(AIT) Auto-Ignition Temperature
CEI EN IEC 60079-0 Atmosfere esplosive Parte 0: Apparecchiature – Prescrizioni generali
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3.6 auto-ignition temperature (AIT)
lowest temperature (of a surface) at which, under specified conditions (according to IEC 6 0079-20-1), an ignition of a flammable gas or vapour in mixture with air or air/inert gas occurs