Документы

ASTM International

Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation
 N E971

Annotation

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

Determination 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.

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

This 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 and health practices and determine the applicability of regulatory limitations prior to use.

Автоматический перевод:

Общепринятая практика для вычисления светоизмерительного коэффициента пропускания и коэффициента отражения материалов к солнечному излучению

Эта практика описывает вычисление яркого (светоизмерительного) коэффициента пропускания и коэффициент отражения материалов от спектрального излучающего коэффициента пропускания и данных коэффициента отражения, полученных из Метода тестирования E903.