1.1本试验方法包括使用通过黑体孔径发射的窄光束来校准量热装置。虽然热量计通常对主要为对流的入射热作出响应，但这种校准方法使用辐射能。辐射能的使用要求确定热量计表面辐射通量的绝对值，以提供准确的校准。该方法适用于代替广角光源技术，适用于相对较低的辐照度值（通常小于10 W/m ). 1.2本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This test method covers employing the narrow beam of thermal energy emitted through the aperture of a blackbody to calibrate calorimetric devices. Although the calorimeter normally responds to incident heat which is predominantly convective, this method of calibration employs radiant energy. Use of radiant energy dictates that the absolute value of radiant flux at the surface of the calorimeter be determined to provide an accurate calibration. This method, applicable in place of the wide-angle source technique, is suited to relatively low values of irradiance (typically less than 10 W/m ). 1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibililty of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.