Yunyi Electronic Water Flowmeter Magnetic Flow Sensor Water Flow
Sensor
Electromagnetic flowmeter is an instrument that measures the volume
flow of conductive liquids based on Faraday's law of
electromagnetic induction. Its main structure includes measuring
tube, electrode, excitation system, signal converter, etc. There
are no parts that hinder the flow of fluid in the measuring tube,
and there is almost no pressure loss; a pair of electrodes are
installed on the inner wall of the measuring tube, in contact with
the fluid, for detecting the induced potential; the excitation
system generates a uniform magnetic field; the signal converter
amplifies, converts and processes the weak electrical signals
detected by the electrodes, and finally outputs a standard signal
proportional to the flow rate.
When the conductive liquid flows in the measuring tube, it is
equivalent to a conductor cutting the magnetic lines of force.
According to Faraday's law of electromagnetic induction, an induced
electromotive force will be generated in the direction
perpendicular to the flow direction, and the magnitude of the
electromotive force is proportional to the flow rate of the fluid,
the magnetic field strength and the inner diameter of the measuring
tube. By measuring the magnitude of the induced electromotive
force, the flow rate of the fluid can be obtained through
calculation.
Product features of electromagnetic flowmeters
1. High measurement accuracy: It is not affected by changes in
fluid density, viscosity, temperature, pressure and conductivity,
and can accurately measure fluid flow. The measurement accuracy can
usually reach ±0.5%, and some high-precision models can even reach
±0.2%, providing reliable guarantee for accurate measurement in
industrial production.
2. No obstruction components: There are no components in the
measuring tube that hinder the flow of fluid, and no additional
pressure loss will be generated, which reduces the energy
consumption during fluid transportation. It is especially suitable
for measuring large-diameter and low-flow fluids, such as urban
water supply and drainage systems.
3. Wide range: The measurable flow range is large, and the range
ratio is usually 10:1 - 20:1, which can meet the needs of flow
measurement under different working conditions. From small flow to
large flow, it can stably measure, and can adapt to large changes
in flow without changing the instrument.
