The flange type electromagnetic flowmeter is an electromagnetic induction flow meter composed of sensors and intelligent conversion parts. It can measure the volumetric flow rate of various conductive liquids, including acids, alkalis, salts, pulp, mud, wastewater, seawater, and solid-liquid two-phase liquids. This product is mainly used in industries such as petrochemicals, electricity, metallurgy, textiles, food, pharmaceuticals, papermaking, as well as in municipal environmental protection, water conservancy, and other fields.
manufacturer of flange type electromagnetic flowmeter
Nominal diameter: DN3mm～DN3000mm
Measurement accuracy: ± 0.5% of the displayed value, optional ± 0.3% or ± 0.2%
Protection level: IP65、IP68
Measurement range (flow rate): （0-15）m/s
Electromagnetic flow meters have a wide range of applications. They can not only be used for water supply and drainage measurement and measurement in urban and rural areas, but also for flow measurement and control in the production processes of industries such as petroleum, chemical, steel, metallurgy, mining, agricultural irrigation, sewage treatment, papermaking, medicine, and food; And it is applicable to the total measurement and trade settlement of conductive liquids.
Basic principle of flange electromagnetic flowmeter
Electromagnetic flowmeter is a flow measurement instrument made using Faraday’s electromagnetic induction principle.
The principle is that when a conductive liquid moves perpendicular to the magnetic field lines in an alternating magnetic field along the measuring pipeline, the conductive liquid cuts the magnetic field lines and generates an induced potential (voltage); At this point, a pair of electrodes were installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic field lines, which detected the induced potential (voltage) generated. This induced potential (voltage) is directly proportional to the flow rate of the liquid flowing through the measuring pipeline. By measuring this potential (voltage), the flow rate of the liquid passing through the measuring pipeline can be deduced.
From the above basic measurement principles, we can see that electromagnetic flowmeters can only be used for measuring conductive liquids, and non-conductive media cannot be measured, such as gases, oils, ketones, benzene, etc.
The flange type electromagnetic flowmeter is a flowmeter used for flow testing based on Faraday’s law of electromagnetic induction. The advantages of electromagnetic flowmeter are minimal pressure loss and a wide range of measurable flow rates. The ratio of larger flow rate to smaller flow rate is generally above 20:1, suitable for a wide range of industrial pipe diameters up to 3m. The output signal is linear with the measured flow rate, and can measure the flow rate of acid, alkali salt solutions, water, sewage, corrosive liquids, as well as fluids such as mud, slurry, and pulp with conductivity ≥ 20 μ s/cm.
The flange type electromagnetic flowmeter is widely used in the process flow measurement and control of production companies in industries such as petrochemicals, steel metallurgy, water supply and drainage, irrigation, water treatment, sewage treatment stations (environmental sewage control, chemical sewage, electroplating sewage), papermaking (pulp), mud, medicine, food, etc.
Technical parameters of flange electromagnetic flowmeter
| property | Technical parameter | ||
| Nominal diameter | DN3——DN3000mm | ||
| precision | ±0.5% of the indicated value, optional ±0.3% or ±0.2% of the indicated value | ||
| Lining material | Teflon,PFA,F46, Neoprene, polyurethane rubber, high temperature rubber | ||
| Electrode material | SUS316, Hastelloy B/C, Titanium, tantalum, platinum-iridium, stainless steel coated with tungsten carbide | ||
| Electrode form | Standard type, scraper type, can be changed | ||
| Connection mode | Flange connection, insert connection, clamp connection, clamp connection, connected by the nonans | ||
| Ambient humidity | 5 ~ 100%RH (relative humidity) | ||
| Dielectric conductivity | ≥20μs/cm | ||
| Measuring range | 1500:1 Flow rate setting <15m/s | ||
| Structural form | One type, sub-type, immersion type, explosion-proof type | ||
| Guard isopole | IP65、IP68 selectable | ||
| Explosion-proof mark | ExmdIIT 4 | ||
| Product standard | JB/T9248-2015 Electromagnetic flowmeter | ||
Advantages of flange type electromagnetic flowmeter
- 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;
- Can measure the flow rate of contaminated media, corrosive media, and suspended liquid-solid two-phase flow;
- During the measurement process, it is not affected by the temperature, viscosity, density, or conductivity (within a certain range) of the measured medium;
- 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);
- Electromagnetic flowmeter has no mechanical inertia, sensitive response, can measure instantaneous pulsating flow, and can also measure flow in both positive and negative directions;
- The range of caliber selection for industrial electromagnetic flow meters is wide.