Scrambling as a D-structure phenomenon

An induction liquid flow meter wherein a device for generating a magnetic field shifting along a liquid passage is energized from a power source of fixed frequency. The power P supplied to the magnetic field generating device is measured and the slip s is determined from the measured power P. The flow rate V of the liquid through the liquid passage is then determined from the measured value of slip s in accordance with a predetermined relationship between slip s and flow rate V.