Zarr, R.
and Lagergren, E.
(1999),
Interlaboratory 'Pilot Run' Study of Small Heat-Flow-Meter Apparatus for ASTM C 518, Journal of Testing and Evaluation, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860775
(Accessed December 12, 2024)
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Interlaboratory 'Pilot Run' Study of Small Heat-Flow-Meter Apparatus for ASTM C 518
Published
Author(s)
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Abstract
Thermal conductivity measurements of a high-density glass-fiber thermal insulation material near 24 C are presented for the determination of the precision and bias of ASTM Test Method C 518. The measurements have been conducted by 13 laboratories using small (305 by 305 mm) heat-flow-meter apparatus on three specimens of high-density glass-fiber thermal insulation material that were circulated among the laboratories. Test results are analyzed using ASTM Practice E 691 and subsequently compared to measurements of the same specimens conducted in a guarded-hot-plate apparatus using Test Method C 177. The 95% repeatability and reproducibility indexes for precision have been determined to be no worse than 1.1 % and 4.0 %, respectively. A method for estimating bias is presented.Citation
Journal of Testing and Evaluation
Volume
27
Issue
No. 6
Pub Type
Journals
Download Paper
Keywords
bias, building technology, glass fiber, guarded hot plate, heat flow meter, interlaboratory, precision, repeatability, thermal conductivity
Citation
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Created November 1, 1999, Updated February 19, 2017