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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
Split electromagnetic flowmeter is a type of electromagnetic
flowmeter, in which the sensor and converter are installed
separately and connected by cables. Compared with the integrated
electromagnetic flowmeter, the split electromagnetic flowmeter has
the following advantages:
1. Flexible installation
Optimized spatial layout: The split design allows the sensor and
converter to be installed in different locations according to the
actual situation on site, which can effectively solve some
installation problems caused by small space or complex equipment
layout. For example, near some large industrial pipelines, the
sensor can be installed on the pipeline, and the converter can be
installed on the operating table far away from the pipeline, which
is convenient for operators to set parameters and read data.
2. Easy maintenance and overhaul: The sensor and converter are
installed separately. When performing maintenance and overhaul,
there is no need to disassemble the entire flowmeter. Only the
sensor and converter need to be operated separately, which reduces
the difficulty and workload of maintenance. Especially for some
sensors installed at high places or inaccessible locations, by
installing the converter in an easy-to-operate position, it can
greatly facilitate the maintenance personnel to perform daily
maintenance and troubleshooting of the flowmeter.