According to Faraday's principle of electromagnetic induction, a pair of detection electrodes are installed on the tube 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, it cuts the magnetic field lines and generates an induced potential. This induced potential is detected by the two detection electrodes, and the value is proportional to the flow rate. Its value is

E=KBVD

In the formula:

E-induced potential;

K - Coefficient related to magnetic field distribution and axial length;

B-Magnetic induction intensity;

V-average flow velocity of conductive liquid;

D-electrode spacing; (Measuring the inner diameter of the tube)

The sensor uses the induced potential E as a flow signal, which is transmitted to the converter. After amplification, transformation, filtering, and a series of digital processing, the instantaneous and cumulative flow rates 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.

1. There are no movable parts or flow blocking components in the pipeline, and there is almost no additional pressure loss during measurement. The requirements for straight pipe sections are relatively low.

2. Low frequency square wave excitation, excitation frequency: 1/10 power frequency, 1/16 power frequency, 1/25 power frequency; High frequency square wave excitation, excitation frequency: 1/2 power frequency (suitable for slurry measurement) (optional); The excitation current can be selected as 125mA, 187.5mA, or 250mA;

3. The measurement results are independent of physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc.

4. On site, the range can be modified online according to the actual needs of the user.

5. High definition backlit LCD display makes reading easy under direct sunlight or in dark rooms. Full Chinese menu operation, easy to use, simple to operate, easy to learn and understand.

6. Fast computation speed, high accuracy, programmable low-frequency rectangular wave excitation, improved stability of flow measurement, and low power consumption.

7. All digital processing, strong anti-interference ability, reliable measurement, and high accuracy.

8. It has digital communication signal outputs such as RS485, RS232, Hart, and Modbus. (Optional) 9. The converter has functions such as self diagnostic alarm output, empty load detection alarm output, flow upper and lower limit alarm output, batch processing control, etc.

10. The high-pressure electromagnetic flowmeter sensor adopts PFA mesh lining technology, which is resistant to high pressure and negative pressure, and is specifically used in industries such as petroleum and chemical.

11. The sensor adopts advanced processing technology, which enables the instrument to have good anti negative pressure capability.

12. There are three internal integrators that can record the total amount: forward total amount, reverse total amount, and difference total amount.

13. Power off time recording function, automatically records the interruption time of the instrument system power supply, and compensates for the missed flow rate; Hourly total recording function, recording the total flow in hours, suitable for time-sharing measurement

System; Infrared handheld operation keyboard, remote non-contact operation converter for all functions.

14. Chinese and English display modes (customizable for other languages).