Add the following new text after Note 1 of

The temperature tests shall be conducted at or below the rated maximum ambient temperature and the results shall be linearly corrected for the rated maximum ambient temperature. The measurement of temperatures as prescribed in this document, and in the specific standards for the Types of Protection concerned, shall be made in still air.

Source: iec.ch

IEC 60079-0 shall be the basis of all kick off meetings – the common understanding of Ex.

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