METHOD OF MEASURING PHYSICAL QUANTITY Russian patent published in 2016 - IPC G01R27/00 

FIELD: measuring equipment.

SUBSTANCE: invention can be used for high-accuracy determination of various physical quantities. According to a method of oscillations are excited in the resonator at fixed frequency. At the change of the initial natural frequency of the resonator in fixed limits of [f _p1, f _p2] its amplitude-frequency characteristic, the area under it, which indicates the measured physical quantity. Resonator is waveguide resonator with terminal load with resistor X_H, area under the amplitude-frequency characteristic is defined according to the relationship , where - initial, at nominal value of the measured physical quantity, the value of X_H, [X_H1, X_H2] - fixed limits change X_H0, corresponding fixed limits [f _p1, f _p2], and - amplitude of vibrations in a waveguide resonator if X_H0 end load.

EFFECT: technical result consists in simplification of measurement process.

1 cl, 2 dwg

Н - H