MEASURING DEVICE OF PHYSICAL PROPERTIES OF LIQUID CONTAINED IN TANK Russian patent published in 2014 - IPC G01N22/04 G01N22/00 

FIELD: instrumentation.

SUBSTANCE: device represents the first operating sensitive element in the form of the first resonator - a piece of a coaxial line, which is filled with a test liquid, between the hollow internal and external conductors of which an arrangement is made for a set of one or more metal cylinders coaxial to them and put one into another and in turn short-circuited and opened on one of their ends, and a reference sensitive element in the form of the second resonator filled with a reference liquid, which is a cavity of the internal conductor of the first resonator; with that, both resonators are connected through the corresponding elements of excitation and pickup of oscillation and a line of communication of these resonators with the corresponding electronic units, the outputs of which are connected to the input of a functional converter connected with its output to an indicator. The second resonator is made similar to the first resonator, i.e. it is coaxial; with that, its external conductor is represented with an inner surface of the hollow internal conductor, the internal conductor - a central metal rod, and between itself and the above external conductor an arrangement is made for a set of one or more metal cylinders coaxial to them and put one into another, which are in turn short-circuited and opened on one of their ends.

EFFECT: higher measurement accuracy.

1 dwg