Intelligent Electromagnetic Flowmeter

Intelligent Electromagnetic Flow Meter

The electromagnetic converter core of an intelligent electromagnetic flowmeter uses a high-speed central processing unit. The calculation speed is fast, the precision is high, and the measurement performance is reliable. The input impedance of the converter circuit is up to 1015 ohms, the common mode rejection ratio is better than 100db, the rejection ability of external interference and 60Hz/50Hz interference is better than 90db, and the flow rate of the fluid medium with low conductivity can be measured. The sensor adopts non-uniform magnetic field technology and a special magnetic circuit structure. Stable and reliable magnetic field, reduced repetition, reduced flowmeter volume, flow friendly.

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Product Description

Characteristics

● Lining material, electrode material optional
● Multiple calibers (DN10-DN1200)
● Acid, alkali, salt liquid measurement
● Pulse, 4-20mA, RS 485 output
● Integrated, plug-in, split type optional

Specification

The measuring principle of the electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. The measuring tube of the flowmeter is a short non-magnetic alloy tube lined with insulating material. Three electrodes are fixed to the measuring tube along the diameter direction through the tube wall. The electrode head is essentially flush with the inner surface of the lining. When the excitation coil is excited by two wave pulses, a working magnetic field with a flux density of B is generated in the direction perpendicular to the axis of the measuring tube. At this point, if the conductivity of the fluid passes through the measurement tube. The electromotive force E is created by cutting the field lines. The electromotive force E is proportional to the magnetic flux density B and measures the product of the tube diameter d and the average velocity v. E(flow signal) is detected by the electrode and sent to the converter through the cable. After the converter amplifies the flow signal, it can display the flow, and output signals such as pulse and analog current for flow control and regulation.