Clamp type flowmeter

Clamp type flowmeter
Overview:
The electromagnetic flowmeter is an inductive instrument that measures the volume flow of conductive media. It is suitable for measuring the volume flow of conductive liquids with a conductivity greater than 5μs/cm. It can be widely used in source water and clean water in the fields of petroleum, chemical industry, metallurgy, and tap water. Flow measurement of water, sewage and other conductive liquids.
Features:
* There are no moving and blocking parts in the measuring tube, and no pressure loss.
* The measurement is not affected by changes in liquid density, viscosity, temperature, pressure and conductivity.
* Choose lining material and electrode material, have good corrosion resistance and wear resistance.
* Low-frequency rectangular wave excitation is not affected by power frequency and various stray interferences on site, and the work is stable and reliable.
* Not affected by the direction of the fluid, both positive and negative installations can be accurately measured.
* LCD backlight display of Chinese characters.
working principle:
The working principle of electromagnetic flowmeter (see Figure 1) is based on Faraday's law of electromagnetic induction. That is: when the conductive liquid cuts the magnetic field line in the magnetic field, it will generate an induced electromotive force in the direction perpendicular to the flow velocity vector and the magnetic field vector. The induced electromotive force is:
E=BdV
                          In the formula: B—Magnetic induction intensity (T)
                          d—electrode spacing (m)
                          V—average flow velocity of fluid (m/s)
Flow rate Q=3600VF (m3 /h) where: F—the internal cross-sectional area of the duct (m 2)
Then: Q=3600 F /BdE (m3 /h)
For the same flowmeter d, F, and B are all fixed values, so the flow rate Q (or flow rate V) is proportional to the magnitude of the induced electromotive force E.
It can be seen that the induced electromotive force E is proportional to the flow rate Q (or the flow rate V). After processing and calculation, the instantaneous flow rate and the cumulative flow rate are measured.