GAS FLOW METRE Russian patent published in 2010 - IPC G01F1/20 G01F7/00 

FIELD: machine building.

SUBSTANCE: flow metre consists of frequency sensor of consumption in form of fluid oscillator (22) with nozzle (2), of connected to computer (14) converter (7) of pressure fluctuations of fluid oscillator into frequency, of bypass (17) with device for pressure drop, and of electro-magnetic valve (15). The device for pressure drop is made as a set of cells-jet nozzles (18) each corresponding to a geometrically like nozzle of fluid oscillator (22). End positions of a gate of the electro-magnetic valve are fixed with constant magnets (23). During measurement the computer controls the gate of the electro-magnetic valve and turns it on into a position "open-closed" by threshold signals specified with values of frequencies corresponding to chosen values of pressure drop at the jet frequency sensor of consumption.

EFFECT: upgraded accuracy under mode of partial measurement of consumption, expanded range of measurement.

2 cl, 4 dwg