High Pressure Electromagnetic Flowmeter

High Pressure Electromagnetic Flowmeter

High Pressure Electromagnetic Flowmeter

1. Pipe diameter: DN6-DN2800
2. Type: remote type, integrated type, plug-in type
3. Lining material: neoprene, PTFE, PFA, FEP, F46
4. Electrode material: SS316L, HC, HB, Ti, Tan, Pt

1. Product overview

JYLDE series intelligent High pressure electromagnetic flowmeter is an inductive instrument that measures the volume flow of conductive medium in the pipe according to Faraday’s law of electromagnetic induction. It adopts single-chip embedded technology to realize digital excitation. While satisfying on-site display, the electromagnetic flowmeter can also output 4-20mA current signal, MODBUS, HART, pulse output, etc. for recording, adjustment and control, and has been widely used in chemical industry, environmental protection, metallurgy, medicine, papermaking , water supply and drainage and other industrial technology and management departments.

JYLDE series electromagnetic flowmeter can not only measure the flow of general conductive liquid, but also measure the volume flow of solid-liquid two-phase flow, high-viscosity liquid flow and salt, strong acid and strong alkali liquid.



DN450 electromagnetic flowmeter




2. Working principle

The measuring tube of the High pressure electromagnetic flowmeter is a short non-magnetic stainless steel tube lined with insulating material. Two electrodes pass through the pipe wall along the pipe diameter and are fixed on the measuring pipe. Its electrode head is basically flush with the inner surface of the lining. When the excitation coil is excited by a bidirectional square wave pulse, a working magnetic field with a magnetic flux density of B will be generated in the direction perpendicular to the axis of the measuring tube. At this time, if a fluid with a certain conductivity flows through the measuring tube, it will cut the magnetic force line and induce an electromotive force E. The electromotive force E is proportional to the product of the magnetic flux density B, the inner diameter of the measuring tube d and the average flow velocity V. The electromotive force E (flow signal) is detected by the electrode and sent to the converter through the cable. After the converter amplifies the flow signal, it can display the fluid flow, and can output pulse, analog current and other signals for flow control and regulation.

Note: E=KBdV

In the formula: E—is the signal voltage between electrodes (V)

B—Magnetic flux density (T)

d—Measuring tube inner diameter (m)

V—average flow velocity (m/s)


In the formula, K and d are constants. Since the excitation current is a constant current, B is also a constant. It can be known from E=KBdV that the volume flow Q is proportional to the signal voltage E, that is, the signal voltage E induced by the flow rate is proportional to the volume flow Q linear relationship. Therefore, the flow Q can be determined as long as E is measured. This is the basic working principle of electromagnetic flowmeter.

It can be seen from E=KBdV that parameters such as the temperature, pressure, conductivity of the measured fluid medium, and the liquid-solid composition ratio of the liquid-solid two-phase fluid medium will not affect the measurement results. As for the flow state, as long as it conforms to axisymmetric flow (such as laminar flow or turbulent flow), it will not affect the measurement results. Therefore, the electromagnetic flowmeter is a real volume flowmeter. For manufacturers and users, as long as they are actually calibrated with ordinary water, they can measure the volume flow of any other conductive fluid medium without any correction. nothing. There are no moving and blocking parts in the measuring tube, so there is almost no pressure loss, and it has high reliability.


3. Performance characteristics

1. The instrument has a simple and reliable structure, no moving parts, and a long working life.

2. There is no cut-off and flow blocking parts, so there is no pressure loss and fluid blockage.

3. No mechanical inertia, fast response and good stability, it can be applied to automatic detection and adjustment program control system.

4. The measurement accuracy is not affected by the type of the measured medium and its temperature, viscosity, pressure and other physical parameters.

5. Different combinations of PTFE or rubber lining and HC, HB, 316L, Ti, tantalum and other electrode materials can meet the needs of different media.

6. Full digital processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range up to 150:l.

7. Full Chinese or full English menu operation, easy to use and simple to operate.

8. High-definition backlit LCD display.

9. It has the functions of two-way flow measurement and two-way total accumulation. There are three totalizers inside which can respectively display the positive cumulative value, reverse cumulative value and difference cumulative value.

10. Output mode: current, frequency bidirectional output function and RS-485, MODBUS, HART interface.

11. Using SMD devices and surface mount (SMT) technology, the circuit has high reliability.


4. Machine and sensor technical data:

Nominal diameter6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800 (mm)
(Pipeline diameter of plug-in electromagnetic flowmeter is greater than or equal to DN100)
Maximum flow rate15m/s
Accuracy0.2%, 0.5%, 1.0% (the pipe diameter is larger than DN500, the normal accuracy is 1.0%, and it can be extended by 0.5%)
Fluid conductivity≥5uS/cm
Ambient temperatureSensor: -40℃~+80℃, Converter: -15℃~+60℃
lining materialPTFE, polyneoprene, polyurethane, perfluoroethylene propylene (F46)
Medium temperature≤180℃
Electrode material316L, Hastelloy C, Hastelloy B, Titanium, Tantalum, Platinum/Iridium Alloy, Stainless Steel Coated Tungsten Carbide
Body materialCarbon steel, 304 stainless steel, 316 stainless steel
Shell protectionIP65,IP67, IP68
Explosion-proof markExⅡBT6 Gb



1. Question: Can the high-pressure electromagnetic flowmeter withstand the pressure of 35mpa?

A: Of course, we have professional pressure testing equipment, and the high-pressure electromagnetic flowmeters we sell are widely used in oilfield units. Have mature production experience.

2. Question: What is the material of the high pressure flowmeter?

Answer: According to your needs, we can provide: carbon steel, 304 stainless steel, 316 stainless steel.

3. Q: Is the high pressure flowmeter expensive? Is the production cycle long?

A: We are a manufacturer, we have cash to purchase raw materials to reduce our cost, so the sales price is more favorable than the same industry, we have sufficient raw materials and short production cycle.

4. Q: How about the precision?

A: We have dedicated calibration engineers and professional calibration equipment. Before the flowmeter leaves the factory, the flow will be calibrated three times to ensure the accuracy of the flowmeter (accuracy: 0.5%, highest accuracy: 0.2%)

5. Q: How can we pay? What shipping methods do you offer?

A: We support: TT payment, credit card online payment, Western Union payment, LC payment. We can provide: By sea, by air, by express door to door.

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