NYLD Intelligent Type Electromagnetic Flowmeter ,Flow Rate Range:0.1－10m/S,4-20mA,,IP68

NYLD Intelligent Eletromagnetic Flowmeter

The NYLD intelligent type electromagnetic flowmeter consists of a sensor and a converter. It is based on Faraday's law of electromagnetic induction, which is used to measure the volume flow of conductive liquid with conductivity greater than 5μs/cm. It is an inductive meter for measuring the volume flow of conductive medium. In addition to measuring the volume flow of general conductive liquid, it can also be used to measure the volume flow of strong corrosive liquids such as strong acid and alkali and uniform liquid-solid two-phase suspension liquid such as slurry, pulp and paper pulp. It is wdely used for flow measurement of petroleum, chemical, metallurgy, textile, papermaking, environmental protection, food and other industrial sectors and municipal management, water conservancy construction, rivers and other fields.

NYLD Intelligent Eletromagnetic Flowmeter Technical Parameters

Electromagnetic sensors general specification

NYLD Intelligent Eletromagnetic Flowmeter Operating Principle

According to the principle of Faradayelectromagnetic induction, a pair of detecting electrodes are mountedon the wall of the pipe perpendicular to the axis of the measuring pipe and the magnetic line of force.Whenthe conductive liquid moves along the axis of the measuring pipe, theconductive liquid cuts the magnetic line of force to generate an induced potential.The induced potential is detected by the two detection electrodes and the value is proportional to the flow rate.Thevalue is:

E=KBVD Where: E- induced potential;
K-thefactor related to the magnetic field distribution and the axial length;
B-magnetic induction intensity;
V-conductive liquid average flow rate;
D-electrode spacing; (measure inner diameter of the pipe)

The sensor transmits the induced potential Eas a flow signal to the converter.After a series of digital processing such as amplification and conversion filtering, the instantaneous flow rate and the accumulated flow rate are displayed by the dot matrix liquid crystal with backlight.The converter has4-20mA output, alarm output and frequency output, and has RS-485 communication interface, and supports HARTand MODBUS
protocols.

NYLD Intelligent Eletromagnetic Flowmeter Design Features

■ Full digital processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range can reach 150:1;
■ Ultra-low EMIswitching power supply, large voltage range of suitable power supply, goodanti-EMI performance;
■Use 16-bitembedded microprocessor, with fast operation speed, high precision, and programmable low-frequency rectangular wave excitation,improving the stability of flow measurement and low power consumption;
■ Use SMD parts and surface mount (SMT) technology, high circuit reliability;
■ No moving parts in the pipe, no flow blocking parts, and there is almost no additional pressure loss in the measurement;
■ Itcan modify the range online on site according to the actual needs of users;
■The measurement results are independent of the physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity;
■ High-definition backlit LCDdisplay, fullChinese menuoperation, easy to use, easy to operate, easy to learn and understand;
■ Withdigital communication signal output such as RS485, RS232, Hartand Modbus (optional);
■ With self-test and self-diagnosis function;
■ With hourly total recording function, recording the total amount of flow in hours, suitable for time-sharing measurement (optional);
■Thereare three Integrators, which can display the forward accumulation amount ,the reverse accumulation amount and the difference calculation amount respectively..There is an internal power-down clock, which can record 16 power-down times. (optional);

■ With infrared handheld operator, 115KHZcommunication rate, it can operate all functions of converter remotely without contact (optional).

NYLD Intelligent Eletromagnetic Flowmeter Composition and Structure

The electromagnetic flowmeter consists of the following components:

The electromagnetic flowmeter mainly consists of a sensor a nd a converter. The sensor includes a flange, a lining, an electrode, a measuring pipe, an excitation coil, a sensor housing and so on; the converter includes
1. Converter: provides a stable excitation current for the sensor, at the same time, converts the induced electromotive force obtained by the sensor into a standard electrical signal, and displays real-time flow and parameters for display, control and adjustment of the flow.
2. Lining: a complete layer of electrically insulating corrosion-resistant material on the inside of the measuring pipe and on the flange sealing surface.
3. Electrode: a pair of electrodes mounted on the wall of the measuring pipe to detect the flow signal, and another 1-2 grounding electrodes mounted for the grounding and anti-interference of the flow signal measurement.

NYLD Intelligent Eletromagnetic Flowmeter Instrument Classification

1. According to the instrument structure, the vortex flowmeter can be divided into three categories, namely:

① No resistance parts in the measuring pipe, no pressure loss.

② With simple structure, the electromagnetic flowmeter measuring pipe can use different lining according to

different qualifications, and the reliability is high.

■ Separate type electromagnetic flowmeter

The converter and the main body are installed separately, which is convenient for centralized installation and easy to read data.

■ Plug-in type electromagnetic flowmeter

It is widely applicable to the flow measurement of large caliber conductive liquid medium in various industries.

①Wide nominal diameter range, suitable for all caliber pipes between DN150~DN3000.

②The sensor uses novel excitation mode, low power consumption, stable zero point and high precision. The flow range can reach 1500:1

NYLD Intelligent Eletromagnetic Flowmeter Selection