FLOWMETER Russian patent published in 1998 - IPC

FIELD: instrumentation engineering. SUBSTANCE: flowmeter has two resonators positioned along pipeline, on external side of the latter. Each resonator has flexible wall in common with pipeline. It also includes units connected to each resonator for generation of electromagnetic oscillations in resonator and recording of resonant frequency of resonator electromagnetic oscillations. These units are connected with their outputs to inputs of comparison units of resonator resonant frequencies. Each resonator is made as U-shaped waveguide. Its second end wall is also flexible and common with pipeline wall. It is positioned in the same transverse section of pipeline. EFFECT: enhanced sensitivity. 2 dwg