precision, meteorological precision, meteorological precision, meteorological precision, meteorological measurement, meteorological equipment and devices, meteorological devices. meteorological equipment and devices, meteorological equipment and devices, accurate and precise meteorological measurement, accurate and precise meteorological measurement, accurate weather forecast, accurate weather forecast, climate forecast, accuracy and precision in meteorology, parameters in climate forecast, accurate climate forecast, accurate climate forecast, meteorology, accurate and precise weather forecast, accurate and precise weather forecast, accurate and precise weather forecast, meteo, meteo instruments, meteorological instruments
Figure: Meteorological relative humidity and temperature transmitter MP102H
Relative humidity and temperature transmitter

Relative humidity and temperature transmitter HFM53 (3-wire) is designed for fixed installation in outdoor applications and offers high measurement accuracy. Ideal for meteorological applications, it has a robust housing and a connector for the HC2-S3 interchangeable probe.

Figure: HFM53 Relative Humidity and Temperature Transducer for Meteorology
Weather cap with active ventilation

Weather cap with active ventilation is a type of shield that protects the meteo sensors from weather and radiation. It has RS12T protection with 12 V DC fan and RS24T protection with 24 V DC fan. Developed in collaboration with MeteoSwiss, this state-of-the-art device minimises the effects of thermal radiation on measured humidity and temperature values.

Areas of use,applications:

  • snow guns, weather stations, agricultural meteorology and building management systems
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Image:RS12T weather cap with active ventilation
Weather shield with natural ventilation

Weather shields with natural ventilation are used where natural ventilation (wind) provides sufficient air flow, such as measuring stations in the mountains.

Areas of use,applications:

  • snow cannons, weather stations and building management systems
AC1000 weather cap with natural ventilation is a naturally ventilated radiation shield, measurement in meteorology, meteo sensor, meteorological sensor, meteorological sensor, meteorology sensor, measurement in meteorology, weather forecast, weather forecast, meteorological gauge, meteorological measurement, accurate measurement in meteorology, accurate measurement in meteorology, accurate measurement in meteorology, accurate meteorological measurement, meteorological equipment and device, meteorological instrumentation, accurate and precise meteorological measurement, accurate and precise meteorological measurement, accurate weather forecast, accurate weather forecast, climate forecast, accuracy and precision in meteorology, parameters in climate forecast, accurate climate forecast, accurate climate forecast, meteorology, accurate and precise weather forecast, accurate and precise weather forecast, accurate and precise weather forecast, meteo, meteo instruments, meteorological instruments
Picture. AC1002

Calibration

ELPRO Lepenik we are temperature and humidity experts for routine controls and validations of various thermal processes.

At the ELPRO Calibration Laboratory, we also calibrate your measuring equipment in accordance with the SIST EN ISO/IEC 17025:2017 standard.

Author Katarina Žunko
May 2021

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