FIELD: fire-preventing equipment. SUBSTANCE: method involves providing forced explosion of gaseous mixture in explosion-proof chamber, when lower explosion threshold for any dangerously explosive gas existing in room atmosphere is created. Apparatus has microcircuits, weight of apparatus is 0.5 kg, power supply of 220 V, power consumption not in the excess of 400 W per month. EFFECT: increased precision in determining the moment when explosion dangerous gaseous mixture concentration is created in room atmosphere, and increased efficiency in eliminating emergency situation. 3 cl, 1 dwg
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