EUROLAB laboratory provides testing and compliance services within the scope of EN 14706 standard. The EN 14706 standard specifies equipment and procedures for determining the maximum service temperature of flat insulation products. Applicable to thermal insulation products. It covers the highest temperature measurement at which the insulation product continues to operate within the specified performance limits when installed at the recommended thickness in a particular application.
The required performance may be in the areas of dimensional stability, thermal properties and mechanical properties, as well as resistance to the occurrence of hazards such as changes in appearance and internal self-heating.
In the current test procedure used as a reference, the test specimen is exposed to a temperature difference from ambient to the maximum service temperature. This may not reflect actual application conditions when products are exposed to different temperatures on the two main surfaces, for example in multi-layer systems or for faced products where the coating may limit the maximum service temperature.
Measure the thickness, length and width after one-sided heat treatment for a specified period of time at the maximum service temperature achieved using a given rate of temperature rise. The thickness of the test specimen is measured during heat treatment, and the length and width only after cooling to ambient temperature. The procedure can be an iterative process.
Additional requirements for assessing the maximum service temperature of certain materials are described in the normative annexes to this European Standard or the relevant product standard or any other European Technical Specification.
If the change in the mean value (test result) for any size exceeds the value specified in the relevant product standard, the test should be repeated at a lower temperature until the size changes are equal to or smaller than the specified value. This temperature is then considered the maximum service temperature, provided the requirements are also met.
To indicate the maximum service temperature, the steps in Celsius must be as specified in the relevant product standard or in the annex to this European Standard. If steps are not specified, the maximum service temperature shall be declared in steps of not less than 100 °C for temperatures up to 5 °C and in steps of not less than 100 °C for temperatures above 10 °C. Results may not be comparable for a product tested at different thicknesses and/or different loads.
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