HKLD series of intelligent electromagnetic flowmeter using the latest technology. Using constant frequency three-valued rectangular wave or square wave excitation frequency, both the advantages of square wave magnetic field, but also overcome the shortcomings of sinusoidal magnetic field; also can eliminate the power supply voltage fluctuations, power and excitation frequency caused by changes in coil impedance Error; and have excellent zero stability and noise impact from the fluid. Which has high stability, high reliability characteristics. Intelligent electromagnetic flowmeter measurement principle is based on Faraday's law of electromagnetic induction, intelligent sensors and electromagnetic flowmeter converter formed by a sensor installed in the measuring pipe, the converter can be connected with the sensor combination is called an electromagnetic flow meter body, Converter is installed within 30 meters away from the sensor, or 100 meters of the occasion, shielded cable connection between the two as separate from the electromagnetic flowmeter. Intelligent Electromagnetic Flowmeter main components are: measuring tube, electrode, excitation coil, core and yoke housing. Intelligent electromagnetic flowmeter for measuring the conductivity of closed conduits volume of liquid and slurry flow. Such as water, sewage, slurry, pulp, acids, alkalis, salt solution, slurry and other food products, intelligent electromagnetic flowmeter has been widely used in petroleum, chemical, metallurgical, textile, food, pharmaceutical and paper industry and environmental protection, municipal Management, water conservancy construction and other fields。