DEVICE FOR MEASURING LEVEL OF DIELECTRIC LIQUID IN CONTAINER Russian patent published in 2013 - IPC G01F23/00 

FIELD: chemistry.

SUBSTANCE: device has a level sensor placed vertically in a container and made in form of a coaxial resonator, having at the bottom end section an inner and (or) an outer conductor of a smaller diameter, which is connected to a unit for exciting electromagnetic oscillations in two frequency ranges, measuring and combined transformation of two resonance frequencies of the resonator. The bottom end section of the section of the coaxial resonator with an inner and (or) outer conductor of smaller diameter lies horizontally. In one version of the device, the bottom end section with an inner and (or) outer conductor with a smaller diameter which lies horizontally is filled, in a stepwise manner, by the liquid as it enters the container and is emptied when the liquid is removed from the container. In another version of the device, between the bottom end of the resonator and its section with a smaller diameter there is a horizontal section of a resonator which is filled, in a stepwise manner, by the liquid as it enters the container and is emptied when the liquid is removed from the container.

EFFECT: high measurement accuracy.

3 cl, 5 dwg