Sanitary clamp type electromagnetic flowmeter meet live shows also can output 4 ~ 20mA current signal for recording, regulation and control, has been widely used in chemical industry, environmental protection, metallurgy, pharmaceutical, paper, water supply and drainage industrial technology and management. ????? Using electromagnetic induction principle to measure the flow rate of the fluid medium electromagnetic flowmeter. It added to a magnetic field on both sides of the pipe, the measured medium flowing through the pipeline will cut the magnetic field lines, generating EMF on two sensing electrodes, and its size is proportional to the velocity of the fluid. Can be used to measure the acid, alkali, salt solution, slurry, slurry, mortar, plaster, paper pulp, resins, rubber latex, synthetic fiber pulp and photographic emulsion and other suspended solids, gasification and steam flow viscous substances. Electromagnetic Flowmeter good sealing performance, but also for water and sewer systems. ????? Measurement process and not in contact with the fluid, suitable for pharmaceutical, biochemical and food industries. This meter can also detect blood flow. It turndown ratio of about 100: 1, typically at 1% precision, since such sensors must be maintained in the pipe resistance and a certain proportional relationship between the measured impedance of the circuit, so there are certain difficulties in manufacturing. When the conductivity measured media is about 10 ohm-cm began to create difficulties, difficulty arises when the principle of lower conductivity. When the conductivity of 10 ohm · cm, reached "boundary" between the conductive medium and the dielectric, and a significant increase in thermal noise level with the increase of internal resistance. ?? Features 1, no moving parts inside the pipe, unimpeded flow of parts, measuring almost no additional pressure loss. 2, measurements and velocity distribution, the physical parameters of fluid pressure, temperature, density, viscosity and the like. ? ???? 3, in the field can be modified online scale according to the actual needs. ?? How it works: Working principle of electromagnetic flow meter is based on Faraday's law of electromagnetic induction. In the electromagnetic flowmeter, the conductive medium in the measuring tube is equivalent method? Faraday trials conductive metallic rod, two upper and lower ends of the electromagnetic coil generates a constant magnetic field. When a conductive medium flowing, the induced voltage is generated. Two electrodes inside the pipe induced voltage measurements generated. Measuring pipe through a non-conductive lining (rubber, Teflon, etc.) with the fluid and the measuring electrodes to achieve electromagnetic isolation. ? Structure and purpose: meter by one unit and the secondary device component, in the form of a combination of press equipment and the secondary device can be divided into sub-meter body and a body; flowmeter for measuring the volume flow of conductive liquid. (Excerpt:?? JJG 1033-2007 electromagnetic flowmeter verification procedures)? Metering performance requirements 1. Accuracy:? Flowmeter within the specified flow range level of accuracy, the maximum permissible error shall be in accordance with Table 1. Flowmeter error that the use of the relative error of indication. ? Accuracy class and the maximum permissible error ?? 2, the reference error:? For instantaneous flow meter is used to indicate the error can be expressed using a reference error, it shall comply with the maximum permissible error range specified in Table 1, the test results of the tender no longer give an accurate rating, while using the maximum permissible error that the maximum permissible error, and also in the post-marked FS, such as ± 0.5% FS. ? 3, error representation and selection principle: In a first test meter, it should be in accordance with the level of accuracy, and references are given an error among the flowmeter error representation; for use relative indication error and error cited combined representation meter error, a test should also be a way to express their consistent use errors. ? 4, Repeatability: 迪川 instrument repeatability meter shall not exceed the maximum permissible error corresponding to the absolute value of 1/3 of the level of accuracy requirements. ?? Cited Features: measurement accuracy from the fluid density, viscosity, temperature, pressure and electrical conductivity changes, the sensor sensing the voltage signal and a linear relationship between the average velocity, and therefore high accuracy. Unimpeded flow measurement tube parts, so there is no additional pressure loss; measurement tube no moving parts, so very long sensor life. ? Since the induced voltage signal is filled in the whole space formed in the magnetic field, is the average of the surface pipe set, so the sensor straight pipe for a shorter length of 5 times the pipe diameter. ? Only the sensor part and the measured liquid liner and electrode contact, as long as a reasonable choice of electrode and lining material can be resistant to corrosion and abrasion. ? Converter uses the latest most advanced microcontroller (MCU) and surface mount technology (SMT), reliable performance, high accuracy, low power consumption, zero stability, convenient parameter setting. Click the Chinese display LCD, display the cumulative flow, instantaneous flow velocity, flow percentage and so on. ? Bi-directional measurement system can measure forward flow, reverse flow. Using a special production process and quality materials to ensure product performance remains stable over a long time. ?? Technical parameters Meter Accuracy: Pipeline 0.3, 0.5, 1.0; Plug-in 1.5 Measuring media: conductivity is greater than 5μS / variety of liquid and liquid-solid two-phase flow in cm. Flow rate range: 0.01 ~ 15m / s Working pressure: 1.6MPa Ambient temperature: -40 ℃ ~ + 50 ℃ Medium temperature: ≤180 ℃ Teflon-lined rubber material lining: ≤80 ℃ proof mark: ExmibdⅡBT4 proof certificate number: GYB01349 external magnetic interference: ≤400A / m Housing protection: Integrated type:?? IP65, IP68; separation type: Sensor IP68 (5 meters underwater, is limited to the rubber lining) converter IP65 Output signal: 4 ~ 20mA.DC? , 0 ~ 750Ω load resistance communication output: RS485 or CAN bus electrical connection: M20 × 1.5 thread, φ10 cable hole Supply voltage: 90 ~ 220VAC, 24 ± 10% V.DC Maximum power consumption: ≤10VA ≤10VA EMFM coding table EMFM-HDF3000 A nominal diameter mm coding path coding path coding Path 10010125125701 70015015150150 80180020020201 20090190025025 2,512,501,021,000,300 323,013,001,221,200 40040 351 350 132,130,050,050,401 400 142 1400 65065 451 450 152 1500 80080 501 500 162 1600 100 100 601 600 E with flanged pipe connections 1. Insert the type 3. Sanitary clamp type F Protection class 1. IP65 2. IP68 G Select pieces (DN10-DN300) 1. 2. not near ground loop fasteners 3. I supply voltage (DN500 below) 1.220VAC 2.24VDC 3.3.6V lithium batteries O output signal 0. No output 1.4-20MA 2. RS232 3. RS485 4. Modbus 5.HART Y meter structure in the form of a body 1. EH 2. Separate ER 3. Separation immersion type EL N signal line length (for split only) 1. Standard: 10 m 2. Long: 15 m 3. Other B Nominal 1.4.0 MPa (DN10-DN150) 2.1.6 MPa (DN200-DN600) 3.1.0 MPa (DN700-DN1600) 4. C requires a special lining material. Polytetrafluoroethylene (DN10-DN800) 2. Neoprene (DN10-DN1600) 3. Polyurethane (DN15-DN600) 4. 1. Special D electrode material stainless steel 316L 2. B 3. Hastelloy Hastelloy C 3. Titanium Ti 4. Ta Ta 5. Pt / Pt 6. nickel alloy according to stainless steel coated with tungsten carbide Ni 7. TUC EMFM-HFD3000 -A / B / C / D / E / F