ASTM C1130-21

5.5.1?Ensure that the installation is adequately guarded 5.5.2?For the embedded configuration, analytical and numerical methods have been used to account for the disturbance of the heat flux due to the presence of the HFT. Such analyses are outside the scope of this practice but details are available in Refs 5.5.3?For the surface-mounted configuration, measurement errors have been quantified by Trethowen (9). Empirical calibrations have also been determined by conducting a series of field calibrations or measurements. Such procedures are outside the scope of this practice but details are available in Orlandi et al. (10) and Desjarlais and Tye 5.6?Cryogenic and high temperature calibrations shall consider the effect of parasitic heat transfer due to large environmental temperature differences in performing thermal balances. The calibration and testing of heat flux transducers at cryogenic temperatures using the flat plate boiloff absolute calorimeter described in Guide C1774 and an unguarded flat plate method are described by Johnson et al. 1.1?This practice, in conjunction with either Test Method C177, C518, C1114, or C1363, establishes procedures for the calibration of heat flux transducers that are dimensionally thin in comparison to their planar dimensions.

1.2?This practice describes techniques for determining the sensitivity, 1.3?This practice shall be used in conjunction with Practice C1046 and Practice C1155 when performing in-situ measurements of heat flux on opaque building components. This practice is comparable, but not identical, to the calibration techniques described in ISO 9869-1.

1.4?This practice is not intended to determine the sensitivity of heat flux transducers used as components of heat flow meter apparatus, as in Test Method C518, or used for in-situ industrial applications, as covered in Practice C1041.

1.5?This practice does not preclude the laboratory calibration of heat flux transducers for large-scale insulation systems operated at temperatures lower or higher than that for building components. For these applications, the heat flux transducers shall be calibrated at the temperatures that the transducer will be used.

1.6?The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

1.7?UnitsThe values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard.

1.8?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.9?This 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.