On Hai Mailun electromagnetic flowmeter

Details MLDC an electromagnetic flowmeter, electromagnetic flowmeter overview consists of two parts electromagnetic flowmeter sensor and converter. It is based on the work of Faraday's law of electromagnetic induction, used to measure the conductivity is greater than 5μS / cm conductive liquid volumetric flow rate, is a measure of the volume flow of conductive medium for induction meter. In addition to measure the volume flow of conductive liquid, it can also be used to measure the volume of a homogeneous liquid-solid two-phase flow of a liquid suspension of acid and alkali and other strong corrosive liquids and slurries, pulp and paper pulp. Widely used in flow measurement of petroleum, chemical, metallurgy, textile, paper, environmental protection, food and other industrial and municipal administration, water conservancy construction, river dredging and other fields. Second, the electromagnetic flowmeter product features full digital processing, anti-interference ability, reliable measurement, high accuracy flow measurement range up to 150: 1 ultra-low EMI switching power supply for a wide range of supply voltage variation, anti-EMI performance. 16-bit embedded microprocessors, computing speed, high precision, programmable low-frequency square wave excitation frequency and improve the stability of the flow measurement, low power consumption. Using SMD devices and surface mount (SMT) technology, circuit reliability. No moving parts inside the pipe, unimpeded flow of parts, measuring almost no additional pressure loss. In the field online range according to the actual needs. Measurements and velocity distribution, the physical parameters of the fluid pressure, temperature, density, viscosity and the like. High-resolution backlit LCD display, full Chinese menu, easy to use, simple to operate, easy to understand. Has the RS485, RS232, Hart, and Modbus and other digital communication signal output. (Optional) with self-test and self-assertion. The cumulative amount of the cumulative amount of the forward and reverse totalizer difference between the total amount of hours recording function to record the total flow in units of hours for hourly metering system (optional) has three internal totalizer can be displayed separately Internal power-down features not always, can record 16 power-down times. (Optional) IR handheld operator, 115KHZ communication speed, long-distance non-contact operation of all functions of the converter (optional) Third, the technical parameters of electromagnetic flowmeter nominal diameter (mm) (special specifications can be customized) pipeline lining tetrafluoride : DN10 ~ DN1200 pipeline rubber lining: DN40 ~ DN1200 flow direction: positive and negative, the net flow turndown ratio: 150: 1 Repeatability error: ± 0.1% of measured value Accuracy: Pipeline: 0.5, 1.0 test medium temperature: ordinary rubber lining: -20 ~ + 60 ℃ high temperature rubber lining: -20 ~ + 90 ℃ PTFE lining: -30 ~ + 100 ℃ high temperature tetrafluoride lining: -20 ~ + 180 ℃ Rated working pressure: (high pressure Customizable) DN6-DN80: ≤1.6MPa DN100-DN250: ≤1.0MPa DN300-DN1200: ≤0.6MPa flow rate range: 0.1-15m / s Conductivity range: the measured fluid conductivity ≥5μs / cm Current output: Load Resistance 0 ~ 10mA: 0 ~ 1.5kΩ 4 ~ 20mA: 0 ~ 750 kΩ digital frequency output: Output frequency limit can be set with optical isolation within 1 ~ 5000HZ bidirectional transistor open collector output. External power supply is turned ≤35V maximum collector current of 250mA Power supply: AC220V, DC24V or 3.6V batteries require straight pipe length upstream ≥5DN, downstream ≥2DN connection: flange connection between each meter and piping, France Lan connection size shall comply with the provisions of GB11988 proof grade: mdIIBT4 Protection class: IP65, IP68 