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Electromagnetic flow meter
| ZRN-LDC electromagnetic flowmeter | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ZRN-LDC series magnetic flowmeter is Beijing zhongrui instrument technology limited company adopts advanced technology research and development of intelligent Electromagnetic Flowmeter, electromagnetic converter of Chinese core features a high-speed central processing unit, speed, high precision, reliable performance. Converter circuit design using international advanced technology, the input impedance up to 1015Ohm, cmrr 100dB, which can measure the lower conductivity of fluid flow. Its sensors magnetic structure with non-uniform magnetic field technology, the magnetic field is stable and reliable. Customers ' buy the rest assured that, with peace of mind, service satisfaction ' is our goal. The measuring principle is Faraday's law of electromagnetic induction sensor main components were: measuring tubes, electrodes, coil, the iron core and yoke shell. It is mainly used for measurement in closed conduits of conductive liquid and slurry in the volumetric flow rate. Including acid, alkali, salt and other corrosive liquids. Main production type electromagnetic flowmeter and shape electromagnetic flow meters are widely used in petroleum, chemical, metallurgy, textile, food, pharmaceutical, paper and other industries as well as environmental protection, municipal administration, water conservancy construction and other fields.  • Flow measurement is not affected by the density of the fluid, the viscosity, temperature, pressure and electrical conductivity effects of changes in rates, and average velocity sensor voltage signal linear, high measuring accuracy. • Measurement of pipe within the unimpeded flow, so there is no additional pressure loss; Measuring pipe has no moving parts, so very long sensor life. • Due to the inductive voltage signal is formed in the entire space filled with magnetic fields, is on pipe containing, on average, therefore the sensor of straight pipe is short, length 5 times times the pipe diameter. • Sensor only liner and electrode contact with the liquid to be measured, as long as the reasonable choice of electrode and lining materials, corrosion and abrasion. • ZRN-LDC converter using the latest most advanced microcontroller (MCU) and surface mount technology (SMT), reliable performance, high accuracy, low power consumption, zero point stability, convenient parameter setting. Click on the Chinese display LCD, displays the cumulative flow, flow, flow rate, flow percentages, and so on. ZRN-LDC electromagnetic flowmeter for measurement in closed conduits of conductive liquid and slurry volume, such as clean water, sewage water, acid, alkali and salt solutions, slurries, pulp, pulp and liquid food. • Bi-directional measuring system, measurable positive flows, the reverse flow. Using a special production process and quality materials to ensure product performance remains stable for a long time. Electromagnetic Flowmeter selection Selection of instruments is a very important instrument, the data indicate that, the instrument in actual application in 2/3 fault is the meter error selection or caused by wrong installation, please pay special attention to. Electromagnetic Flowmeter selection Instructions correctly is to ensure the use of the electromagnetic flowmeter Electromagnetic Flowmeter selection of prerequisites. Choose what kind of electromagnetic flow meter according to the measured fluid physical properties and chemical properties to determine, the size of Electromagnetic Flowmeter, flow rate range, lining materials, electrode materials and output currents, can adapt to nature and nature of the fluid to be measured and discharge requirements. Can measurement of fluid: by electromagnetic flowmeter of work principle known, can selection Electromagnetic Flowmeter measurement flow of fluid must is conductive of, strictly of said, except high temperature fluid zhiwai, as long as conductivity rate is greater than 5 μ/cm of any fluid are selection corresponding of electromagnetic flowmeter to measurement flow, so not conductive of gas, steam, oil class, acetone, material cannot selection Electromagnetic Flowmeter to measurement flow. Determine the diameter of the sensor: flow meter flow rate best in the context of 0.3-15m/s, diameter of the flowmeter can select pipe size consistent with the user. Instrument parts using the velocity falls below 0.3M/s the best local increase flow rate, use shrink tube: reducer cone angles less than 15oC, may be considered part of the straight pipe reducer. Type one or type separation option: type: live under better conditions, generally choose a body type, sensor and assembled into a whole.
• Data collection ① composition the biggest flow measured, ③ maximum working pressure minimum flow II maximum temperature, minimum temperature Electromagnetic flowmeters Q range should be greater than the estimated maximum flow of value and value slightly larger than normal flow flowmeter full scale scale 50%. Instrument selection • Measuring range to confirm Industrial magnetic flowmeter measured medium velocity 2~4m/s is appropriate, in exceptional circumstances, the minimum flow rate should be not less than 0.2m/s, the maximum should be not more than 8M/s. If the medium contains solid particles, flow rate should be less than 3M/s, to prevent excessive friction lining and electrode; For viscous fluids, flow rate can be selected is greater than 2m/s. Larger flow rates contribute to the automatic elimination of effects of electrodes attached to the sticky, helps to improve the measurement accuracy. Quantum Q defined conditions; According to the size of the velocity v-scope-meter-diameter d; The calculated value is determined by the following formula: Q=πD2V/ 4 Q: flow (㎡/h) d: pipe inside diameter v: velocity (m/h) Electromagnetic flowmeters Q range should be greater than the estimated maximum flow of value and value slightly larger than normal flow flowmeter full scale scale 50% The choice of installation place Selection of electrode materials:
Electromagnetic Flowmeter liner material options: Should be based on the measured medium corrosion, abrasion and temperature to select lining material.
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