Turbine flowmeter

Turbine flowmeter

Working principle: Fluid flows through the sensor housing because the impeller blade and flow direction have a certain Angle, fluid momentum makes the blade with rotational torque, overcome friction torque and fluid resistance after the blade rotation, the torque balance after the speed is stable, under certain conditions, the speed is proportional to the flow rate, due to the magnetic conductivity of the blade, It is in the signal detector (composed of the coil and permanent magnet steel) of the magnetic field, rotating blade cutting lines, periodically changing coil magnetic flux, so that the coil ends induction electrical pulse signal, the signal after amplifier amplification plastic, form a certain amplitude of continuous rectangular pulse wave, can be spread far to display instrument, Displays the instantaneous flow and cumulative amount of fluid. Within a certain flow range, the pulse frequency F is proportional to the instantaneous flow rate Q of the fluid flowing through the sensor.
Features: It has the advantages of high precision, good repeatability, simple structure, few moving parts, high-pressure resistance, wide measuring range, small volume, lightweight, small pressure loss, easy maintenance, and so on. It is used for measuring low viscosity gas in closed pipes.

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