Textiles. Physiological effects. Measurement of thermal and water-vapour resistance under steady-state conditions (sweating guarded-hotplate test) (ISO 11092:2014)
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ISO 11092:2014 specifies methods for the measurement of the thermal resistance and water-vapour resistance, under steady-state conditions, of e.g. fabrics, films, coatings, foams and leather, including multilayer assemblies, for use in clothing, quilts, sleeping bags, upholstery and similar textile or textile-like products. The application of this measurement technique is restricted to a maximum thermal resistance and water-vapour resistance which depend on the dimensions and construction of the apparatus used (e.g. 2 m2·K/W and 700 m2·Pa/W respectively, for the minimum specifications of the equipment referred to in ISO 11092:2014).
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Terms and definitions
3 Symbols and units
4 Principle
5 Apparatus
6 Test specimens
6.1 Materials ≤ 5 mm thick
6.2 Materials > 5 mm thick
7 Test procedure
7.1 Determination of apparatus constants
7.2 Assembly of test specimens on the measuring unit
7.3 Measurement of thermal resistance Rct
7.4 Measurement of water-vapour resistance Ret
8 Precision of results
8.1 Repeatability
8.2 Reproducibility
9 Test report
Annex A Mounting procedure for specimens containing loose filling materials or having uneven thickness (normative)
Annex B Determination of correction terms for heating power (normative)
Annex C Guidance on test specimen assembly for materials prone to swelling (informative)