Zhejiang, Jiangsu and Shanghai factory direct custom processing intelligent electromagnetic flowmeter

About electromagnetic flowmeter electromagnetic flowmeter measurement principle is based on Faraday's law of electromagnetic induction. Measuring tube flowmeter is a non-magnetic metal lined insulating material spool. Two electrode wear through the wall of the pipe diameter direction is fixed on the measuring tube. When the coil is excited, it will produce a magnetic flux density in a direction perpendicular to the axis of the measuring tube a magnetic field B of the work. At this time, if the fluid flowing through the measuring tube has a certain electrical conductivity, the cutting magnetic lines induced electromotive force E. Electromotive force E is proportional to the magnetic flux density B, measuring tube diameter d and average velocity v of the product, the electromotive force E (traffic signal) is detected by the electrodes and sent through the cable converter. After the flow transducer signal amplification processing, fluid flow can be displayed, and the output pulse energy, and other analog current signal for controlling and adjusting the flow rate. E = KBDV Where: E-- signal voltage (v) between the electrodes B-- flux density (T) d-- measuring tube diameter (m) V-- average velocity (m / s) 2 Scope of electromagnetic Flowmeter Products can be widely used in chemical, iron and steel, coal, mining, oil exploration, petrochemicals, papermaking, environmental protection, sugar, pharmaceutical, food, irrigation, drainage and port dredging and other fields, can accurately measure a variety of acid , alkali, salt solution, raw water, cooling water, sewage, coal slurry, pulp, mud, water, mud, pulp, syrup, coal water slurry, corn syrup, fiber pulp, grain syrup, lime, hydrogen peroxide, beer, wort, black liquor, green liquor and a variety of beverages such as conductive liquid and solid-liquid two-phase body fluid volume flow. Domestic production of electromagnetic flowmeter has a body and a separate type two kinds of combinations of patterns. A wide range of electromagnetic flowmeters applications. Large-diameter instrument more applied to the drainage works, small caliber used in solid-liquid two-fluid or demanding equal unpredictable places, such as measuring the pulp and paper industry pulp and black liquor, non-ferrous metallurgy industry, coal preparation plant coal slurry, highly corrosive liquids, and chemical industry steel industry blast furnace cooling water control and monitoring of air leakage, flow of long-distance pipeline hydraulic transportation of coal measurement and control. Small-caliber, small caliber used in the pharmaceutical industry, food industry, bio-engineering and other places have health requirements. 3 Technical features programmable low-frequency square wave excitation frequency and improve the stability of flow measurement, low power loss;??? 16-bit embedded microprocessors, fast speed, high precision;? All-digital processing, anti-interference ability Strong, reliable measurement, high accuracy flow measurement range of up to 1500: 1; ultra-low EMI switching power supply for power supply voltage range, good anti EMC performance; full Chinese menu is simple, easy to use, operate, easy to learn?? easy to understand;? High-resolution backlit LCD display;? having bi-directional flow measurement, the total two-way cumulative function, current, frequency, with two-way output;? interior has three totalizer displays were positive cumulative amount, Accumulated reverse the amount and the difference between the volume totalizer;? having RS485 or RS232 digital communications signal output has a conductivity measurement function, can determine whether the sensor ATC;?? large constant excitation current ranges with different companies, different types of electromagnetic flow sensor supporting the use of;? with self-test and self-diagnostic function;? using SMD devices and surface mount (SMT) technology, circuit reliability;? interior design of the instrument does not power down the clock, can record 16 power-down time. ? 4 main technical parameters ◆ meter accuracy: Pipeline 0.3, 0.5, 1.0; Plug-in 2.5 ◆ Measuring medium: conductivity is greater than 5μS / various liquids and liquid-solid two-phase flow in cm. ◆ flow rate range: 0.2 ~ 12m / s ◆ Working pressure: 0.25MPa ~ 16MPa ◆ Ambient temperature: -40 ℃ ~ + 50 ℃ ◆ Medium temperature: ≤180 ℃ teflon-lined rubber material lining ≤65 ℃ ◆ Explosion-proof mark: Ex dⅡBT4 ◆ external magnetic interference: ≤400A / m ◆ shell protection: Integrated type: IP65 ;? Separate: Sensor IP68 (5 meters underwater, only rubber lining) converter IP65 ◆ Output signal: 4 ~ 20mA.DC load resistance 0 ~ 750Ω ◆ communication output: RS485 or CAN bus ◆ Electrical connection: M20 × 1.5 thread, φ10 cable hole ◆ Power supply voltage: 90 ~ 220V.AC, 24 ± 10% V.DC ◆ Maximum power consumption: ≤ 10VA 5? installation specifications? should be away from strong magnetic equipment. ? Avoid strong vibration, corrosive places. ? Technology does not allow traffic interruption of the pipeline, the installation should be located in Canada meter shut-off valve and the bypass line. ? Flowmeter upstream sensor also should have some straight sections, generally 5D ~ 10D. ? Can be horizontal, vertical and inclined mounting, but to ensure that the measuring tube and pipe coaxial technology, and to ensure that the measuring tube is always filled with liquid. ? Measuring tube of the sensor housing, the lead wire shield, and both ends of the sensor conduit must be grounded, the ground must not be shared with other electrical equipment, which is the special installation of electromagnetic flowmeters. Integrated electromagnetic flowmeter