FIELD: measurement technology. SUBSTANCE: gear analyzing coal products makes it possible to determine air reactivity, carbon dioxide reactivity, carbon black index and coefficient of thermal expansion in process of one analysis. Gear includes at least one tube furnace to find air reactivity, CO2 reactivity and carbon black index and at least one tube furnace to determine coefficient of thermal expansion of coal product. Each furnace is connected to common processing unit which checks measurement instruments and process analytical data. EFFECT: enhanced functional efficiency and reliability of gear. 2 cl, 3 dwg
