JET ACTIVE OSCILLATOR FLOW RATE METER Russian patent published in 1999 - IPC

FIELD: measurement of volumetric and mass flow rates. SUBSTANCE: jet flow rate meter incorporates jet active oscillator that includes feeding nozzle, two control nozzles, working chamber, separator with concave deflector, two drain conduits, two intake conduits and two feedback channels. Converter of jet pulsations to electric signal is located in one of channels. Width of feedback channels is three-fold greater than width of feeding nozzle. Devices extracting signals proportional to amplitude and frequency of pulsations of jet connected to output of converter measure density and volumetric flow rate correspondingly. Outputs of devices extracting signals are connected to inputs of multiplier. EFFECT: expanded functional capabilities with simultaneous increase of reliability. 2 dwg