FIELD: measurement technology. SUBSTANCE: gear measuring thermal conductivity includes measurement unit incorporating heater 2 and measurement cell to examine matter which is formed by clearance between upper plate - heater 7, lower plate - cooler 8 and side wall 9 of hot plate having thickness 0,5•10-4 m - 1,0•10-4 m. Plates carry thermocouples connected to measurement unit. Lower plate 8 has ring groove 19 and conduits 20, 21 communicating with reservoir with examined matter. Plate-heater 7 and ring ferrule 10. Ring 6 protruding into region of measurement cell is put on lower butt surface of measurement unit. EFFECT: enhanced functional reliability of gear. 3 dwg
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