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sales01@cxflowmeter.com

advantages of magnetic flow meter

 

Wide range of application: the development of electronic technology and the continuous emergence of new insulating materials and magnetic materials, there are conditions to manufacture different forms of electromagnetic flowmeters, which can solve the corrosion and pollution of the measuring medium to the electrodes. Capacitive electromagnetic flowmeter can solve the measurement of fluid with medium conductivity as low as 1mS/m, instead of traditional mechanical volume flowmeter, it is used to measure pure water, sugar desalination and low conductivity fluids containing oil.

 

Height: New excitation methods such as low-frequency rectangular wave excitation, dual-frequency excitation, programmable excitation, etc. improve the signal-to-noise ratio of the sensor output flow signal; the advanced integrated operational amplifier greatly reduces the noise of the device; digital processing methods are adopted to improve the signal-to-noise ratio of the sensor. The measurement accuracy and performance of the electromagnetic flowmeter have been continuously improved; the theoretical study of the electromagnetic flow induction signal weight function has solved the non-axisymmetric flow measurement of the flow velocity distribution in the pipeline to a certain extent.

 

High reliability: The change of the zero point of the electromagnetic flowmeter is mainly caused by the secondary magnetic flux formed by the eddy current in the alternating magnetic field. Low frequency rectangular wave excitation can effectively reduce the generation of secondary magnetic flux, so the zero point is stable. The frequency of the rectangular wave magnetic field is an integral multiple of the power frequency frequency, and the AC average value of the signal sampling is zero, which greatly cancels the influence of the power frequency interference in the signal. The modulated dual-frequency excitation and programmable excitation can reduce the influence of the electrochemical noise of the electrode when measuring the slurry fluid, and improve the reliability and stability of the sensing signal. The high-integration microelectronic components reduce the failure rate of hardware, and the shielding technology of hardware and software effectively increases the reliability of the converter.

 

Low energy consumption: The magnetic field of the low frequency rectangular wave excitation works in the DC state most of the time, and the eddy current loss of the iron core is small; the reduction of the magnetic induction intensity greatly reduces the energy consumption of the electromagnetic flowmeter. At present, the power consumption of general electromagnetic flowmeters is within 10-20W. Two-wire electromagnetic flowmeter powered by DC 24V voltage, including excitation current and signal output is only 4-20mA.


For more electromagnetic flowmeter parameters and quotations, please contact winny:sales01@cxflowmeter.com