ORBLDBE intelligent electromagnetic flowmeter 
 First, an overview 
 Intelligent electromagnetic flowmeter measurement principle is based on Faraday's law of electromagnetic induction. Flowmeter tube is a short tube lined with insulating material non-magnetic alloy. The two electrode extension diameter direction penetrating the wall on the measuring tube. The electrode head and the lining inner surface of the basic flush. Bi-directional square wave pulse excitation, the excitation coil, in the measuring tube axis is perpendicular to the direction of the magnetic field of a magnetic flux density B. At this point, a certain electrical conductivity of the fluid flowing through the measuring tube, cutting magnetic lines induced electromotive force E Emf E is proportional to the magnetic flux density B, measure the tube diameter d and the average velocity v of the product. Electromotive force E (traffic signal) is detected by the electrodes and sent through the cable converter. Converter traffic signal amplification process, you can display the fluid flow, and the output pulse, the analog current signal, for traffic control and regulation. 
 Electromagnetic flowmeter has its unique advantages, it is widely used in chemical fiber, food, paper, sugar, mining and metallurgy, water supply and drainage, environmental protection, water hydraulic, steel, petroleum, pharmaceutical and other industrial sectors, with to measure a variety of acid-chien, the salt solution, slurry, pulp, pulp, coal water slurry, corn syrup, fiber pulp, grain, pulp, milk of lime, sewage, cooling the raw water to the drainage, saline, hydrogen peroxide, beer, wort, the kind of beverage, black liquor, green liquor, the volume flow of conductive liquid medium. 
 Intelligent electromagnetic flowmeter Features 
 No moving parts in the pipeline, the unimpeded flow of parts, measuring almost no additional pressure loss. 
 Measurements and flow velocity distribution of fluid pressure, temperature, density, viscosity and other physical parameters. 
 At the scene, according to the actual needs of users online modify range. 
 High-definition, backlit LCD display, the operation of the whole Chinese menu, easy to use, simple operation, easy to learn. 
 SMD devices and surface mount (SMT) technology, circuits and high reliability. 
 16-bit embedded microprocessors, computing speed, high precision, programmable frequency low-frequency rectangular wave excitation, improve the stability of the flow measurement, low power consumption. 
 Full-digital processing, anti-interference ability, reliable measurement, high accuracy flow measurement range up to 150: 1. Ultra-low EMI switching power supply, apply to the supply voltage range, anti-EMI performance. 
 The internal three totalizer display positive cumulative volume and the difference totalizer with internal power-down clock, and can record 16 power-down time. (Optional) 
 RS485, RS232, Hart, and Modbus digital communications signal output. (Optional) 
 With self-test, and self-assertion. 
 Infrared hand-held operation, the 115KHZ communication speed, long-distance non-contact operation of all functions of the converter. (Optional) 
 Hours of total recording function, record the flow total for hourly metering system in hours. (Optional) 
 Third, intelligent electromagnetic flowmeter main technical parameters 
 Intelligent electromagnetic flow meter nominal diameter range DN (mm) 
 PTFE lined pipeline: 10, 15, 20, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600. Ducted rubber lining: 40, 50, 65, 80, 100, 125, 150, 200, 300, 350, 400, 500, 600, 800, 1000, 1200. 
 Flow direction: positive and negative net flows. Range: 150: 1. Repeatability error: measured value ± 0. 1% 
 Intelligent electromagnetic flow meter accurate rating: 0.5, 1.0 (pipeline) 
 The measured medium temperature: the ordinary rubber lining: -20 to +60 ° C 
 High-temperature rubber lining: -20 ~ +90 ℃ 
 PTFE lining: -30 to +100 ° C 
 High temperature PTFE lining: -30 ~ +180 ℃. 
 Rated working pressure of intelligent electromagnetic flowmeter: pipeline: the DN6 ~~ DN80 ≤ 1.6Mpa, DN100 ~ DN250 ≤ 1.0Mpa 
 DN300 ~ DN1200 ≤ 0.6Mpa. 
 Intelligent electromagnetic flow meter flow measurement range: flow measurement range corresponds to a velocity range of 0.1 ~ 15m / s, 
 Conductivity range: the measured fluid conductivity the ≥ 5us/cm (one), most of the water composition of the medium, the conductivity in the 200 ~ 800 of μ s / cm can be selected electromagnetic flow meter to measure its traffic. 
 Current output: 0 ~ 10mA load resistance 0 ~ 1.5k Ω,; 4 ~ 20 mA, the load resistance 0 to 750k Ω, 
 Digital frequency output: the output frequency upper limit can be set within 1 ~ 5000Hz with optical isolation of the transistor collector open two-way output. External power supply ≤ 35V turns on when the collector current of 250mA. 
 Intelligent electromagnetic flow meter power supply: 85 ~ 265V, 45 ~ 63Hz. 
 Length of straight pipe: pipes: upstream ≥ 5DN, downstream ≥ 2DN. 
 The connection between the way: the flow meter and piping flange connection, flange connection size shall comply with the provisions of GB11988. 
 Intelligent electromagnetic flowmeter proof mark: mdIIBT4. 
 Intelligent electromagnetic flow meter ambient temperature: -25 ~ 60 ° C 
 Intelligent electromagnetic flow meter Relative humidity: 5% ~ 95% 
 Intelligent electromagnetic flow meter total power consumption: less than 20 watts.