FIELD: analytical and petroleum instrument making. SUBSTANCE: instrument transducer has an outside electrode with the diameter 100 mm made in the shape of a metallic tube and an inner electrode with the diameter 30 mm coaxially placed in it, insulated by a dielectric and having dielectric deflectors on the ends. The inner electrode is connected to the frequency-setting circuit of the self-excited oscillator, its length is form 10 to 30 mm. EFFECT: enhanced accuracy of measurements. 3 dwg
