The intelligent electromagnetic flowmeter consists of two parts: a sensor and a converter. It operates based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow of conductive liquids with conductivity greater than5μS/cm, making it an inductive instrument for measuring the volumetric flow of conductive media. In addition to measuring the volumetric flow of general conductive liquids, it can also be used to measure the volumetric flow of highly corrosive liquids such as strong acids and alkalis, as well as uniform liquid-solid two-phase suspensions such as slurry, ore pulp, and paper pulp. It is widely used for flow metering in industries such as petroleum, chemical, metallurgy, light textile, papermaking, environmental protection, and food, as well as in municipal administration, water conservancy construction, river dredging, and other fields.

II.Working Principle 

According to Faraday's principle of electromagnetic induction, a pair of detecting electrodes is installed on the pipe wall perpendicular to the axis of the measuring tube and the magnetic field lines. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic field lines and generates an induced electromotive force. This induced electromotive force is detected by the two detecting electrodes, and its value is directly proportional to the flow rate. Its value is:
   E=KBVD 
   Where:
   E– induced electromotive force;
   K– coefficient related to magnetic field distribution and axial length;
   B– magnetic induction intensity;
   V– average velocity of the conductive liquid;
   D– distance between electrodes; (inner diameter of the measuring tube)
   The sensor uses the induced electromotive forceEas the flow signal and transmits it to the converter. After amplification, conversion, filtering, and a series of digital processing steps, the instantaneous flow and cumulative flow are displayed on a backlit dot-matrix LCD. The converter has4～20mAoutput, alarm output, and frequency output, and is equipped with communication interfaces such asRS－485, and supportsHARTandMODBUSprotocols.

III.Instrument Features

Fully digital processing, strong anti-interference capability, reliable measurement, high accuracy, and a flow measurement range of up to150:1;
Ultra-lowEMIswitching power supply, suitable for a wide range of power supply voltage variations, with good resistance toEMI;
Adopts a16-bit embedded microprocessor with fast computing speed and high accuracy, and programmable frequency low-frequency rectangular wave excitation,  improving the stability of flow measurement with low power consumption;
UsesSMDcomponents and surface mount (SMT) technology for high circuit reliability;
No moving parts or flow-blocking components inside the pipeline, resulting in almost no additional pressure loss during measurement;
The measuring range can be modified online on site according to actual user requirements;
The measurement result is independent of physical parameters such as flow distribution, fluid pressure, temperature, density, and viscosity;
High-clarity backlitLCDdisplay, full Chinese menu operation, easy to use, simple to operate, and easy to learn and understand;
Provides digital communication signal outputs such asRS485,RS232,HartandModbus; (optional)

With self-check and self-diagnosis functions;
Hourly total recording function, recording the total flow by hour, suitable for time-of-use metering systems (optional);
Internally equipped with three totalizers, which can separately display forward total, reverse total, and differential total. It also has a power-failure-proof clock inside, capable of recording16power outage times. (optional);
 Infrared handheld operator,115KHZcommunication rate, remote non-contact operation of all converter functions (optional).

Since its establishment, Xi'an Shenghongchuang Instrument Co., Ltd. has been mainly engaged in the R&D and production of pressure, level, temperature, differential pressure, digital display, weighing, and flow instruments.Main products include Swissmetallux ceramic piezoresistive sensors, and self-developed ceramic capacitive pressure sensors. Diffused silicon, ceramic piezoresistive, strain gauge, metal capacitive, ceramic capacitive pressure transmitters, remote pressure transmitters, high-temperature pressure transmitters, flush diaphragm pressure transmitters, anti-corrosion pressure transmitters, integrated/split level transmitters, anti-corrosion level transmitters, lightning-proof level transmitters, high-temperature guided-pressure level transmitters, rigid rod level transmitters, flange level transmitters, air pressure transmitters, metal capacitive differential pressure transmitters, diffused silicon differential pressure transmitters, pressure controllers, thermocouples/RTDs, temperature transmitters, ultrasonic level gauges

Precautions 1.All supplied products are provided with a product certificate and instruction manual, including product number, technical parameters, wiring, ex-factory date, etc. Please check carefully to avoid misuse.2.Wiring must be carried out strictly in accordance with our company's instructions for use.3.This product is a precision instrument. Random disassembly, collision, dropping, or probing the sensor with sharp tools is prohibited.4.The transmitter can work immediately after power-on, but the output becomes stable after preheating for 30 minutes.5.If any abnormality is found during use, the power supply should be turned off, use should be stopped, and inspection should be carried out, or contact our company's technical department directly.6.During transportation and storage, restore the original packaging and store it in a cool, dry, and ventilated warehouse.7.The quality warranty period is 12 months (damage caused by improper use such as pressure overload and wiring errors is not covered by the quality warranty).8.Special products are customized products, do not participate in 7-day no-reason return, customization has a delivery period, no return and no exchange.