FIELD: measuring engineering.
SUBSTANCE: device has long line whose end is connected with a sensor which is in a contact with the mixture. The sensor is connected to the circuit of generator which is connected with frequency meter. The sensor is made of a capacitor which is connected to the line through the main inductive coils and to the generator through the two additional coils. The line can be made of coaxial line or shielded two-wire line provided with the capacitive sensor made of cylindrical capacitor or shielded flat capacitor, respectively. The surface of at least one of the wires of the sensor which is in a contact with the mixture can be covered with a dielectric shell.
EFFECT: enhanced accuracy of measuring.
3 cl, 4 dwg
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