电磁flowmeter

Advantages of FFM62 Series of Intelligent Electromagnetic Flowmeters The greatest advantage of FFM62 series of intelligent electromagnetic flowmeters is that they are very stable without excursion and they have good repeatability. FFM62 intelligent electromagnetic flowmeters adopt low-frequency rectangular wave excitation with stable exciting current. This way of excitation only has a little interference by electromagnetism; it does not generate eddy effect and polarization; besides, it also has only a little quadrature interference and in-phase interference. Therefore, the electromagnetic flowmeters have following advantages: little current, low power consumption, no heating, stable zero point, no excursion and little pollution and influence of electrodes. The output of the electromagnetic flowmeter is not related to the flow states (laminar flow and turbulence) under symmetrical distributions; so, its range ratio is very large and it can be as large as 100:1;. Its range of measurable flow rate is 0.3 12m/s (extended range: 0.1 15m/s).These series of flowmeters can measure flow rate of conductive fluids like smudgy mediums, caustic mediums, suspended solid liquid medias.There is no any part in the measuring tubes to block fluids from flowing, what contact fluids are only electrodes and the linings with no blocking or sticking. In accordance with corrosiveness, abrasiveness and different temperatures of mediums, different linings and electrodes are selected to measure smudgy mediums, caustic mediums, suspended solid liquid medias. No additional pressure drop or power consumption.These is no mechanical inertia. The flowmeters act sensitive and they can measure instantaneous pulsating flow and also flow rates in two opposite directions.Measurements will be influenced by changes of temperature, viscosity, density and conductivity (within a certain range) and will keep stable.The converters are with LCD displays. The menus can be set through keys. The standard output signal is frequency signal, 4 200mA current output are available.HART protocol communication The converters apply the patent technology of function and magnetic filed analysis; as a result, the influences of refracted flows are eliminated drastically and precisions and stabilities of measurements are guaranteed.As to flow rates of serous fluids of which “noises” will interfere corresponding measurements, each of FFM62 series of flowmeters is equipped with a patent converter that has a “noise suppressor”, so the products can remove clutters entirely and guarantee stablities and precisions of measurements.Anti-lightning components are installed in circuits of converters, so as to make them suitable to be assembled and utilized in outdoors.Special multi-electrode structure eliminate the entire interferences of electric noises and this increases precisions of measurements.Special wiring method of electrodes clears up all the quadrature interferences and excursions of the zero point, making FFM62 series of electromagnetic flowmeters more stable while getting better linearity and repeatability.