物理安全检测
ASTM E903采用积分球法测试太阳光吸收比，反射比和透射比的方法标准
ASTM E903采用积分球法测试太阳光吸收比，反射比和透射比的方法标准—标准名称
ASTM E903 Standard test method for solar absorptance, reflectance, and transmittance of material using intergrating spheres
ASTM E903采用积分球法测试太阳光吸收比，反射比和透射比的方法标准
ASTM E903采用积分球法测试太阳光吸收比，反射比和透射比的方法标准—适用范围
1 This test method covers a technique for determining the solar reflectance of flat opaque materials in a laboratory or in the field using a commercial portable solar reflectometer. The purpose of the test method is to provide solar reflectance data required to evaluate temperatures and heat flows across surfaces exposed to solar radiation.
2 This test method does not supplant Test Method E903 which measures solar reflectance over the wavelength range 250 to 2500 nm using integrating spheres. The portable solar reflectometer is calibrated using specimens of known solar reflectance to determine solar reflectance from measurements at four wavelengths in the solar spectrum: 380 nm, 500 nm, 650 nm, and 1220 nm. This technique is supported by comparison of reflectometer measurements with measurements obtained using Test Method E903. This test method is applicable to specimens of materials having both specular and diffuse optical properties. It is particularly suited to the measurement of the solar reflectance of opaque materials.
3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
4 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.
ASTM E903采用积分球法测试太阳光吸收比，反射比和透射比的方法标准--测试要求
太阳光透射比 Solar transmittance
太阳光反射比 Solar reflectance
太阳光 吸收比 Solar absorptance
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