ASTM E913

Standard Method for Calibration of Reference Pyranometers with Axis Vertical by the Shading Method

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Organization: ASTM
Publication Date: 31 December 1982
Status: inactive
Page Count: 8
ICS Code (Solar energy engineering): 27.160
scope:

1. Scope

1.1 This method covers the calibration of reference pyranometers with field angles of 180° (2π steradians) utilizing self-calibrating absolute cavity pyrheliometers having field angles of 5.0° and slope angles of 0.75 to 0.8° as the primary reference instrument.

1.2 This method is applicable to reference pyranometers regardless of the radiation receptor employed.

1.3 Two types of calibrations are covered: (1) Type I employs a self-calibrating absolute cavity pyrheliometer, and (2) Type II calibrations employ a secondary reference pyrheliometer as the standard instrument.

1.4 This standard calibration of reference pyranometers covers the sensitive element in the horizontal plane only, that is, with the axis vertical. The calibration of reference pyranometers at various tilt angles is covered in another ASTM standard (see Section 2.).

1.5 This method is only applicable to calibration procedures using light from the sun.

Document History

ASTM E913
December 31, 1982
Standard Method for Calibration of Reference Pyranometers with Axis Vertical by the Shading Method
1. Scope 1.1 This method covers the calibration of reference pyranometers with field angles of 180° (2π steradians) utilizing self-calibrating absolute cavity pyrheliometers having field angles of...

References

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