High voltage electromagnetic flowmeter| Alibaba ultrasonic flowmeter manufacturer

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1. Main technical parameters of high-voltage electromagnetic flowmeter

Execution standard: JB/T9248-2000 electromagnetic flowmeter · nominal diameter series DN: (mm) PTFE lining: 5,10,15,20,25,32,40... 1200 rubber lining: 10,15,20,25,32,40,50,65,8010125150250300350... 2000 Note: Special specifications can be customized · Beijing electromagnetic flowmeter accuracy level: 0.5 level, 1.0 level · Working temperature: chloroprene rubber lining: -20~+60 ℃; Polyurethane lined sail rubber god: -20~+90 ℃ PTFE lining: -30~+180 ℃ · Working pressure: DN10- DN65: 2.5Mpa DN80- DN150: 1.6Mpa DN200- DN1600: 1.0Mpa · Flow measurement range: Flow measurement range corresponds to a flow rate range of 0.5~10m/s · Conductivity: Conductivity greater than 20 μ m; S/cm · Output signal and load resistance: 0-10mADC, 0-1000 Ω; 0-1000Hz; not less than 10K Ω 0/4-20mADC, 0-500 Ω; 1-5V, 0-5V, not less than 10K Ω · Electrode material: 316 stainless steel · Protection level: IP6

5. IP68 · Power supply: 220VAC ± 10%, 50Hz ± 5% 24VDC ± 10% · Straight pipe length: upstream ≥ 5DN, downstream ≥ 3DN · Connection method: The flowmeter is connected to the stool pipe with a flange connection size in accordance with GB9119-88 · Environmental temperature: -25 ℃~+45 ℃ · Relative humidity: 5%~95%<2. What is a high-pressure electromagnetic flowmeter?

Electromagnetic flowmeter is a flowmeter that measures flow based on Faradays law of electromagnetic induction.. The advantages of electromagnetic flowmeter are minimal pressure loss and a wide range of measurable flow rates. The ratio of high flow rate to low flow rate is generally above 20:1, suitable for a wide range of industrial pipe diameters, up to 3m after the stove is disassembled.

The output signal is linear with the measured flow rate, with high accuracy. It can measure the fluid flow rate of acids, alkalis, salt solutions, water, sewage, corrosive liquids, as well as mud, slurry, pulp, etc. with conductivity ≥ 5 μ s/cm. But it cannot measure the flow of gas, steam, and purified water. When a conductor cuts magnetic field lines in a magnetic field, an induced potential is generated in the conductor, and the magnitude of the induced potential is proportional to the effective length of the conductor in the magnetic field and the speed at which the conductor moves perpendicular to the direction of the magnetic field. Similarly, when a conductive fluid flows vertically in a magnetic field and cuts magnetic induction lines, it will also generate induced potentials on the electrodes on both sides of the pipeline. The direction of the induced potential is determined by the right-hand rule, and the magnitude of the induced potential is determined by the following equation: Ex=BDv -- -- -- -- -- -- -- -- -- Equation

(1). In the formula, Ex - induced potential, V; B - magnetic induction intensity, TD - inner diameter of the pipeline, mv - average flow velocity of the liquid, m/s。 However, the volumetric flow rate qv is equal to the product of the fluid velocity v and the pipeline cross-sectional area (π D)/4. Substituting equation

(1) into this equation yields: Qv=(π D/4B) * Ex - - - - - - - Equation

(2). As can be seen from the above equation, when the diameter D of the pipeline is fixed and the magnetic induction intensity B remains constant, the measured volume flow rate is linearly related to the induced potential. If an electrode is inserted on each side of the pipeline, an induced

High voltage electromagnetic flowmeter

1. Main technical parameters of high-voltage electromagnetic flowmeter

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