We are very careful in every detail from the ceramic lined electromagnetic flowmeter sensor to the converter. We strictly control every link from design, material selection, process, production, testing, etc., to ensure the long-term quality of the product. Ceramic lined electromagnetic flowmeter has several advantages, including high temperature resistance, corrosion resistance, and beautiful appearance, and is suitable for special working conditions.

The difference between ceramic lined electromagnetic flow meters and general flow meters is that ceramic materials are used as liners, which can solve problems that traditional flow meters cannot solve, such as high temperature resistance, smooth inner surface, low retention of debris, and easy disinfection. The ceramic lined electromagnetic flowmeter has no movable parts inside, and the inner wall is relatively smooth, making it convenient to use steam for cleaning and disinfection, thus achieving safety and hygiene, and no bacterial residue.

Working principle of electromagnetic flow in ceramic lining

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.

Nominal diameter	DN25–DN350mm
Nominal pressure	1.0-1.6Mpa
precision	±0.5% of the indicated value, optional ±0.3% or ±0.2% of the indicated value
Lining material	Zirconium dioxide
Electrode material	Titanium diboride
Ground ring	SUS316, Hastelloy, titanium
介质电导率	≥20μs/cm
Fluid temperature	-20℃～180℃
Supply voltage	AC100～240V，DC12～36V

Advantages of ceramic lined electromagnetic flowmeter

1. The structure of the electromagnetic flowmeter sensor is simple, with no movable parts inside the measuring tube and no throttling components that hinder fluid flow;
2. Can measure the flow rate of contaminated media, corrosive media, and suspended liquid-solid two-phase flow;
3. During the measurement process, it is not affected by the temperature, viscosity, density, or conductivity (within a certain range) of the measured medium;
4. The output of an electromagnetic flowmeter is only proportional to the average flow velocity of the measured medium, and is independent of the flow state under symmetric distribution (laminar or turbulent);
5. Electromagnetic flowmeter has no mechanical inertia, sensitive response, can measure instantaneous pulsating flow, and can also measure flow in both positive and negative directions;
6. The range of caliber selection for industrial electromagnetic flow meters is wide.