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Pyranometers Applications

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    Instruments and analyzers for DHI measurements

    Diffuse irradiance measurements: Diffuse Horizontal Irradiance measurements are performed with a thermopile sensor called Pyranometer mounted on a Sun tracker or shading ring.  When the pyranometer is installed on an automatic sun tracker, the diffuse radiation can be measured in two different ways. Measuring Diffuse irradiance requires an accurate pyranometer with low offset properties. Duirng clear sky conditions the DHI irradiance (W/m2) is less than 20% of the total irradiance. Zero offsets lead to...

    By EKO Instruments based in San Jose, CALIFORNIA (USA).

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    Instruments and analyzers for accurate solar radiation measurements

    Conducting reliable and accurate solar radiation measurements requires some knowledge and attention: think of environmental influences (wind, rain/snow, soling), re-calibration (bi-annually), not to mention data processing, spectral effects, etc. Essentially, accurate broadband solar radiation measurements are obtained using two components: a suitable set of pyranometers, including an optional pyrheliometer (DNI sensor) with sun tracker, and an adequate data logger.

    By EKO Instruments based in San Jose, CALIFORNIA (USA).

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    Instruments and analyzers for DNI measurements with a pyrheliometer

    Solar Direct Normal Irradiance (DNI) represents the direct solar component and contains about 80% of the total solar energy budget on earth. Outside the atmosphere (AM0) the solar irradiance is considdered as a constant (1367 W/m2) that slightly fluctuates with a 11 year cycle. The DNI at the earth surface is highly variable due to the atmospheric conditions (clouds, aerosols, water vapor and molecules).

    By EKO Instruments based in San Jose, CALIFORNIA (USA).

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    Instruments and analyzers for solar radiation measurements in PV applications

    Solar radiation is not only the driving force behind the Earth’s weather phenomena, it also drives photovoltaic energy production. One day of solar energy received by the Earth exceeds the amount of worldwide energy consumption per year. Exploring this merely inexhaustible source of energy - either by direct transformation of radiant energy into electricity or by indirect energy production via wind, waves, etc. - seems to be the obvious way to go. In this context solar radiation measurements are of...

    By EKO Instruments based in San Jose, CALIFORNIA (USA).

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