ASTM F3340-18
(Test Method)Standard Test Method for Thermal Resistance of Camping Mattresses Using a Guarded Hot Plate Apparatus
Standard Test Method for Thermal Resistance of Camping Mattresses Using a Guarded Hot Plate Apparatus
SIGNIFICANCE AND USE
5.1 The thermal resistance of camping mattresses is an important indicator of insulation performance. This test method establishes criteria to measure this property consistently and in conditions relevant to the application. The measured value can be used for evaluating the thermal insulation performance of the camping mattresses, thus assisting with the product construction and design and providing guidance for consumers in comparing and selecting a mattress.
SCOPE
1.1 This test method covers the measurement of the thermal resistance of camping mattresses in conditions of steady-state heat transfer, using a two-plate apparatus. The camping mattress is held under constant compressive force between a guarded hot plate and a cold plate. The primary heat transfer for this method is one dimensional, vertically through the camping mattress thickness. As such this measured thermal insulation value is a repeatable comparative measurement. However, it should be noted that this value may not always correlate to actual insulation performance as real-world heat transfer may differ slightly because of additional heat losses possibly involved (for example, edge heat loss, uncovered surface heat loss, compression rate changes or posture changes during sleep).
1.2 This test method is applicable to all types of camping mattresses (for example, inflating air mattress with or without insulation, inflating air mattress with reflective materials, self-inflating open cell foam mattress with or without coring, closed cell non-inflatable foam mats). Auxiliary insulation of any type shall be excluded in the measurement. Auxiliary insulations are any type of material removable from the mattress (for example, sleeping bags, mattress covers).
1.3 The sample thickness shall not exceed the limit determined by the hot plate dimensions stated in 7.1.2.
1.4 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.
1.5 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.
1.6 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.
General Information
Standards Content (Sample)
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Designation: F3340 − 18
Standard Test Method for
Thermal Resistance of Camping Mattresses Using a
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Guarded Hot Plate Apparatus
This standard is issued under the fixed designation F3340; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This test method covers the measurement of the thermal
mendations issued by the World Trade Organization Technical
resistance of camping mattresses in conditions of steady-state
Barriers to Trade (TBT) Committee.
heat transfer, using a two-plate apparatus. The camping mat-
tress is held under constant compressive force between a
2. Referenced Documents
guarded hot plate and a cold plate. The primary heat transfer
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for this method is one dimensional, vertically through the 2.1 ASTM Standards:
camping mattress thickness. As such this measured thermal
C168 Terminology Relating to Thermal Insulation
insulation value is a repeatable comparative measurement. C177 Test Method for Steady-State Heat Flux Measure-
However, it should be noted that this value may not always ments and Thermal Transmission Properties by Means of
correlate to actual insulation performance as real-world heat the Guarded-Hot-Plate Apparatus
transfer may differ slightly because of additional heat losses D1518 Test Method for Thermal Resistance of Batting
possibly involved (for example, edge heat loss, uncovered Systems Using a Hot Plate
surface heat loss, compression rate changes or posture changes E177 Practice for Use of the Terms Precision and Bias in
during sleep). ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to
1.2 This test method is applicable to all types of camping
Determine the Precision of a Test Method
mattresses (for example, inflating air mattress with or without
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insulation, inflating air mattress with reflective materials, 2.2 ISO Standard:
ISO 8302 Thermal insulation — Determination of steady-
self-inflating open cell foam mattress with or without coring,
closed cell non-inflatable foam mats). Auxiliary insulation of state thermal resistance and related properties — Guarded
any type shall be excluded in the measurement. Auxiliary hot plate apparatus
insulations are any type of material removable from the
mattress (for example, sleeping bags, mattress covers). 3. Terminology
1.3 The sample thickness shall not exceed the limit deter- 3.1 Definitions—For definitions of terms used in this test
mined by the hot plate dimensions stated in 7.1.2. method, refer to Terminology C168 and 3.2.
1.4 Units—The values stated in SI units are to be regarded 3.2 Definitions of Terms Specific to This Standard:
as the standard. No other units of measurement are included in 3.2.1 ambient air speed, n—the air speed of environment
this standard. immediately surrounding the specimen and apparatus.
1.5 This standard does not purport to address all of the 3.2.2 ambient temperature, n—the air temperature of envi-
safety concerns, if any, associated with its use. It is the ronment immediately surrounding the specimen and apparatus.
responsibility of the user of this standard to establish appro-
3.2.3 cold plate, n—isothermal boundary created by a rigid
priate safety, health, and environmental practices and deter-
cooling plate that contacts one side of the specimen and is
mine the applicability of regulatory limitations prior to use.
parallel to the hot plate.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This test method is under the jurisdiction of ASTM Committee F08 on Sports Standards volume information, refer to the standard’s Document Summary page on
Equipment, Playing Surfaces, and Facilities and is the direct responsibility of the ASTM website.
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Subcommittee F08.22 on Camping Softgoods. Available from International Organization for Standardization (ISO), ISO
Current edition approved Oct. 1, 2018. Published November 2018. DOI: Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
10.1520/F3340-18. Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F3340 − 18
3.2.4 guarded hot plate, n—constant temperature heat theproductconstructionanddesignandprovidingguid
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