Working principle and characteristics of electromagnetic flowmeter

Electromagnetic flowmeter is a flowmeter for flow measurement according to Faraday's basic law of electromagnetic induction.The advantage of electromagnetic flowmeter is that the pressure loss is small, can measure the flow range is large.

Large flow and the minimum flow rate of the general part, in the industrial production of available pipe by the scope wide, large, to 3 m output data signal and the measured flow into linear, high precision, measurable electrical conductivity of 5 mu s/cm or more acid, alkali, salt solution, water, waste water, corrosive liquid and its mortar, pulp, pulp flow of fluid mechanics, etc.But it can not measure the flow of steam, steam and its mineral water.

 

When the electric conductor in the magnetic field for cutting the magnetic field line fitness exercise, in the conductor will cause the induction potential, the size of the induction potential and the reasonable length of the electric conductor in the magnetic field and the electric conductor in the magnetic field perpendicular to the magnetic field direction motion rate is proportional to.Similarly, when conducting fluid dynamics flows vertically in a magnetic field and a laser cuts a magnetic induction line, it also creates an induced potential at the level on either side of the line.

Working principle and characteristics of electromagnetic flowmeter

Electromagnetic flowmeter characteristics

 

1. The measurement will not be affected by changes in fluid density, viscosity, temperature, pressure and conductivity;

 

2. There is no blocking flow member in the measuring pipe, no pressure loss, and the connection section is relatively low.It has unique adaptability to slurry measurement.

 

3. Reasonable selection of sensor lining and metal electrode, that is, excellent corrosion resistance and wear resistance;

 

4, the converter USES novel excitation method, low power, zero point stability, high accuracy.The traffic category reaches 150:1;

 

5. The converter can be integrated with or separated from the sensor;

 

6. The converter adopts 16-bit performance microprocessor, 2x16LCD display, easy to set main parameters, reliable programming;

 

7. The flowmeter is the software of the dual measurement system, with three integrators in the inner window: the total amount in the forward direction, the total amount in the reverse direction and the total amount of error;It can display positive and negative flow of information, and has a variety of outputs: current, pulse, digital communication, HART;

 

8. The converter adopts surface mount technology (SMT), with self-test and self-diagnosis functions;

 

9. The measurement precision will not be harmed by the change of fluid density, viscosity, temperature, working pressure and conductivity, and the working voltage signal induced by the sensor has a linear relationship with the mean water flow, so the measurement precision is high.

 

10. Measure the free-flowing parts in the pipeline, so there is no additional working pressure damage;The sensor has a long life because the components cannot be moved in the measuring pipe.

 

11. Because the induced voltage data signal is generated in the indoor space filled with magnetic field and is the mean value of the carrying surface of the pipeline, the connection section required by the controller is short, and the length is 5 times the diameter of the pipeline.

 

12. The converter is designed by MCU and SMT, with reliable characteristics, high precision, low power, stable zero point and convenient main parameters.Click Chinese display information LCD, display accumulated flow, instantaneous flow, flow rate, flow percentage, etc.

 

13. Dual measurement system can measure forward flow and reverse flow.The unique production process and high quality raw materials are adopted to ensure that the characteristics of the products can be maintained for a long time.

 

Porcelain city flowmeter after hundreds of working medium, the service life of more than 8 years, and without secondary calibration, since it was founded, the porcelain city instrument is determined to do the world first-rate flowmeter, breaking the monopoly of the industry, international brand in the flowmeter to customers in the domestic can buy real German quality domestic flow meter.

Last：Electromagnetic flowmeter signal Next：Defect of electromagnetic flowm..