Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-10-2019

Publisher

American Society for Testing and Materials

1.1This practice describes the calculation of luminous (photometric) transmittance and reflectance of materials from spectral radiant transmittance and reflectance data obtained from Test Method E903.

1.2Determination of luminous transmittance by this practice is preferred over measurement of photometric transmittance by methods using the sun as a source and a photometer as detector except for transmitting sheet materials that are inhomogeneous, patterned, or corrugated.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee	E 44
DocumentType	Standard Practice
Pages	5
ProductNote	THIS STANDARD ALSO REFERS TO Standard Illuminator D65
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM E 971 : 2011

ASTM G 173 : 2003	Standard Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37° Tilted Surface
ASTM G 173 : 2003 : R2020	Standard Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37° Tilted Surface
ASTM E 1175 : 1987 : R1996	Standard Test Method for Determining Solar or Photopic Reflectance, Transmittance, and Absorptance of Materials Using a Large Diameter Integrating Sphere
ASTM E 772 : 2015 : R2021	Standard Terminology of Solar Energy Conversion
ASTM E 772 : 2015	Standard Terminology of Solar Energy Conversion
ASTM E 1175 : 1987 : R2022	Standard Test Method for Determining Solar or Photopic Reflectance, Transmittance, and Absorptance of Materials Using a Large Diameter Integrating Sphere
ASTM G 173 : 2023	Standard Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37° Tilted Surface
ASTM E 1175 : 1987 : R2015	Standard Test Method for Determining Solar or Photopic Reflectance, Transmittance, and Absorptance of Materials Using a Large Diameter Integrating Sphere
ASTM E 972 : 1996 : R2021	Standard Test Method for Solar Photometric Transmittance of Sheet Materials Using Sunlight