special order up to ambient temperature: -25 ~ + 60 ℃ Relative humidity: 5% to 95% of the total power consumption: less than 20W electromagnetic flowmeter liner Selection: The main performance lining material scope of neoprene Neoprene good wear resistance, excellent flexibility, high resistance to tearing force is generally low concentrations of acid salt medium corrosion, corrosion resistant to oxidizing media. <80 ° C, typically water, sewage, sludge, pulp Polyurethane Polyurethane has excellent wear resistance, acid and alkali resistance slightly worse. <60 ° C, neutral, strong wear pulp, coal slurry, mud. Teflon PTFE chemical properties of the most stable material, resistant to boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, concentrated alkali and various organic solvents, chlorine trifluoride intolerance, high temperature oxygen difluoride. <180 ° C, strong acids, alkalis and other corrosive media, health media category. F46 chemical stability, electrical insulation, lubrication, non-sticky and non-flammable and PTFE is similar, but the F46 material strength, aging resistance, heat resistance and low temperature flexibility than PTFE. Metal bonding performance, wear better than PTFE, has good tear resistance. <180 ° C, hydrochloric acid, sulfuric acid, aqua regia, and strong oxidizing agents, which are selected Hygiene dielectric electrode material: Material corrosion 316L for nitric acid, at room temperature <5% sulfuric acid boiling phosphoric acid, an alkali solution; in a certain pressure sulfurous acid, water, acetic acid and other media under strong corrosion resistance. HB-resistant Hastelloy boiling point of all the concentration of hydrochloric acid, sulfuric acid, hydrofluoric acids and other non-oxidizing acids, alkalis, non-chlorinated of hydrochloric acid. Hastelloy HC oxidation resistance acids such as: nitric acid, chromic acid and sulfuric acid mixture or a mixture of salt and oxidation resistance, water resistant titanium sea, a variety of chloride and hypochlorite, oxidizing acids (including fuming nitric acid) , corrosion, intolerance purer reducing acid (sulfuric acid, hydrochloric acid) corrosion organic acids, alkalis, etc., but as an acid containing an oxidizing agent (such as nitric acid and containing Fe, Cu ions medium) is greatly reduced when the corrosion. Tantalum has excellent corrosion resistance and is very similar to glass, in addition to hydrofluoric acid, concentrated sulfuric acid, the ability of almost all chemical media (including the boiling point of hydrochloric acid, nitric acid and sulfuric acid below 175 ° C) corrosion, corrosion in alkali impatience . Select the caliber electromagnetic flowmeter and flow, the nominal diameter (mm) measurable flow range (m3 / h) effective measurement flow range (m3 / h) Nominal Diameter (mm) measurable flow range (m3 / h) effective measurement Flow range (m3 / h) 10 0.0142 ~ 3.3912 0.0848 ~ 2.826 300 12.717 ~ 3052 76.302 ~ 2543 15 0.0318 ~ 7.6302 0.1908 ~ 6.3585 350 17.31 ~ 4154 103.86 ~ 3461 20 0.0566 ~ 13.5648 0.3392 ~ 11.304 400 22.61 ~ 5425 135.65 ~ 4521 25 21.195 17.6625 0.5298 ~ 0.0883 ~ 450 ~ 6867 28.62 171.68 0.1447 ~ ~ 572 232 500 35.33 29.9382 34.7258 0.8682 ~ ~ ~ 706 540 8478 211.95 54.2592 1.3565 0.2261 ~ ~ ~ 12 208 45.216 600 50.87 305.2 ~ 1,017,350 0.3533 ~ 2.1195 ~ 70.65 84.78 69.24 700 ~ 16616 ~ 1,384,765 415.4 143.28 3.5819 0.5970 ~ ~ ~ 21 703 119.39 800 90.44 542.6 ~ 1,808,680 0.9044 5.4259 ~ ~ 217.03 114.46 180.86 900 27 468 686.7 ~ ~ ~ 22,890,100 1.413 8.478 339.12 ~ 282.6 847.8 1000 141.3 ~ 33912 ~ 28,260,125 2.2079 ~ 13.2468 1200 529.87 441.56 203.5 ~ ~ ~ 40,694,150 488,331,221 19.0755 3.1793 ~ 763 ~ ~ 635.85 1,400,277 55,389,200 664,671,662 - 33.912 5.652 ~ 1356 1600 ~ 1130.4 361.8 ~ ~ 72,345,250 868,142,171 52.9875 8.8313 ~ 2119 ~ 17,661,800 457.9 ~ 109,874 2747 - 91562