J. Phys. IV France
Volume 12, Numéro 7, August 2002
Page(s) 207 - 213

J. Phys. IV France
12 (2002) Pr7-207
DOI: 10.1051/jp4:20020285

Maximum experimental safe gap of binary and ternary mixtures

E. Brandes and T. Redeker

Physikalisch Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany

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.

Key words: Maximum Experimental Safe Gap, estmation methode, binary and ternary mixtures

© EDP Sciences 2002