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 than 5μS/cm, and is 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 strong alkalis, as well as uniform liquid-solid two-phase suspended liquids such as slurry, ore slurry, and pulp. It is widely used in petroleum, chemical, metallurgy, light textile, papermaking, environmental protection, food and other industrial sectors, as well as in municipal management, water conservancy construction, river dredging and other fields for flow metering.

II,Working Principle 

According to the principle of Faraday electromagnetic induction, a pair of detection 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 two detection 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 conductive liquid;
   D－distance between electrodes; (inner diameter of the measuring tube)
   The sensor uses the induced electromotive force E as the flow signal and transmits it to the converter. After amplification, conversion, filtering, and a series of digital processing, the instantaneous flow and accumulated flow are displayed on a backlit dot-matrix LCD. The converter has 4～20mA output, alarm output, and frequency output, and is equipped with communication interfaces such as RS－485, and supports HART and MODBUS protocols.

III,Instrument Features

Full digital quantity processing, strong anti-interference capability, reliable measurement, high accuracy, and the flow measurement range can reach 150:1;
Ultra-low EMI switching power supply, suitable for a wide range of power supply voltage variations, with good anti-EMI performance;
Using a 16-bit embedded microprocessor, with fast computing speed and high accuracy, programmable frequency low-frequency rectangular wave excitation,  improving the stability of flow measurement and reducing power consumption;
Using SMD components and surface mount (SMT) technology, with high circuit reliability;
No moving parts in the pipeline, no flow-blocking parts, and almost no additional pressure loss during measurement;
The range can be modified online on site according to the user's actual needs;
The measurement result is unrelated to physical parameters such as flow velocity distribution, fluid pressure, temperature, density, and viscosity;
High-definition backlit LCD display, full Chinese menu operation, convenient to use, simple to operate, easy to learn and understand;
With digital communication signal outputs such as RS485, RS232, Hart and Modbus; (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 integrators, which can respectively display forward cumulative quantity, reverse cumulative quantity, and differential cumulative quantity, and internally equipped with a power-fail clock, which can record 16 power-off times. (optional);
 Infrared handheld operator, 115KHZ communication rate, remote non-contact operation of all functions of the converter (optional).

Since its establishment, Xi'an Shenghongchuang Instrument Co., Ltd. has mainly been engaged in the R&D and production of pressure, level, temperature, differential pressure, digital display, weighing, and flow instruments.Main products, Swissmetallux ceramic piezoresistive sensors, 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 liquid 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 meters

Precautions 1.All supplied products are provided with product certificates and instructions, including product number, technical parameters, wiring, factory date, etc. Please carefully check them to avoid misuse.2.Wiring should 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 poking the sensor with sharp tools is prohibited.4.The transmitter can work immediately after power-on, but the output will be stable after 30 minutes of preheating.5.If any abnormality is found during use, the power supply should be turned off, use should be stopped, 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 guarantee period is 12 months (damage caused by improper use such as pressure overload and wiring errors is not covered by the quality guarantee).8.Special products are customized products and do not participate in the 7-day no-reason return policy. Customized products have a delivery period and are non-returnable and non-exchangeable.