ASTM International Standard Test Methods for Measuring and Compensating for Transmittance of an Attenuating Medium Using Infrared Imaging Radiometers ASTM E1897-97(2010)

1.1 These test methods cover procedures for measuring and compensating for transmittance when using an infrared imaging radiometer to measure the temperature of a specimen through an attenuating medium, such as a window, filter or atmosphere. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 These test methods may involve use of equipment and materials in the presence of heated or electrically-energiz ed equipment, or both. 1.4 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.