Maximum experimental safe gap of binary and ternary mixtures

Abstract
Maximun Experimental Safe Gaps (MESG) are the basis for construction and use of flame proof equipment. MESG of many pure substances are experimentally determined. On the basis of about 150 experimentally determined MESGs of binary and ternary mixturtes a estimation methode for MESG of mxtures is developped. This estimation methode is based on the oxygen amount which is needed by the single components of the mixters to undergo stoechimetric oxidation reaction. The MESGs estimated by this methode correspond to the measured ones within the uncertainty of measurement given in IEC 79-1A.