Solar energy. Specification and classification of instruments for measuring hemispherical solar and direct solar radiation Ingestion-build-47786 for single start parallel screw

for single start parallel screw threads of British Association (B

including flotation aids such as arm bands and swim seats (see A

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Contents of BS EN 14399-9:

Contents of BS EN 12312-20:

Solar energy. Specification and classification of instruments for measuring hemispherical solar and direct solar radiation Ingestion-build-47786 for single start parallel screwWhat is this standard about? This document establishes a classification and specification of instruments for the measurement of hemispherical solar and direct solar radiation integrated over the spectral range from approximately 0,3 m to about 3 m to 4 m. Instruments for the measurement of hemispherical solar radiation and direct solar radiation are classified according to the results obtained from indoor or outdoor performance tests. This document