TY-30GD pipeline electromagnetic flowmeter Introduction: Electromagnetic flowmeter (Eletromagnetic Flowmeters, referred to as EMF) is an inductive instrument manufactured according to Faraday's law of electromagnetic induction to measure the volume flow of conductive medium in a pipe. Electromagnetic flowmeter is a new type of flow measuring instrument developed rapidly with the development of electronic technology in the 1950s and 1960s. That is, when the conductor cuts the magnetic field lines in the magnetic field, induced electromotive force is generated at both ends. It consists of two parts: flow sensor and converter. There are excitation coils on the top and bottom of the measuring tube. After the excitation current is passed, a magnetic field is generated to pass through the measuring tube, and a pair of electrodes are installed on the inner wall of the measuring tube to contact with the liquid, and the induced potential is drawn out and sent to the converter. Diameter electromagnetic flowmeters are mostly used in water supply and drainage projects, and small and medium calibers are often used in solid-liquid double-phase unmeasured fluids or high-demand places. Such as pulp and black liquor in the paper industry, ore pulp in the non-ferrous metallurgy industry, coal slurry in the coal preparation plant, strong erosive liquid in the chemical industry, and blast furnace tuyere cooling water control and leakage monitoring in the iron and steel industry, flow measurement of long-distance pipeline coal hydraulic transportation and control. Small-diameter and micro-diameter electromagnetic flowmeters are often used in places with hygiene requirements such as the pharmaceutical industry, food industry, and biological engineering. Features: 1. The measuring channel of the electromagnetic flowmeter is a smooth straight tube with no obstruction flow detection piece. Because it is not easy to be blocked, it is suitable for measuring the liquid-solid two-phase flow containing solid particles or fibers. body, such as pulp, coal-water slurry, ore pulp, mud and sewage. 2. The electromagnetic flowmeter does not produce pressure loss caused by the detection flow, and the resistance of the meter is only the resistance along the pipeline of a uniform length, and the energy saving effect is obvious. It is most suitable for large-diameter water supply pipes with low resistance loss. 3. The volume flow measured by the electromagnetic flowmeter is actually not significantly affected by changes in fluid density, viscosity, temperature, pressure and conductivity. 4. Compared with most other flow meters, the requirement for the straight pipe section in front is lower. 5. The measurement range is large, and the optional flow range is wide. 6. The caliber range of the electromagnetic flowmeter is wider than other varieties of flowmeters, from a few millimeters to 3m. It can measure forward and reverse bidirectional flow, and also measure pulsating flow, as long as the pulsating frequency The rate is much lower than the excitation frequency. The meter output is linear in nature. 7. It is easy to select the material variety of the parts in contact with the fluid, and can be applied to corrosive fluids. Technical parameter: Executive standard: electromagnetic flowmeter (JB/T 9248-2015) Nominal diameter (mm): Pipe type rubber lining: DN65-DN2000 Pipeline rubber village: DN65-DN2000 Tube type F46 lining: DN10-DN600 Flow direction: forward, reverse, net flow Turndown ratio: 1:20 (custom 1:30) Repeatability error: ±0.1% of measured value Accuracy class: 0.5 class, 1.0 class Measured medium temperature: Conventional rubber lining: -20~+60℃ High temperature rubber lining: -20~+90℃ PTFE village: -30~+120℃ High temperature PTFE village: -20~+160℃ Rated working pressure (high pressure can be customized): DN15~DN25≤4.0MPa DN32~DN300≤1.6MPa DN350~DN800≤1.0MPa DN800~DN2000≤0.6MPa Velocity range: 0.5-10m/s (custom 0.3-10m/s) Conductivity range: The conductivity of the tested fluid is 220us/cm Signal output: 4~20mA (load power 0~7500), pulse frequency Communication output: RS485, HART protocol, MODBUS protocol Power supply: 220VAC, tolerance 15% or 24VDC, ripple≤55% Required straight pipe length: upstream ≥ 5DN, downstream ≥ 3DN Connection method: Flange connection is adopted between flowmeter and piping, and the flange conforms to international: GB/T919-2000 Protection class: IP67, special order up to IP68 Ambient temperature: -25~+60℃ Relative humidity: 5%~95% Total power consumption: less than 5W
Introduction: Electromagnetic flowmeter (Eletromagnetic Flowmeters, referred to as EMF) is an inductive instrument manufactured according to Faraday's law of electromagnetic induction to measure the volume flow of conductive medium in a pipe. Electromagnetic flowmeter is a new type of flow measuring instrument developed rapidly with the development of electronic technology in the 1950s and 1960s. That is, when the conductor cuts the magnetic field lines in the magnetic field, induced electromotive force is generated at both ends. It consists of two parts: flow sensor and converter. There are excitation coils on the top and bottom of the measuring tube. After the excitation current is passed, a magnetic field is generated to pass through the measuring tube, and a pair of electrodes are installed on the inner wall of the measuring tube to contact with the liquid, and the induced potential is drawn out and sent to the converter. Diameter electromagnetic flowmeters are mostly used in water supply and drainage projects, and small and medium calibers are often used in solid-liquid double-phase unmeasured fluids or high-demand places. Such as pulp and black liquor in the paper industry, ore pulp in the non-ferrous metallurgy industry, coal slurry in the coal preparation plant, strong erosive liquid in the chemical industry, and blast furnace tuyere cooling water control and leakage monitoring in the iron and steel industry, flow measurement of long-distance pipeline coal hydraulic transportation and control. Small-diameter and micro-diameter electromagnetic flowmeters are often used in places with hygiene requirements such as the pharmaceutical industry, food industry, and biological engineering.
