GEAR MEASURING FLOW VELOCITY OF SUBSTANCE Russian patent published in 2001 - IPC

FIELD: measurement technology, measurement of velocity and flow rate of substance. SUBSTANCE: gear includes two identical synchrorings, each synchroring being composed of measurement section, piezoelectric converters, former of sounding pulses, amplifier-former, phase detector, controlled pulse generator, counter, measurement unit and AND circuit. Each synchroring is inserted with signal delay element and flip-flop. One of outputs of counter is connected to inputs of flip-flop and delay element whose output is linked to input of phase detector. Output of flip-flop is connected to input of AND circuit and output of the latter is connected to reset circuits of flip-flop and counter. EFFECT: raised measurement precision. 2 dwg