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A sunshine monitor for automatic registration of sunshine duration

Ein Sonnenscheingeber für die automatische Registrierung der Sonnenscheindauer

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Summary

A sunshine monitor and its calibration is described. Its important characteristics are: it has an electrical DC level output which is high (> 4.5 V) for “sunshine” and low (< 0.4 V) for “no sunshine”; it is calibrated for a threshold sensitivity of 200 W/m2, which meets the sunshine definition of the World Meteorological Organization; it requires very little service and contains no moving parts.

Zusammenfassung

Ein Sonnenscheingeber und seine Eichung wird beschrieben. Er ist gekennzeichnet durch folgende Merkmale: Sein elektrischer Spannungsausgang liegt hoch (> 4,5 V) für den Fall „Sonnenschein” und tief (< 0,4 V) für den Fall „kein Sonnenschein” Seine Eichung auf eine Schwellwertintensität von 200 W/m2 folgt der Sonnenscheindefinition durch die World Meteorological Organization. Er erfordert keine nennenswerte Wartung und er enthält keine beweglichen Teile.

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References

  1. Levert, C.: Über die Auswertung der Registrierungen des Sonnenscheinautographen Campbell-Stokes. Arch. Met. Geoph. Biokl., Ser. B11, 135–137 (1961).

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  2. Bider, M.: Über die Genauigkeit der Registrierungen des Sonnenscheinautographen Campbell-Stokes. Arch. Met. Geoph. Biokl., Ser. B9, 199–230 (1958).

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  3. Thörnblad, H.: A Sunshine Monitor with Electrical Output and without Moving Parts. J. Physics E: Scientific Instruments8, 481–486 (1975).

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Authors and Affiliations

  1. The National Swedish Institute for Building Research, Box 785, S-801 29, Gävle, Sweden

    P. Lau

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  1. P. Lau
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With 5 Figures

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Lau, P. A sunshine monitor for automatic registration of sunshine duration. Arch. Met. Geoph. Biocl., Ser. B 29, 89–97 (1981). https://doi.org/10.1007/BF02278193

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  • DOI: https://doi.org/10.1007/BF02278193

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