Liquid electromagnetic flowmeter

The liquid electromagnetic flowmeter is a fully intelligent flowmeter developed using technology, which has the characteristics of high measurement accuracy, high reliability, good stability, and long service life. In the process of product structure, material selection, manufacturing process, production assembly, and factory testing.

working principle

　　Liquid electromagnetic flowmeterAccording to Faraday's principle of electromagnetic induction, a pair of detection electrodes are installed on the tube wall where the axis of the measuring tube and the magnetic field lines are perpendicular to each other. When the conductive liquid moves along the axis of the measuring tube, it cuts the magnetic field lines and generates an induced potential, which is detected by the two detection electrodes on the measuring tube. The magnitude of induced electromotive force is U=KXBXVXD, and the physical quantities represented by each parameter in the formula are:

U: Induced electromotive force

K: Instrument constant

B: Magnetic induction intensity

V: Measure the average flow velocity within the cross-section of the measuring tube

D: Measure the inner diameter of the measuring tube

advantage

1. Measurement accuracy is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity

2. Measure the flow components inside the tube without pressure loss

　　3.Liquid electromagnetic flowmeterSimple structure, easy installation, and low requirements for straight pipe sections

4. No mechanical inertia, sensitive response, can measure instantaneous pulsating flow rate, and has good linearity

5. The sensor part only has the lining and electrodes in contact with the medium. As long as the electrode and lining materials are selected reasonably, they can be corrosion-resistant and wear-resistant, ensuring long-term use

6. Adopting a multi electrode structure, high precision, equipped with grounding electrodes, no need for grounding rings, saving costs

7. When power is turned off, EEPROM can save set parameters and accumulated flow values

8. The converter adopts low-power microcontroller data processing, with reliable performance, high accuracy, low power consumption, and stable zero point. Dot matrix LCD displays parameters such as cumulative flow rate, instantaneous flow rate, flow rate, and flow percentage

9. Bidirectional measurement system, capable of measuring both forward and reverse flow rates; Low frequency rectangular wave excitation improves flow stability, low power loss, and low flow velocity characteristics*
It can be widely applied in industrial sectors such as petroleum, chemical, metallurgical, water supply and drainage, steel, coal, papermaking, food, textile, environmental protection, as well as municipal management and water conservancy construction.