METHOD OF PRESSURE MEASUREMENT Russian patent published in 2018 - IPC G01L11/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to industrial metrology and can be used for high-precision measurement of static and dynamic pressure. Method of measuring the pressure at which in a cavity resonator in the form of a section of a waveguide with one of the end walls in the form of a metal membrane receiving the measured pressure, in the first measurement cycle, electromagnetic oscillations of one of its types H_nmp (n=0, 1, 2,…; m= 0, 1, 2,…, p=1 ,2,…) or E_nmp (n=0, 1, 2,…; m=1, 2,…, p=1, 2,…) with a nonzero index p and measure the resonant frequency ƒ₁ electromagnetic oscillations. In addition, in the second measurement cycle, electromagnetic oscillations of the E₀₁₀ type are excited in this volume resonator with zero indices n and p and measure the resonant frequency ƒ₂ electromagnetic oscillations, perform a joint functional transformation of resonant frequencies ƒ₁ and ƒ₂, the result of which is judged on the measured pressure.

EFFECT: increase of functionality due to simplification of method realization and increase of measurement accuracy.

1 cl, 1 dwg